新生磷酸钙对没食子酸的吸附性能研究

田玉红; 徐想丽; 李利军; 周琪

doi:10.13386/j.issn1002-0306.2014.08.019

新生磷酸钙对没食子酸的吸附性能研究

广西科技大学生物与化学工程学院

基金项目:

国家自然科学基金(31060219)； 2011年度广西高等学校优秀人才资助计划项目(桂教人[2011]40号)；

详细信息

作者简介:
田玉红 (1969-) , 女, 博士, 教授, 研究方向:天然产物化学。;

中图分类号: TS244.11;O647.3
计量
- 文章访问数: 149
- HTML全文浏览量: 19
- PDF下载量: 170
出版历程
- 收稿日期: 2013-07-21

Adsorption characteristics of gallic acid on fresh calcium phosphate

College of Biological and Chemical Engineering, Guangxi University of Science and Technology

摘要

摘要: 研究了新生磷酸钙对没食子酸的吸附特性。根据对吸附动力学数据进行的粒内扩散模型、准一级动力学模型和准二级动力学模型的拟合结果可知,当没食子酸的初始浓度分别为25、50、75mg/L时,新生磷酸钙对没食子酸的吸附过程均可用准二级动力学方程描述(R2=0.9943~0.9946)。pH是影响吸附作用的重要因素,当pH在7.2~7.5之间时,没食子酸的吸附量达到最大值。吸附等温曲线符合Langmuir模型(R2=0.9965),由Langmuir线性拟合方程可得新生磷酸钙对没食子酸的饱和吸附量为8.4317mg/g。
- 新生磷酸钙 /
- 没食子酸 /
- 吸附动力学 /
- 吸附等温线
Abstract: The adsorption characteristics of gallic acid on fresh calcium phosphate were discussed. Three kinetic models, including pseudo-first-order model, pseudo-second-order model and intraparticle diffusion model, were selected to follow the adsorption processes. The results showed that the pseudo-second-order equation provided the best correlation to the experimental data ( R2= 0. 9943 ~ 0. 9946) , under the initial gallic acid concentration were 25, 50, 75mg/L. pH value was an important factor for affecting adsorption. The amount of adsorbed gallic acid reached maximum when pH value was between 7.2 and 7.5. The results showed that the adsorption isotherm could be described by Langmuir model (R2=0.9965) , and the saturated adsorption capacity reached 8.4317mg/g.
- fresh calcium phosphate /
- gallic acid /
- adsorption kinetics /
- adsorption isotherm

HTML全文

参考文献(17)

[1]	霍汉镇.现代制糖化学与工艺学[M].北京:化学工业出版社, 2008:18-20.
[2]	Xu Q, Lu G J, Bian G D, et al.Calcium phosphate-gold nanoparticles nanocomposite for protein adsorption and mediatorfree H2O2biosensor construction[J].Materials Science and Engineering C, 2012, 32:470-477
[3]	Oniki T, Doi Y.ESR spectra of VO2+ions adsorbed on calcium phosphates[J].Calcified Tissue International, 1983, 35:538-541.
[4]	张雁, 李琳, 蔡妙颜, 等.磷酸钙沉淀在蔗糖溶液中吸附脱色规律的研究[J].郑州工程学院学报, 2001, 22 (1) :73-77.
[5]	张雁, 蔡妙颜, 李琳, 等.磷酸钙沉降和浮升吸附脱色效果的对比研究[J].广西大学学报:自然科学版, 1999, 24 (1) :41-44.
[6]	徐忠, 张亚丽.固相吸附剂在蔗糖溶液中的吸附特性研究[J].哈尔滨商业大学学报, 2001, 17 (3) :81-83.
[7]	徐卡秋, 徐家乐, 等.多孔活性磷酸钙悬浮聚合分散剂的制备及性能研究[J].四川大学学报:工程科学版, 2006, 38 (6) :73-78.
[8]	徐勇, 余世袁, 勇强, 等.新生磷酸钙对低聚木糖的脱色规律[J].食品科学, 2003, 24 (3) :19-22.
[9]	罗均, 葛静微, 杨晓波, 等.改性柚皮纤维素对Pb2+的吸附动力学研究[J].食品科学, 2010, 31 (3) :87-90.
[10]	Wang Y, Gao BY, Yue W W, et al.Adsorption kinetics of nitrate from aqueous solutions onto modied wheat residue[J].Colloids and Surfaces A, 2007, 308:1-5.
[11]	黄色燕, 刘云凤, 曹威, 等.改性稻草对Cr (Ⅵ) 的吸附动力学[J].环境化学, 2013, 32 (2) :240-248.
[12]	Xu X, Gao B Y, Wang W Y, et al.Adsorption of phosphate from aqueous solutions onto modified wheat residue:Characteristics, kinetic and column studies[J].Colloids and Surfaces B, 2009, 70 (1) :46-52.
[13]	魻zcan A S, 魻zcan A.Adsorption of acid dyes from aqueous solutions onto acid-activated bentonite[J].Journal of Colloid and Interfaces Science, 2004, 276 (1) :39-46.
[14]	Khaled A, Nemr A E, El-Sikaily A, et al.Removal of direct N Blue-106 from artificial textile dye effluent using activated carbon from orang peel:Adsorption isotherm and kinetic studies[J].Journal of Hazardous Materials, 2009, 165 (1/3) :100-110.
[15]	申禹, 李玲.天然水体中生物膜对磷的吸附动力学特征[J].环境科学学报, 2013, 33 (4) :1023-1027.
[16]	谢杰, 王哲, 吴德意, 等.表面活性剂改性沸石对水中酚类化合物吸附性能研究[J].环境科学, 2012, 33 (12) :4361-4365.
[17]	魻zcan A, 魻ncüE M, 魻zcan A S.Kinetics, isotherm and thermodynamic studies of adsorption of Acid Blue 193 from aqueous solutions onto natural sepiolite[J].Colloids and Surfaces A:2006, 277:90-97.