粉末活性炭对甲基托布津吸附的影响因素

Influencing Factors on Adsorption of Thiophanate-Methyl by Powdered Activated Carbon

针对广谱性农药甲基托布津,对三种粉末活性炭进行对比试验,研究表明,竹质炭吸附去除甲基托布津的效果最佳。因此,着重研究了竹质粉末活性炭吸附甲基托布津的影响因素,如粉末活性炭投加量、温度、PH值、水质等,发现投加量增加和低温有利于吸附的进行,吸附效果随原水pH值的升高而降低,原水水体中天然有机物的存在竞争吸附。

Adsorption and removal of the broad-spectrum pesticide thiophanate-methyl was carried out by comparing experiment with three kinds of powdered activated carbon.Result showed that the absorption effect of bamboo charcoal was the best.Therefore,the influencing factors on adsorption of thiophanate-methyl on bamboo powder activated carbon,such as the dosage,temperature,pH value and water quality were investigated.It was found that the increase of dosage and lower temperature are positive to the abosorp-tion,higher pH value of raw water is negative to the absorption,presence of natural organic matter in raw water has competitive adsorption to thiophanate-methyl.