Discontinuous biomass recycling as a successful strategy to enhance continuous hydrogen production at high organic loading rates

被引：19

作者：

de Jesus Montoya-Rosales, Jose ^{[1
]}

Palomo-Briones, Rodolfo ^{[1
]}

Celis, Lourdes B. ^{[1
]}

Etchebehere, Claudia ^{[2
]}

Razo-Flores, Elias ^{[1
]}

机构：

[1] Inst Potosino Invest Cient & Tecnol AC, Div Ciencias Ambientales, Camino Presa San Jose 2055,Lomas 4a Secc, San Luis Potosi 78216, San Luis Potosi, Mexico

[2] Biol Res Inst Clemente Estable, BioGem Dept, Microbial Ecol Lab, Av Italia 3318, Montevideo, Uruguay

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2020年 / 45卷 / 35期

关键词：

Biomass concentration; Carboxylic acids; Dark fermentation; Specific organic loading rate; Suspended-biomass reactor; CHEESE WHEY; H-2; PRODUCTION; FERMENTATION; INHIBITION; BIOREACTOR; INSIGHTS; BAGASSE;

D O I：

10.1016/j.ijhydene.2020.04.265

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel strategy to discontinuously increase the biomass concentration in a continuous stirred-tank reactor was evaluated to enhance the performance of dark fermentation. Different concentrations of biomass were evaluated at organic loading rates (OLR) ranging from 90 to 160 g lactose/L-d with a hydraulic retention time (HRT) of 6 h. The study revealed that the discontinuous increase of biomass enhanced the hydrogen (H-2) production rates and carboxylic acids concentrations by 19-25% and 8-23%, respectively. In particular, a maximum H-2 production rate of 30.8 L H-2/L-d with carboxylic acids concentration of 20 g/L was reached at an OLR of 138 g lactose/L-d with a biomass concentration of 15 g volatile suspended solids/L. The analysis of microbial communities showed the co-dominance of Clostridium and lactic acid bacteria. Overall, the discontinuous increase of biomass was an effective strategy to improve the performance of suspended-biomass reactors operated at high OLR and low HRT. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：17260 / 17269

页数：10

共 36 条

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