A comprehensive study of volatile fatty acids production from batch reactor to anaerobic sequencing batch reactor by using cheese processing wastewater

被引：52

作者：

Atasoy, Merve ^{[1
]}

Eyice, Ozge ^{[2
]}

Cetecioglu, Zeynep ^{[1
]}

机构：

[1] KTH Royal Inst Technol, Dept Chem Engn, SE-10044 Stockholm, Sweden

[2] Queen Mary Univ London, Sch Biol & Chem Sci, London E1 4NS, England

来源：

BIORESOURCE TECHNOLOGY | 2020年 / 311卷

关键词：

Volatile fatty acids; Anaerobic granular sludge; Cheese production wastewater; Bacterial community; ASBR; ORGANIC LOADING RATE; ACIDOGENIC FERMENTATION; CARBOXYLIC-ACIDS; GRANULAR SLUDGE; RETENTION TIME; FOOD WASTE; DIGESTION; PH; IMPACT; VFA;

D O I：

10.1016/j.biortech.2020.123529

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Volatile fatty acids (VFAs) has great potential for closed-loop production in dairy industries via resource recovery from waste-streams. In the current study, the transition of VFA production from batch reactor to anaerobic sequencing batch reactor (ASBR) by using cheese industry wastewater under alkali pH was evaluated with respect to seed sludge structure, microbial diversity and reactor type. The transition from the batch reactor to the ASBR demonstrated that the maximum VFA production yield (g COD/g SCOD) was comparable in two reactors (batch: 0.97; ASBR: 0.94), whereas, the dominant acid type was different (batch: 49% lactic acid; ASBR: 80% propionic acid). There was a significant correlation between the productions of butyric acid with Gracilibacteraceae and Desulfovibrionaceae; propionic acid with Desulfovibrionaceae and Synergistaceae; lactic acid with Pseudomonadaceae and Rhodocyclaceae. The high VFA production efficiency can be achieved by long term reactor operation, which enables the shift from industrial waste-streams to biorefineries.

引用

页数：10

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