不同预处理方式对改性沸石吸附氟离子的影响
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摘要
为除去饮用水中的氟离子,实验采用改性的天然沸石去除模拟饮用水中的氟离子,并研究两种不同预处理方式对改性沸石去除氟离子的影响.采用氯化铵进行预处理,除氟率可达95%;采用氢氧化钠进行预处理,除氟率可达85%.通过进一步氯化铵条件下的动态除氟实验,改性沸石除氟用氯化铵预处理效果较好,适宜在弱酸性条件下进行.
In order to remove the fluoride of drinking water,the modified zeolite was investigated in this paper. The fluoride of simulative drinking water removal effect was studied with two different pretreatments. When NH4 Cl was used in the first pretreatment,the rate of fluoride removal efficiency could reach 95%. The Na OH was used in the second pretreatment,and the rate of fluoride removal efficiency could reach 85%. Dynamic fluoride removal experiment was investigated under the NH4 Cl pretreatment. The results showed that fluoride of simulative drinking water removal efficiency was better and it could reach 95% when NH4 Cl used as modified pretreatment with weakly acidic conditions.
In order to remove the fluoride of drinking water,the modified zeolite was investigated in this paper. The fluoride of simulative drinking water removal effect was studied with two different pretreatments. When NH4 Cl was used in the first pretreatment,the rate of fluoride removal efficiency could reach 95%. The Na OH was used in the second pretreatment,and the rate of fluoride removal efficiency could reach 85%. Dynamic fluoride removal experiment was investigated under the NH4 Cl pretreatment. The results showed that fluoride of simulative drinking water removal efficiency was better and it could reach 95% when NH4 Cl used as modified pretreatment with weakly acidic conditions.
引文
[1]陈红红,黄丽玫,毋福海,等.载镧改性沸石对高氟水除氟效果的研究[J].环境与健康杂志,2010,24(10):868-871.
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[11]杨维,孙浩然,孙炳双,等.沸石改性处理高氟地下水的适宜工艺试验研究[J].2010,37(3):640-644.
[12]卢宁,高乃云,徐斌.饮用水除氟技术研究的新进展[J].四川环境,2007,26(4):119-122.
[13]KAMBLE S P,JAGTAP S,LABHSETWAR N K,et al.Defluoridation of drinking water using chitin,chitosan and lanthanum-modified chitosan[J].Chemical Engineering Journal,2007,129:173-180.
[14]BANSIWAL A,THAKRE D,LABHSHETWAR N,et al.Fluoride removal using lanthanum incorporated chitosan beads[J].Colloids and Surfaces B:Biointerfaces,2009,74:216-224.
[15]李辉,左金龙,王军霞.天然沸石及其改性对污水中磷的吸附[J].哈尔滨商业大学学报:自然科学版,2015,31(3):311-314.
[2]陈平,韩玉洁,王亚筠,等.关于稀土改性的沸石除去水中氟的研究[J].黑龙江商学院学报,1994,10(3):46-51.
[3]路佳,徐芳,蔡伟民.天然沸石在环境治理中应用的研究进展[J].中国非金属矿工业导刊,2004(5):41-43.
[4]赵丹,王曙光,栾兆坤,等.改性斜发沸石吸附水中氨氮的研究[J].环境化学,2003,22(1):59-63.
[5]赵良元,胡波,朱迟.沸石的载铁改性及饮用水除氟试验研究[J].环境科学研究,2008,21(1):168-173.
[6]于凤娥,叶志平,郭杏妹,等.沸石的改性及其在废水处理中的应用[J].广东化工,2007,34(2):48-50.
[7]孙杨,弓爱君,宋永会,等.沸石改性方法研究进展[J].无机盐工业,2008,40(5):1-4.
[8]赵春晖,于衍真,冯岩.沸石的改性与再生及其在水处理中的应用[J].2008,36(2):30-33.
[9]朱娜,曹沁波,梁栋.天然沸石处理高氟地下水的实验研究[J].环境与健康杂志,2007,24(6):399-402.
[10]丁磊,王萍.天然沸石活化方法研究[J].西安工程科技学院学报,2005,19(4):465-466.
[11]杨维,孙浩然,孙炳双,等.沸石改性处理高氟地下水的适宜工艺试验研究[J].2010,37(3):640-644.
[12]卢宁,高乃云,徐斌.饮用水除氟技术研究的新进展[J].四川环境,2007,26(4):119-122.
[13]KAMBLE S P,JAGTAP S,LABHSETWAR N K,et al.Defluoridation of drinking water using chitin,chitosan and lanthanum-modified chitosan[J].Chemical Engineering Journal,2007,129:173-180.
[14]BANSIWAL A,THAKRE D,LABHSHETWAR N,et al.Fluoride removal using lanthanum incorporated chitosan beads[J].Colloids and Surfaces B:Biointerfaces,2009,74:216-224.
[15]李辉,左金龙,王军霞.天然沸石及其改性对污水中磷的吸附[J].哈尔滨商业大学学报:自然科学版,2015,31(3):311-314.