Reactor models for horseradish peroxidase-catalyzed aromatic removal

被引:26
作者
Buchanan, ID
Nicell, JA
Wagner, M
机构
[1] Univ Alberta, Dept Civil & Environm Engn, Edmonton, AB T6G 2G7, Canada
[2] McGill Univ, Dept Civil Engn & Appl Mech, Montreal, PQ H3A 2K6, Canada
来源
JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE | 1998年 / 124卷 / 09期
关键词
D O I
10.1061/(ASCE)0733-9372(1998)124:9(794)
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Horseradish peroxidase catalyzes the oxidation of aqueous aromatic compounds by hydrogen peroxide, resulting in the formation of polymers, which spontaneously precipitate from solution. This process is being investigated as a means of removing toxic phenols and aromatic amines from industrial wastewaters. Models of plug-flow reactors and continuous-flow stirred tank reactors (CFSTR) were developed for the horseradish peroxidase-peroxide-aromatic substrate system as an aid for reactor design and process optimization. The models were verified for phenol removal at pH 7 and 25 degrees C, both in the presence and absence of high molecular weight polyethylene glycol, a protective additive. Modeling suggests that the rate of enzyme inactivation is lower in a CFSTR than in a plug-flow reactor. Nevertheless, no single optimal reactor configuration can be identified, because the best configuration depends on the initial phenol concentration, the desired effluent quality, and the selected retention time. The CFSTR performance could be improved further by engineering a system that returns effluent active enzyme to the treatment process.
引用
收藏
页码:794 / 802
页数:9
相关论文
共 25 条
[1]   CHARACTERIZATION OF REACTION-PRODUCTS FROM THE ENZYME-CATALYZED OXIDATION OF PHENOLIC POLLUTANTS [J].
AITKEN, MD ;
MASSEY, IJ ;
CHEN, TP ;
HECK, PE .
WATER RESEARCH, 1994, 28 (09) :1879-1889
[2]  
[Anonymous], PEROXIDASES CHEM BIO
[3]  
Buchanan ID, 1998, J CHEM TECHNOL BIOT, V72, P23, DOI 10.1002/(SICI)1097-4660(199805)72:1<23::AID-JCTB867>3.0.CO
[4]  
2-N
[5]  
Buchanan ID, 1997, BIOTECHNOL BIOENG, V54, P251, DOI [10.1002/(SICI)1097-0290(19970505)54:3<251::AID-BIT6>3.0.CO
[6]  
2-E, 10.1002/(SICI)1097-0290(19970505)54:3&lt
[7]  
251::AID-BIT6&gt
[8]  
3.0.CO
[9]  
2-E]
[10]   Removal of phenols from a foundry wastewater using horseradish peroxidase [J].
Cooper, VA ;
Nicell, JA .
WATER RESEARCH, 1996, 30 (04) :954-964