Enhancement of swine manure anaerobic digestion using membrane-based NH3 extraction

被引：11
作者：
Rivera, Fanny [1 ,2 ]
Villareal, Luis [1 ]
Pradanos, Pedro [1 ,2 ]
Hernandez, Antonio [1 ,2 ]
Palacio, Laura [1 ,2 ]
Munoz, Raul [1 ,3 ]
机构：
[1] Univ Valladolid, Inst Sustainable Proc, Dr Mergelina S-N, Valladolid 47011, Spain
[2] Univ Valladolid, Sci Fac, Dept Appl Phys, Valladolid 47011, Spain
[3] Univ Valladolid, Dept Chem Engn & Environm Technol, Valladolid 47011, Spain
来源：
BIORESOURCE TECHNOLOGY | 2022年 / 362卷
关键词：
Ammonia recovery; Anaerobic digestion; Biogas production; CSTR bioreactor; Flat sheet membranes; AMMONIA INHIBITION; MASS-TRANSFER; RECOVERY; REMOVAL; BIOGAS; NANOFILTRATION; CONTACTORS; CHARGE;
D O I：
10.1016/j.biortech.2022.127829
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The influence of suspended solids and pH in anaerobically digested piggery wastewater on membrane-based NH3 extraction was evaluated in batch tests. The increase in pH in the anaerobic broth from 8 to 9 resulted in an increase in NH3 removal efficiencies from 15.8 % +/- 0.1 % to 20.9 % +/- 0.4 % regardless of the suspended solids. The influence of membrane based NH3 extraction on piggery wastewater treatment was also assessed in a CSTR interconnected with PTFE membrane modules. The decrease in TKN concentrations mediated by membrane operation induced an increase in CH4 yield from 380.4 +/- 84.9 up to 566.1 +/- 7.8 NmLCH(4) g VS fed-1. Likewise, COD and VS removal efficiencies significantly increased from 33.0 % +/- 2.0 % and 25.7 % +/- 2.3 % up to 61.8 % +/- 1.3 % and 37.9 % +/- 1.8 %, respectively. Interestingly, the decrease in NH3 concentration entailed a complete assimilation of VFA.
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收藏
页数：9
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