| Literature DB >> 26059405 |
S Kavitha1, S Kaliappan2, S Adish Kumar1, Ick Tae Yeom3, J Rajesh Banu4.
Abstract
In the present study, the influence of NaCl mediated bacterial disintegration of waste activated sludge (WAS) was evaluated in terms of disintegration and biodegradability of WAS. Floc disruption was efficient at 0.03 g/g SS of NaCl, promoting the shifts of extracellular proteins and carbohydrates from inner layers to extractable--soluble layers (90 mg/L), respectively. Outcomes of sludge disintegration reveal that the maximum solubilization achieved was found to be 23%, respectively. The model elucidating the parameter evaluation, explicates that floc disrupted--bacterially disintegrated sludge (S3) showed superior biodegradability of about 0.23 (gCOD/gCOD) than the bacterially disintegrated (S2) and control (S3) sludges of about 0.13 (gCOD/gCOD) and 0.05 (gCOD/gCOD), respectively. Cost evaluation of the present study affords net profits of approximately 2.5 USD and -21.5 USD in S3 and S2 sludge.Entities:
Keywords: Biochemical methane potential; Disintegration; Extracellular polymeric substance; Floc disruption; Waste activated sludge
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Year: 2015 PMID： 26059405 DOI： 10.1016/j.biortech.2015.05.071
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642