巯基化稻壳炭吸附废水中Zn(Ⅱ)试验研究

程德义; 杜超; 黄兆琴; 代静玉; 杜琪雯; 邵爱云

doi:10.3969/j.issn.1674-991X.2018.05.068

巯基化稻壳炭吸附废水中Zn(Ⅱ)试验研究

doi: 10.3969/j.issn.1674-991X.2018.05.068

^1.南京农业大学资源与环境科学学院,江苏南京 210095
^2.江苏城市职业学院,江苏南京 210036

详细信息

作者简介:
程德义(1991—),男,硕士,研究方向为水体污染控制与修复

中图分类号: X131.2
计量
- 文章访问数: 578
- HTML全文浏览量: 121
- PDF下载量: 394
- 被引次数: 0
出版历程
- 收稿日期: 2018-04-04
- 刊出日期: 2018-09-20

Adsorption of Zn(Ⅱ) from wastewater by sulfhydryl rice husk carbon

^1.College of Resources and Environmental Sciences, Jiangsu Nanjing Agricultural University, Nanjing 210095, China
^2.City Vocational College of Jiangsu, Nanjing 210036, China

摘要

摘要: 通过巯基乙酸改性稻壳炭去除废水中的Zn(Ⅱ),研究溶液的pH、反应温度和时间以及解吸对巯基化稻壳炭(RD350)吸附效果的影响,并对改性材料进行扫描电镜(SEM)和X射线能量色散谱(EDS)分析。结果表明:通过化学改性向稻壳炭引入巯基,改性稻壳炭的表面变得更加光滑,孔隙增大,且表面功能基团—SH含量增加,有利于提高对Zn(Ⅱ)的吸附能力。RD350适用的pH范围较宽(6~8),25 ℃时在300 min达到吸附平衡,吸附过程符合假二级动力学方程,为吸热反应。通过阿伦尼乌斯(Arrhenius)经验方程计算其活化能可知,吸附为活性化学吸附。由Langmuir吸附等温线方程计算可得,RD350对Zn(Ⅱ)的理论饱和吸附量为11.26 mg∕g,结合解吸可知该吸附剂对Zn(Ⅱ)的吸附有较好的固持性,具有一定的吸附效果。
- 稻壳炭 /
- 巯基改性 /
- 吸附 /
- 锌 /
- 吸附动力学
Abstract: Removal of zinc ions from the wastewater by mercapto acetic acid modified rice husk carbon was studied. The effects of pH, reaction temperature and time, and desorption on the adsorption effect of thiol based rice husk carbon were studied. Scanning electron microscopy and X ray energy spectrum analysis of modified materials were carried out. The results showed that the surface of modified rice husk carbon was more smooth and porous, and the surface functional group —SH content increased by the chemical modification to rice husk carbon, and the adsorption capacity of Zn(Ⅱ) was improved. The modified rice husk carbon has a wide range of pH (6-8), and the adsorption equilibrium is reached at 300 min at 25 ℃. The adsorption process conforms to the pseudo two kinetic equation and is an endothermic reaction. According to the activation energy calculation by Arrhenius empirical equation, the adsorption belongs to active chemical adsorption. Based on the Langmuir adsorption isotherm equation, the theoretical saturated adsorption capacity of the thiol rice husk carbon to Zn(Ⅱ) is 11.26 mg∕g. When combined with desorption, it is known that the adsorbent has good immobilization on Zn(Ⅱ) and has certain adsorption effect.
- rice husk carbon /
- sulfhydryl modification /
- adsorbent /
- zinc /
- adsorption kinetics

HTML全文

参考文献(32)

[1]	陈程,陈明.环境重金属污染的危害与修复[J].环境保护,2010(3):55-57. CHEN C,CHEN M.The harm and restoration of environmental heavy metal pollution[J].Environmental Protection,2010(3):55-57.
[2]	张富运,陈永华,吴晓芙,等.铅锌超富集植物及耐性植物筛选研究进展[J].中南林业科技大学学报,2012,32(12):92-96. ZHANG F Y,CHEN Y H,WU X F,et al.Research Progress on the screening of lead and zinc hyperconcentration plants and tolerance plants[J].Journal of Central South University of Forestry and Technology,2012,32(12):92-96.
[3]	肖乐勤,陈霜艳,周伟良.改性活性炭纤维对重金属离子的动态吸附研究[J].环境工程,2011,29(增刊1):289-293. XIAO L Q,CHEN S Y,ZHOU W L.Study on dynamic adsorption of heavy metal ions by modified activated carbon fiber[J].Environmental Engineering,2011,29(Suppl 1):289-293.
[4]	AYOUB A A,NAUSHAD M,ABDALLA M A,et al.Efficient removal of toxic metal ions from wastewater using a recyclable nanocomposite:a study of adsorption parameters and interaction mechanism[J].Cleaner Production,2017,156:426-436. doi: 10.1016/j.jclepro.2017.04.085
[5]	KUMIAWAN T A,CHAN G,LO W H,et al.Physicochemical treatment techniques for wastewater laden with heavy metals[J].Chemical Engineering Journal,2006,118(1):83-98. doi: 10.1016/j.cej.2006.01.015
[6]	方彩霞,李方方,贾晶,等.巯基改性互米花草对阳离子染料的吸附性能[J].环境工程技术学报,2017,7(2):189-193. FANG C X,LI F F,JIA J,et al.Adsorption properties of mercapto modified cross rice on cationic dyes[J].Journal of Environmental Engineering Technology,2017,7(2):189-193.
[7]	MALAMIS S,KATSOU E.A review on zinc and nickel adsorption on natura and modified zeolite,bentonite and vermiculite:examination of process parameters,kinetics and isotherms[J].Journal of Hazardous Materials,2013,252∕253:428-461. doi: 10.1016/j.jhazmat.2013.03.024 pmid: 23644019
[8]	范第武,李秀芝,黄斌,等.稻壳炭施加对设施土壤的改良效果[J].江苏农业学报,2016,32(2):345-350. FAN D W,LI X Z,HUANG B,et al.Effect of rice hull carbon on improved soil[J].Jiangsu Journal of Agricultural Sciences,2016,32(2):345-350.
[9]	王静,陈光辉,陈建,等.巯基改性活性炭对水溶液中汞的吸附性能研究[J].环境工程学报,2009,3(2):220-222. WANG J,CHEN G H,CHEN J,et al.Study on the adsorption of mercury in aqueous solution by sulfhydryl modified activated carbon[J].Journal of Environmental Engineering,2009,3(2):220-222.
[10]	吕娟,王明峰,蒋恩臣,等.不同热解温度下稻壳炭的理化特性分析[J].可再生能源,2017,35(10):1488-1453. LÜ J,WANG M F,JIANG E C,et al.Analysis of physicochemical properties of rice husk carbon under different pyrolysis temperatures[J].Renewable Energy Resources,2017,35(10):1488-1453.
[11]	许继星,黄维秋,王翊红,等.稻壳基硅活性炭的制备及其对油气吸附性能研究[J].化工新型材料,2017,45(9):213-217. XU J X,HUANG W Q,WANG Y H,et al.Preparation of rice husk based silicon activated carbon and its adsorption properties on oil and gas[J].New Chemical Materials for Chemical Industry,2017,45(9):213-217.
[12]	LI M,CHEN D Y,ZHU X F.Preparation of solid acid catalyst from rice husk char and its catalytic performance in esterification[J].Journal of Catalysis Chinese,2013,34(9):1674-1682. doi: 10.1016/S1872-2067(12)60634-2
[13]	YAMAUCHI Y,SUZUKI N,SATO K,et al.Active mercury(Ⅱ)ion removal:stoichiometrically controlled thiol-functionalized mesoporous silica by a mass production spray dry system[J].Bulletin of the Chemical Society of Japan,2009,82(1):1039-1043.
[14]	ZHANG C,SUI J,LI J,et al.Efficient removal of heavy metal ions by thiol-functionalized superparamagnetic carbon nanotubes[J].Chemical Engineering Journal,2012,210(1):45-52. doi: 10.1016/j.cej.2012.08.062
[15]	WU Z,CHENG Z,MA W.Adsorption of Pb(Ⅱ)from glucose solutionon thiol-functionalized cellulosic biomass[J].Bioresource Technology,2012,104:807-809. doi: 10.1016/j.biortech.2011.10.100 pmid: 22130077
[16]	高宝云,邱涛,李荣华,等.巯基改性玉米秸秆粉对水体重金属离子的吸能初探[J].西北农林科技大学学报,2012,40(3):186-190. GAO B Y,QIU T,LI R H,et al.Study on the absorption of heavy metal ions by sulfhydryl modified corn straw powder[J].Journal of Northwest A&F University,2012,40(3):186-190.
[17]	李青竹,覃文庆,柴立元,等.巯基化改性麦糟对Zn(Ⅱ)的吸附特性[J].中国有色金属学报,2014,24(4):1077-1083. LI Q Z,QIN W Q,CHAI L Y,et al.Adsorption properties of mercapto modified wheat grains on Zn(Ⅱ)[J].Chinese Journal of Nonferrous Metals,2014,24(4):1077-1083.
[18]	朱霞萍,刘慧,谭俊,等.巯基改性蒙脱石对Cd(Ⅱ)的吸附机理研究[J].岩矿测试,2013,32(4):613-620. ZHU X P,LIU H,TAN J,et al.Study on the adsorption mechanism of mercapto modified montmorillonite to Cd(Ⅱ)[J].Rock Ore Test,2013,32(4):613-620.
[19]	唐伟,郭悦,吴景贵,等.老化的生物质炭性质变化及对菲吸持的影响[J].环境科学,2014,35(7):2604-2611. TANG W,GUO Y,WU J G,et al.Changes in the properties of aging biomass carbon and its effect on the absorption of phenanthrene[J].Environmental Science,2014,35(7):2604-2611.
[20]	谢婧如,陈本寿,张进忠,等.巯基改性海泡石吸附水中的Hg(Ⅱ)[J].环境科学,2016,37(6):2188-2194. XIE J R,CHEN B S,ZHANG J Z,et al.Adsorption of Hg(Ⅱ)in water by sulfhydryl modified sepiolite[J].Environmental Science,2016,37(6):2188-2194.
[21]	CHAI L Y,LI Q Z,ZHU Y H,et al.Synjournal of thiol-functionalized spent grain as a novel adsorbent for divalent metalions[J].Bioresource Technology,2010,101(15):6269-6272.
[22]	陈云嫩,吴叶,刘海兵,等.巯基∕羧基改性麦糟吸附水中三价砷的研究[J].有色金属工程,2017,7(4):97-101. CHEN Y N,WU Y,LIU H B,et al.Study on the adsorption of trivalent arsenic in water by mercapto∕carboxyl modified wheat grains[J].Nonferrous Metals Engineering,2017,7(4):97-101.
[23]	LI D,JING D,PAN Y,et al.Coalescence and stability analysis of surface nanobubbles on polystyrene∕water interface[J].Langmuir:the Acs Journal of Surfaces & Colloids,2014,30(21):6079-6088. doi: 10.1021/la501262a pmid: 24818697
[24]	KRISHNANI K K,MENG X G,CHRISTODOULATOS C,et al.Biosorption mechanism of nine different heavy metals onto biomatrix from rice husk[J].Journal of Hazardous Materials,2008,153(3):1222-1234. doi: 10.1016/j.jhazmat.2007.09.113 pmid: 18006228
[25]	ALQADAMI A A,NAUSHAD M,ABDALLA M A,et al.Efficient removal of toxic metal ions from wastewater using a recyclable nanocomposite:a study of adsorption parameters and interaction mechanism[J].Journal of Cleaner Production,2017,156:426-436. doi: 10.1016/j.jclepro.2017.04.085
[26]	WANG H,XIE R Z,ZHANG J,et al.Preparation and characterization of distillers’ grain based activated carbon as low cost methylene blue adsorbent:mass transfer and equilibrium modeling[J].Advenced Powder Technology,2018,29:27-35.
[27]	HAN R P,ZHANG L J,SONG C,et al.Characterization of modified wheat straw,kinetic and equilibrium study about copper ion and methylene blue adsorption in batch mode[J].Carbohydrate Polymers,2010,79(4):1140-1149. doi: 10.1016/j.carbpol.2009.10.054
[28]	孔黎明,张婷,周祥,等.活性炭纤维吸附石化废水中苯酚的吸附平衡及动力学[J].化工学报,2015,66(12):4874-4882. KONG L M,ZHANG T,ZHOU X,et al.Adsorption equilibrium and kinetics of adsorption of phenol in petrochemical wastewater by activated carbon fiber[J].Journal of Chemical Industry,2015,66(12):4874-4882.
[29]	LIANG X F,XU Y M,WANG L,et al.Sorption of Pb²+ on mercapto functionalized sepiolite[J].Chemosphere,2013,90(2):548-555. doi: 10.1016/j.chemosphere.2012.08.027 pmid: 22995246
[30]	SHUKLA S R,PAI S.Adosorption of Cu(Ⅱ),Ni(Ⅱ)and Zn(Ⅱ)on dye loaded groundnut shells and sawdust[J].Separation and Purification Technology,2005,43:1-8. doi: 10.1016/j.seppur.2004.09.003
[31]	MONSER L,ADHOUM N.Modified activated carbon for the removal of copper,zinc,chromium and cyanide from wastewater[J].Separation and Purification Technology,2002,26:137-146. doi: 10.1016/S1383-5866(01)00155-1
[32]	李珊珊,冯燕,段莲,等.改性玉米秸秆对重金属吸附性能研究[J].饲草与饲料,2017(7):150-153. LI S S,FENG Y,DUAN L,et al.Study on adsorption properties of modified maize straw on heavy metals[J].Forage and Feed,2017(7):150-153.