Improvement of the degradation of sulfate rich wastewater using sweetmeat waste (SMW) as nutrient supplement

Journal of Hazardous Materials
Bidus Kanti DasJayanta Bhattacharya

Abstract

External dosing of sweetmeat waste (SMW) dosing into exhausted upflow packed bed bioreactor (PBR) resulted in prompt reactivation of SO4(2-) removal. Different SMW concentrations in terms of chemical oxygen demand (COD)/SO4(2-) ratios (1, 2, 4 and 8) were introduced into four identical PBR where process stability was found within 3 weeks of operation. SO4(2-) removal was proportional to COD/SO4(2-) ratios up to 4 at which maximum sulfate removal (99%) was achieved at a rate of 607 mg/d. The value of COD consumption:SO4(2-)removal was much higher at ratio 4 than 8 whereas, ratio 2 was preferred over all. Net effluent acetate concentration profile and total microbial population attached to the reactor matrices were corresponding to COD/SO4(2-) ratio as 4>8>2>1. Sulfate reducing bacteria (SRB) population was found to be inversely proportional to COD/SO4(2-) ratio in which acetate oxidizing SRB and fermentative bacteria were the dominant.

References

Mar 28, 2002·Applied and Environmental Microbiology·Jutta KleikemperJosef Zeyer
Dec 21, 2007·Journal of Hazardous Materials·Aijie WangDuujong Lee
Mar 20, 2008·Biotechnology and Bioengineering·Matthew J L McMahon, Andrew J Daugulis
Apr 4, 2009·Applied Microbiology and Biotechnology·Changsoo LeeSeokhwan Hwang
Apr 16, 2010·Bioresource Technology·Gustavo MockaitisEugênio Foresti
May 25, 2010·FEMS Microbiology Ecology·Matthias KoschorreckKatrin Wendt-Potthoff
Jul 26, 2011·Environmental Science & Technology·Lin Ye, Tong Zhang
Mar 31, 2012·Journal of Environmental Management·Sueli M BertolinoVersiane A Leão
Oct 4, 2012·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Irene Sánchez-AndreaJose L Sanz

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Citations

Jun 13, 2019·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Silvio MontalvoIleana Pereda
Jul 16, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Ya-Nan Xu, Yinguang Chen

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