Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
17756 | Enzyme and Microbial Technology | 2009 | 5 Pages |
Abstract
A bioreactor packed with chitosan immobilized sulfide-oxidase from Streptomyces species LD048 was developed to treat a liquid stream of sulfide. The inoculation system was composed of glass with a 0.7 L working volume and enzyme activity of 2 mmol S gâ1 carrier. The sulfide removal efficiency was almost 100% when the volumetric loading was increased up to 3.9 mmol S Lâ1 hâ1 at a space velocity of 18 hâ1. The maximal elimination capacity was 22.1 mmol S Lâ1 hâ1 with a space velocity of 72 hâ1. When the aeration was increased from 0.05 to 0.1 L minâ1, the average removal efficiency improved from 81% to 94%. A removal efficiency of 90% was obtained after 15 days of operation with a load rate of 8.9 mmol S Lâ1 hâ1 and a space velocity of 14.28 hâ1. An operational equation based on the ideal plug flow bioreactor and the Michaelis-Menten model predicted the performance of this bioreactor.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Bioengineering
Authors
Chun-Ming Zhang, Xing-She Luan, Min Xiao, Jian Song, Lili Lu, Xiao Xiao,