您好，欢迎访问广东省农业科学院 机构知识库！
广东省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Reductive transformation of tetrabromobisphenol A by sulfidated nano zerovalent iron

文献类型： 外文期刊

作者： Li, Dan 1 ; Mao, Zhe 1 ; Zhong, Yin 1 ; Huang, Weilin 3 ; Wu, Yundang 1 ; Peng, Ping'an 1 ;

作者机构： 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China

2.Guangdong Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Agr Environm Pollut Integrated, Guangzhou, Guangdong, Peoples R China

3.Rutgers State Univ, Dept Environm Sci, 14 Coll Farm Rd, New Brunswick, NJ 08901 USA

4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

关键词： TBBPA;S-nZVI;Sulfidation;Transformation pattern;Reusability;Aging

期刊名称：WATER RESEARCH （ 影响因子：11.236； 五年影响因子：11.547 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Recent studies showed that sulfidated nano zerovalent iron (S-nZVI) is a better alternative to non-sulfidated nano zerovalent iron (NS-nZVI) commonly used for contaminated site remediation. However, its reactivity with different halogenated pollutants such as tetrabromobisphenol A (TBBPA) remains unclear. In this study, we explored the reductive transformation of TBBPA by S-nZVI and compared it with that by NS-nZVI. The results showed that over 90% of the initial TBBPA (20 mg L-1) was transformed by S-nZVI within 24 h of reaction, which was 1.65 times as high as that for NS-nZVI. The TBBPA transformation by S-nZVI was well described by a pseudo-first-order kinetic model, whilst that by NS-nZVI was well fitted by a three-parameter single exponential decay model. After 11 weeks of aging, S-nZVI was still able to transform up to 56% of the initial TBBPA within 24 h of reaction; by contrast, the two-week aged NS-nZVI lost more than 95% of its original capacity to transform TBBPA. Moreover, S-nZVI showed only an approximately 20% decrease in its capacity to transform TBBPA in the seventh cycle, while NS-nZVI was no longer able to transform TBBPA in the fourth cycle. XPS analysis suggested the formation of FeS layer on S-nZVI surface and electrochemical analysis revealed an elevated electron transfer capacity of S-nZVI, which were likely responsible for the superior performances of S-nZVI in TBBPA transformation. While the transformation rate of TBBPA by S-nZVI decreased with increasing initial concentration of TBBPA, it showed an increasing trend with increasing S/Fe ratio and initial concentration of S-nZVI. The study indicated that S-nZVI has the potential to be a promising alternative to NS-nZVI for remediation of TBBPA-contaminated aquatic environments. (C) 2016 Elsevier Ltd. All rights reserved.

  • 相关文献

[1]Mulberry leaf polyphenols delay aging and regulate fat metabolism via the germline signaling pathway in Caenorhabditis elegans. Zheng, Shanqing,Liao, Sentai,Zou, Yuxiao,Qu, Zhi,Shen, Weizhi,Shi, Ying.

[2]Overexpression of SIRT6 in Porcine Fetal Fibroblasts Attenuates Cytotoxicity and Premature Senescence Caused by D-Galactose and Tert-Butylhydroperoxide. Xie, Xiaoxian,Zhang, Hao,Wang, Liangliang,Zhang, Ailing,Li, Jiaqi,Xie, Xiaoxian,Zhang, Hao,Wang, Liangliang,Zhang, Ailing,Li, Jiaqi,Gao, Ping,Xie, Shuihua.

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：广东省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台