排序方式: 共有2条查询结果,搜索用时 15 毫秒
1
1.
Microbial treatment of a styrene-contaminated air stream in a biofilter with high elimination capacities 总被引:3,自引:0,他引:3
A styrene-utilizing mixed microbial culture was isolated and utilized in a biofilter for the biological treatment of a contaminated
air stream. Biofilter media consisted of composted wood bark and yard waste. The biofilters were acclimated at 120 s residence
time and further evaluated at 60 and 30 s gas residence times. The biofilters received organic loading rates of up to 350
g/m3 h. The styrene volumetric removal rate was a function of the organic loading rate and increased with increasing loading rates.
Average volumetric removal rates of 69–118 g/m3 h observed in our studies were higher than reported values for styrene biofilters. Average styrene removal efficiencies ranged
from 65% to 75% (maximum 100%). Axial analysis of styrene concentration along the column indicated that the bulk of the styrene
removal occurred in the first section of the biofilter. Analyses of the media indicated that the moisture content of the first
section (50–55% w/w) was significantly lower than in the second and third sections (65–70% w/w). The pressure drops across
the biofilter were low due to the high concentration of large media particles. The total pressure drops were 1–3, 4–6, and
10–16 mm for the 120-, 60-, and 30-s residence time periods, respectively. Journal of Industrial Microbiology & Biotechnology (2001) 26, 196–202.
Received 04 March 2000/ Accepted in revised form 25 January 2001 相似文献
2.
Biodegradation of dimethyl phthalate with high removal rates in a packed-bed reactor 总被引:7,自引:0,他引:7
Juneson Christopher Ward Owen P. Singh Ajay 《World journal of microbiology & biotechnology》2002,18(1):7-10
Biological treatment of a dimethyl phthalate (DMP)-containing waste stream was evaluated in packed-bed bioreactors using an acclimated mixed bacterial culture. The passive immobilization start-up strategy was successful in the development of a stable biofilm on the packing material in the reactor. Nutrient supplementation significantly improved the removal efficiency. High removal rates with 100% efficiencies of DMP removal were achieved up to the phthalate-loading rate of 560 g/m3 h. 相似文献
1