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| Adsorption behaviors towards As and structural change of iron and manganese oxide sludge by thermal treatment |
| ZENG Hui-ping1, ZHAO Yun-xin1, LÜ Yu-feng1, LI Dong1, ZHANG Jie1,2 |
1. Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China;
2. State Key Laboratory of urban Water Resource and environment, Harbin Institute of technology, Harbin 150090, China |
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Abstract Structural change of iron and manganese oxide sludge which were calcined in air at different temperatures, was analyzed by X-ray powder diffraction, transmission electron microcopy, differential thermogravimetry and nitrogen adsorption analysis for specific surface area, respectively. And also the adsorption behaviors towards As was investigated. The results show that the iron and manganese oxide sludge is amorphous structure, with high efficiency of arsenical removal, due to its characteristics of small particle size and big specific surface area. Crystallization water beganto lose at 150℃, and specific surface area and pore volume had a little change, with As (Ⅲ) and As (V) removal rate increased slightly corresponding. Dehydroxylation reaction at 500℃ made the micropores gradually merge into mesopores, leading to the decrease of specific surface area, and further dramatically decrease of As (Ⅲ) and As (V) removal rate by 30% of the original value. As the temperature rising to 800℃, the micropores and mesopores gradually merged into macropores, resulting in the increase of the average pore diameter by 10nm, and the reduce of the specific surface area and pore volume to 12.755m2/g and 0.052cm3/g, meanwhile the sintering phenomenon generated between hematite crystal particles,which made the removal rate of As (Ⅲ) and As (V) plunge to about 10% of the original value.
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Received: 24 January 2017
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| [1] |
Smedley P L, Kinniburgh D G. A review of the source, behaviour and distribution of arsenic in natural waters[J]. Applied Geochemistry. 2002,17(5):517-568.
|
| [2] |
郭华明,倪萍,贾永锋,等.原生高砷地下水的类型、化学特征及成因[J]. 地学前缘, 2014,(4):1-12.
|
| [3] |
云奋,杨咪咪,马彩凤,等.大同市饮水型地方性砷中毒病区环境生态中砷暴露水平调查[J]. 卫生研究, 2015,(1):82-85.
|
| [4] |
高晓慧,董玉良,任丽英,等.复合氧化物对水中砷的去除作用研究进展[J]. 环境科学与技术, 2015,(5):201-206.
|
| [5] |
郜秋平,白羽.去除水中砷的研究现状及进展[J]. 露天采矿技术, 2016,(4):84-86.
|
| [6] |
曾辉平.生物除铁除锰滤池长期运行后除锰能力下降原因的探究[D]. 哈尔滨:哈尔滨工业大学, 2007.
|
| [7] |
杨柳,储昭瑞,任玉辉,等.生物滤池同步去除地下水中Fe2+, Mn2+和As (Ⅲ)的试验研究[J]. 给水排水, 2014,40(3):121-124.
|
| [8] |
Wan T, Zhang G, Gao F, et al. Arsenic accumulation and chemical fraction distribution changes in sludge in a low-sludge wastewater treatment system[J]. Desalination and Water Treatment, 2014,52(16-18):3191-3196.
|
| [9] |
邹雪华,陈天虎,张萍,等.天然针铁矿热处理产物的结构特征[J]. 硅酸盐学报, 2013,(10):1442-1446.
|
| [10] |
邹雪华,陈天虎,刘海波,等.热处理针铁矿的结构与色度演化[J]. 硅酸盐学报, 2013,(5):669-673.
|
| [11] |
赵凯.改性天然菱铁矿除砷性能与应用[D]. 中国地质大学(北京), 2014.
|
| [12] |
孙林,王寅,司友斌.三种铁氧化物对As(Ⅲ)和As(Ⅴ)的吸附研究[J]. 土壤通报, 2016,(1):198-206.
|
| [13] |
王小明,杨凯光,孙世发,等.水铁矿的结构、组成及环境地球化学行为[J]. 地学前缘, 2011,(2):339-347.
|
| [14] |
崔蒙蒙,王殿升,黄天寅,等.人工合成水铁矿对含磷废水的吸附性能[J]. 环境科学, 2016,(9):3498-3507.
|
| [15] |
Seehra M S, Roy P, Raman A, et al. Structural investigations of synthetic ferrihydrite nanoparticles doped with Si[J]. Solid State Communications, 2004,130(9):597-601.
|
| [16] |
Kustova G N, Burgina E B, Sadykov V A, et al. Vibrational spectroscopic investigation of the goethite thermal decomposition products[J]. Physics and Chemistry of Minerals, 1992,18(6):379-382.
|
| [17] |
张杰,李冬,杨宏,等.生物固锰除锰机理与工程技术[M]. 北京:中国建筑工业出版社, 2005:29-34.
|
| [18] |
Naono H, Nakai K, Sueyoshi T, et al. Porous texture in hematite derived from goethite:Mechanism of thermal decomposition of goethite[J]. Journal of Colloid and Interface Science, 1987, 120(2):439-450.
|
| [19] |
Mackenzie R C. Differential thermal analysis[M]. Academic Press, 1970,1-10.
|
| [20] |
任新.净水厂工艺废水中污泥制备吸附剂及对水中Cr~(6+)的吸附特性[D]. 哈尔滨:哈尔滨工业大学, 2014.
|
| [21] |
潘文,吴铿,王文泽,等.褐铁矿的热分解特性及其对烧结过程的影响[J]. 东北大学学报(自然科学版), 2013,(9):1277-1281.
|
| [22] |
Cudennec Y, Lecerf A. Topotactic transformations of goethite and lepidocrocite into hematite and maghemite[J]. Solid State Sciences. 2005,7(5):520-529.
|
|
|
|
