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A review on adsorption of organic pollutants on clay surface

Review Paper | March 1, 2019

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Aniqa Jadoon, Muhammad Arif, Komal Khan, Shakeel Zeb, Zarshad Ali, Farman Ali, Sobia Afzal, Muhammad Usman Khan, Muhammad Ikramullah, Sayed Maeen Badshah, Fazle Akbar, Noor Ahmed Bangulzai, Abdul Ghaffar, Muhammad Luqman Khan Bazai, Ghulam Rasul, Hameed Ur Rehman

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Int. J. Biosci.14( 3), 147-183, March 2019

DOI: http://dx.doi.org/10.12692/ijb/14.3.147-183


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Adsorption method is commonly used to eliminate different pollutants, especially organic pollutants from water on adsorbents. Different types of adsorbents are used to adsorbed organic pollutants like zeolite, siliceous materials, chitosan, and activated carbon, but to limit the scope, our review focuses only on different types of clay adsorbents for the removal of organic pollutants. The clay is an efficient and low cost adsorbent that attracted the attentions of the researchers. On the other hand, organic pollutants are often detected in industrial wastewaters and mostly these are known to be highly toxic and carcinogenic in nature. This review, compiled different types of clay adsorbents and organic pollutants (dyes, pharmaceutical products, herbicides, fungicides, pesticides, oil spills, and other phenolic organic compounds). The review describes different clay adsorbents, their molecular structure and their characteristics as well as discusses the mechanisms that how organic pollutants adsorbed on the clay surface.


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A review on adsorption of organic pollutants on clay surface

Acisli O. 2016. Modification of nanosized natural montmorillonite for ultrasound-enhanced adsorption of Acid Red 17. Ultrasonics sonochemistry 31, 116-121.

Adeyemo AA. 2017. Adsorption of dyes using different types of clay: a review. Applied Water Science 7(2), 543-568.

Aguiar J. 2017. Adsorption study of reactive dyes onto porous clay heterostructures. Applied Clay Science 135, 35-44.

Ahmed M, Ram R. 1992. Removal of basic dye from waste-water using silica as adsorbent. Environmental pollution 77(1), 79-86.

Al-Degs Y. 2000. Effect of carbon surface chemistry on the removal of reactive dyes from textile effluent.”Water Research 34(3), 927-935.

Ali I. 2012. Low cost adsorbents for the removal of organic pollutants from wastewater. Journal of environmental management 113, 170-183.

Almeida C. 2009. Removal of methylene blue from colored effluents by adsorption on montmorillonite clay. Journal of colloid and interface science 332(1),  46-53.

Amin NK. 2008. Removal of reactive dye from aqueous solutions by adsorption onto activated carbons prepared from sugarcane bagasse pith. Desalination 223(1-3), 152-161.

An JH, Dultz S. 2007. Adsorption of tannic acid on chitosan-montmorillonite as a function of pH and surface charge properties. Applied Clay Science 36(4),256-264.

Anirudhan T, Ramachandran M. 2015. Adsorptive removal of basic dyes from aqueous solutions by surfactant modified bentonite clay (organoclay): kinetic and competitive adsorption isotherm. Process Safety and Environmental Protection 95, 215-225.

Arellano-Cárdenas S. 2005. Adsorption of phenol and dichlorophenols from aqueous solutions by porous clay heterostructure (PCH). Journal of the Mexican Chemical Society 49(3), 287-291.

Arya V, Philip L 2016. Adsorption of pharmaceuticals in water using Fe3O4 coated polymer clay composite. Microporous and Mesoporous Materials 232, 273-280.

Atia AA. 2003. Studies on uptake behaviour of copper (II) and lead (II) by amine chelating resins with different textural properties. Separation and Purification Technology 33(3), 295-301.

Avisar D. 2010. Sorption of sulfonamides and tetracyclines to montmorillonite clay. Water, Air, & Soil Pollution 209(1-4), 439-450.

Azarkan S. 2016. Adsorption of two fungicides on natural clays of Morocco. Applied Clay Science 123, 37-46.

Azejjel H. 2010. Effect of cosolvents on the adsorption of ethofumesate by modified Moroccan bentonite and common clay. Applied Clay Science 49(3), 120-126.

Ba K. 2014. Use of Chitosan-modified Bentonite for Removal of Cu 2+, Cl− and 2, 4-Dichlorophenoxyacetic Acid (2, 4-D) from Aqueous Solution. Kemija u industriji: Časopis kemičara i kemijskih inženjera Hrvatske 63(7-8), 253-258.

Babel S, Kurniawan TA. 2003. Low-cost adsorbents for heavy metals uptake from contaminated water: a review. Journal of hazardous materials 97(1-3), 219-243.

Banat IM. 1997. Microbial decolorization of textile-dye-containing effluents: A review (58, pg 217, 1996). Bioresource technology 61(1), 103-103.

Barceló D. 2005. Emerging organic pollutants in waste waters and sludge, Springer Science & Business Media.

Barreca S. 2014. The effect of montmorillonite clay in alginate gel beads for polychlorinated biphenyl adsorption: Isothermal and kinetic studies. Applied Clay Science 99, 220-228.

Barrer R. 1989. Shape-selective sorbents based on clay minerals: a review. Clays and Clay Minerals 37(5), 385-395.

Baskaralingam P. 2006. Equilibrium studies for the adsorption of acid dye onto modified hectorite. Journal of hazardous materials 136(3), 989-992.

Bée A. 2017. Magnetic chitosan/clay beads: A magsorbent for the removal of cationic dye from water.Journal of Magnetism and Magnetic Materials 421, 59-64.

Bergaoui L. 1999. A comparative study of the acidity toward the aqueous phase and adsorptive properties of Al13-pillared montmorillonite and Al13-pillared saponite. The Journal of Physical Chemistry B 103(15), 2897-2902.

Berhane TM. 2016. Adsorption of bisphenol A and ciprofloxacin by palygorskite-montmorillonite: effect of granule size, solution chemistry and temperature. Applied Clay Science 132, 518-527.

Bhattacharyya R, Ray SK. 2015. Removal of congo red and methyl violet from water using nano clay filled composite hydrogels of poly acrylic acid and polyethylene glycol. Chemical Engineering Journal 260, 269-283.

Bingol D. 2010. Brilliant Yellow dye adsorption onto sepiolite using a full factorial design. Applied Clay Science 50(3), 315-321.

Bouras O. 2010. Effect of humic acids on pentachlorophenol sorption to cetyltrimethylammonium-modified, Fe-and Al-pillared montmorillonites. Applied Clay Science 50(1), 58-63.

Bouras O. 2007. Adsorption of diuron and its degradation products from aqueous solution by surfactant-modified pillared clays. Applied Clay Science 37(3-4), 240-250.

Boyd SA. 1993. Method of removing hydrocarbon contaminants from air and water with organophilic, quaternary ammonium ion-exchanged smectite clay, Google Patents.

Brandão PC. 2010. Removal of petroleum hydrocarbons from aqueous solution using sugarcane bagasse as adsorbent. Journal of hazardous materials 175(1-3), 1106-1112.

Brandt KB, Kydd RA. 1997. The effect of framework substitution and pillar composition on the cracking activities of montmorillonite and beidellite. Applied Catalysis A: General 165(1-2), 327-333.

Breen C. 1991. Thermogravimetric study of the desorption of cyclohexylamine and pyridine from an acid-treated Wyoming bentonite. Clay Minerals 26(4), 473-486.

Brown G. 1972. The X-ray identification and crystal structures of clay minerals, Mineralogical Society.

Carmody O. 2007. Adsorption of hydrocarbons on organo-clays—implications for oil spill remediation. Journal of colloid and interface science 305(1), 17-24.

Catrinescu C. 2003. Catalytic wet peroxide oxidation of phenol over Fe-exchanged pillared beidellite. Water Research 37(5), 1154-1160.

Celis R. 2000. Heavy metal adsorption by functionalized clays. Environmental science & technology 34(21), 4593-4599.

Celis R. 2007. Selective modification of clay minerals for the adsorption of herbicides widely used in olive groves. Journal of agricultural and food chemistry 55(16), 6650-6658.

Chang PH. 2016. Interaction of ciprofloxacin and probe compounds with palygorskite PFl-1. Journal of hazardous materials 303, 55-63.

Chen CC, Hayes KF. 1999. X-ray absorption spectroscopy investigation of aqueous Co (II) and Sr (II) sorption at clay–water interfaces. Geochimica et Cosmochimica Acta 63(19-20), 3205-3215.

Chen C. 2014. Sorption characteristics of nitrosodiphenylamine (NDPhA) and diphenylamine (DPhA) onto organo-bentonite from aqueous solution. Chemical Engineering Journal 240, 487-493.

Chinoune K. 2016. Adsorption of reactive dyes from aqueous solution by dirty bentonite. Applied Clay Science 123, 64-75.

Cooney DO. 1998. Adsorption design for wastewater treatment, CRC press.

Cooper C, Burch R. 1999. Mesoporous materials for water treatment processes. Water Research 33(18), 3689-3694.

Corsini E. 2008. Effects of pesticide exposure on the human immune system. Human & experimental toxicology 27(9), 671-680.

Crini G. 2006. Non-conventional low-cost adsorbents for dye removal: a review. Bioresource technology 97(9), 1061-1085.

Crini G, Morcellet M. 2002. Synthesis and applications of adsorbents containing cyclodextrins. Journal of Separation Science 25(13), 789-813.

Cruz-Guzmán M. 200. Adsorption of the herbicide simazine by montmorillonite modified with natural organic cations. Environmental science & technology 38(1), 180-186.

Cruz-Guzmán M. 2005. Adsorption of pesticides from water by functionalized organobentonites. Journal of agricultural and food chemistry 53(19), 7502-7511.

Daughton CG, Ternes TA. 1999. Pharmaceuticals and personal care products in the environment: agents of subtle change? Environmental health perspectives 107(6), 907-938.

De Oliveira T. 2017. Adsorption of diclofenac onto organoclays: Effects of surfactant and environmental (pH and temperature) conditions. Journal of hazardous materials 323, 558-566.

De Paiva LB. 2008. Organoclays: properties, preparation and applications. Applied Clay Science 42(1-2), 8-24.

Derbyshire F. 2001. Carbon materials in environmental applications. Chemistry and physics of carbon: 1-66.

Dich J. 1997. Pesticides and cancer. Cancer Causes & Control 8(3), 420-443.

Ding C. 2016. Removal of quinclorac herbicide from aqueous solution by chitosan/montmorillonite bionanocomposite. Desalination and Water Treatment 57(52), 24970-24981.

El AA, Al-Hazmi GA. 2015. Organically Modified Clay for Adsorption of Petroleum Hydrocarbon. European Chemical Bulletin 4(1-3), 87-91.

Espantaleon A. 2003. Use of activated clays in the removal of dyes and surfactants from tannery waste waters. Applied Clay Science 24(1-2), 105-110.

Estévez MT. 1995. Characterization of rhodamine 6G adsorbed onto hectorite by electronic spectroscopy. Journal of colloid and interface science 171(2), 439-445.

Fatimah I, Huda T. 2013. Preparation of cetyltrimethylammonium intercalated Indonesian montmorillonite for adsorption of toluene. Applied Clay Science 74, 115-120.

Ferreira P. 2006. Hydrophobic porous benzene-silica hybrid clay heterostructure and its application in the adsorption of volatile organic compounds. Materials science forum, Trans Tech Publ.

Fogler HS, Srinivasan KR. 1988. Modified clay sorbents, Google Patents.

Frini N. 1997. Preliminary results on the properties of pillared clays by mixed Al Cu solutions. Applied Clay Science 12(3), 281-292.

Gamba M. 2015. Comparison of imazalil removal onto montmorillonite and nanomontmorillonite and adsorption surface sites involved: an approach for agricultural wastewater treatment. Industrial & engineering chemistry research 54(5), 1529-1538.

Gao Y. 2016. Iron modified bentonite: Enhanced adsorption performance for organic pollutant and its regeneration by heterogeneous visible light photo-Fenton process at circumneutral pH. Journal of hazardous materials 302, 105-113.

Giger W. 2003. Occurrence and fate of antibiotics as trace contaminants in wastewaters, sewage sludges, and surface waters. CHIMIA International Journal for Chemistry 57(9), 485-491.

Gil A. 2011. Removal of dyes from wastewaters by adsorption on pillared clays. Chemical Engineering Journal 168(3), 1032-1040.

Gonzalez-Pradas E. 1991. Adsorption of β-Carotene from acetone solution on natural and chemically modified bentonite. Materials Chemistry and Physics 27(3), 307-319.

Grim RE. 1962. Applied Clay Mineralogy, McGraw Haill Book Company. New York, USA.

Guibal E. 2004. Interactions of metal ions with chitosan-based sorbents: a review. Separation and Purification Technology 38(1), 43-74.

Gupta VK. 2006. Studies on the interaction of some azo dyes (naphthol red-J and direct orange) with nontronite mineral. Journal of colloid and interface science 298(1), 79-86.

Gurgel LVA. 2008. Adsorption of Cu (II), Cd (II), and Pb (II) from aqueous single metal solutions by cellulose and mercerized cellulose chemically modified with succinic anhydride. Bioresource technology 99(8), 3077-3083.

Hallenbeck WH, Cunningham-Burns KM. 2012. Pesticides and human health, Springer Science & Business Media.

Halling-Sørensen B. 1998. Occurrence, fate and effects of pharmaceutical substances in the environment-A review. Chemosphere 36(2), 357-393.

Harris RG. 2001. Selective adsorption of dyes and other organic molecules to kaolinite and oxide surfaces. Colloids and Surfaces A: Physicochemical and Engineering Aspects 180(1-2), 131-140.

Hassani A. 2015. Adsorption of two cationic textile dyes from water with modified nanoclay: a comparative study by using central composite design. Journal of Environmental Chemical Engineering 3(4), 2738-2749.

Hassani A. 2015. Preparation of montmorillonite–alginate nanobiocomposite for adsorption of a textile dye in aqueous phase: isotherm, kinetic and experimental design approaches. Journal of Industrial and Engineering Chemistry 21, 1197-1207.

He H. 2006. Changes in the morphology of organoclays with HDTMA+ surfactant loading.” Applied Clay Science 31(3-4), 262-271.

He H. 2010. Organoclays prepared from montmorillonites with different cation exchange capacity and surfactant configuration. Applied Clay Science 48(1-2), 67-72.

Hermosin M, Cornejo J. 1992. Removing 2, 4-D from water by organo-clays. Chemosphere 24(10),  1493-1503.

Jaafar SNS. 2006. Adsorption study-dye removal using clay, KUKTEM.

Jalil MER. 2014. Effect of the Al/clay ratio on the thiabendazol removal by aluminum pillared clays. Applied Clay Science 87, 245-253.

Jiang JQ, Zeng Z. 2003. Comparison of modified montmorillonite adsorbents: Part II: The effects of the type of raw clays and modification conditions on the adsorption performance. Chemosphere 53(1), 53-62.

Jović-Jovičić N. 2010. Organo-inorganic bentonite for simultaneous adsorption of Acid Orange 10 and lead ions. Applied Clay Science 47(3-4), 452-456.

Kamble SP. 2009. Defluoridation of drinking water using chemically modified bentonite clay. Desalination 249(2), 687-693.

Khattri S, Singh M. 1999. Colour removal from dye wastewater using sugar cane dust as an adsorbent. Adsorption science & technology 17(4), 269-282.

Khenifi A. 2007. Adsorption study of an industrial dye by an organic clay. Adsorption 13(2), 149-158.

Kooli F. 2013. Effect of C16TMA contents on the thermal stability of organo-bentonites: In situ X-ray diffraction analysis. Thermochimica acta 551, 7-13.

Krysztafkiewicz A. 2002. Adsorption of dyes on a silica surface. Applied surface science 199(1-4), 31-39.

Kumar MNR. 2000. A review of chitin and chitosan applications. Reactive and functional polymers 46(1), 1-27.

Lee Jif. 1990. Adsorption of benzene, toluene and xylene by two tetramethylammonium-smectites having different charge densities. Clays Clay Miner.

Levy SB. 1998. The challenge of antibiotic resistance. Scientific American 278(3), 46-53.

Lezehari M. 2010. Alginate encapsulated pillared clays: removal of a neutral/anionic biocide (pentachlorophenol) and a cationic dye (safranine) from aqueous solutions. Colloids and Surfaces A: Physicochemical and Engineering Aspects 366(1-3), 88-94.

Li J. 2009. Adsorption of herbicides 2, 4-D and acetochlor on inorganic–organic bentonites. Applied Clay Science 46(3), 314-318.

Lian L. 2009. Use of CaCl2 modified bentonite for removal of Congo red dye from aqueous solutions. Desalination 249(2), 797-801.

Lillo-Ródenas M. 2007. Activated carbons prepared by pyrolysis of mixtures of carbon precursor/alkaline hydroxide. Journal of Analytical and Applied Pyrolysis 80(1), 166-174.

Liu B. 2014. Microwave-assisted modification on montmorillonite with ester-containing Gemini surfactant and its adsorption behavior for triclosan. Journal of colloid and interface science 418, 311-316.

Liu B. 2011. Rapid modification of montmorillonite with novel cationic Gemini surfactants and its adsorption for methyl orange. Materials Chemistry and Physics 130(3), 1220-1226.

Liu P. 2007. Polymer modified clay minerals: A review. Applied Clay Science 38(1-2), 64-76.

Liu P, Zhang L. 2007. Adsorption of dyes from aqueous solutions or suspensions with clay nano-adsorbents. Separation and Purification Technology 58(1), 32-39.

Loukidou MX. 2003. Removal of As (V) from wastewaters by chemically modified fungal biomass.” Water Research 37(18), 4544-4552.

Luckham PF, Rossi S. 1999. The colloidal and rheological properties of bentonite suspensions. Advances in colloid and interface science 82(1-3),  43-92.

Ma A. 2008. Removal of nickel from effluents by chelating ion exchange. Journal of Chemical Technology & Biotechnology: International Research in Process, Environmental & Clean Technology 83(12), 1623-1632.

Makhoukhi B. 2015. Adsorption of Telon dyes onto bis-imidazolium modified bentonite in aqueous solutions. Journal of Environmental Chemical Engineering 3(2), 1384-1392.

Mangrulkar PA. 2008. Adsorption of phenol and o-chlorophenol by mesoporous MCM-41. Journal of Hazardous Materials 160(2-3), 414-421.

Marco-Brown JL. 2014. Adsorption of picloram herbicide on montmorillonite: kinetic and equilibrium studies. Colloids and Surfaces A: Physicochemical and Engineering Aspects 449, 121-128.

Marsal A. 2009. Adsorption of polyphenols in wastewater by organo-bentonites. Applied Clay Science 44(1-2), 151-155.

Matthes W, Kahr G. 2000. Sorption of organic compounds by Al and Zr-hydroxy-intercalated and pillared bentonite. Clays and clay minerals 48(6), 593-602.

Mekhloufi M. 2013. Removal of 8-quinolinecarboxylic acid pesticide from aqueous solution by adsorption on activated montmorillonites. Environmental monitoring and assessment 185(12), 10365-10375.

Montarges E. 1995. Intercalation of A113-polyethyleneoxide complexes into montmorillonite clay.

Moore DM, Reynolds RC. 1989. X-ray Diffraction and the Identification and Analysis of Clay Minerals, Oxford university press Oxford.

Moreira MA. 2017. Effect of chemical modification of palygorskite and sepiolite by 3-aminopropyltriethoxisilane on adsorption of cationic and anionic dyes. Applied Clay Science 135, 394-404.

Murray H. 2002. Industrial clays case study. Mining, Minerals and Sustainable Development 64, 1-9.

Murray HH. 1991. Overview—clay mineral applications. Applied Clay Science 5(5-6), 379-395.

Namasivayam C. 2001. Waste’coir pith—a potential biomass for the treatment of dyeing wastewaters.” Biomass and Bioenergy 21(6), 477-483.]

Nguyen VN. 2013. Synthesis of organoclays and their application for the adsorption of phenolic compounds from aqueous solution. Journal of Industrial and Engineering Chemistry 19(2), 640-644.

Nkansah MA. 2012. The use of lightweight expanded clay aggregate (LECA) as sorbent for PAHs removal from water. Journal of hazardous materials 217, 360-365.

Nouri S. 2002. Comparison of adsorption capacity of p-cresol & p-nitrophenol by activated carbon in single and double solute. Adsorption 8(3), 215-223.

Nourmoradi H. 2016. Surfactant modified montmorillonite as a low cost adsorbent for 4-chlorophenol: Equilibrium, kinetic and thermodynamic study. Journal of the Taiwan Institute of chemical engineers 59, 244-251.

Odom I. 1984. Smectite clay minerals: properties and uses. Phil. Trans. R. Soc. Lond. A 311(1517), 391-409.

Okada T. 2005. Tris (2, 2′-bipyridine) ruthenium (II)-clays as adsorbents for phenol and chlorinated phenols from aqueous solution. Applied Clay Science 29(1), 45-53.

Oliveira LC. 2004. Magnetic zeolites: a new adsorbent for removal of metallic contaminants from water.” Water Research 38(17), 3699-3704.

Ortiz-Martínez K. 2016. Single and multi-component adsorptive removal of bisphenol a and 2, 4-dichlorophenol from aqueous solutions with transition metal modified inorganic–organic pillared clay composites: effect of pH and presence of humic acid. Journal of hazardous materials 312, 262-271.

Özbelge TA. 2002. Removal of phenolic compounds from rubber–textile wastewaters by physico-chemical methods. Chemical Engineering and Processing: Process Intensification 41(8), 719-730.

Özcan AS. 2004. Adsorption of Acid Blue 193 from aqueous solutions onto Na–bentonite and DTMA–bentonite. Journal of colloid and interface science 280(1), 44-54.

Öztekin N. 2002. Adsorption of polyethyleneimine from aqueous solutions on bentonite clays. Materials Letters 55(1-2), 73-76.

Pal O, Vanjara A. 2001. Removal of malathion and butachlor from aqueous solution by clays and organoclays. Separation and Purification Technology 24(1-2), 167-172.

Parida SK. 2006. Adsorption of organic molecules on silica surface. Advances in colloid and interface science 121(1-3), 77-110.

Park Y. 2011. Characterisation of organoclays and adsorption of p-nitrophenol: environmental application. Journal of colloid and interface science 360(2), 440-456.

Park Y. 2014. Removal of herbicides from aqueous solutions by modified forms of montmorillonite. Journal of colloid and interface science 415, 127-132.

Paul B. 2011. Organosilane grafted acid-activated beidellite clay for the removal of non-ionic alachlor and anionic imazaquin. Applied Surface Science 257(13), 5552-5558.

Pereira MFR. 2003. Adsorption of dyes on activated carbons: influence of surface chemical groups. Carbon 41(4), 811-821.

Phan T. 2000. Synthesis and characterization of silica gels functionalized with monochlorotriazinyl β-cyclodextrin and their sorption capacities towards organic compounds. Journal of inclusion phenomena and macrocyclic chemistry 38(1-4), 345-359.

Pinnavaia TJ. 1984. On the pillaring and delamination of smectite clay catalysts by polyoxo cations of aluminum. Journal of molecular Catalysis 27(1-2), 195-212.

Polubesova T. 2005. Water purification from organic pollutants by optimized micelle− clay systems. Environmental science & technology 39(7), 2343-2348.

Pouya ES. 2016. Effect of dispersed hydrophilic silicon dioxide nanoparticles on batch adsorption of benzoic acid from aqueous solution using modified natural vermiculite: An equilibrium study. Journal of applied research and technology 14(5), 325-337.

Puri B. 1965. Acidoid behavior of charcoal as a function of its oxygen complexes. J. Indian Chemistry Sociology 42, 427-434.

Qu F. 2009. Adsorption behaviors of volatile organic compounds (VOCs) on porous clay heterostructures (PCH). Journal of hazardous materials 170(1), 7-12.

Rawat J. 2012. Selective Removal of Some Polyhydric Phenols from Aqueous Solution by Ferric Antimonate. Water Environment Research 84(5), 417-423.

Richards S, Bouazza A. 2007. Phenol adsorption in organo-modified basaltic clay and bentonite. Applied Clay Science 37(1-2), 133-142.

Robinson T. 2002. Removal of dyes from a synthetic textile dye effluent by biosorption on apple pomace and wheat straw. Water Research 36(11), 2824-2830.

Robinson T. 2001. Remediation of dyes in textile effluent: a critical review on current treatment technologies with a proposed alternative. Bioresource technology 77(3), 247-255.

Rodríguez-Cruz MS. 2008. Significance of the long-chain organic cation structure in the sorption of the penconazole and metalaxyl fungicides by organo clays. Journal of hazardous materials 160(1), 200-207.

Rodríguez-Liébana JA. 2016. Adsorption/desorption of fungicides in natural clays from Southeastern Spain. Applied Clay Science 132, 402-411.

Rodríguez A. 2010. Removal of dyes from wastewaters by adsorption on sepiolite and pansil. Industrial & engineering chemistry research 49(7),  3207-3216.

Rouquerol J. 2013. Adsorption by powders and porous solids: principles, methodology and applications, Academic press.

Rubio J, Kitchener J. 1976. The mechanism of adsorption of poly (ethylene oxide) flocculant on silica. Journal of colloid and interface science 57(1),  132-142.

Rytwo G. 2007. Use of CV-and TPP-montmorillonite for the removal of priority pollutants from water. Applied Clay Science 36(1-3),  182-190.

Saitoh T, Shibayama T. 2016. Removal and degradation of β-lactam antibiotics in water using didodecyldimethylammonium bromide-modified montmorillonite organoclay. Journal of hazardous materials 317, 677-685.

Sanchez-Martin M. 2006. Efficiency of different clay minerals modified with a cationic surfactant in the adsorption of pesticides: influence of clay type and pesticide hydrophobicity.” Applied Clay Science 31(3-4), 216-228.

Sánchez RMT. 2011. Benzimidazole adsorption on the external and interlayer surfaces of raw and treated montmorillonite. Applied Clay Science 53(3), 366-373.

Santiago CC. 2016. Adsorption and characterization of MCPA on DDTMA-and raw-montmorillonite: Surface sites involved. Journal of Environmental Science and Health, Part B 51(4), 245-253.

Shakir K. 2008. Removal of catechol from aqueous solutions by adsorption onto organophilic-bentonite. Journal of hazardous materials 150(3), 765-773.

Shen YH. 2002. Removal of phenol from water by adsorption–flocculation using organobentonite. Water Research 36(5), 1107-1114.

Sheng G. 2002. Adsorption of dinitrophenol herbfrom water by montmorillonites. Clays and clay minerals 50(1), 25-34.

Shichi T, Takagi K. 2000. Clay minerals as photochemical reaction fields. Journal of Photochemistry and Photobiology C: Photochemistry Reviews 1(2), 113-130.

Shirzad-Siboni M. 2015. Preparation, characterization and application of a CTAB-modified nanoclay for the adsorption of an herbicide from aqueous solutions: Kinetic and equilibrium studies. Comptes Rendus Chimie 18(2), 204-214.

Silva AL. 2012. Preparation of Organovermiculite for Adsorption of Organic Compounds. Materials Science Forum, Trans Tech Publ.

Smith JA, Jaffé PR. 1994. Adsorptive selectivity of organic-cation-modified bentonite for nonionic organic contaminants.” Water, Air, and Soil Pollution 72(1-4), 205-211.

Stawiński W. 2017. Simultaneous removal of dyes and metal cations using an acid, acid-base and base modified vermiculite as a sustainable and recyclable adsorbent. Science of the Total Environment 576,  398-408.

Steudel A. 2009. Alteration of swelling clay minerals by acid activation. Applied Clay Science 44(1-2), 105-115.

Stockmeyer M, Kruse K. 1991. Adsorption of Zn and Ni ions and phenol and diethylketones by bentonites of different organophilicities. Clay Minerals 26(3), 431-434.

Stumm W. 1981. Aquatic Chemistry: an Introduction Emphasizing Chemical Equilibria in. Natural Waters 780.

Sturini M. 2016. Removal of fluoroquinolone contaminants from environmental waters on sepiolite and its photo-induced regeneration. Chemosphere 150, 686-693.

Suraj G. 1998. Adsorption of cadmium and copper by modified kaolinites. Applied Clay Science 13(4), 293-306.

Tapia Estévez M. 1993. Absorption and fluorescence properties of rhodamine 6G adsorbed on aqueous suspensions of Wyoming montmorillonite. Langmuir 9(12), 3629-3634.

Theng BKG. 1974. The chemistry of clay-organic reactions. The Chemistry of Clay-Organic Reactions.

Tian G. 2016. Ammonium sulfide-assisted hydrothermal activation of palygorskite for enhanced adsorption of methyl violet. Journal of Environmental Sciences 41, 33-43.

Tinge J. 1987. The absorption of propane and ethene in slurries of activated carbon in water—I. Chemical engineering science 42(8), 1899-1907.

Toor M, Jin B. 2012. Adsorption characteristics, isotherm, kinetics, and diffusion of modified natural bentonite for removing diazo dye. Chemical Engineering Journal 187, 79-88.

Toor M. 2015. Activating natural bentonite as a cost-effective adsorbent for removal of Congo-red in wastewater. Journal of Industrial and Engineering Chemistry 21, 653-661.

Troisi G. 2004. A screening method for ranking chemicals by their fate and behaviour in the environment and potential toxic effects in humans following non-occupational exposure.

Tsai YL. 2016. Amitriptyline removal using palygorskite clay. Chemosphere 155, 292-299.

Unuabonah EI. 2008. Equilibrium, kinetic and sorber design studies on the adsorption of Aniline blue dye by sodium tetraborate-modified Kaolinite clay adsorbent. Journal of hazardous materials 157(2-3), 397-409.

Varma A. 2004. Metal complexation by chitosan and its derivatives: a review. Carbohydrate Polymers 55(1), 77-93.

Vijayaraghavan K, Yun YS. 2008. Bacterial biosorbents and biosorption. Biotechnology advances 26(3), 266-291.

Wang Y. 2016. Preparation of surface-functionalized porous clay heterostructures via carbonization of soft-template and their adsorption performance for toluene. Applied Surface Science 363, 113-121.

Wibulswas R. 1999. Adsorption of phenolic compounds from water by surfactant-modified pillared clays. Process safety and environmental protection 77(2), 88-92.

Woolard C. 2002. Evaluation of the use of modified coal ash as a potential sorbent for organic waste streams. Applied Geochemistry 17(8), 1159-1164.

Wu Q. 2013. Adsorption of the quinolone antibiotic  nalidixic acid onto montmorillonite and kaolinite. Applied Clay Science 74, 66-73.

Wu R, Qu J. 2004. Removal of Acid Red B from water by surface modified Fe3O4. Acta Scieniae Circumstantiae 24(3), 435-439.

Wu Z, Zhu L. 2012. Removal of polycyclic aromatic hydrocarbons and phenols from coking wastewater by simultaneously synthesized organobentonite in a one-step process. Journal of Environmental Sciences (China) 24(2), 248-253.

Xu L. 2014. Adsorption–desorption behavior of naphthalene onto CDMBA modified bentonite: Contribution of the π–π interaction. Applied Clay Science 100, 29-34.

Xue G. 2013. The removal of p-nitrophenol from aqueous solutions by adsorption using gemini surfactants modified montmorillonites. Chemical Engineering Journal 218, 223-231.

Yang S. 2015. The characterization of organo-montmorillonite modified with a novel aromatic-containing gemini surfactant and its comparative adsorption for 2-naphthol and phenol. Chemical Engineering Journal 268, 125-134.

Yapar S. 2004. Hydrotalcite as a Potential Sorbent for the Removal of 2, 4-Dichlorophenol. Turkish Journal of Engineering and Environmental Sciences 28(1), 41-48.

Yariv S. 1996. Thermo-IR-spectroscopy analysis of the interactions between organic pollutants and clay minerals. Thermochimica acta 274, 1-35.

Yip ACK. 2005. Chemical-vapor-deposited copper on acid-activated bentonite clay as an applicable heterogeneous catalyst for the photo-Fenton-like oxidation of textile organic pollutants. Industrial & engineering chemistry research 44(21), 7983-7990.

Yu X. 2010. Development of organovermiculite-based adsorbent for removing anionic dye from aqueous solution. Journal of hazardous materials 180(1-3), 499-507.

Yua C, Han X. 2015. Adsorbent Material Used In Water Treatment-A Review. 2nd International Workshop on Materials Engineering and Computer Sciences (IWMECS 2015).

Zampori L. 2009. Adsorption of nitrobenzene and orthochlorophenol on dimethyl ditallowyl montmorillonite: A microstructural and thermodynamic study. Applied Clay Science 42(3-4), 605-610.

Zermane F. 2010. Cooperative coadsorption of 4-nitrophenol and basic yellow 28 dye onto an iron organo–inorgano pillared montmorillonite clay. Journal of colloid and interface science 350(1), 315-319.

Zhao MQ. 2011. Improvement of oil adsorption performance by a sponge-like natural vermiculite-carbon nanotube hybrid. Applied Clay Science 53(1), 1-7.

Zhao X. 2012. Removing organic contaminants with bifunctional iron modified rectorite as efficient adsorbent and visible light photo-Fenton catalyst. Journal of hazardous materials 215, 57-64.

Zhou CH. 2012. like composites of cellulose acetate–organo-montmorillonite for removal of hazardous anionic dye in water. Chemical Engineering Journal 209, 223-234.

Zhou CH. 2011. An overview on strategies towards clay-based designer catalysts for green and sustainable catalysis. Applied Clay Science 53(2),  87-96.

Zhou Q. 2010. Sorption of perfluorooctane sulfonate on organo-montmorillonites. Chemosphere 78(6),  688-694.

Zhu H. 2005. Photocatalysts prepared from layered clays and titanium hydrate for degradation of organic pollutants in water. Applied Clay Science 28(1-4), 79-88.

Zohra B. 2008. Adsorption of Direct Red 2 on bentonite modified by cetyltrimethylammonium bromide. Chemical Engineering Journal 136(2-3), 295-305.

Zussman J. 1992. An introduction to the rock forming minerals. Longman Group Ltd, New York, p 698Defant MJ, Drummond MS (1990) Derivation of some modern arc magmas by melting of young sub ducted lithosphere. Nature 347, 662665 Della.