黄药类捕收剂对嗜酸氧化亚铁硫杆菌的毒害机理  

Toxicity mechanism of xanthate collectors on Acidthiobacillus ferrooxidans

作　　者：董颖博[1] 林海[1] 温子龙[1] 

机构地区：[1]金属矿山高效开采与安全教育部重点实验室,北京科技大学土木与环境工程学院,北京100083

出　　处：《化工学报》2012年第6期1883-1887,共5页CIESC Journal

基　　金：国家自然科学基金项目(51174017)~~

摘　　要：引言随着微生物技术的发展及在矿物加工工程领域内的应用,生物浸矿技术越来越受到重视,国内外在这一领域的研究近年来突飞猛进,从浸矿用微生物的选育、The effects and toxicity mechanism of xanthate collectors（ethyl xanthate,isopropyl xanthate,butyl xanthate,isoamyl xanthate）on the activity of bacteria（i.e.,Acidithiobacillus ferrooxidans,LD-1）were investigated.It was shown that alcohols and CS2 produced by the reaction of xanthate collectors and sulfuric acid are toxic to LD-1 bacteria.This could decrease the oxidation activity of LD-1 bacteria.With increasing xanthate molecular weight,the absorption properties and permeability of alcohols on the surface of bacteria became increasingly stronger.So the inhibition effect of alcohols on LD-1 bacteria became more and more strong.With increasing carbon chain length,the amount of CS2 produced by the reaction of xanthate and sulfuric acid decreased gradually at the same dosage of xanthate.And so the inhibition effect of CS2 on LD-1 bacteria became more and more weak.Therefore,xanthate collectors with different lengths of carbon chain had different inhibition effects on LD-1 bacteria.

关 键 词：嗜酸氧化亚铁硫杆菌 黄药类捕收剂 毒害机理 吸附作用 

分 类 号：TD925.5[矿业工程—选矿]