收藏本站
收藏 | 投稿 | 手机打开
二维码
手机客户端打开本文

Effects of Cu~(2+) and humic acids on degradation and fate of TBBPA in pure culture of Pseudomonas sp. strain CDT

Yini Ma  Yingying Zhao  Yongfeng Wang  Xiangzhen Li  Feifei Sun  Phillippe Francois-Xavier Corvini  Rong Ji  
【摘要】:Soil contamination with tetrabromobisphenol A(TBBPA) has caused great concerns;however, the presence of heavy metals and soil organic matter on the biodegradation of TBBPA is still unclear. We isolated Pseudomonas sp. strain CDT, a TBBPA-degrading bacterium, from activated sludge and incubated it with ~(14)C-labeled TBBPA for 87 days in the absence and presence of Cu~(2+)and humic acids(HA). TBBPA was degraded to organic-solvent extractable(59.4% ± 2.2%) and non-extractable(25.1% ± 1.3%) metabolites,mineralized to CO_2(4.8% ± 0.8%), and assimilated into cells(10.6% ± 0.9%) at the end of incubation. When Cu~(2+)was present, the transformation of extractable metabolites into non-extractable metabolites and mineralization were inhibited, possibly due to the toxicity of Cu~(2+)to cells. HA significantly inhibited both dissipation and mineralization of TBBPA and altered the fate of TBBPA in the culture by formation of HA-bound residues that amounted to 22.1% ± 3.7% of the transformed TBBPA. The inhibition from HA was attributed to adsorption of TBBPA and formation of bound residues with HA via reaction of reactive metabolites with HA molecules, which decreased bioavailability of TBBPA and metabolites in the culture. When Cu~(2+)and HA were both present, Cu~(2+)significantly promoted the HA inhibition on TBBPA dissipation but not on metabolite degradation. The results provide insights into individual and interactive effects of Cu~(2+)and soil organic matter on the biotransformation of TBBPA and indicate that soil organic matter plays an essential role in determining the fate of organic pollutants in soil and mitigating heavy metal toxicity.

知网文化
【相似文献】
中国期刊全文数据库 前20条
1 ;Interaction of humic substances and hematite:FTIR study[J];Journal of Environmental Sciences;2005年01期
2 ;Effects of methyl-CD and humic acid on hydrolytic degradation of the herbicide[J];Journal of Environmental Sciences;2005年01期
3 ;Kinetics of photoelectrocatalytic degradation of humic acid using B_2O_3·TiO_2/Ti photoelectrode[J];Journal of Environmental Sciences;2005年02期
4 ;Influence of humic acid on bioavailability of heavy metals in sediments[J];Chinese Journal of Geochemistry;2006年S1期
5 ;Study on the action and mechanism of humic acids in Kaschin-Beck disease[J];Journal of Environmental Sciences;1991年04期
6 ;Characterization of humic acids extracted from the sediments of the various rivers and lakes in China[J];Journal of Environmental Sciences;2008年11期
7 ;Partitioning of water soluble organic carbon in three sediment size fractions:Effect of the humic substances[J];Journal of Environmental Sciences;2009年01期
8 ;Effects of humic acids and microorganisms on decabromodiphenyl ether, 4,4′-dibromodiphenyl ether and anthracene transportation in soil[J];Science China(Chemistry);2010年04期
9 Hermann H. HAHN;Erhard HOFFMANN;Peter G. WEIDLER;;Effect of humic substances on the precipitation of calcium phosphate[J];Journal of Environmental Sciences;2006年05期
10 VUKOVI Marija;DOMANOVAC Tomislav;BRIKI Felicita;;Removal of humic substances by biosorption[J];Journal of Environmental Sciences;2008年12期
11 ;Dechlorination mechanism of 2,4-dichlorophenol by Ni/Fe nanoparticles in the presence of humic acid[J];Journal of Zhejiang University(Science A:An International Applied Physics & Engineering Journal);2009年01期
12 Holger Lippold;Johanna Lippmann-Pipke;;Comparative characterization of two natural humic acids in the Pearl River Basin, China and their environmental implications[J];Journal of Environmental Sciences;2010年11期
13 ;Study on correlation between humic acid and selenium in Kaschin-Beck disease areas[J];Journal of Environmental Sciences;1991年04期
14 Naman CISSOKO;;Kinetics of 2,4-dichlorophenol dechlorination by Pd-Fe bimetallic nanoparticles in the presence of humic acid[J];Journal of Zhejiang University(Science A:An International Applied Physics & Engineering Journal);2008年01期
15 ;Relationships between humic substance-bound mercury contents and soil properties in subtropical zone[J];Journal of Environmental Sciences;2006年05期
16 ;Photo-induced transformations of Hg(Ⅱ) species in the presence of Nitzschia hantzschiana,ferric ion,and humic acid[J];Journal of Environmental Sciences;2010年01期
17 ;Humic acid and free radical in environment of Kaschin-Beck disease areas[J];Journal of Environmental Sciences;1991年04期
18 ;Removal of humic acid from aqueous solution by cetylpyridinium bromide modified zeolite[J];Journal of Environmental Sciences;2010年09期
19 Thabitha P.Dasari;Huey-Min Hwang;;Effect of humic acids and sunlight on the cytotoxicity of engineered zinc oxide and titanium dioxide nanoparticles to a river bacterial assemblage[J];Journal of Environmental Sciences;2013年09期
20 ;Interaction between uranium and humic acid(Ⅰ):Adsorption behaviors of U(Ⅵ) in soil humic acids[J];Nuclear Science and Techniques;2007年05期
中国重要会议论文全文数据库 前3条
1 Shuang Zhao;Baoyu Gao;Yan Wang;;New Seaweeds Coagulant Aids on Coagulation Performance and Floc Characteristics of Ferric Chloride Coagulant in Kaolin-humic Acid Solution Treatment[A];中国材料大会2012第4分会场:环境功能材料论文集[C];2012年
2 ;Effects of LMWOA on biodegradation of phenantherene by fluorimetry[A];持久性有机污染物论坛2008暨第三届持久性有机污染物全国学术研讨会论文集[C];2008年
3 ;Study on the biodegradation mechanisms of triphenylmethane dyes by the white rot fungus in rice straw medium[A];2006中国微生物学会第九次全国会员代表大会暨学术年会论文摘要集[C];2006年
中国知网广告投放
 快捷付款方式  订购知网充值卡  订购热线  帮助中心
  • 400-819-9993
  • 010-62982499
  • 010-62783978