采用紫外分光光度法测试水溶液体系中聚羧酸超塑化剂(polycarboxylate superplasticizer,简称PCE)在铝酸三钙(C3A)水化产物(C3AH6)上的吸附量,研究了聚羧酸初始浓度、分散时间、环境温度以及SO42-对吸附量的影响.采用准一级动力学模型、准二级动力学模型和颗粒内扩散模型进行动力学模拟,结果表明,C3AH6对PCE的吸附过程符合准二级动力学模型.利用Langmiur、Freundlich和Temkin等温吸附模型进行拟合,发现C3AH6对PCE的吸附规律符合Freundlich方程.红外光谱分析表明PCE在C3AH6上的吸附为化学吸附.
参考文献
| [1] | 廖国胜,潘会,肖煜.浅析聚羧酸高效减水剂与水泥的适应性问题[J].工程建设与设计,2012(05):173-176. |
| [2] | 李宪军,张相胜.浅析水泥与减水剂的适应性问题[J].山西建筑,2008(33):169-170. |
| [3] | Johann Plank;Dai Zhimin;Helena Keller .Fundamental mechanisms for polycarboxylate intercalation into C_3A hydrate phases and the role of sulfate present in cement[J].Cement and Concrete Research,2010(1):45-57. |
| [4] | H. Y. Ghorab;I. M. Kenawi;Z. G. Abdel All .Interaction between cements with different composition and superplasticizers[J].Materiales de Construccion,2012(TN.307):359-380. |
| [5] | 陈红霞 .水泥熟料矿物的溶胶—凝胶法制备及其水化研究[D].同济大学,2003. |
| [6] | 常玥,柳宏伟,吕学谦,任小宁,陈虎魁,查飞,郝亚东.蒙脱土/聚丙烯硫脲复合材料对铬（VI）吸附行为[J].硅酸盐通报,2010(05):1226-1230,1245. |
| [7] | 王金明,易发成.浙江天然沸石对Cs+的吸附性能研究及其晶体结构表征[J].硅酸盐通报,2010(03):670-675,685. |
| [8] | Chang MY;Juang RS .Adsorption of tannic acid, humic acid, and dyes from water using the composite of chitosan and activated clay[J].Journal of Colloid and Interface Science,2004(1):18-25. |
| [9] | Gregorio Crini;Harmel Ndongo Peindy;Frederic Gimbert .Removal of C.I.Basic Green 4 (Malachite Green)from aqueous solutions by adsorption using cyclodextrin-based adsorbent:Kinetic and equilibrium studies[J].Separation and Purification Technology,2007(1):97-110. |
| [10] | Rajeshwari Sivaraj;C. Namasivayam;K. Kadirvelu .Orange peel as an adsorbent in the removal of Acid violet 17 (acid dye) from aqueous solutions[J].Waste Management,2001(1):105-110. |
| [11] | 刘涉江,李鑫钢,姜斌.膨胀珍珠岩对甲基叔丁基醚的吸附动力学和热力学探讨[J].天津大学学报,2008(04):499-503. |
| [12] | Doulia, D.;Leodopoulos, Ch.;Gimouhopoulos, K.;Rigas, F. .Adsorption of humic acid on acid-activated Greek bentonite[J].Journal of Colloid and Interface Science,2009(2):131-141. |
| [13] | 蔡苇,崔鸿越,郭桂珍,赵贵哲,孙友谊,韩涛,刘亚青.侧链结构对聚羧酸盐减水剂性能的影响[J].硅酸盐通报,2011(04):800-804. |
| [14] | Geffroy C.;Foissy A.;Persello J.;Cabane B. .Surface complexation of calcite by carboxylates in water[J].Journal of Colloid and Interface Science,1999(1):45-0. |
| [15] | 郭清春,王智,党玉栋,王应.减缩剂与减水剂在水泥及掺合料固体颗粒表面吸附性比较[J].硅酸盐通报,2011(05):1136-1141. |
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