Towards zero waste production in the paint industry wastewater using an agro-based material in the treatment train

Environmental Monitoring and Assessment
S VishaliK Ashish Anand

Abstract

An attempt has been made to evaluate the use of natural, agro-based material, Moringa oleifera as a coagulant in the treatment of recreated water-based paint effluent. The treatment train sequence comprising coagulation, flocculation, sedimentation, sand filtration, and membrane filtration was used. The efficiency was evaluated in terms of color and turbidity. The influence of experimental parameters such as eluent type, eluent concentration, coagulant dose, coagulant-eluate volume, initial effluent pH, and initial effluent concentration was examined. The recommended conditions to yield maximum removal efficiency are 80 mL of eluate prepared using 3 g of M. oleifera seed powder and 1 N NaCl, under actual pH, to treat a liter of effluent. The treated supernatant from coagulation unit was passed through a sand filtration setup and a membrane filtration, with a maximum removal of color above 95%. The results affirmed the positive coagulation properties of M. oleifera, which could serve as a better alternative for chemical coagulant. The optimized treatment conditions derived for the recreated paint effluent were applied in the real paint effluent treatment. An opportunity was identified for re-using treated wastewater, as a coolin...Continue Reading

References

Jul 4, 2006·Journal of Hazardous Materials·M A AboulhassanM Baudu
Mar 22, 2007·Journal of Hazardous Materials·Bahadir K KörbahtiAbdurrahman Tanyolaç
Jun 28, 2008·Journal of Hazardous Materials·Xiang-Juan Ma, Hui-Long Xia
Nov 8, 2011·Journal of Environmental Management·Akshaya Kumar VermaPuspendu Bhunia
Feb 22, 2012·Colloids and Surfaces. B, Biointerfaces·Mohammad Mansour Saleh SaifM N V Prasad

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Citations

Jul 4, 2021·Journal of Environmental Management·Surya Nair KAdani Azhoni

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