研究论文

柴胡药渣对锌离子的吸附动力学特性

  • 代群威 ,
  • 王岩 ,
  • 赵玉连 ,
  • 周世平 ,
  • 杨兴旺 ,
  • 张伟
展开
  • 1. 西南科技大学环境与资源学院; 固体废物处理与资源化省部共建教育部重点实验室, 绵阳621010;
    2. 四川德培源中药科技开发有限公司, 绵阳621000;
    3. 西南科技大学环境与资源学院; 四川省环境工程自控技术重点实验室, 绵阳621010
代群威,副教授,研究方向为环境友好材料,电子信箱:qw_dai@163.com

收稿日期: 2014-04-28

  修回日期: 2014-06-24

  网络出版日期: 2014-08-01

基金资助

国家自然科学基金项目(41102212);西南科技大学自然科学基金项目(12zx7121)

Biosorption Kinetics Characteristics of Bupleurum Dreg to Zinc Ions

  • DAI Qunwei ,
  • WANG Yan ,
  • ZHAO Yulian ,
  • ZHOU Shiping ,
  • YANG Xingwang ,
  • ZHANG Wei
Expand
  • 1. Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education; School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China;
    2. Depeiyuan Chinese Traditional Medicine Science and Technology Development Co., Ltd., Mianyang 621000, China;
    3. Key Laboratory of Sichuan Province Auto Control Technology of Environment Engineering; Southwest University of Science and Technology School of Environment and Resource, Mianyang 621010, China

Received date: 2014-04-28

  Revised date: 2014-06-24

  Online published: 2014-08-01

摘要

为了探讨柴胡药渣对含锌废水的吸附特性和液相pH 值、电导率变化特性,以柴胡药渣为生物吸附剂,进行了Zn2+批量吸附实验研究。分析了液相pH 值、Zn2+初始浓度(C0)、柴胡药渣加入质量浓度(ρm)、粒度(Mz)等因素对吸附效果的影响,并进行等温吸附模拟及吸附动力学相关分析。结果表明,实验室环境下的较佳的吸附条件为:pH 值为4.0~6.0,ρm 为4.0~8.0 g/L,Mz为40~100 目,C0为0.1~2.0 mmol/L。柴胡药渣对Zn2+的等温吸附结果很好符合了Langmuir 和Freunlich 吸附模型,R2分别为0.978 和0.989;计算所得最大吸附量(qmax)达到19.96 mg/g,说明柴胡药渣对Zn2+有很好的吸附能力。动力学吸附分析表明,柴胡药渣对Zn2+的吸附是一个快速进行的反应过程,二级吸附速率方程拟合结果中R2均在0.997 以上,由此认为其吸附反应过程中限速步骤是化学吸附过程。柴胡药渣对Zn2+吸附过程中液相pH 值分析表明,pH 值呈现初始阶段迅速升高后进入缓慢变化的趋势。

本文引用格式

代群威 , 王岩 , 赵玉连 , 周世平 , 杨兴旺 , 张伟 . 柴胡药渣对锌离子的吸附动力学特性[J]. 科技导报, 2014 , 32(21) : 21 -25 . DOI: 10.3981/j.issn.1000-7857.2014.21.002

Abstract

In order to explore the adsorption characteristics, liquid pH, and electrical conductivity variation characteristics of bupleurum dreg to the waste water containing zinc, the bupleurum dreg was utilized as biosorbent to remove Zn2+ with batch experiments. The effect factors on biosorption were analyzed, which included pH values, initial Zn2+ concentration (C0), biosorbent concentration (ρm), and mesh size (Mz). Meanwhile, the isotherm biosorption and kinetics was analyzed. The results showed that the optimum condition for biosorption was as follows: pH was 4.5~6.0, ρm was 4.0~8.0 g/L, C0 was 0.1~2.0mmol/L, Mz was 40~100 mesh. The isotherm adsorption curve of Zn2+ on bupleurum dreg accorded well with Langmuir and Freunlich model, and the R2 value was 0.978 and 0.989 while the value of qmax was 19.96 mg/g. This shows that a bupleurum dreg has excellent adsorption capacity to zinc ions. The kinetics analysis showed that the biosorption of Zn2+ on bupleurum dreg was a rapid process, and the R2 values were all above 0.997. These indicated that its limit step was chemical adsorption process. The variation trend of pH values in liquid was increasing rapidly at initial adsorption phase and then changed slowly in the succedent phases.

参考文献

[1] Gupta V K, Rastogi A. Biosorption of lead from aqueous solutions by green algae Spirogyra species: Kinetics and equilibrium studies[J]. Journal of Hazardous Materials, 2008, 152(1): 407-414.
[2] 代群威, 董发勤, Noonan M J, 等. 面包酵母菌在铅铜模拟废水中的吸附动力学[J]. 中国有色金属学报, 2010, 20(4): 788-794. Dai Qunwei, Dong Faqin, Noonan M J, et al. Biosorption kinetics of baker's yeast in lead and copper waste water[J]. Transactions of Nonferrous Metals Society of China, 2010, 20(4): 788-794.
[3] Dursun A Y. A comparative study on determination of the equilibrium, kinetic and thermodynamic parameters of biosorption of copper (II) and lead (II) ions onto pretreated Aspergillus niger[J]. Biochemical Engineering Journal, 2006, 28(2): 187-195.
[4] Zhang Y, Banks C. The interaction between Cu, Pb, Zn and Ni in their biosorption onto polyurethane-immobilised Sphagnum moss[J]. Journal of Chemical Technology and Biotechnology, 2005, 80(11): 1297-1305.
[5] Goksungur Y, Uren S, Guvenc U. Biosorption of cadmium and lead ions by ethanol treated waste Baker's yeast biomass[J]. Bioresource Technology, 2005, 96(1): 103-109.
[6] 代淑娟, 魏德洲, 白丽梅, 等. 生物吸附-沉降法去除电镀废水中镉[J]. 中国有色金属学报, 2008, 18(10): 1945-1950. Dai Shujuan, Wei Dezhou, Bai Limei, et al. Removing cadmium from cadmium-containing electroplating wastewater by biosorptionsedimentation[ J]. Transactions of Nonferrous Metals Society of China, 2008, 18(10): 1945-1950.
[7] 袁红江, 全学军, 冉秀芝, 等. 油茶饼粕生物吸附剂对Ni2+的吸附性能[J]. 化工学报, 2011, 62(4): 986-993. Yuan Hongjiang, Quan Xuejun, Ran Xiuzhi, et al. Adsorption performance of Camellia cakes as bioadsorbent for removal of Ni2+[J]. Journal of Chemical Industry and Engineering, 2011, 62(4): 986-993.
[8] 马海虎, 戴灵鹏, 冯燕宁, 等. 满江红干体对锌离子的生物吸附[J]. 环境工程学报, 2009, 3(7): 1175-1179. Ma Haihu, Dai Lingpeng, Feng Yanning, et al. Biosorption of Zn(II) by dried Azolla imbricata biomass[J]. Chinese Journal of Environmental Engineering, 2009, 3(7): 1175-1179.
[9] Li J, Chen E Z, SU H J. Biosorption of Pb2 + with modified soybean hulls as absorbent[J]. Chinese Journal of Chemical Engineering, 2011, 19(2): 334-339.
[10] 韦平英, 魏东林, 莫德清. 板蓝根药渣对低浓度含铅废水的吸附特性研究[J]. 离子交换与吸附, 2003, 19(4): 351-356. Wei Pingying, Wei Donglin, Mo Deqing. Biosorption of lead by Isatis Indigotica fort draff[J]. Ion Exchange and Adsorption, 2003, 19(4): 351-356.
[11] 谢东浩, 蔡宝昌, 安益强, 等. 柴胡皂苷类化学成分及药理作用研究进展[J]. 南京中医药大学学报, 2007, 23(1): 63-65. Xie Donghao, Cai Baochang, An Yiqiang, et al. Advances in chemical components and pharmacology of Bupleurum Saikosaponin[J]. Journal of Nanjing University of Traditional Chinese Medicine, 2007, 23(1): 63-65.
[12] 黄德乾, 王玉军, 汪鹏, 等. 三种不同类型土壤上水稻对Cu、Pb 和 Cd 单一及复合污染的响应[J]. 农业环境科学学报, 2008, 27(1): 46-49. Huang Deqian, Wang Yujun, Wang Peng, et al. Response of rice in three types of soils to Cu, Pb and Cd with single and combined pollution[J]. Journal of Agro-Environment Science, 2008, 27(1): 46-49.
[13] 龙新宪, 倪吾钟, 杨肖娥. 菜园土壤锌的吸附—解吸特性研究[J]. 土壤通报, 2002, 33(1): 51-53. Long Xinxian, Nin Wuzhong, Yang Xiaoe. Studies on the zinc adsorption-desorption characteristics of vegetable garden soils[J]. Chinese Journal of Soil Science, 2002, 33(1): 51-53.
[14] 周洪英, 贾海红, 李娜. 两种褐藻对水溶液中Zn2+的吸附研究[J]. 食品研究与开发, 2012, 33(1): 150-154. Zhou Hongying, Jia Haihong, Li Na. Study on the biosorption of Zn2+ by two brown algae[J]. Food Research and Development, 2012, 33(1): 150-154.
文章导航

/