羟基铝改性有机膨润土对Cr（VI）吸附效果的研究

Journal of Tianjin Agricultural University ›› 2015, Vol. 22 ›› Issue (3): 18-23.

• Orginal Article • Previous Articles Next Articles

Adsorption of Hexavalent Chromium onto Organic Bentonite Modified by Hydroxy Aluminum

SHE Chong-mei, LIU Hui-fen, HAO Jian-chao*, LU Xian-zhi, SHI Li-jun

College of Agronomy and Resource Environment, Tianjin Agricultural University, Tianjin 300384, China

Received:2015-03-24 Published:2015-09-30

Abstract

Abstract: Hydroxy aluminum was used to modify organic bentonite to increase it’s adsorption of Cr(VI). Some factors, such as dosage of adsorbent, temperature and pH value which influence Cr(VI) removal were examined, and adsorption isotherm, adsorption dynamics, desorption and regeneration of OBA to Cr(VI) were studied. The results show that OBA has higher adsorption capacity than OB. The adsorption capacity of OBA decreases with the increase of temperature, and the optimum temperature is 25 ℃. The pH value has little influence on adsorption of Cr(VI) onto OBA in the acid condition, but the adsorption capacity of OBA decreases with the increase of pH value in the alkaline condition. The adsorption isotherms follow Langmuir equation, and the equation is 1/qe＝0.136 6/Ce＋0.067 (R2＝0.992 9), the maximum adsorption capacity is 14.992 5 mg?g-1. The adsorption dynamics follow the pseudo secondary dynamics equation, and the equation is t/qt＝0.104t+0.106（R2＝0.999）. The adsorption capacity of OBA decreases after desorption and regeneration.

Key words: Cr（VI）; organic bentonite; modification; hydroxy aluminum; adsorption

CLC Number:

SHE Chong-mei, LIU Hui-fen, HAO Jian-chao*, LU Xian-zhi, SHI Li-jun. Adsorption of Hexavalent Chromium onto Organic Bentonite Modified by Hydroxy Aluminum[J]. Journal of Tianjin Agricultural University, 2015, 22(3): 18-23.

Add to citation manager EndNote|Reference Manager|ProCite|BibTeX|RefWorks

URL: http://xuebao.tjau.edu.cn/EN/

http://xuebao.tjau.edu.cn/EN/Y2015/V22/I3/18

References

[1] Akar S T，Yetimoglu Y，Gedikbey T. Removal of chromium (VI) ions from aqueous solutions by using Turkish montmorillonite clay: effect of activation and modification[J]. Desalination，2009，244（3）：97?108.
[2] Asgari A R，Vaezi F，Nasseri S，et al. Removal of hexavalent chromium from drinking water by granular ferric hydroxide[J]. Iranian Journal of Environmental Health Science & Engineering，2008，5（4）：277?282.
[3] 张建斌，郭敏增. 酵母铬对育肥猪生产性能和血液生化指标的影响[J]. 天津农学院学报，2010，17（3）：29?31.
[4] 王家宏，常娥，丁绍兰，等. 吸附法去除水中六价铬的研究进展[J]. 环境科学与技术，2012，35（2）: 67?72.
[5] Namasivayam C，Sureshkumar M V. Removal of chromium(Ⅵ) from water and wastewater using surfactant modified coconut coir pith as a biosorbent[J]. Bioresource Technology，2008，99（7）：2218?2225.
[6] 蔡少华，和文祥，梁艳茹，等. 六价铬污染土壤后形态变化及其对土壤脲酶活性的影响[J]. 农业环境科学学报，2009，28（2）：252?255.
[7] 段雄伟，刘亚玲，黎华寿，等. 高氯酸盐和铬复合污染对土壤酶活性及微生物数量的影响[J]. 农业环境科学学报，2014，33（2）：322?331.
[8] 张黛静，邵云，柴宝玲，等. 小麦植株对重金属铬吸收累积的研究[J]. 农业环境科学学报，2009，28（2）：311?315.
[9] 程民杰，黄亚冬，孙学亮，等. 铜、锌、铬金属离子对黄金鲫的急性毒性研究[J]. 天津农学院学报，2014，21（4）：1?4.
[10] Tewari N，Guha B K，Vasudevan P. Adsorption study of hexavalent chromium by bentonite clay[J]. Asian Journal of Chemistry，2005，17（4）：2184?2190.
[11] Li J，Yue Q Y，Li Q，et al. Adsorption of chromium (VI) from aqueous solution on bentonite modified by cationic polymers[J]. Journal of Environmental Sciences，2009，30（6）：1738?1743.
[12] 吴建军，徐仁扣，肖双成. Fe/Al改性对铬酸根的吸附性能研究[J]. 安全与环境学报，2007，7（2）：15?17.
[13] 范远，陈金思. 三氯化铁改性膨润土对铬（VI）的吸附性能研究[J]. 山东化工，2010，39（8）：8?11.
[14] Shi L N，Lin Y M，Zhang X，et al. Synthesis, characterization and kinetics of bentonite supported nZVI for the removal of Cr（VI） from aqueous solution[J]. Chemical Engineering Journal，2011，171（2）：612?617.
[15] 郭瓦力，张德金，于桂香. 有机膨润土的制备[J]. 辽宁化工，1999，28（3）：157?159.
[16] 于海琴，闫良国，辛晓东，等. CTMAB和PDMDAAC有机改性膨润土的制备及其表征[J]. 光谱学与光谱分析，2011，31（5）：1393?1397.
[17] 曹福，刘瑾. 有机改性膨润土对铬的吸附特性研究[J]. 江苏科技大学学报：自然科学版，2011，25（4）：387?389.
[18] Sarkar B，Xi Y，Megharaj M，et al. Remediation of hexavalent chromium through adsorption by bentonite based Arquad 2HT-75 organoclays[J]. J Hazard Mater，2010，183（1/3）：87?97.
[19] 郝建朝，连宾，刘惠芬，等. 三氯化铁改性有机膨润土包膜材料对六价铬的动态吸附[J]. 农业环境科学学报，2013，32（3）：646?652.
[20] Hao J C，Xiao L L， Liu H F，et al. Adsorption of hexavalent chromium onto organic bentonite moified by the use of iron(Ⅲ) chloride[J]. Water Science and Technology，2014，70（4）：664?670.
[21] Hu B J，Luo H J. Adsorption of hexavalent chromium onto montmorillonite modified with hydroxy aluminum and cetyltrimethylammonium bromide[J]. Applied Surface Science，2010，257（3）：769?775.

Adsorption of Hexavalent Chromium onto Organic Bentonite Modified by Hydroxy Aluminum

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 3

Recommended Articles

Metrics

Comments

[1]	He Jianwu, An Lihui, Qi Hongli. Research progress of microplastics in freshwater environment [J]. Journal of Tianjin Agricultural University, 2021, 28(1): 67-72.
[2]	ZHANG Chun-yang, LI Song-min, NIU Wen-liang, FAN Ya-qi, ZHANG Ze-ping, ZHAO Jia-shuang. Experimental Study on the Interception Effect of Ecological Ditch on Nitrogen and Phosphorus from Farmland [J]. Journal of Tianjin Agricultural University, 2017, 24(2): 72-76.
[3]	ZHENG Zhi-wei, ZHANG Tong-yu, LI Jin-zhong, LI Xue-ju. Study on Phosphorus Balance Features between Mine Tailings Soil,Overlying Water and Sediments of Luanhe River [J]. Journal of Tianjin Agricultural University, 2016, 23(3): 11-14.