氢自养反硝化细菌对纳米铁沉降性能的影响

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英文篇名：Effect of hydrogenotrophic bacteria on sedimentation of nanoscale zero-valent iron 作者：刘瑞阳 ; 岳俊杰 ; 韩温诺 ; 安毅 英文作者：Liu Ruiyang;Yue Junjie;Han Wennuo;An Yi;School of Environmental Science and Safety Engineering,Tianjin University of Technology;Innovative Team of Monitoring and Precaution for Cropland Environment,Institute of Agro-Environmental Protection,Ministry of Agriculture; 关键词：纳米零价铁 ; 氢自养反硝化细菌 ; 腐殖酸 ; 沉降性 英文关键词：nanoscale zero-valent iron;;hydrogenotrophic bacteria;;humic acid;;sedimentation 中文刊名：工业水处理 英文刊名：Industrial Water Treatment 机构：天津理工大学环境科学与安全工程学院;农业部环境保护科研监测所产地环境监测与预警创新团队; 出版日期：2019-10-20 出版单位：工业水处理 年：2019 期：10 基金：国家自然科学基金项目(41573107) 语种：中文; 页：49-52 页数：4 CN：12-1087/X ISSN：1005-829X 分类号：X523

摘要

通过静态沉降实验,考察了氢自养反硝化细菌(HTB)在不同水质条件下对纳米零价铁(nZVI)沉降性能的影响。结果表明:当体系中腐殖酸(HA)质量浓度为10 mg/L时,1/3HTB对nZVI沉降性的抑制作用最明显。K+和Ca~(2+)对nZVI的沉降有促进作用;K+浓度为3、6 mmol/L时,HTB对nZVI的沉降性有抑制作用,在不同浓度Ca~(2+)条件下,HTB对nZVI的沉降性均有促进作用,可加速nZVI的沉降。
        Static sedimentation experiments were conducted to investigate the effects of hydrogenotrophic bacteria(HTB) on the sedimentation of nZVI under different water quality conditions. The experimental results showed that when the concentration of HA in the system was 10 mg/L,1/3 HTB had the most obvious inhibitory effect on the sedimentation of nZVI. Both K+and Ca~(2+)promoted the sedimentation of nZVI. When the concentration of K+in the system was 3 or 6 mmol/L, HTB inhibited the sedimentation of nZVI. However, when Ca~(2+)was present in the system, HTB accelerated the sedimentation of nZVI.

引文

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