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Application of biocoagulants in dye wastewater treatment: Development of a new cavigulation methodology using cavitation and coagulation
6th World Congress on Biotechnology
Vinay M Bhandari1, Krati Sharma1, Chethana M1, Laxmi Gayatri Sorokhaibam1, Vivek V Ranade1 and Deepak J Killedar2
1CSIR-National Chemical Laboratory, India 2Shri Govindram Seksaria Institute of Technology and Science, India
ScientificTracks Abstracts: J Biotechnol Biomater
DOI:
Abstract
CaviGulation, a hybrid process by appropriately integrating cavitation and coagulation as a newer technology has been successfully explored for dye wastewater treatment. An eco-friendly approach has been developed by using biocoagulants such as Moringa oleifera, Cicer arietinum and Acanthocereus tetragonus (triangle cactus) and also using commercial inorganic coagulants e.g., PAC SAB 18 and Iron (III) chloride. Removal of Congo red dye was studied and effect of various parameters such as initial dye concentration (50 and 100 ppm), pH (3-7), coagulant dose etc., has been investigated in detail. CaviGulation (Acoustic cavitation/Sonication+Coagulation) shows increased reduction of 48%, 27%, 33%, 24% and 29% over individual coagulation using PAC SAB 18, Moringa oleifera, Acanthocereus tetragonus, Iron (III) chloride and Cicer arietinum respectively, while no reduction was observed with acoustic cavitation alone. The results also indicate that coagulant dose can be reduced by more than half by adjusting pH to 3. The results of this work conclusively indicate cavitation based technique using coagulants as a promising alternative for effective dye wastewater treatment. The use of bio-coagulant and the developed hybrid process can also find applications in industrial wastewater treatment, in general and can provide techno-economically feasible process for environmental pollution control.Biography
Vinay M Bhandari has completed his PhD in Chemical Engineering in 1993 and has more than 25 years of experience. He is currently working as a Senior Principal Scientist at CSIR-National Chemical laboratory, Pune. His research interests include chemical engineering, separation technology and environmental pollution control. He was invited as a Visiting Faculty at Tohoku University, Japan (1998-99) and as a Visiting Scientist at Korea Institute of Energy Research, South Korea (2004-2005). He has more than 130 publications/presentations, filed 4 patents and has recently authored a book “Industrial Wastewater Treatment, Recycling & Reuse” (Elsevier, 2014).
Email: vm.bhandari@ncl.res.in
