热处理富钙海泡石对水体中砷的吸附特征

doi:10.11934/j.issn.1673-4831.2017.09.008

Abstract

Abstract:

Calcium-rich sepiolite was taken as an object for study, in which it was modified by heating, and then analyzed for changes in composition and structure from the original with XRF, XRD, and SEM-EDS, separately. Moreover, effects of the modification on its adsorption of As³⁺ and As⁵⁺ and their influencing factors were studied. Results show that the modification significantly increased sepiolite's As adsorption capacity. Its As³⁺ and As⁵⁺ adsorption capacity in water with pH being 7 in value reached theoretically as high as 25.61 mg·g^-1 and 30.30 mg·g^-1, respectively, with adsorption isotherms fitting the Langmuir model. Fitting of its As adsorption kinetics reveals that its As³⁺ adsorption was in consistence with the pseudo-second order model, while its As⁵⁺ adsorption was with both the pseudo-first and -second order kinetics models. Besides, the study of influencing factors found that changes in particle size was not a major factor affecting As adsorption of the modified calcium-rich sepiolite and neither was pH (6-11). Among the co-existing ions, PO₄^3- was found to be the major one. The low-cost thermal treated calcium rich sepiolite was proven to be an effective arsenic remover in the wastewater.

Key words: calcium-rich sepiolite, heat treatment, arsenic, arsenate

CLC Number:

YAN Xiao-wei, YIN Hong-bin, TANG Wan-ying. Arsenic Adsorption Behaviors of Heated Calcium-Rich Sepiolite in Water.[J]. Journal of Ecology and Rural Environment, 2017, 33(9): 822-829.

References

[1] LI W G,GONG X J,WANG K,et al.Adsorption Characteristics of Arsenic From Micro-Polluted Water by an Innovative Coal-Based Mesoporous Activated Carbon[J].Bioresource Technology,2014,165:166-173.
[2] CHAMMUI Y,SOOKSAMITI P,NAKSATA W,et al.Removal of Arsenic From Aqueous Solution by Adsorption on Leonardite[J].Chemical Engineering Journal,2014,240:202-210.
[3] XIA Y J,LIU J.An Overview on Chronic Arsenism via Drinking Water in China[J].Toxicology,2004,198(1/2/3):25-29.
[4] SUN G F.Arsenic Contamination and Arsenicosis in China[J].Toxicology and Applied Pharmacology,2004,198(3):268-271.
[5] BHATTACHARYA P.Arsenic in Hydrological Processes:Sources,Speciation,Bioavailability and Management[J].Journal of Hydrology,2014,518(Part C):279-283.
[6] YOUN Y K,SIM H S,KIM J Y,et al.Epidemiology and Control of an Outbreak of Vancomycin-Resistant Enterococci in the Intensive Care Units[J].Yonsei Medical Journal,2009,50(5):637-643.
[7] 梁美娜.铁、铝及其复合氢氧化物去除水中砷(Ⅴ)的吸附研究[D].桂林:桂林工学院,2006.
[8] 于志红,黄一帆,廉菲,等.生物炭-锰氧化物复合材料吸附砷(Ⅲ)的性能研究[J].农业环境科学学报,2015,34(1):155-161.
[9] BISWAS B K,INOUE J I,INOUE K,et al.Adsorptive Removal of As(Ⅴ) and As(Ⅲ) From Water by a Zr(Ⅳ)-Loaded Orange Waste Gel[J].Journal of Hazardous Materials,2008,154(1/2/3):1066-1074.
[10] 姚乐.改性膨润土吸附处理含砷废水实验研究[J].科学技术与工程,2010,10(16):4093-4095,4104.
[11] 符浩,魏钟波,王翠兰,等.偶联剂改性凹凸棒土处理含汞(Ⅱ)废水的研究[J].环境工程学报,2011,5(5):1106-1110.
[12] XU Y H,NAKAJIMA T,OHKI A.Adsorption and Removal of Arsenic(Ⅴ) From Drinking Water by Aluminum-Loaded Shirasu-Zeolite[J].Journal of Hazardous Materials,2002,92(3):275-287.
[13] ÖZDEMIR O,ÇLNAR M,SABAH E,et al.Adsorption of Anionic Surfactants Onto Sepiolite[J].Journal of Hazardous Materials,2007,147(1/2):625-632.
[14] 孙约兵,徐应明,史新,等.海泡石对镉污染红壤的钝化修复效应研究[J].环境科学学报,2012,32(6):1465-1472.
[15] YIN H B,YE Y,ZHANG Y L,et al.Phosphate Removal From Wastewaters by a Naturally Occurring,Calcium-Rich Sepiolite[J].Journal of Hazardous Materials,2011,198:362-369.
[16] WANG J,WANG W,LI R Q,et al.The Diploid Genome Sequence of an Asian Individual[J].Nature,2008,456(7218):60-65.
[17] 孔明,尹洪斌,吴雨琛,等.热处理对天然富钙粘土矿物除磷能力的影响[J].环境科学学报,2013,33(12):3211-3218.
[18] ZHANG G S,REN Z M,ZHANG X W,et al.Nanostructured Iron(Ⅲ)-Copper(Ⅱ) Binary Oxide:A Novel Adsorbent for Enhanced Arsenic Removal From Aqueous Solutions[J].Water Research,2013,47(12):4022-4031.

Arsenic Adsorption Behaviors of Heated Calcium-Rich Sepiolite in Water.

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 13

Recommended Articles

Metrics

Comments

[1]	KONG Chang, YANG Lin-sheng, YU Jiang-ping, WEI Bing-gan, LI Hai-rong, CUI Na, GUO Zhi-wei. Assessment of Arsenic Exposure and Carcinogenic Risk in an Endemic Arsenism Area in Inner Mongolia Caused by Exposure to Arsenic in Drinking Water [J]. Journal of Ecology and Rural Environment, 2018, 34(5): 456-462.
[2]	DENG Tian-tian, HU Ye, LIU Shuai-xia, LI Han-sheng, HOU Yu-meng. Adsorption Characteristics of Fe₂O₃@GO Polymer to As³⁺ in Water [J]. Journal of Ecology and Rural Environment, 2018, 34(10): 930-938.
[3]	DENG Tian-tian, MA Pei, LI Han-sheng. As(Ⅲ) Adsorption Effects of Montmorillonite, Iron Oxides and Their Complex [J]. Journal of Ecology and Rural Environment, 2017, 33(3): 252-259.
[4]	DU Li-juan, MI Yan-hua, CHEN Lu, YIN Ben-lin, MA Jie, HE Li-zhong, YE Yan-ping. Absorption, Translocation and Transformation of Arsenic in Medicinal Herb Panax notoginseng-Soil System [J]. Journal of Ecology and Rural Environment, 2016, 32(6): 997-1002.
[5]	JIANG Duo-duo,SUN Lu,BU Yuan-qing,ZHANG Mei-hua,JIANG Ji-hong,GAO Ji-xi. Isolation,Identification and Effect of Three Arsenic-Resistant Strains on Bioavailable Arsenic in Soil. [J]. Journal of Ecology and Rural Environment, 2015, 31(5): 774-778.
[6]	DENG Tian-Tian, LI Yi-Lian, CHEN Yin-Song, YANG Guo-Dong. Technology for Treating High Arsenic Drinking Water in Shanyin [J]. Journal of Ecology and Rural Environment, 2011, 27(1): 69-74.
[7]	XIAO Yan-Ping, SHAO Yu-Fang, SHEN Sheng-Yuan, YIN Rui, LIN Xian-Gui, ZHANG Jing, BAI Jian-Feng, CHEN Yu-Cheng. Effect of Arbuscular Mycorrhizal Fungi and Earthworms on Phytoremediation of As-Contaminated Soils Using Maize [J]. Journal of Ecology and Rural Environment, 2010, 26(3): 235-240.
[8]	BO Ying, LUO Li-Qiang. Geochemical Characteristics of Arsenic in Waterbodies in Hetao Plain, Inner Mongolia [J]. Journal of Ecology and Rural Environment, 2010, 26(1): 31-34.
[9]	HUA Jian-Feng, LIN Xian-Gui, YIN Rui, JIANG Qian. Effects of Arsenic Contamination on Structure of Soil Nematode Community in Mining Area [J]. Journal of Ecology and Rural Environment, 2009, 25(1): 79-84.
[10]	HE Cheng-Shun, FAN Hui, ZHOU Qing. Residue of Arsenical Fungicide in Apple Trees [J]. Journal of Ecology and Rural Environment, 1996, 12(1): 58-61.
[11]	MA Liang, ZHANG Yu-Min, ZHANG Ge-You, FAN Cheng-Wan, DAI Qin, LI Hao, LUO Zhen-Dong. Study on epidemic factors for chronic arsenic poisoning insome areas of Hubehaote Basin [J]. Journal of Ecology and Rural Environment, 1994, 10(1): 17-19.
[12]	ZHANG Yu-Min, MA Liang, LUO Zhen-Dong, ZHANG Ge-You, FAN Cheng-Wan, NA Ren-Gao-Wa. Water quality analysis of arsenic enriched groundwater inIarge area of Western Huhehaote Basin [J]. Journal of Ecology and Rural Environment, 1994, 10(1): 59-61.
[13]	XIA Jia-Qi. Studies on the Soil-environmental Criteria for Arsenic [J]. Journal of Ecology and Rural Environment, 1993, 9(4): 1-4,62.