Effect of food to vegetable waste ratio on acidogenesis and methanogenesis during two-stage integration

被引：30
作者：
Chakraborty, Debkumar [1 ,2 ]
Mohan, S. Venkata [1 ]
机构：
[1] Indian Inst Chem Technol, CSIR, Bioengn & Environm Sci Lab, EEFF Dept, Hyderabad 500007, Andhra Prades, India
[2] Jain Univ, Dept Food Technol, Ctr Emerging Technol, Bangalore 562112, Karnataka, India
来源：
BIORESOURCE TECHNOLOGY | 2018年 / 254卷
关键词：
Anaerobic digestion; Food waste; Vegetable waste; Lactic acid; Rate kinetics; Methanogenesis; ANAEROBIC-DIGESTION; ACID PRODUCTION; SEWAGE-SLUDGE; HYDROLYSIS; FERMENTATION; REACTOR; DEGRADATION; BIOHYDROGEN; INHIBITION; HYDROGEN;
D O I：
10.1016/j.biortech.2018.01.051
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
' The mixing ratio of food waste (FW) to vegetable waste (VW) (2:3 FW:VW similar to 152.51 g VS and 2:1 FW:VW similar to 137.03 gVS) was optimized using two-stage (LBR-UASB) experimental process depending upon volatile solid (VS) load. The effect of FW to VW ratio was studied in Leach Bed Reactor (LBR) towards leachate production. Results revealed that hydrolysis rate (73.11%), sCOD (3294.3 g/KgVS) and tVFA (2664 g/KgVS) yield was higher in 2:1 FW:VW ratio. Acetate, propionate, lactate and methane yield for 2:3 FW:VW (420 g/KgVS, 87 g/KgVS, 180 g/KgVS and 226.86 ml/gVS respectively) was different from 2:1 FW:VW (340 g/KgVS, 247 g/KgVS, 340 g/KgVS and 218.54 ml/gVS respectively). 2:3 FW:VW ratio depicted higher VS (53.96%) and COD (54.1%) removal than 2:1 FW:VW ratio 46.34% and 41.8% respectively. VW addition regulated pH, restricted propionate and lactate production with enhanced methanogenesis by improving acetate production in two-stage AD process which further boosted process stability and efficiency.
引用
收藏
页码：256 / 263
页数：8
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