Ayranci Erol, Hoda Numan
Chemistry Department, Akdeniz University, P.O. Box 510, Antalya 07058, Turkey.
J Hazard Mater. 2004 Aug 9;112(1-2):163-8. doi: 10.1016/j.jhazmat.2004.05.002.
The removal of pesticides such as metribuzin, bromacil, 2,4-d and atrazine from aqueous solutions was studied by adsorption on high area carbon cloth. The adsorption process was followed by in situ UV-spectrophotometric technique in a specially designed adsorption cell. Spectroscopic data of the pesticides were determined in separate experiments. The extent of adsorption was quantified by calculating the amount of adsorbate adsorbed per unit area of the carbon cloth and the percentage coverage at the carbon-cloth surface. The order of extent of adsorption of the pesticides studied was found as metribuzin < 2,4-D < bromacil < atrazine. The adsorption process was found to follow a first-order kinetics and the rate constants were determined. The competitive adsorption of pesticides was also examined by carrying out the adsorption process from a solution of equimolar mixture of bromacil and metribuzin.
通过在高比表面积碳布上吸附，研究了从水溶液中去除嗪草酮、除草定、2,4 - D和莠去津等农药的过程。在专门设计的吸附池中，采用原位紫外分光光度技术跟踪吸附过程。在单独的实验中测定了农药的光谱数据。通过计算每单位面积碳布吸附的吸附质数量和碳布表面的覆盖百分比来量化吸附程度。研究发现，所研究农药的吸附程度顺序为嗪草酮＜2,4 - D＜除草定＜莠去津。发现吸附过程遵循一级动力学，并测定了速率常数。还通过从除草定和嗪草酮等摩尔混合物溶液中进行吸附过程，研究了农药的竞争吸附。
