fulltext.study @t Gmail

Kinetic evaluation on the degradation process of anaerobic digestion fed with piggery wastewater at different OLRs

Paper ID Volume ID Publish Year Pages File Format Full-Text
2748 129 2016 10 PDF Available
Title
Kinetic evaluation on the degradation process of anaerobic digestion fed with piggery wastewater at different OLRs
Abstract

•A kinetic model considerring the factor of pH, H2 and H2S was developed.•With the increase of OLR, H2 and H2S inhibited the degradation of organic matters.•Initial concentration of COD was the most sensitive parameter.

A kinetic model was developed to predict the degradation of organic matters,biogas production and the intermediate products considering the inhibition of pH, H2 and H2S. The sensitivity of COD, acetate, butyrate and propionate to the kinetic parameters and the influence of pH, H2 and H2S were also analysed. The results showed that the model could be well used to predict the anaerobic process. The maximum kinetic constants corresponding to the degradation of organic matters appeared at 5.3 kg COD/m3. From the degradation kinetic values of acetate, butyrate and propionate, it could be seen that the order of VFAs converted into methane was propionate > butyrate > acetate; From the degradation kinetic value of COD, it could be seen that the order of COD converted into VFAs was acetate > butyrate > propionate. With the increase of OLR, there were inhibitions existing in the anaerobic digester which showed up in the increase of concentration of H2 and H2S. Through the sensitivity analysis, the initial concentration of COD was the most sensitive parameter which made great influence on the anaerobic digestion process.

Keywords
Anaerobic processes; Biogas; Biokinetics; Kinetic parameters; Modelling; Inhibition
First Page Preview
Kinetic evaluation on the degradation process of anaerobic digestion fed with piggery wastewater at different OLRs
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 113, 15 September 2016, Pages 123–132
Authors
, , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us