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《Mineral Resources and Geology》 2010-01
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A prelim inary study of the NH_4-N in water removal effect of modified stellerite

XIAO Xiao-yu1,2,3, ZHANG Jing1,2,3, Xu Wen-xin1,2,3, Li Hen1,2,3(1.Guilin Research Institute of Geology for Mineral Resources,Guilin Guangxi 541004,China;2.Guangxi Environmental Control Engineering Research Center,Guilin Guangxi 541004,China;3. Environmental Engineering and Protection Evaluation Key Laboratory, Guilin Guangxi 541004,China)  
The NH4-N in water removal effect of stellerite modified by acid,alkali and salt is studied in the article.We studied the NH4-N in water removal effect of stellerite activatied at different temperature also.The experimental results show four conclusions.(1)The best experimental condition:①Agitate time is 30min.②Stellerite granular size is 250~420 um.③The amount of stellerite is 2g. ④The concentration of NH4-Cl solution is 40mg/L;⑤The amount of NH4-Cl solution is 80ml.(2) The NH4-N removal effect of stellerite was enhanced few activatied at different temperature.(3) The NH4-N removal effect of modified by acid or alkali is higher than stellerite. The NH4-N removal effect of stellerite modified by HCl is 16.2%.And it is 13.1% modified by H2SO4. It is 25.6% modified by alkali. (4)It has large influence on the NH4-N removal effect of stellerite modified by salt. The NH4-N removal effect of stellerite become 72.6% from 9.6% after modified by salt.
【Fund】: 广西科学与技术开发计划项目资助(桂科攻0235006-6);; 环境工程与保护评价重点实验室主任基金项目资助(桂科能0703ZD25)
【CateGory Index】: TU991.2
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