| 铁改性杭锦土对磷的吸附及对沉积物磷释放的控制 |
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| 引用本文： | 陈其晓,康得军,龚天成,赵颖,杨天学. 铁改性杭锦土对磷的吸附及对沉积物磷释放的控制[J]. 水处理技术, 2021, 47(2): 48-53 |
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| 作者姓名： | 陈其晓 康得军 龚天成 赵颖 杨天学 |
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| 作者单位： | 中国环境科学研究院,国家环境保护地下水污染过程模拟与控制重点实验室,北京100012;福州大学土木工程学院,福建福州 350108;福州大学土木工程学院,福建福州350108;福州大学晋江科教园,福建晋江 362251;中国环境科学研究院,国家环境保护地下水污染过程模拟与控制重点实验室,北京100012 |
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| 基金项目： | 中央级公益性科研院所基本科研业务专项(2019YSKY-010);水体污染控制与治理科技重大专项(2018ZX07109-001)。 |
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| 摘 要： | 以天然粘土矿物杭锦土(HJ)为原料,采用浸渍法制备表面负载铁氧化物的铁改性杭锦土(FHJ)吸附剂.采用BET、SEM、XRD等技术对其进行表征,并考察了铁负载比例、pH、共存离子对FHJ除磷的影响.结果表明,浸渍法成功将铁氧化物负载在杭锦土表面;溶液pH越低越有利于FHJ对磷酸盐的吸附;除磷性能受CO32-、SiO32...
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| 关 键 词： | 杭锦土 吸附 除磷 沉积物 覆盖材料 |
Adsorption of Phosphorus and Control of Phosphorus Release from Sediments by Iron-modified Hangjin Clay |
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| CHEN Qixiao,KANG Dejun,GONG Tiancheng,ZHAO Ying,YANG Tianxue. Adsorption of Phosphorus and Control of Phosphorus Release from Sediments by Iron-modified Hangjin Clay[J]. Technology of Water Treatment, 2021, 47(2): 48-53 |
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| Authors: | CHEN Qixiao KANG Dejun GONG Tiancheng ZHAO Ying YANG Tianxue |
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| Affiliation: | (State Environment Protection Key Laboratory of Simulation and Control of Groundwater Pollution,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;College of Civil Engineering,Fuzhou University,Fuzhou 350108,China;Jinjiang Science and Education Park of Fuzhou University,Jinjiang 362251,China) |
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| Abstract: | The iron-modified Hangjin clay(FHJ)adsorbent with surface-supporting iron oxide was prepared by impregnation method using natural clay mineral Hangjin clay(HJ)as raw material.It was characterized by BET,SEM and XRD techniques,and the effects of iron loading ratio,pH and coexisting ions on phosphorus removal by FHJ were investigated.The results showed that,the impregnation method successfully loaded iron oxide on the surface of Hangjin clay;lower solution pH was more advantageous to the adsorption of phosphate by FHJ;the phosphorus removal performance was greatly affected by CO32-and SiO32-;the adsorption isotherm could be described by the Langmuir isotherm adsorption model.The phosphorus removal processes followed the pseudo-second-order kinetic equation.Through simulation experiments,the surface of the sediment covered FHJ,the release of sediment TP,DTP and SRP was significantly reduced,it showed that FHJ could effectively control the release of phosphorus from sediments. |
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| Keywords: | Hangjin clay adsorption phosphorus removal sediment covering material |
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