天然沸石对水中氨氮吸附特性的研究
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摘要
以浙江缙云天然沸石为原料,分别用摇床和吸附柱实验研究了天然沸石对氨氮的静态和动态吸附特性。结果显示,在10、25、40℃温度下沸石吸附氨氮有显著差异(P<0.05)。在25℃、氨氮初始浓度为50 mg·L-1的条件下,1~2 mm沸石对氨氮的360 min吸附容量为4.05±0.02 mg·g-1。沸石对氨氮的吸附过程遵循二级吸附动力学方程,沸石对氨氮的等温吸附可用Langmuir和Freundlich等温吸附方程拟合,相关性分析结果表明Langmuir方程达到极显著相关(P<0.01),可以更好地描述沸石吸附氨氮的热力学过程。随着沸石粒径与投加量的减小,沸石对氨氮的吸附量显著增加。在p H值6.0~8.0时,沸石对氨氮去除效果最好。动态试验显示,当氨氮浓度为50 mg·L-1时,沸石的穿透时间约96 h,动态饱和吸附量为18.8 mg·g-1。
Taking Zhejiang Jinyun natural zeolite as raw material, the static and dynamic characteristics of ammonia nitrogen adsorption were studied by shaking table and column experiment, respectively. Results showed that ammonia nitrogen adsorption by zeolite was significant difference(P<0.05)at 10, 25, 40 ℃. At initial ammonia nitrogen concentration of 50 mg·L-1, the adsorption capacity of 1~2 mm zeolite to ammonia nitrogen was 4.05±0.02 mg·g-1at 25 ℃ within 360 min. Adsorption process of ammonia nitrogen on natural zeolite followed two stage adsorption kinetics equation. Isothermal adsorption of ammonia nitrogen by zeolite could be fitted by both the Langmuir and Freundlich isothermal adsorption equation, and the correlation analysis of Langmuir equation was significant correlation(P<0.01), which could better describe the thermodynamic process of the ammonia nitrogen adsorption on zeolite. With reducing particle size and dosage of zeolite, adsorption capacity of zeolite to ammonia nitrogen increased significantly. The optimum adsorption capacity of ammonium was obtained at p H value in the range of 6.0~8.0. Dynamic tests showed when the ammonia nitrogen concentration was 50 mg·L-1, zeolite of breakthrough time was about 96 h, the saturated adsorption capacity was 18.8 mg·g-1.
Taking Zhejiang Jinyun natural zeolite as raw material, the static and dynamic characteristics of ammonia nitrogen adsorption were studied by shaking table and column experiment, respectively. Results showed that ammonia nitrogen adsorption by zeolite was significant difference(P<0.05)at 10, 25, 40 ℃. At initial ammonia nitrogen concentration of 50 mg·L-1, the adsorption capacity of 1~2 mm zeolite to ammonia nitrogen was 4.05±0.02 mg·g-1at 25 ℃ within 360 min. Adsorption process of ammonia nitrogen on natural zeolite followed two stage adsorption kinetics equation. Isothermal adsorption of ammonia nitrogen by zeolite could be fitted by both the Langmuir and Freundlich isothermal adsorption equation, and the correlation analysis of Langmuir equation was significant correlation(P<0.01), which could better describe the thermodynamic process of the ammonia nitrogen adsorption on zeolite. With reducing particle size and dosage of zeolite, adsorption capacity of zeolite to ammonia nitrogen increased significantly. The optimum adsorption capacity of ammonium was obtained at p H value in the range of 6.0~8.0. Dynamic tests showed when the ammonia nitrogen concentration was 50 mg·L-1, zeolite of breakthrough time was about 96 h, the saturated adsorption capacity was 18.8 mg·g-1.
引文
[1]Zorpas A,Constantinides T,Vlyssides A G,et al.Heavy metal uptake by natural zeolite and metals partitioning in sewage sludge compost[J].Bioresource Technology,2000,72(2):113-119.
[2]Ortega E,Cheeseman C,Knight J,et al.Properties of alkal-inactivated clinoptilolite[J].Cement and Concrete Research,2000,30(10):1641-1646.
[3]Lahav O,Green M.Ammonium removal using ion exchange and biological regeneration[J].Water Research,1998,32(7):2019-2028.
[4]Pond W G,Mumpton J A.Zeolite-agriculture[M].Boulder,Colorado:Westview Press,1984:33-54.
[5]Tsitisihvili G V,Ronikashvili T G.Natural zeolites[M].Chichester:England:Ellis Horwood Limited,1992.
[6]Booker N A,Cooney E L,Priestley A J.Ammonia removal from sewage using natural Australian zeolite[J].Water Sci Technol,1996,34(9):17-24.
[7]李晔,王建兵,肖文浚,等.沸石去除水源中低浓度氨氮的实验研究[J].武汉理工大学学报,2003,25(2):4-6.LI Ye,WANG Jian-bing,XIAO Wen-jun,et al.The experimental study of removing low concentration of ammonia nitrogen from the water source by zeolites[J].Journal of Wuhan University of Technology,2003,25(2):4-6.(in Chinese)
[8]王文超,管俊芳,严春杰,等.斜发沸石处理氨氮废水[J].环境工程学报,2014(3):1036-1040.WANG Wen-chao,GUAN Jun-fang,YAN Chun-jie,et al.Adsorption of ammonium-nitrogen in wastewater by clinoptilolite[J].Chinese Journal of Environmental Engineering,2014(3):1036-1040.(in Chinese)
[9]温东辉,唐孝炎,马倩如.天然沸石铵吸附容量的研究[J].环境科学研究,2003,16(2):31-34.WEN Dong-hui,TANG Xiao-yan,MA Qian-ru.Research on the adsorption capacity for ammonium of natural zeolite[J].Research of Environmental Sciences,2003,16(2):31-34.(in Chinese)
[10]张曦,吴为中,温东辉.氨氮在天然沸石上的吸附及解析[J].环境化学,2003,22(2):166-171.ZHANG Xi,WU Wei-zhong,WEN Dong-hui.Adsorption and desorption of ammonia-nitrogen onto natural zeolite[J].Environmental Chemistry,2003,22(2):166-171.(in Chinese)
[11]唐登勇,郑正,林志荣,等.天然沸石吸附低浓度氨氮废水的研究[J].环境科学与技术,2010,33(12):206-209.TANG Deng-yong,ZHENG Zheng,LIN Zhi-rong,et al.Adsorption of ammonium-nitrogen from low concentration wastewater by natural zeolite[J].Environmental Science&Technology,2010,33(12):206-209.(in Chinese)
[12]国家环境保护总局.水和废水监测分析方法(第4版)[M].北京:中国环境科学出版社,2002.State Environmental Protection Administration of China.Analyse method of water and wastewater(4th Edition)[M].Beijing:China Environmental Science Press,2002.(in Chinese)
[13]Budhendra B,Jon H,Bernie E,et al.Assessing watershed-scale,longterm hydrologic impacts of land-use change using a GIS-NPS model[J].Environmental Management,2000(6):643-658.
[14]祝万鹏,杨津湘,杨志华,等.氨氮在饱和水粉砂土和亚砂土层中吸附过程及其模拟[J].环境科学,1996,17(2):9-11.ZHU Wan-peng,YANG Jin-xiang,YANG Zhi-hua,et al.Adsorption behavior of ammonium ion in saturated silty sand and sandy loam[J].Environment Science,1996,17(2):9-11.(in Chinese)
[15]王万军,邵聚红,赵彦巧.天然沸石在环境污染治理中的研究现状和发展趋势[J].资源环境与工程,2007,21(2):187-192.WANG Wan-jun,SHAO Ju-hong,ZHAO Yan-qiao.The application of zeolite to treatment of environmental pollution:its status quo and tendency[J].Resources Environment and Engineering,2007,21(2):187-192.(in Chinese)
[16]Rozic M,Cerjan-Stefanovic S.Ammoniacal nitrogen removal from water by treatment with clays and zeolites[J].Water Research,2000,34(14):3675-3681.
[17]袁时珏,黄远星,李亮,等.沸石吸附水体中氨氮的热力学和动力学过程研究[J].水资源与水工程学报,2013(4):11-14.YUAN Shi-jue,HUANG Yuan-xing,LI Liang,et al.Study on thermodynamic and kinetic of ammonia in water body adsorbed by zeolite[J].Journal of Water Resources&Water Engineering,2013(4):11-14.(in Chinese)
[18]李元志,沈志强,周岳溪,等.天然斜发沸石对氨氮的快速吸附特性研究[J].环境工程技术学报,2014(4):275-281.LI Yuan-zhi,SHEN Zhi-qiang,ZHOU Yue-xi,et al.Study on quick adsorption characteristics of ammonia on natural clinoptilolite[J].Journal of Environmental Engineering Technology,2014(4):275-281.(in Chinese)
[19]Komarowski S,YU Q.Ammonium ion removal from wastewater using Australian natural zeolite:batch equilibrium and kinetic studies[J].Environ Technol,1997,18(11):1085-1097.
[20]Kithome M K,Paul J W,Lavkulich L M,et al.Kinetics of ammonium adsorption and desorption by the natural zeolite clinoptilolite[J].Soil Science Society of America Journal,1998,62(3):622-629.
[21]Azhar A Halima,Hamidi A Azizb,Megat Azmi Megat Joharib,et al.Comparison study of ammonia and COD adsorption on zeolite,activated carbon and composite materials in landfill leachate treatment[J].Desalination,2010,262(2):31-35.
[22]Nguyen M L,Tanner C C.Ammonium removal from wastewaters using natural New Zealand zeolites[J].New Zealand Journal of Agricultural Research,1998,4(3):427-446.
[23]游少鸿,佟小薇,朱义年.天然沸石对氨氮的吸附作用及其影响因素[J].水资源保护,2010,26(1):70-74.YOU Shao-hong,TONG Xiao-wei,ZHU Yi-nian.Experimental study on ammonium adsorption onto natural stellerite and its factors[J].Water Resources Protection,2010,26(1):70-74.(in Chinese)
[24]徐电波.天然斜发沸石对水中氨氮吸附影响因素研究[J].价值工程,2013(17):285-287.XU Dian-bo.Study on influencing factors of natural stellerite adsorbing ammonia and nitrogen[J].Value Engineering,2013(17):285-287.(in Chinese)
[25]刘玉亮,罗固源,阙添进.斜发沸石对氨氮吸附性能的试验分析[J].重庆大学学报,2004,27(1):62-65.LIU Yu-liang,LUO Gu-yuan,QUE Tian-jin.Experimentation study on the adsorption capability about the ammonia nitrogen from water using clinoptilolite[J].Journal of Chongqing University,2004,27(1):62-65.(in Chinese)
[2]Ortega E,Cheeseman C,Knight J,et al.Properties of alkal-inactivated clinoptilolite[J].Cement and Concrete Research,2000,30(10):1641-1646.
[3]Lahav O,Green M.Ammonium removal using ion exchange and biological regeneration[J].Water Research,1998,32(7):2019-2028.
[4]Pond W G,Mumpton J A.Zeolite-agriculture[M].Boulder,Colorado:Westview Press,1984:33-54.
[5]Tsitisihvili G V,Ronikashvili T G.Natural zeolites[M].Chichester:England:Ellis Horwood Limited,1992.
[6]Booker N A,Cooney E L,Priestley A J.Ammonia removal from sewage using natural Australian zeolite[J].Water Sci Technol,1996,34(9):17-24.
[7]李晔,王建兵,肖文浚,等.沸石去除水源中低浓度氨氮的实验研究[J].武汉理工大学学报,2003,25(2):4-6.LI Ye,WANG Jian-bing,XIAO Wen-jun,et al.The experimental study of removing low concentration of ammonia nitrogen from the water source by zeolites[J].Journal of Wuhan University of Technology,2003,25(2):4-6.(in Chinese)
[8]王文超,管俊芳,严春杰,等.斜发沸石处理氨氮废水[J].环境工程学报,2014(3):1036-1040.WANG Wen-chao,GUAN Jun-fang,YAN Chun-jie,et al.Adsorption of ammonium-nitrogen in wastewater by clinoptilolite[J].Chinese Journal of Environmental Engineering,2014(3):1036-1040.(in Chinese)
[9]温东辉,唐孝炎,马倩如.天然沸石铵吸附容量的研究[J].环境科学研究,2003,16(2):31-34.WEN Dong-hui,TANG Xiao-yan,MA Qian-ru.Research on the adsorption capacity for ammonium of natural zeolite[J].Research of Environmental Sciences,2003,16(2):31-34.(in Chinese)
[10]张曦,吴为中,温东辉.氨氮在天然沸石上的吸附及解析[J].环境化学,2003,22(2):166-171.ZHANG Xi,WU Wei-zhong,WEN Dong-hui.Adsorption and desorption of ammonia-nitrogen onto natural zeolite[J].Environmental Chemistry,2003,22(2):166-171.(in Chinese)
[11]唐登勇,郑正,林志荣,等.天然沸石吸附低浓度氨氮废水的研究[J].环境科学与技术,2010,33(12):206-209.TANG Deng-yong,ZHENG Zheng,LIN Zhi-rong,et al.Adsorption of ammonium-nitrogen from low concentration wastewater by natural zeolite[J].Environmental Science&Technology,2010,33(12):206-209.(in Chinese)
[12]国家环境保护总局.水和废水监测分析方法(第4版)[M].北京:中国环境科学出版社,2002.State Environmental Protection Administration of China.Analyse method of water and wastewater(4th Edition)[M].Beijing:China Environmental Science Press,2002.(in Chinese)
[13]Budhendra B,Jon H,Bernie E,et al.Assessing watershed-scale,longterm hydrologic impacts of land-use change using a GIS-NPS model[J].Environmental Management,2000(6):643-658.
[14]祝万鹏,杨津湘,杨志华,等.氨氮在饱和水粉砂土和亚砂土层中吸附过程及其模拟[J].环境科学,1996,17(2):9-11.ZHU Wan-peng,YANG Jin-xiang,YANG Zhi-hua,et al.Adsorption behavior of ammonium ion in saturated silty sand and sandy loam[J].Environment Science,1996,17(2):9-11.(in Chinese)
[15]王万军,邵聚红,赵彦巧.天然沸石在环境污染治理中的研究现状和发展趋势[J].资源环境与工程,2007,21(2):187-192.WANG Wan-jun,SHAO Ju-hong,ZHAO Yan-qiao.The application of zeolite to treatment of environmental pollution:its status quo and tendency[J].Resources Environment and Engineering,2007,21(2):187-192.(in Chinese)
[16]Rozic M,Cerjan-Stefanovic S.Ammoniacal nitrogen removal from water by treatment with clays and zeolites[J].Water Research,2000,34(14):3675-3681.
[17]袁时珏,黄远星,李亮,等.沸石吸附水体中氨氮的热力学和动力学过程研究[J].水资源与水工程学报,2013(4):11-14.YUAN Shi-jue,HUANG Yuan-xing,LI Liang,et al.Study on thermodynamic and kinetic of ammonia in water body adsorbed by zeolite[J].Journal of Water Resources&Water Engineering,2013(4):11-14.(in Chinese)
[18]李元志,沈志强,周岳溪,等.天然斜发沸石对氨氮的快速吸附特性研究[J].环境工程技术学报,2014(4):275-281.LI Yuan-zhi,SHEN Zhi-qiang,ZHOU Yue-xi,et al.Study on quick adsorption characteristics of ammonia on natural clinoptilolite[J].Journal of Environmental Engineering Technology,2014(4):275-281.(in Chinese)
[19]Komarowski S,YU Q.Ammonium ion removal from wastewater using Australian natural zeolite:batch equilibrium and kinetic studies[J].Environ Technol,1997,18(11):1085-1097.
[20]Kithome M K,Paul J W,Lavkulich L M,et al.Kinetics of ammonium adsorption and desorption by the natural zeolite clinoptilolite[J].Soil Science Society of America Journal,1998,62(3):622-629.
[21]Azhar A Halima,Hamidi A Azizb,Megat Azmi Megat Joharib,et al.Comparison study of ammonia and COD adsorption on zeolite,activated carbon and composite materials in landfill leachate treatment[J].Desalination,2010,262(2):31-35.
[22]Nguyen M L,Tanner C C.Ammonium removal from wastewaters using natural New Zealand zeolites[J].New Zealand Journal of Agricultural Research,1998,4(3):427-446.
[23]游少鸿,佟小薇,朱义年.天然沸石对氨氮的吸附作用及其影响因素[J].水资源保护,2010,26(1):70-74.YOU Shao-hong,TONG Xiao-wei,ZHU Yi-nian.Experimental study on ammonium adsorption onto natural stellerite and its factors[J].Water Resources Protection,2010,26(1):70-74.(in Chinese)
[24]徐电波.天然斜发沸石对水中氨氮吸附影响因素研究[J].价值工程,2013(17):285-287.XU Dian-bo.Study on influencing factors of natural stellerite adsorbing ammonia and nitrogen[J].Value Engineering,2013(17):285-287.(in Chinese)
[25]刘玉亮,罗固源,阙添进.斜发沸石对氨氮吸附性能的试验分析[J].重庆大学学报,2004,27(1):62-65.LIU Yu-liang,LUO Gu-yuan,QUE Tian-jin.Experimentation study on the adsorption capability about the ammonia nitrogen from water using clinoptilolite[J].Journal of Chongqing University,2004,27(1):62-65.(in Chinese)