【摘要】：通過浮石負載殼聚糖制備了吸附劑殼聚糖/浮石復合物,采用掃描電子顯微鏡(SEM)、熱重分析(TGA)、元素分析、傅里葉紅外光譜(FT-IR)、X射線衍射(XRD)和X射線熒光光譜(XRF)等技術手段表征了吸附劑性質,考察了吸附劑量、吸附時間、溶液pH值、離子強度和溫度對該吸附劑吸附去除水中丙溴磷的影響,研究了再生吸附劑的吸附性能。結果表明,負載在浮石上的殼聚糖占吸附劑總量的8.69%;在p H值3.0~7.0內,殼聚糖/浮石對丙溴磷的吸附率大于90%;這種吸附劑對丙溴磷的吸附受溶液離子強度影響較小,隨溫度升高而稍微減小。在溶液溫度25℃、pH=7.0、丙溴磷濃度40 mg/L、殼聚糖/浮石劑量為0.7 g/L和吸附平衡時間為90 min條件下,此吸附劑對丙溴磷最大吸附率為93.3%(最大吸附量為53.4 mg/g)。殼聚糖/浮石連續(xù)經過3次吸附/再生循環(huán),每次循環(huán)對丙溴磷的吸附率下降約12%�？梢姎ぞ厶�/浮石通過吸附可有效地去除水中的農藥丙溴磷。
[Abstract]:The adsorbent chitosan / pumice complex was prepared by using pumice loaded chitosan. Scanning electron microscopy (SEM) (SEM), thermogravimetric analysis (TGA) was used to analyze (TGA), elements. Fourier transform infrared spectroscopy (FT-IR) X-ray diffraction (XRD) and X-ray fluorescence spectroscopy (XRF) were used to characterize the properties of the adsorbent. The amount of adsorbent, the adsorption time and the pH value of the solution were investigated. The effect of ion strength and temperature on the adsorption and removal of propyl phosphate in water was studied. The adsorption properties of regenerated adsorbent were studied. The results showed that chitosan loaded on pumice accounted for 8.69% of the total adsorbent, and the adsorption rate of propyl bromide on chitosan / pumice was more than 90% within pH value 3.0 ~ 7.0, and the adsorption of propyl bromide by this adsorbent was less affected by the ionic strength of solution. It decreases slightly with the increase of temperature. Under the conditions of pH = 7.0 at 25 鈩，

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