A.ferrooxidans培养过程中Al/Fe(摩尔比)对铁矿物形成产物的影响  

The effect of Al/Fe mole rates on iron mineral products formed during the cultivation process of A. ferrooxidans

作　　者：姜艾伶 刘佳欣 熊慧欣[1] 程琳 齐维毅 JIANG Ai-ling;LIU Jia-xin;XIONG Hui-xin;CHENG Lin;QI Wei-yi(College of Environmental Science&Engineering,Yangzhou University,Yangzhou 225127,China)

机构地区：[1]扬州大学环境科学与工程学院

出　　处：《岩石矿物学杂志》2019年第6期782-788,共7页Acta Petrologica et Mineralogica

基　　金：国家自然科学基金(41472034);江苏省自然科学基金项目(BK20191444);校大学生学术科技创新基金资助项目(x20180477,x20180474)~~

摘　　要：主要研究了磷酸铝(AlPO4)的加入量对氧化亚铁硫杆菌HX3培养液中铁矿物形成的影响,并对相应沉淀产物进行了结构表征分析。结果表明,AlPO4的加入对细菌培养过程中Fe^2+的氧化无明显影响,但可促进Fe^3+的水解和初始铁矿物相的形成,也可加速黄钾铁矾的转化形成。Al/Fe(摩尔比)为0.04~1的培养液中主要形成产物为施威特曼石和黄钾铁矾;Al/Fe为0.4和1时另有磷酸铁矿形成。较高的Al/Fe比值和磷酸根含量有利于磷酸铁矿的形成。In this paper,the authors studied the effect of AlPO4 content on the formation of iron minerals in the cultures of A.ferrooxidans HX3,and characterized and analyzed the structures of the obtained corresponding precipitate products.The results showed that the addition of AlPO4 had little effect on Fe^2+oxidation during bacterial cultivation,but it could promote Fe^3+hydrolysis and formation of the initial iron mineral phase and accelerate transformation of jarosite.Under the higher Al/Fe mole rates of 0.04~1,schwertmannite and jarosite could be formed.Also,iron phosphate could be formed in cultures with Al/Fe mole rates of 0.4 and 1.The higher Al/Fe mole rate and phosphate content are conducive to the formation of iron phosphate.

关 键 词：生物矿化 铁矿物 氧化亚铁硫杆菌 Al/Fe(摩尔比) 表征 

分 类 号：P579[天文地球—矿物学]