热处理对天然富钙粘土矿物除磷能力的影响
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摘要
本文以天然富钙粘土矿物(海泡石和凹凸棒)为研究对象,采用热处理的方法对其进行活化,并利用X-射线衍射(XRD)分析了矿物结构的变化,同时研究了热处理粘土矿物的除磷能力和机制。研究结果表明,热处理能够显著改变海泡石和凹凸棒的矿物组成,大幅提高其对磷的吸附能力,并分别在900℃和800℃的活化条件下对磷的吸附能力达到最佳,吸附量分别可达37.7 mg·g-1和30.9mg·g-1;Freundlich方程和准二级方程能较好地拟合热处理粘土对磷的吸附热力学和动力学过程;同时还发现p H值(3~10)对热处理粘土除磷能力基本无影响;热处理富钙粘土的除磷机制主要是与溶液中的磷生成钙磷沉淀。
引文
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[26]徐应明,梁学峰,孙国红,等.2009.海泡石表面化学特性及其对重金属Pb2+Cd2+Cu2+吸附机理研究[J].农业环境科学学报,28(10):2057-2063
[27]Xu Y M,Liang X F,Sun G H,et al.2009.Surface chemical characteristics of sepiolites and their adsorption mechanisms of Pb2+,Cd2+and Ca2+[J].Journal of Agro-Environment Science,28(10):2057-2063(in Chinese)
[28]Ye H P,Chen F Z,Sheng Y Q,et al.2006.Adsorption of phosphate from aqueous solution onto modified palygorskites[J].Separation and Purification Technology,50:283-290
[29]Yin H B,Yun Y,Zhang Y L,et al.2011.Phosphate removal from wastewaters by a naturally occurring,calcium-rich sepiolite[J].Journal of Hazardous Materials,198:362-369
[30]袁东海,张孟群,高士祥,等.2005.几种粘土矿物和粘粒土壤吸附净化磷素的性能和机理[J].环境化学,24(1):7-11
[31]Yuan D H,Zhang M Q,Gao S X,et al.2005.The abilities and mechanisms of adsorption phosphorus in some clay minerals and soils[J].Environmental Chemistry,24(1):7-11(in Chinese)
[2]Dong Q J,Shao S X,Li N X,et al.2006.Study on the treatment of water containing phosphates with attapulgite compound adsorbents[J].Bulletin of the Chinese Ceramic Society,(2):19-22(in Chinese)
[3]Freeman J S,Rowell D L.1981.The adsorption and precipitation of phosphate onto calcite[J].Journal of Soil Science,32:75-84
[4]Gan F Q,Zhou J M,Wang H Y,et al.2009.Removal of phosphate from aqueous solution by thermally treated natural palygorskite[J].Water Research,43:2907-2915
[5]龚云峰,孙素敏,钱玉山.2009.污水化学除磷处理技术[J].能源环境保护,23(3):1-4,13
[6]Gong Y F,Sun S M,Qian Y S.2009.Technology on wastewater chemical phosphorus removal[J].Energy Environment Protection,23(3):1-4,13(in Chinese)
[7]顾益初,蒋柏藩.1990.石灰性土壤无机磷分级的测定方法[J].土壤,22:101-102
[8]Gu Y C,Jiang B F.1990.A method for fractionation of inorganic phosphorus of calcareous soils.Soils,22:101-102(in Chinese)
[9]贾晓燕.2003.废水除磷技术研究进展[J].重庆环境科学,25(12):191-192
[10]Jia X Y.2003.Advance in technology of phosphorus for wasterwater[J].Chongqing Environmental Science,25(12):191-192(in Chinese)
[11]Kaasik A,Vohla C,Motlp R,et al.2008.Hydrated calcareous oil shale ash as potential filter media for phosphorus removal in constructed wetlands[J].Water Research,42:1315-1323
[12]Li M,Houston Y L,Zhu B.2007.Phosphorus sorption-desorption by purple soils of China in relation to their properties[J].Australian Journal of Soil Research,45:182-189
[13]Liu R X,Guo J L,Tang H X.2002.Adsorption of fluoride,phosphate and arsenate ions on a new type of ion exchange fiber[J].Journal of Colloid Interface Science,2489:268-274
[14]吕婧,封莉,张立秋.2012.不同活性炭对水中微量药物萘普生的吸附规律研究[J].环境科学学报,32(10):2443-2449
[15]LüJ,Feng L,Zhang L Q.2012.Adsorption of trace naproxen in waterby different activated carbons[J].Acta Scientiae Circumstantiae,32(10):2443-2449(in Chinese)
[16]陆泗进,谭文峰,刘凡,等.2006.一种改进的盐滴定法测定氧化锰矿物的电荷零点[J].土壤学报,43(5):756-762
[17]Lu S J,Tan W F,Liu F,et al.2006.Point of charge(PZC)of manganese oxides determined with an improved sale titration method[J].Acta Pedologica Sinica,43(5):756-762(in Chinese)
[18]Nemeth Z,Gancs G,Gemes G,et al.1998.p H dependence of phosphate sorption on aluminum[J].Corrosion Science,40(2):2023-2027
[19]Panswad T,Doungchai A,Anotai J.2003.Temperature effect on microbial community of enhanced biological phosphorus removal system[J].Water research,37(2):409-415
[20]Takeshi K,Yujiro W,Hirohisa Y,et al.2004.Sorption of phosphates on Al-pillared smectites and mica at acidic to neutral p H[J].Applied clay science,25:167-177
[21]Vohla C,K?iv M,Bavor H J,et al.2011.Filter materials for phosphorus removal from wasterwater in treatment wetlands-A review[J].Ecological Engineering,37:70-89
[22]Wei X C,Viadero J R C,Bhojappa S.2008.Phosphorus removal by acid mine drainage sludge from secondary effluents of municipal wastewater treatment plants[J].Water Research,42:3275-3284
[23]吴传庆,盖嘉翔,王桥,等.2011.湖泊富营养化遥感评价模型的建立方法[J].中国环境监测,27(5):77-82
[24]Wu C Q,Gai J X,Wang J,et al.2011.Comparison testing study of exhaust pollutants under remote sensing conditions and high-speed idle conditions[J].Environmental Monitoring in China,27(5):77-82(in Chinese)
[25]Xiong J B,Qin Y,Islam E,et al.2011.Phosphate remocal from solution using powdered freshwater mussel shells[J].Desalination,276:317-321
[26]徐应明,梁学峰,孙国红,等.2009.海泡石表面化学特性及其对重金属Pb2+Cd2+Cu2+吸附机理研究[J].农业环境科学学报,28(10):2057-2063
[27]Xu Y M,Liang X F,Sun G H,et al.2009.Surface chemical characteristics of sepiolites and their adsorption mechanisms of Pb2+,Cd2+and Ca2+[J].Journal of Agro-Environment Science,28(10):2057-2063(in Chinese)
[28]Ye H P,Chen F Z,Sheng Y Q,et al.2006.Adsorption of phosphate from aqueous solution onto modified palygorskites[J].Separation and Purification Technology,50:283-290
[29]Yin H B,Yun Y,Zhang Y L,et al.2011.Phosphate removal from wastewaters by a naturally occurring,calcium-rich sepiolite[J].Journal of Hazardous Materials,198:362-369
[30]袁东海,张孟群,高士祥,等.2005.几种粘土矿物和粘粒土壤吸附净化磷素的性能和机理[J].环境化学,24(1):7-11
[31]Yuan D H,Zhang M Q,Gao S X,et al.2005.The abilities and mechanisms of adsorption phosphorus in some clay minerals and soils[J].Environmental Chemistry,24(1):7-11(in Chinese)
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