小麦秸秆生物炭对水中Cd<sup>2+</sup>的吸附特性研究

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (818 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The objective of this work was to investigate adsorptive characteristic of wheat straw biochar (WSBC) for removal of cadmium ions (Cd²⁺) from aqueous solution. Batch adsorption experiments were carried out to evaluate the effects of pH value of solution, adsorbent dosage, and co-existing cations on the adsorption of Cd²⁺ using biochar, and the structural characteristics of biochar were analyzed. The results showed that the biochar contained a large amount of oxygen-containing group on the surface. The adsorption efficiency depended on pH value of solution. The adsorption kinetic data were fitted with pseudo-first-order, pseudo-second-order, Elovich, and intra-particle diffusion models. The pseudo-second-order model provided the best fitting for the adsorption kinetics of Cd²⁺ onto WSBC. In addition, three isotherm models, Langmuir, Freundlich, and Temkin ones were applied to determine the isotherm parameters of adsorption process. The results indicated that the adsorption isotherm was described well with the Freundlich model. Thermodynamics analysis suggested that Cd²⁺ adsorption onto WSBC was spontaneous and endothermic process.

Key words： wheat straw biochar adsorption cadmium adsorption kinetics

Received: 16 June 2016

PACS:

X131

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	MA Feng-feng
	ZHAO Bao-wei
	DIAO Jing-ru

Cite this article:

MA Feng-feng,ZHAO Bao-wei,DIAO Jing-ru. Adsorptive characteristics of cadmium onto biochar produced from pyrolysis of wheat straw in aqueous solution[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(2): 551-559.

URL:

http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2017/V37/I2/551

[1]	Zeng G M, Liu Y Y, Lin T, et al. Enhancement of Cd(Ⅱ) adsorption by polyacrylic acid modified magnetic mesoporous carbon[J]. Chemical Engineering Journal, 2015,259:153-160.
[2]	林晓燕,牟仁祥,曹赵云,等.耐镉细菌菌株的分离及其吸附镉机理研究[J]. 农业环境科学学报, 2015,34(9):1700-1706.
[3]	Tan C, Zhou Z, Rong H, et al. Adsorption of cadmium by biochar derived from municipal sewage sludge:Impact factors and adsorption mechanism[J]. Chemosphere, 2015,134:286-293.
[4]	Wang Z Y, Zhao J, Song L, et al. Adsorption and desorption of phenanthrene on carbon nanotubes in simulated gastrointestinal fluids[J]. Environmental Science & Technology, 2011,45(14):6018-6024.
[5]	马锋锋,赵保卫,钟金魁,等.牛粪生物炭对磷的吸附特性及其影响因素研究[J]. 中国环境科学, 2015,35(4):1156-1163.
[6]	Xin H, Ding Z H, Zimmerman A R, et al. Batch and column sorption of arsenic onto iron-impregnated biochar synthesized through hydrolysis[J]. Water Research, 2015,68:206-216.
[7]	Tan X F, Liu Y G, Zeng G M, et al. Application of biochar for the removal of pollutants from aqueous solutions[J]. Chemosphere, 2015,125:70-85.
[8]	郑智旗,何进,张祥彩,等.秸秆沟埋还田技术的研究现状与展望[J]. 农机化研究, 2016,9:10-16.
[9]	Zhang R, Jing J, Tao J, et al. Chemical characterization and source apportionment of pm 2.5in beijing:Seasonal perspective[J]. Atmospheric Chemistry and Physics, 2013,13(14):7053-7074.
[10]	Huang H J, Yuan X Z, Zeng G M, et al. Thermochemical liquefaction of rice husk for bio-oil production with sub-and supercritical ethanol as solvent[J]. Journal of Analytical & Applied Pyrolysis, 2013,102(7):60-67.
[11]	Cui X Q, Fang S Y, Yao Y Q, et al. Potential mechanisms of cadmium removal from aqueous solution by canna indica derived biochar[J]. Science of the Total Environment, 2016,562:517-525.
[12]	Keiluweit M, Nico P S, Johnson M G, et al. Dynamic molecular structure of plant biomass-derived black carbon (biochar)[J]. Environmental Science & Technology, 2010,44(4):1247-1253.
[13]	Ming Z, Gao B, Ying Y, et al. Synthesis, characterization, and environmental implications of graphene-coated biochar[J]. Science of the Total Environment, 2012,435-436(7):567-572.
[14]	Wu Z B, Zhong H, Yuan X Z, et al. Adsorptive removal of methylene blue by rhamnolipid-functionalized graphene oxide from wastewater[J]. Water Research, 2014,67C:330-344.
[15]	Anirudhan T S, Jalajamony S, Suchithra P S. Improved performance of a cellulose-based anion exchanger with tertiary amine functionality for the adsorption of chromium() from Ⅵ aqueous solutions[J]. Colloids & Surfaces A Physicochemical & Engineering Aspects, 2009,335(1-3):107-113.
[16]	王震宇,刘国成,Monica,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.
[17]	徐楠楠,林大松,徐应明,等.玉米秸秆生物炭对Cd2+的吸附特性及影响因素[J]. 农业环境科学学报, 2014,33(5):958-964.
[18]	李力,陆宇超,刘娅,等.玉米秸秆生物炭对Cd(Ⅱ)的吸附机理研究[J]. 农业环境科学学报, 2012,31(11):2277-2283.
[19]	Tan P, Sun J, Hu Y Y, et al. Adsorption of Cu2+, Cd2+ and Ni2+ from aqueous single metal solutions on graphene oxide membranes[J]. Journal of Hazardous Materials, 2015,297:251-260.
[20]	Zhao Y F, Zhang B, Zhang X, et al. Preparation of highly ordered cubic naa zeolite from halloysite mineral for adsorption of ammonium ions[J]. Journal of Hazardous Materials, 2010,178(1-3):658-664.
[21]	Song Z G, Lian F, Yu Z H, et al. Synthesis and characterization of a novel MnOx-loaded biochar and its adsorption properties for Cu2+ in aqueous solution[J]. Chemical Engineering Journal, 2014,242(8):36-42.
[22]	Wu Q, Chen J, Clark M, et al. Adsorption of copper to different biogenic oyster shell structures[J]. Applied Surface Science, 2014,311(9):264-272.