Modeling hydroxyl radical control process in hydrodynamic cavitation reactors

Paper Details

Research Paper 01/04/2015
Views (195) Download (5)
current_issue_feature_image
publication_file

Modeling hydroxyl radical control process in hydrodynamic cavitation reactors

Zahra Raeyati, Mahmood Torabi Angaji
J. Bio. Env. Sci.6( 4), 474-481, April 2015.
Certificate: JBES 2015 [Generate Certificate]

Abstract

Cavitations phenomenon is resulted from elevated temperature and pressure and production of free radicals. This technology can be employed to disinfect drinking water and waste water. What is important in cavitations reactors is the production of hydroxyl radicals, which plays a significant role in removing coliforms. So, it was attempted to control radical production through controlling the input pressure. It was examined by placing a PID controller. The presented control algorithm is carried out based on trial and error. Flow diagram of hydroxyl radical control model was also designed using pressure. The relationship between design in term of cavitational intensity (according to collapsing pressure and temperature) and cavitational efficiency (according to radical) will be based on operational parameters regarding the hydrodynamic cavitations in order to perceive the design information concerning cavitational intensity and radical efficiency.

VIEWS 6

Anan’in  AV,  Bavina  TV,  Breusov  OM.  1975. DAN SSSR 222, 845–856.

Arrojo S, Benito Y. 2008. A theoretical study of hydrodynamic cavitation, Ultrasonics Sonochemistry 15, 203–211.

Astrom KJ, Hagglund T. 1995. PID Controllers: theory,design, and tuning, 2nd Ed. Instrument Society of America.

Bodurova D, Angelov M. 2004. Intensification the process of water purification by hydrodynamic cavitation, Republic of Macedonia, September 16–17.

Cheng-Ching Yu. 1999. Auto-tuning of PID controllers:relay feedback approach, Springer.

Coripio AB. 1990. Tuning of Industrial Control Systems, Instrument Society of America.

Datta A, Ming-Tzu H, Shankar PB. 2000. Structure and synthesis of PID controllers, Springer.

Joshi JB, Pandit AB. 1993. Hydrolysis of fatty oils: effect of cavitation, Chem. Eng.Sci 48, 3440.

Kevin MP, Nicanor Q. 2002. Proportional-Integral-Derivative Control with Derivative Filtering and Integral Anti-Windup for a DC Servo, Dept. Electrical Engineering, The Ohio State University, March 22.

Mahvi AH. 2009. Application of Ultrasonic Technology for Water and Wastewater Treatment, Iranian J Publ Health 38(2), 1-17.

Marlin TE. 1995. Process control: designing processes and control systems for dynamic performance, McGraw-Hill.

Mc Millan GK. 1983.  Tuning  and  Control  Loop Performance, 2nd Edition, Instrument Society of America.

Netushil. 1978. Theory of Automatic Control, Mir, Moscow.

Parag RG, Aniruddha BP. 2004. A review of imperative technologies for wastewater treatment I: oxidation technologies at ambient conditions, Advances in Environmental Research 8, 501–551.

Sharma A, Parag RG, Mahulkar A, Pandit AB. 2008. Modeling of hydrodynamic cavitation reactors based on orifice plates considering hydrodynamics and chemical reactions occurring in bubble, Chemical Engineering Journal 143, 201–209.

Shinskey FG. 1988. Process Control Systems: Application, Design and Tuning, 3rd Edition, McGraw-Hill.

Wang L, William RC. 2000. From plant data to process control: ideas for process identification and PID design, Taylor & Francis.

Woo ZW, Chung HY, Lin JJ. 1953. A PID type fuzzy controller with self-tuning scaling factors, Fuzzy Sets and Systems 115(2), 321-326.