高级搜索

改性谷壳生物炭负载磁性Fe去除废水中Pb2+的效果及机制

,  ,  ,  ,  ,  ,  , 

downloadPDF

上一篇

下一篇

曹玮, 周航, 邓贵友, 杜文琪, 杨文弢, 辜娇峰, 彭佩钦, 廖柏寒. 改性谷壳生物炭负载磁性Fe去除废水中Pb2+的效果及机制[J]. 环境工程学报, 2017, 11(3): 1437-1444. doi: 10.12030/j.cjee.201511081
引用本文: 曹玮, 周航, 邓贵友, 杜文琪, 杨文弢, 辜娇峰, 彭佩钦, 廖柏寒. 改性谷壳生物炭负载磁性Fe去除废水中Pb2+的效果及机制[J]. 环境工程学报, 2017, 11(3): 1437-1444. doi: 10.12030/j.cjee.201511081
shu
CAO Wei, ZHOU Hang, DENG Guiyou, DU Wenqi, YANG Wentao, GU Jiaofeng, PENG Peiqin, LIAO Bohan. Effects and mechanisms of magnetic iron supported on rice husk biochar removing Pb2+ in wastewater[J]. Chinese Journal of Environmental Engineering, 2017, 11(3): 1437-1444. doi: 10.12030/j.cjee.201511081
Citation: CAO Wei, ZHOU Hang, DENG Guiyou, DU Wenqi, YANG Wentao, GU Jiaofeng, PENG Peiqin, LIAO Bohan. Effects and mechanisms of magnetic iron supported on rice husk biochar removing Pb2+ in wastewater[J]. Chinese Journal of Environmental Engineering, 2017, 11(3): 1437-1444. doi: 10.12030/j.cjee.201511081
shu

改性谷壳生物炭负载磁性Fe去除废水中Pb2+的效果及机制

  • 1.

    中南林业科技大学环境科学与工程学院, 长沙 410004

  • 基金项目:

    国家自然科学基金资助项目（41501344）

    农业部与财政部科研专项（农办财函[2014]28号）

    湖南省重点学科建设项目（2006180）

  • 中图分类号: X703

Effects and mechanisms of magnetic iron supported on rice husk biochar removing Pb2+ in wastewater

  • 1.

    College of Environment Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China

  • Fund Project:

  • 摘要: 将谷壳生物炭用酸改性后负载磁性Fe3O4，得到一种新的吸附材料（BC-Fe）。通过单因素吸附实验，研究了时间、pH、添加量、浓度以及温度等参数对BC-Fe吸附废水中Pb2+的影响，并对其进行比表面积及傅里叶红外光谱分析，探讨该磁性生物炭对Pb2+的吸附机理。结果表明，BC-Fe对Pb2+的吸附能在2 h内基本达到平衡。在Pb2+溶液初始浓度为100 mg·L-1，pH=5.0，温度为25℃，分别添加0.1 g和0.15 g的BC-Fe于50 mL Pb2+溶液中，单位质量的BC-Fe对溶液中Pb2+的吸附量分别为40.6 mg·g-1和33.2 mg·g-1，去除率分别为81.3%和99.9%。该吸附过程符合拟二级动力学模型，理论平衡吸附量为43.9 mg·g-1。用Langmuir等温吸附方程能够很好地描述其吸附行为；热力学研究表明，BC-Fe对Pb2+的吸附过程是自发的吸热过程。
    Abstract: In this study,rice husk biochar was modified by acid and loaded with magnetic nano-Fe3O4,forming a new adsorbent material (named BC-Fe). A one-factor batch experiment was conducted using BC-Fe to remove Pb2+ ions from simulated wastewater,considering such factors as contact time,solution pH,adsorbent dose,initial Pb2+ concentration,and temperature. Meanwhile,the specific surface area and Fourier transform infrared spectra of BC-Fe were analyzed. The purpose of this study was to investigate the characteristics and mechanisms of Pb2+ adsorption from wastewater onto BC-Fe. The results showed that the adsorption equilibrium was reached within 2 h. Under the conditions of an initial Pb2+ concentration of 100 mg·L-1,a solution pH of 5.0,and a temperature of 25℃,the Pb2+ adsorption capacity and removal ratio achieved using 0.1 g of BC-Fe in 50 mL Pb2+ solution were 40.6 mg·g-1 and 81.3%,respectively. The corresponding values for 0.15 g of BC-Fe were and 33.2 mg·g-1 and 99.9%. The adsorption reaction of Pb2+ onto BC-Fe was well described by quasi-two-level dynamics,and the equilibrium adsorption capacity was 43.9 mg·g-1. The adsorption of Pb2+ onto BC-Fe was well fitted by the Langmuir adsorption isotherm model,and the thermodynamics data indicated that the adsorption of Pb2+ onto BC-Fe was spontaneous and endothermic.
  • 加载中
  • [1] 王娟, 张乐乐, 康宜宁, 等. Pb在水花生愈伤组织中的超微定位及对矿质元素的影响[J]. 水生生物学报, 2012, 36(2):307-315
    [2] FU Fenglian, WANG Qi. Removal of heavy metal ions from wastewaters:A review[J]. Journal of Environmental Management, 2011, 92(3):407-418
    [3] HANIGAN D, ZHANG Jinwei, HERCKES P, et al. Adsorption of N-nitrosodimethylamine precursors by powdered and granular activated carbon[J]. Environmental Science & Technology, 2012, 46(22):12630-12639
    [4] 程珊珊, 杨锡洪, 章超桦, 等. 壳聚糖对Cd2+和Pb2+的吸附作用[J]. 水产学报, 2011, 35(3):410-416
    [5] 史明明, 刘美艳, 曾佑林, 等. 硅藻土和膨润土对重金属离子Zn2+、Pb2+及Cd2+的吸附特性[J]. 环境化学, 2012, 31(2):162-167
    [6] LEE C R, KIM H S, JANG I H, et al. Pseudo first-order adsorption kinetics of N719 dye on TiO2 surface[J]. ACS Applied Materials & Interfaces, 2011, 3(6):1953-1957
    [7] CHENG C H, LEHMANN J, THIES J E, et al. Oxidation of black carbon by biotic and abiotic processes[J]. Organic Geochemistry, 2006, 37(11):1477-1488
    [8] 张蕊, 葛滢. 稻壳基活性炭制备及其对重金属吸附研究[J]. 环境污染与防治, 2011, 33(2):41-45
    [9] 冯彦房, 薛利红, 杨梖, 等. 载镧生物炭的优化制备及其对水体中砷的吸附[J]. 中国环境科学, 2015, 35(8):2433-2441
    [10] 王震宇, 刘国成, XING M, 等. 不同热解温度生物炭对Cd(Ⅱ)的吸附特性[J]. 环境科学, 2014, 35(12):4735-4744
    [11] TONG Xuejiao, LI Jiuyu, YUAN Jinhua, et al. Adsorption of Cu(Ⅱ)by biochars generated from three crop straws[J]. Chemical Engineering Journal, 2011, 172(2/3):828-834
    [12] 耿勤, 张平, 廖柏寒, 等. 生物质炭对溶液中Cd2+的吸附[J]. 环境工程学报, 2015, 9(4):1675-1679
    [13] 安增莉, 侯艳伟, 蔡超, 等. 水稻秸秆生物炭对Pb(Ⅱ)的吸附特性[J]. 环境化学, 2011, 30(11):1851-1857
    [14] 郭素华, 许中坚, 李方文, 等. 生物炭对水中Pb(Ⅱ)和Zn(Ⅱ)的吸附特征[J]. 环境工程学报, 2015, 9(7):3215-3222
    [15] 李坤权, 杨美蓉, 王燕锦, 等. 新型胺化介孔炭的制备及其对Pb(Ⅱ)的吸附[J]. 中国环境科学, 2014, 34(8):1985-1992
    [16] YANG Guangxi, JIANG Hong. Amino modification of biochar for enhanced adsorption of copper ions from synthetic wastewater[J]. Water Research, 2014, 48:396-405
    [17] XU Piao, ZENG Guangming, HUANG Danlian, et al. Use of iron oxide nanomaterials in wastewater treatment:A review[J]. Science of the Total Environment, 2012, 424:1-10
    [18] GONG Jilai, WANG Xiyang, ZENG Guangming, et al. Copper (Ⅱ)removal by pectin-iron oxide magnetic nanocomposite adsorbent[J]. Chemical Engineering Journal, 2012, 185-186:100-107
    [19] 许飘. 磁性纳米固定化黄孢原毛平革菌对铅离子的吸附及其机理研究[D]. 长沙:湖南大学, 2012
    [20] 陈和生, 孙振亚, 邵景昌. 八种不同来源二氧化硅的红外光谱特征研究[J]. 硅酸盐通报, 2011, 30(4):934-937
    [21] ZAITSEV V S, FILIMONOV D S, PRESNYAKOV I A, et al. Physical and chemical properties of magnetite and magnetite-polymer nanoparticles and their colloidal dispersions[J]. Journal of Colloid and Interface Science, 1999, 212(1):49-57
    [22] NASSAR N N. Rapid removal and recovery of Pb(Ⅱ)from wastewater by magnetic nanoadsorbents[J]. Journal of Hazardous Materials, 2010, 184(1/2/3):538-546
    [23] LIANG Sha, GUO Xueyi, FENG Ningchuan, et al. Adsorption of Cu2+ and Cd2+ from aqueous solution by mercapto-acetic acid modified orange peel[J]. Colloids and Surfaces B:Biointerfaces, 2009, 73(1):10-14
    [24] CHEN Hao, ZHAO Jie, DAI Guoliang, et al. Adsorption characteristics of Pb(Ⅱ)from aqueous solution onto a natural biosorbent, fallen Cinnamomum camphora leaves[J]. Desalination, 2010, 262(1/2/3):174-182
    [25] XU Xiaoyun, CAO Xinde, ZHAO Ling, et al. Removal of Cu, Zn, and Cd from aqueous solutions by the dairy manure-derived biochar[J]. Environmental Science and Pollution Research, 2013, 20(1):358-368
    [26] 黄鑫, 高乃云, 张巧丽. 改性活性炭对镉的吸附研究[J]. 同济大学学报(自然科学版), 2008, 36(4):508-513
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  1540
  • HTML全文浏览数:  1147
  • PDF下载数:  402
  • 施引文献:  0
出版历程
  • 收稿日期:  2016-01-12
  • 刊出日期:  2017-03-10

改性谷壳生物炭负载磁性Fe去除废水中Pb2+的效果及机制

  • 1. 中南林业科技大学环境科学与工程学院, 长沙 410004
  • 收稿日期:  2016-01-12
基金项目:

国家自然科学基金资助项目（41501344）

农业部与财政部科研专项（农办财函[2014]28号）

湖南省重点学科建设项目（2006180）

摘要: 将谷壳生物炭用酸改性后负载磁性Fe3O4，得到一种新的吸附材料（BC-Fe）。通过单因素吸附实验，研究了时间、pH、添加量、浓度以及温度等参数对BC-Fe吸附废水中Pb2+的影响，并对其进行比表面积及傅里叶红外光谱分析，探讨该磁性生物炭对Pb2+的吸附机理。结果表明，BC-Fe对Pb2+的吸附能在2 h内基本达到平衡。在Pb2+溶液初始浓度为100 mg·L-1，pH=5.0，温度为25℃，分别添加0.1 g和0.15 g的BC-Fe于50 mL Pb2+溶液中，单位质量的BC-Fe对溶液中Pb2+的吸附量分别为40.6 mg·g-1和33.2 mg·g-1，去除率分别为81.3%和99.9%。该吸附过程符合拟二级动力学模型，理论平衡吸附量为43.9 mg·g-1。用Langmuir等温吸附方程能够很好地描述其吸附行为；热力学研究表明，BC-Fe对Pb2+的吸附过程是自发的吸热过程。

English Abstract

    全文HTML

参考文献 (26)

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心