典型文献
Mechanisms of Pb(Ⅱ)coprecipitation with natrojarosite and its behavior during acid dissolution
文献摘要：
Lead(Pb)coprecipitation with jarosite is common in natural and engineered environments,such as acid mine drainage(AMD)sites and hydrometallurgical industry.Despite the high relevance for environmental impact,few studies have examined the exact interaction of Pb with jarosite and the dissolution behavior of each phase.In the present work,we demon-strate that Pb mainly interacts with jarosite in four modes,namely incorporation,occlusion,physically mixing,and chemically mixing.For comparison,the four modes of Pb-bearing na-trojarosite were synthesized and characterized separately.Batch dissolution experiments were undertaken on these synthetic Pb-bearing natrojarosites under pH 2 to simulate the AMD environments.The introduction of Pb decreases the final Fe releasing efficiency of jarosite-type compounds from 18.18％to 3.45％-5.01％,showing a remarkable inhibition of their dissolution.For Pb releasing behavior,PbSO4 dissolves in preference to Pb-substituted natrojarosite,i.e.,(Na,Pb)-jarosite,which primarily results in the sharp increase of Pb releas-ing concentration(＞40 mg/L).PbSO4 occlusion by jarosite-type compounds can significantly reduce the release of Pb.The results of this study could provide useful information regarding Fe and Pb cycling in acidic natural and engineered environments.
文献关键词：
中图分类号：
作者姓名：
Meiqing Shi;Xiaobo Min;Chen Tian;Taixu Hao;Sijie Zhu;Yun Ge;Qingwei Wang;Xu Yan;Zhang Lin
作者机构：
Institute of Environmental Engineering,School of Metallurgy and Environment,Central South University,Changsha 410083,China;Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution,Changsha 410083,China;Water Pollution Control Technology Key Lab of Hunan Province,Changsha 410004,China
文献出处：
引用格式：
[1]Meiqing Shi;Xiaobo Min;Chen Tian;Taixu Hao;Sijie Zhu;Yun Ge;Qingwei Wang;Xu Yan;Zhang Lin-.Mechanisms of Pb(Ⅱ)coprecipitation with natrojarosite and its behavior during acid dissolution)[J].环境科学学报（英文版）,2022(12):128-137
A类：
natrojarosite,jarosite,trojarosite,natrojarosites,releas
B类：
Mechanisms,coprecipitation,its,behavior,during,dissolution,Lead,common,natural,engineered,environments,such,drainage,AMD,hydrometallurgical,industry,Despite,high,relevance,environmental,impact,few,studies,have,examined,exact,interaction,each,phase,In,present,work,demon,strate,that,mainly,interacts,four,modes,namely,incorporation,occlusion,physically,mixing,chemically,For,comparison,bearing,were,synthesized,characterized,separately,Batch,experiments,undertaken,these,synthetic,simulate,introduction,decreases,final,releasing,efficiency,type,compounds,from,showing,remarkable,inhibition,their,PbSO4,dissolves,preference,substituted,Na,which,primarily,results,sharp,increase,concentration,by,significantly,reduce,release,this,study,could,provide,useful,information,regarding,cycling,acidic
AB值：
0.526659
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