Enhancing organic matter removal, biopolymer recovery and electricity generation from distillery wastewater by combining fungal fermentation and microbial fuel cell

被引：41

作者：

Ray, S. Ghosh ^{[1
]}

Ghangrekar, M. M. ^{[2
]}

机构：

[1] Indian Inst Technol, Adv Technol Dev Ctr, Kharagpur 721302, W Bengal, India

[2] Indian Inst Technol, Dept Civil Engn, Kharagpur 721302, W Bengal, India

来源：

BIORESOURCE TECHNOLOGY | 2015年 / 176卷

关键词：

Aspergillus awamori; Chitosan recovery; Distillery wastewater treatment; Fungal pretreatment; Microbial fuel cells; ANAEROBIC TREATMENT; BIOLOGICAL TREATMENT; ENERGY RECOVERY; UASB REACTOR; MEMBRANE; STILLAGE; EFFLUENT; DIGESTION; PLANTS;

D O I：

10.1016/j.biortech.2014.10.158

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

For enhancing organic matter removal from cereal-based distillery stillage two-stage treatment consisting of fermentation by Aspergillus awamori followed by microbial fuel cell (MFC) is proposed. Considerable reduction in total and soluble chemical oxygen demand (COD) up to 70% and 40%, respectively, along with 98% reduction of suspended solids (SS) has been achieved during fungal pretreatment. The process generated chitosan, a useful fermentation byproduct from fungal mycelia, as 0.6-0.7 g/l of settled sludge with mycelium (3.8% solids). Prior treatment of wastewater with fungal strain enhanced the power generation in MFC by 2.9 times at an organic loading rate of 1.5 kg COD/m(3) day, demonstrating soluble COD reduction of 92% in MFC. While treating distillery wastewater, this two-stage integrated biological process demonstrated overall 99% COD removal and almost complete removal of SS, delivering ample scope for scale-up and industrial application to offer effective solution for distillery wastewater treatment. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：8 / 14

页数：7

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