Enhancing biogas production from vinasse in sugarcane biorefineries: Effects of urea and trace elements supplementation on process performance and stability

被引：54

作者：

Janke, Leandro ^{[1
,2
]}

Leite, Athaydes F. ^{[3
]}

Batista, Karla ^{[3
]}

Silva, Witan ^{[1
]}

Nikolausz, Marcell ^{[3
]}

Nelles, Michael ^{[1
,2
]}

Stinner, Walter ^{[1
]}

机构：

[1] Deutsch Biomasseforschungszentrum Gemeinnutzige, Dept Biochem Convers, Torgauer Str 116, D-04347 Leipzig, Germany

[2] Univ Rostock, Chair Waste Management, Fac Agr & Environm Sci, Justus von Liebig Weg 6, D-18059 Rostock, Germany

[3] UFZ Helmholtz Ctr Environm Res, Dept Environm Microbiol, Permoserstr 15, D-04318 Leipzig, Germany

来源：

BIORESOURCE TECHNOLOGY | 2016年 / 217卷

关键词：

Sugarcane vinasse; Anaerobic digestion; Process stability; Biogas productivity; VOLATILE FATTY-ACIDS; ANAEROBIC-DIGESTION; AMMONIA INHIBITION; WASTE; STILLAGE; REACTORS; OPTIMIZATION; CHALLENGES;

D O I：

10.1016/j.biortech.2016.01.110

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In this study, the effects of nitrogen, phosphate and trace elements supplementation were investigated in a semi-continuously operated upflow anaerobic sludge blanket system to enhance process stability and biogas production from sugarcane vinasse. Phosphate in form of KH2PO4 induced volatile fatty acids accumulation possibly due to potassium inhibition of the methanogenesis. Although nitrogen in form of urea increased the reactor's alkalinity, the process was overloaded with an organic loading rate of 6.1 g COD L-1 d(-1) and a hydraulic retention time of 3.6 days. However, by supplementing urea and trace elements a stable operation even at an organic loading rate of 9.6 g COD L-1 d(-1) and a hydraulic retention time of 2.5 days was possible, resulting in 79% higher methane production rate with a stable specific methane production of 239 mL g COD-1. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：10 / 20

页数：11

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