Role of Vitamins B-3 and C in the Fashioning of Granules in UASB Reactor Sludge
- 203 Downloads
Whereas a myriad of possible factors have been reported which effect the formation of granules in a upflow anaerobic sludge blanket (UASB) reactor and influence their properties, there is no study on the effect of vitamins on the granulation of UASB reactor sludge. The present study was undertaken to bridge this gap. It was seen that vitamins helped in better granule formation—as reflected by favorable size distribution, sludge volume index, and settling velocity—compared to controls. The vitamin-spiked reactors also achieved >85 % COD removal efficiency in half the number of days the unspiked reactors took. The vitamin supplements were effective at concentrations ≤ 1 mg/l. Hence, their use in expediting granule formation as also in developing better-quality granules appears economically viable.
KeywordsUASB Sludge granules Vitamin B3 Vitamin C Wastewater
RS thanks the Council for Scientific and Industrial Research, New Delhi, for Research Associateship, and TA and SAA thank the Ministry of Water Resources, Government of India, for support in the form of an R&D project.
- 10.Zhang, Z., Quan, T., Li, P., Zhang, Y., Sugiura, N., & Maekawa, T. (2004). Study on methane fermentation and production of vitamin B12 from alcohol waste slurry. Applied Biochemistry and Biotechnology-Part A Enzyme Engineering and Biotechnology, 115(40238), 1033–1039.Google Scholar
- 11.Taconi, K.A. (2004). Methanogenic generation of biogas from synthesis-gas fermentation wastewaters. PhD (Chemical Engineering) thesis, Mississippi State University, USA.Google Scholar
- 19.APHA (2005). Standard Methods for the Examination of Water and Waste Water, American Public Health Association, Washington DC.Google Scholar
- 23.Sankar Ganesh, P., Ramasamy, E. V., Gajalakshmi, S., & Abbasi, S. A. (2005). Extraction of volatile fatty acids (VFAs) from water hyacinth using inexpensive contraptions, and the use of the VFAs as feed supplement in conventional biogas digesters with concomitant final disposal of water hyacinth as vermicompost. Biochemical Engineering Journal, 27(1), 17–23CrossRefGoogle Scholar
- 26.Abbasi, S. A., & Nipaney, P. C. (1994). Potential of aquatic weed Salvinia molesta (Mitchell) for water treatment and energy recovery. Indian Journal of Chemical Technology, 1(4), 204–213.Google Scholar
- 30.Laguna, A., Ouattara, A., Gonzalez, R. O., Baron, O., Fama, G., El Mamouni, R., Guiot, S., Monroy, O., & Macarie, H. (1999). A simple and low cost technique for determining the granulometry of upflow anaerobic sludge blanket reactor sludge. Water Science and Technology, 40(8), 1–8.CrossRefGoogle Scholar