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Performance of the lysozyme for promoting the waste activated sludge biodegradability
- Source :
- Bioresource Technology. 170:108-114
- Publication Year :
- 2014
- Publisher :
- Elsevier BV, 2014.
-
Abstract
- The fresh waste activated sludge (WAS) from a lab-scale sequencing batch reactor was used to determine the performance of the lysozyme for promoting its biodegradability. The results showed that a strict linear relationship presented between the degree of disintegration (DDM) of WAS and the lysozyme incubation time from 0 to 240min (R(2) was 0.992, 0.995 and 0.999 in accordance with the corresponding lysozyme/TS, respectively). Ratio of net SCOD increase augmented significantly by lysozyme digestion for evaluating the sludge biodegradability changes. Moreover, the protein dominated both in the EPS and SMP. In addition, the logarithm of SMP contents in supernatant presented an increasing trend similar with the ascending logarithmic relation with the lysozyme incubation time from 0 to 240min (R(2) was 0.960, 0.959 and 0.947, respectively). The SMP, especially the soluble protein, had an important contribution to the improvement of WAS biodegradability.
- Subjects :
- Time Factors
Environmental Engineering
Sewage
Waste management
Renewable Energy, Sustainability and the Environment
Chemistry
Proteins
Bioengineering
Sequencing batch reactor
General Medicine
Biodegradation
Waste Disposal, Fluid
Carbon
Incubation period
chemistry.chemical_compound
Biodegradation, Environmental
Activated sludge
Extracellular polymeric substance
Linear relationship
Polysaccharides
Muramidase
Food science
Lysozyme
Digestion
Waste Management and Disposal
Subjects
Details
- ISSN :
- 09608524
- Volume :
- 170
- Database :
- OpenAIRE
- Journal :
- Bioresource Technology
- Accession number :
- edsair.doi.dedup.....2127432577e688aeb9bc32d81a8989a3