Impact of alkali and heat pretreatment on the pathway of hydrogen production from sewage sludge

被引：17

作者：

Wei SuZhen ^{[1
]}

Xiao BenYi ^{[1
]}

Liu JunXin ^{[1
]}

机构：

[1] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 2010年 / 55卷 / 08期

基金：

中国国家自然科学基金;

关键词：

sewage sludge; alkali pretreatment; heat pretreatment; hydrogen production; WASTE-ACTIVATED-SLUDGE; ANAEROBIC-DIGESTION; BIOHYDROGEN PRODUCTION; WATER SLUDGE; FERMENTATION; SOLUBILIZATION; FEASIBILITY; CULTURES; PH;

D O I：

10.1007/s11434-009-0591-7

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Due to the presence of various types of hydrogen-producing bacteria and numerous organics such as protein and carbohydrate, sewage sludge is a potential material for biological hydrogen production. In this study, two batch tests were carried out to investigate the impact of alkali and heat pretreatment on the pathway of hydrogen production from sewage sludge. The results showed that the heat treatment had a stronger lethal effect on bacteria than the alkali treatment, and could effectively kill hydrogen-consuming bacteria. The heat treatment was more suitable for enriching acidophilic hydrogen-producing bacteria, while the alkali treatment was more suitable for enriching basophilic hydrogen-producing bacteria. A maximum hydrogen production of 10.32 mL/g-COD from alkali pretreated sludge was obtained at an initial pH of 11; while a maximum hydrogen production of 8.94 mL/g-COD from heat pretreated sludge was obtained at an initial pH of 5. Hydrogen production in alkali conditions (pH > 9) from alkali pretreated sludge mainly depended on the fermentation of protein by protein-utilizing bacteria; whereas hydrogen production in acidic conditions (pH < 6) from heat pretreated sludge mainly depended on the fermentation of carbohydrate by glucose-utilizing bacteria.

引用

页码：777 / 786

页数：10

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