[1]赫 斌,陈亚君,林 军,等.改性生物质炭对水溶液中Hg的吸附性能研究[J].南京师范大学学报(工程技术版),2018,(01):086.[doi:10.3969/j.issn.1672-1292.2018.01.012]
 He Bin,Chen Yajun,Lin Jun,et al.The Investigation of Modified Biochar’s AdsorptionPerformance on Hg in Solution[J].Journal of Nanjing Normal University(Engineering and Technology),2018,(01):086.[doi:10.3969/j.issn.1672-1292.2018.01.012]
点击复制

改性生物质炭对水溶液中Hg2+的吸附性能研究
分享到:

南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年01期
页码:
086
栏目:
化学工程
出版日期:
2018-03-31

文章信息/Info

Title:
The Investigation of Modified Biochar’s AdsorptionPerformance on Hg2+ in Solution
文章编号:
1672-1292(2018)01-0086-07
作者:
赫 斌1陈亚君2林 军13王风贺2李明海1
(1.南京师范大学化学与材料科学学院,江苏 南京 210023)(2.南京师范大学环境学院,江苏 南京 210023)(3.南京师范大学常州创新发展研究院,江苏 常州 213000)
Author(s):
He Bin1Chen Yajun2Lin Jun13Wang Fenghe2Li Minghai1
(1.School of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210023,China)(2.School of Environment,Nanjing Normal University,Nanjing 210023,China)(3.Changzhou Institute of Innovation and Development,Nanjing Normal University,Changzhou 213000,China)
关键词:
生物质炭改性Hg2+吸附
Keywords:
biomass carbonmodifiedHg2+adsorb
分类号:
X703
DOI:
10.3969/j.issn.1672-1292.2018.01.012
文献标志码:
A
摘要:
制备了KOH改性低温生物质炭(low temperature biochar modified by potassium hydroxide,BC-P)、KOH改性高温生物质炭(high temperature biochar modified by potassium hydroxide,HC-P)、NaHS改性低温生物质炭(low temperature biochar modified by sodium hydrosulfide,BC-S)、NaHS改性高温生物质炭(high temperature biochar modified by sodium hydrosulfide,HC-S),并研究了溶液pH、吸附剂投加量、吸附温度和Hg2+浓度等因素对上述 4种改性生物质炭吸附水溶液中Hg2+的影响. 结果表明,BC-S对Hg2+吸附效果最好,在pH为4、温度为298 K、投加量为1.2 g/L时,对10.0 mg/L的Hg2+溶液中Hg2+吸附量为8.48 mg/g,去除率达到97.89%. 准二级动力学能很好地描述BC-S对Hg2+的吸附动力学过程,其等温吸附过程符合Langmuir吸附等温线,吸附热力学表明298 K最有利于BC-S吸附Hg2+.
Abstract:
The low temperature biomass carbon modified by KOH(BC-P),high temperature biomass carbon modified by KOH(HC-P),low temperature biomass carbon modified by NaHS(BC-S)and high temperature biomass carbon modified by NaHS(HC-S)are prepared respectively. The influence of solution pH,adsorbents dosage,temperature and initial concentration of Hg2+ on the adsorption of Hg2+ of the four modified adsorbents are discussed. The results show that the adsorption capacity of BC-S is better than the other adsorbents. The maximum adsorption amounts is 8.48 mg/g and the removal percentage is 97.89% at the condition of pH 4,dosage 1.2 g/L and temperature 298 K. The pseudo-second-order model can describe the adsorption kinetic of BC-S on Hg2+ well and the adsorption behavior follows Langmuir model. Adsorption thermodynamics show that 298 K is the most favorable temperature to adsorb Hg2+.

参考文献/References:

[1] 冯新斌,仇广乐,付学吾,等. 环境汞污染[J]. 化学进展,2009,21:436-457.
FENG X B,QIU G L,FU X W,et al. Mercury population in the environment[J]. Progress in chemistry,2009,21:436-457.(in Chinese)
[2]张晓嘉,谢海英,陈鹤文,等. 化学沉淀法去除水中汞的试验研究[J]. 供水技术,2011,5(2):25-28.
ZHANG X J,XIE H Y,CHEN H W,et al. Chemical precipitation method for removal of mercury in water[J]. Water supply technology,2011,5(2):25-28.(in Chinese)
[3]LAU R I,CHEN W C,YUAN C S,et al. Enhancing the adsorption of vapor-phase mercury chloride with an innovative composite sulfur-impregnated activated carbon[J]. Journal of hazardous materials,2012(S217/218):43-50.
[4]CLERCQ J D. Removal of mercury from aqueous solutions by adsorption on a new ultra stable mesoporous adsorbent and on a commercial ion exchange resin[J]. International journal of industrial chemistry,2012,3(1):1.
[5]ESBRI J M,BERNAUS A,AVILA M,et al. XANES speciation of mercury in three mining districts-Almadén,Asturias(Spain),Idria(Slovenia)[J]. Journal of synchrotron radiation,2010,17(2):179-186.
[6]王晓伟,陈莎. 1-辛基-3-甲基咪唑离子液体作为可循环溶剂萃取/去除水中二价汞研究[J]. 化学学报,2014,72(11):1 147-1 151.
WANG X W,CHEN S. Use of ionic 1-octyl-3-methylimidazolium hexafluorophosphate as a reyclable solvent for extraction/removal of Hg(Ⅱ)from water[J]. Acta chimica sinica,2014,72(11):1 147-1 151.(in Chinese)
[7]董亚文. 改性稻壳灰对水中重金属铬和汞的吸附作用[D]. 哈尔滨:哈尔滨商业大学,2016.
DONG Y W. Adsorption of heavy metals Cr and Hg in water by modified rice husk ash[D]. Harbin:Harbin University of Commerce,2016.(in Chinese)
[8]GHORBANI M,LASHKENARI M S,EISAZADEH H. Application of polyaniline nanocomposite coated on rice husk ash for removal of Hg(Ⅱ)from aqueous media[J]. Synthetic metals,2011,161(13-14):1 430-1 433.
[9]刘明灯,王传义. 氨基化生物质炭吸附水中汞离子性能研究[J]. 应用化工,2013,42(6):1 035-1 038.
LIU M D,WANG C Y. Study on adsorption of mercury ion in water by aminated biomass carbon[J]. Applied chemical industry,2013,42(6):1 035-1 038.(in Chinese)
[10]谢新苹,蒋剑春,孙康,等. 改性竹活性炭去除汞离子[J]. 环境工程学报,2014,8(4):1 285-1 289.
XIE X P,JIANG J C,SUN K,et al. Removal of mercury ion by modified bamboo activated carbon[J]. Chinese journal of environmental engineering,2014,8(4):1 285-1 289.(in Chinese)
[11]林军,赫斌,苏佳伟,等. 低温条件下利用稻壳制备生物质吸附材料的方法,CN106984283A[P/OL]. [2017-05-25] http://d.g.wanfangdata.com.cn/Patent_CN201710376148.9.aspx.
LIN J,HE B,SU J W,et al. Preparation of biomass adsorption material from rice husk at low temperature,CN106984283A[P/OL]. [2017-05-25] http://d.g.wanfangdata.com.cn/Patent_CN201710376148.9.aspx.(in Chinese)
[12]TAN G,SUN W,XU Y,et al. Sorption of mercury(Ⅱ)and atrazine by biochar,modified biochars and biochar based activated carbon in aqueous solution[J]. Bioresource technology,2016,211:727-735.
[13]REGMI P,GARCIA MOSCOSO J L,KUMAR S,et al. Removal of copper and cadmium from aqueous solution using switchgrass biochar produced via hydrothermal carbonization process[J]. Journal of environmental management,2012,109(17):61-69.
[14]JIANG T Y,JIANG J,XU R K,et al. Adsorption of Pb(Ⅱ)on variable charge soils amended with rice-straw derived biochar[J]. Chemosphere,2012,89(3):249-256.
[15]SARI A,TUZEN M. Removal of mercury(Ⅱ)from aqueous solution using moss(drepanocladus revolvens)biomass:equilibrium,thermodynamic and kinetic studies[J]. Journal of hazardous materials,2009,171(1):500-507.
[16]丁世敏,封享华,汪玉庭,等. 交联壳聚糖多孔微球对染料的吸附平衡及吸附动力学分析[J]. 分析科学学报,2005,21(2):127-130.
DING S M,FENG X H,WANG Y T,et al. Adsorption equilibrium and adsorption kinetics of crosslinked chitosan porous microspheres[J]. Journal of analytical science,2005,21(2):127-130.(in Chinese)
[17]PRASAD A G D,ABDULLAH M A. Biosorption potential of potato peel waste for the removal of nickel from aqueous solutions:equilibrium and kinetic studies[J]. International journal of chemical engineering research,2009,1(2):77-78.
[18]仇欢,王风贺,李卉,等. 不同膨润土对含镉废水的吸附性能[J]. 环境工程学报,2016,10(11):6 513-6 518.
QIU H,WANG F H,LI H,et al. Adsorption properties of different bentonites for wastewater containing cadmium[J]. Chinese journal of environmental engineering,2016,10(11):6 513-6 518.(in Chinese)
[19]LANGMUIR I. The adsorption of gases on plane surfaces of glass,mica and pltinum[J]. Jamchemsoc,1918,143(9):1 361-1 403.
[20]FREUNDLICH H. über die adsorption in L?sungen[J]. Zeitschrift Für physikalische chemie,1907,57(1):385-470.
[21]赵凌宇,王延华,杨浩,等. 木屑和稻秆基生物质炭对汞的吸附特性比较[J]. 农业环境科学学报,2015,34(3):556-562.ZHAO L Y,WANG Y H,YANG H,et al. Comparison of adsorption characteristics of Hg by wood and rice straw based biomass charcoal[J]. Journal of agro-environment science,2015,34(3):556-562.(in Chinese)
[22]LIANG X,XU Y,WANG L,et al. Sorption of Pb2+ on mercapto functionalized sepiolite[J]. Chemosphere,2013,90(2):548-556.
[23]KUSHWAHA S,SREEDHAR B,SUDHAKAR P P. Adsorption of Hg2+ onto borassus flabellifer:a redox mechanism[J]. Chemical engineering journal,2012,s 193-194(12):328-338.

备注/Memo

备注/Memo:
收稿日期:2018-01-15.
基金项目:国家自然科学基金(41473071)、江苏省产学研前瞻性联合研究项目(BY2016001-03)、江苏省高校自然科学研究重大项目(16KJA610001).
通讯联系人:林军,博士,教授,研究方向:化工分离、废弃资源综合利用. E-mail:linjun@njnu.edu.cn
更新日期/Last Update: 1900-01-01