化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (9) : 195-198.

科学研究

钡改性污泥陶粒对废水中Cr(Ⅵ)的吸附性能研究

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Adsorption property of Cr(Ⅵ) in wastewater by Ba-SC

Zhang Yanping¹, Cheng Hengwei², Lu Guangping¹, Zhang Yue¹

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文章历史 +

Received
2018-04-17
Issue Date	Revised Date
2019-10-10	2018-04-17

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摘要

以污水厂污泥、粉煤灰为主要原料制备污泥陶粒,并采用BaCl₂浸泡、焙烧的方法对其进行改性,制得钡改性污泥陶粒(Ba-SC),考察了其对水中Cr(Ⅵ)的吸附性能、动力学及吸附等温线,并采用扫描电子显微镜(SEM)对其进行了表征。结果表明:Ba-SC对Cr(Ⅵ)的去除效果远高于SC,且吸附效果受pH影响较大,在pH≥7时对Cr(Ⅵ)的去除率可达90%以上。SEM结果显示,负载在污泥陶粒表面的Ba可吸附Cr(Ⅵ)并与之反应形成正交晶型的结晶体。Ba-SC对Cr(Ⅵ)的吸附过程符合准二级动力学模型及Langmuir等温吸附模型,吸附反应为单分子层化学吸附过程。

Abstract

The sludge ceramsite was prepared by sewage sludge and fly ash,then modified by BaCl₂,and the barium modified sludge ceramsite (Ba-SC) was obtained.The removal performance of Cr(Ⅵ),dynamics and adsorption isotherm treated by Ba-SC were investigated,and the surface morphology was characterized by SEM.The results showed that the Ba-SC had better removal effect of Cr(Ⅵ) than SC,and the adsorption effect was greatly influenced by pH value.The Cr(Ⅵ) removal rate could over 90% at pH≥7.The SEM results indicated that the barium,which loaded on the sludge ceramsite surface,could adsorb Cr(Ⅵ) and reacted with it to form orthogonal crystals.The fitting curves showed that the adsorption process of Cr(Ⅵ) by Ba-SC were well described by pseudo-second order model and langmuir isothermal adsorption model,and the process was monomolecular chemical adsorption.

关键词

钡改性 / 污泥陶粒 / Cr(Ⅵ) / 吸附

Key words

barium modification / sludge ceramsite / Cr(Ⅵ) / adsorption

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钡改性污泥陶粒对废水中Cr(Ⅵ)的吸附性能研究[J]. 化工新型材料, 2019, 47(9): 195-198 DOI:

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参考文献

原文顺序 | 出版日期 | 本文引用

[1] 王晓光.改性活性炭高效去除废水中Cr(Ⅵ)的研究[D].济南:山东大学,硕士学位论文,2016:2.
[2] 张双杰,杏宝林,黄光许,等.核桃壳水热炭对六价铬的吸附特性[J].化工进展,2016,35(3):950-956.
[3] Julie A Korak,Richard Huggins,Miguel Arias-Paic.Regeneration of pilot-scale ion exchange columns for hexavalent chromium removal[J].Water Research,2017,118:141-151.
[4] Zhao Y H,Masanori Kunieda,Nobuaki Obi,et al.Development of electrolyte filtration system for ECM taking into account removal of chromium(Ⅵ) ions[J].Precision Engineering,2017,49:211-219.
[5] Samson O Owalude,Adedibu C Tella.Removal of hexavalent chromium from aqueous solutions by adsorption on modified groundnut hull[J].Beni-Suef University Journal of Basic and Applied Sciences,2016,5(4):377-388.
[6] Han A J,Zhang Hong W,Sun J L,et al.Investigation into bulk liquid membranes for removal of chromium(Ⅵ) from simulated wastewater[J].Journal of Water Process Engineering,2017,17:63-69.
[7] 黄玉梅.改性沸石制备及其对铬吸附特性的研究[J].硅酸盐通报,2017,36(1):206-209.
[8] Cao Y H,Huang JN,Peng X F,et al.Poly(vinylidene fluoride) derived fluorine-doped magnetic carbon nanoadsorbents for enhanced chromium removal[J].Carbon,2017,115:503-514.
[9] Li S H,Liu L,Yu Y F,et al.Fe₃O₄ modified mesoporous carbon nanospheres:magnetically separable adsorbent for hexavalent chromium[J].Journal of Alloys and Compounds,2017,698:20-26.
[10] Rangabhashiyam S,Selvaraju N.Adsorptive remediation of hexavalent chromium from synthetic wastewater by a natural and ZnCl₂ activated Sterculia guttata shell[J].Journal of Molecular Liquids,2015,207:39-49.
[11] 王谦,李延长,孙平,等.含铬废水处理技术及研究进展[J].环境科学与技术,2013,36(12M):150-156.
[12] 国家环境保护总局.水和废水监测分析方法编委会[M].水和废水检测分析方法(第四版).北京:中国环境科学出版社,2012:346-349.
[13] 陈佼,张建强,陆一新,等。改性猪粪生物炭对水中Cr(Ⅵ)的吸附性能[J].水处理技术,2017,43(4):31-35.
[14] 李瑞玲,张爱江,宋标.改性指甲花对Cr(Ⅵ)的吸附研究[J].化工新型材料,2017,45(6):242-243,246.
[15] 谢妤,宋卫军.薏米壳生物炭的制备及其对Cr(Ⅵ)的吸附性能[J].2017,37(5):525-532.
[16] 近藤精一,石川达雄,安部郁夫.吸附科学[M].北京:化学工业出版社,2006:32-53.
[17] 周林,陈云琳,等.混碱改性粉煤灰制备NaP1型沸石[J].硅酸盐学报,2013,32(5):819-822.