[1]徐 朦,刘 畅,周美成,等.粉末状凹凸棒土轻质滤料吸附水中铅离子研究[J].常州大学学报(自然科学版),2019,31(03):80-87.[doi:10.3969/j.issn.2095-0411.2019.03.009]
　XU Meng,LIU Chang,ZHOU Meicheng,et al.Adsorption of Lead Ions in Water by Attapulgite Light Filter Media[J].Journal of Changzhou University(Natural Science Edition),2019,31(03):80-87.[doi:10.3969/j.issn.2095-0411.2019.03.009]
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粉末状凹凸棒土轻质滤料吸附水中铅离子研究()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第31卷
期数:
2019年03期
页码:
80-87
栏目:
环境科学与工程
出版日期:
2019-05-28

文章信息/Info

Title:
Adsorption of Lead Ions in Water by Attapulgite Light Filter Media
文章编号:
2095-0411(2019)03-0080-08
作者:
徐 朦1; 2; 刘 畅1; 周美成2; 傅成义2; 董良飞1
(1.常州大学 环境与安全工程学院,江苏 常州 213164; 2.江苏冰洲石环保科技有限公司,江苏 南京 210019)
Author(s):
XU Meng1; 2;  LIU Chang1;  ZHOU Meicheng2;  FU Chengyi2;  DONG Liangfei1
(1.School of Environmental & Safety Engineering,Changzhou University,Changzhou 213164,China; 2.Jiangsu IceIsland Environmental Protection Technology Co.,Ltd.,Nanjing 210019,China)
关键词:
凹凸棒土轻质滤料;  铅离子;  吸附等温线;  动力学方程;  热力学方程
Keywords:
attapulgite lightweight filter;  lead ion;  adsorption isotherm;  kinetic equation;  thermodynamic equation
分类号:
X 703
DOI:
10.3969/j.issn.2095-0411.2019.03.009
摘要:
以凹凸棒土为原料,制取一种新型轻质滤料并探讨其对Pb2+的静态吸附性能。探讨了滤料投加量、pH、吸附时间、初始浓度和温度对Pb2+吸附效果的影响。结果表明,粉末状凹凸棒土轻质滤料对Pb2+有较好的吸附作用,投加量为0.05 g时吸附量最高可达83.86 mg/g; 在酸性条件下,pH越大吸附效果越好; 吸附过程符合准二级动力学方程,且为多分子层吸附,更符合Freundlich等温吸附模型; 吸附过程受温度影响较大,在20～40 ℃时,吸附过程为吸热熵增过程,随温度升高吸附量增加,而在40～60 ℃时,吸附过程为放热熵减过程,随温度升高吸附量降低,吸附全程不能自发进行。
Abstract:
Using attapulgite as raw material, a new lightweight filter material was prepared to investigate its static adsorption performance to Pb2+. The influence of the amount of filter medium, pH, adsorption time, initial concentration and temperature on the adsorption of Pb2+ was investigated. The results showed that the powdery attapulgite light-weight filter had a good adsorption effect on Pb2+. The maximum adsorption capacity was up to 83.86 mg/g when the dosage was 0.05 g. Under acidic conditions, the higher the pH, the better the adsorption effect; the adsorption process conforms to the pseudo second-order kinetic equation and is a multi-layer adsorption, which is more consistent with the Freundlich adsorption model, the adsorption process is greatly affected by temperature, and the adsorption process is at 20—40 ℃. It is an endothermic entropy increase process. At the same time, the amount of adsorption increases with increasing temperature. At a temperature of 40—60 ℃, the adsorption process is an exothermic entropy decrease process. At the same time, as the temperature increases, the amount of adsorption decreases, and the entire process ΔG>0. The adsorption process cannot be performed spontaneously.

参考文献/References:

[1]施周,袁明洋,杨秀贞,等.磁性壳聚糖改性硅藻土吸附去除水中的铅离子[J]. 环境工程学报,2017,11(2):787-792.
[2]WANG Z.Efficient adsorption of dibutyl phthalate from aqueous solution by activated carbon developed from phoenix leaves[J].International Journal of Environmental Science and Technology,2015,12(6):1923-1932.
[3]孔泳,王志良,倪珺华,等.凹凸棒土应用于重金属离子吸附剂的研究[J].分析测试学报, 2010,29(12):1224-1227.
[4]周岳溪,王晓松,孔欣,等.含重金属离子废水吸附过滤处理技术(Ⅰ)——新型吸附过滤材料的研究[J].环境科学研究,1994(6):46-50.
[5]WANG Z,ZHONG M G,CHEN L.Coal-based granular activated carbon loaded with MnO2 as an efficient adsorbent for removing formaldehyde from aqueous solution[J]. Desalination and Water Treatment,2016,57(28):13225-13235.
[6]WANG Z,ZHONG M G,WAN J F,et al.Development of attapulgite composite ceramsite/quartz sand double-layer biofilter for micropolluted drinking source water purification[J].International Journal of Environmental Science and Technology,2016,13(3):825-834.
[7]DONG L,LIN L,LI Q,et al. Enhanced nitrate-nitrogen removal by modified attapulgite-supported nanoscale zero-valent iron treating simulated groundwater[J]. Journal of Environmental Management, 2018, 213:151-158.
[8]崔永杰.不同粒径粉末活性炭的吸附特性研究 [D].西安:西安建筑科技大学,2009.
[9]TANG J,MU B,ZONG L,et al. Facile and green fabrication of magnetically recyclable carboxyl-functionalized attapulgite/carbon nanocomposites derived from spent bleaching earth for wastewater treatment[J]. Chemical Engineering Journal,2017,322:102-114.
[10]徐迪民,高乃云,范瑾初.氧化铝涂层砂变性滤料的除锌效果研究[J]. 给水排水,2000(3):32-36.
[11]周友飞,荆肇乾,黄新.粉煤灰基质滤料处理含锰废水的研究[J].环保科技,2011,17(2):28-30.
[12]赵超凡,黄晓岚,张言.改性粒状凹凸棒石对Cu、Ni、Cd离子的吸附性能研究[J].环境工程,2014,32(7):67-137.
[13]李佳,林少华.粉末状珍珠岩对Ni2+的吸附特性研究[J].广东化工,2016,43(18):6-8.
[14]姚超,刘敏,李为民.凹凸棒石/氧化锌纳米复合材料对亚甲基蓝吸附性能[J]. 环境科学学报,2010,30(6):1211-1219.
[15]刘亚清,张凤娥,林秀.超声-镧改性沸石吸附氮磷的特性[J].常州大学学报(自然科学版),2019,31(2):76-81.
[16]王碧钰,朱宇恩,李华.醋糟生物炭对水体中Pb(Ⅱ)吸附的影响[J].环境工程,2016,34(12):6-11.

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备注/Memo

备注/Memo:
收稿日期:2018-10-15。
基金项目:2018年度南京市建邺区“高层次创业人才引进计划”(建人才发〔2018〕2号)。
作者简介:徐朦(1995—),女,江苏无锡人,硕士生。通信联系人:董良飞(1972-),E-mail:dlf@cczu.edu.cn
更新日期/Last Update: 2019-05-29