Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7080017 | Bioresource Technology | 2014 | 5 Pages |
Abstract
The anaerobic digestion of streptomycin bacterial residues, solutions with hazardous waste treatments and bioenergy recovery, was tested in laboratory-scale digesters at 35 °C at various organic loading rates (OLRs). The methane production and biomass digestion were efficient at OLRs below 2.33 gVS Lâ1 dâ1 but were deteriorated as OLR increased because of the increased total ammonia nitrogen (TAN) concentration from cell protein decay. The thermal-alkaline pretreatment with 0.10 NaOH/TS at 70 °C for 2 h significantly improved the digestion performance. With the thermal-alkaline pretreatment, the volumetric reactor productivity and specific methane yield of the pretreated streptomycin bacterial residue increased by 22.08-27.08% compared with those of the unpretreated streptomycin bacterial residue at an OLR of 2.33 gVS Lâ1 dâ1. The volatile solid removal was 64.09%, with less accumulation of TAN and total volatile fatty acid.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Weizhang Zhong, Zaixing Li, Jingliang Yang, Chun Liu, Baokuo Tian, Yongjun Wang, Ping Chen,