The absolute concentration and bioavailability of trace elements: Two vital parameters affecting anaerobic digestion performance of chicken manure leachate

被引：29

作者：

Cai, Yafan ^{[1
,2
]}

Janke, Leandro ^{[2
,3
]}

Meng, Xingyao ^{[4
]}

Zheng, Zehui ^{[5
]}

Zhao, Xiaoling ^{[1
]}

Proeter, Juergen ^{[2
]}

Schaefer, Franziska ^{[2
]}

机构：

[1] Zhengzhou Univ, Sch Chem Engn, Kexue Dadao 100, Zhengzhou 450001, Peoples R China

[2] Deutsch Biomassforschungszentrum Gemeinnutzige Gm, Dept Biochem Convers, Torgauer Str 116, D-04347 Leipzig, Germany

[3] Swedish Univ Agr Sci, Dept Energy & Technol, Box 7032, S-75007 Uppsala, Sweden

[4] Beijing Technol & Business Univ, State Environm Protect Key Lab Food Chain Pollut, Beijing 100048, Peoples R China

[5] China Agr Univ, Coll Agron & Biotechnol, Biomass Engn Ctr, Beijing 100193, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2022年 / 350卷

关键词：

Anaerobic digestion; Trace elements; EDTA-Na-2; Chicken manure leachate; Bioavailability; ORGANIC LOADING RATE; CO-DIGESTION; MICROBIAL COMMUNITY; BIOGAS PRODUCTION; FOOD WASTE; SUPPLEMENTATION; METHANOGENESIS; OPTIMIZATION; SULFIDE; AMMONIA;

D O I：

10.1016/j.biortech.2022.126909

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

It is currently unclear whether trace elements (TEs) deficiency is due to low bioavailability or low absolute TEs concentrations, especially in high-pH anaerobic digestion (AD) systems. A mixed solution of TEs and EDTA-Na-2 were used separately in mono-AD of chicken manure (CM) leachate to investigate this research gap. The results showed relatively low bioavailability of Fe, Mn, and Zn. The bioavailability of all TEs remained stable along with a gradual increase in total ammonia nitrogen concentration. Both TE and EDTA-Na-2 supplementation improved the bioavailability of TEs, but TEs supplementation also gave a high proportion of soluble TEs. Adding TEs improved methane production efficiency (+38.3%) and decreased the H2S content. The exchangeable fraction of specific TE (Mo) in H-2/CO2 pathway was higher in the TEs treatment. TEs bioavailability and absolute concentrations of available TEs are critical aspects that need to be scrutinized to assess the risk of TEs deficiency.

引用

页数：11

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