柚子皮生物吸附剂化学改性及其对Pb2+吸附性能的研究

Study on Chemical Modification Synthesis of Biosorbent from Pomelo Peel and Its Adsorption Performance for Pb2+

以废弃物柚子皮作为原材料,分别制备了未改性的柚子皮吸附剂、碱改性柚子皮吸附剂和疏基乙酸改性柚子皮吸附剂。比较它们对铅离子的吸附效率,并通过比较各种因素对吸附剂吸附铅离子效果的影响,得出最佳的吸附条件:温度为45℃、pH为4的巯基乙酸改性柚子皮吸附能力最佳。

In this study, pomelo peel, an agricultural and forestry waste, was selected as raw material to prepare unmodified pomelo peel adsorbent, alkali modified pomelo peel adsorbent and sparse acetic acid modified pomelo peel adsorbent respectively.The adsorption efficiency of these adsorbents for lead ion was compared.By comparing the effects of various factors on the adsorption efficiency of the adsorbent for lead ion, the optimum adsorption conditions were obtained: mercapto at 45 C and pH 4.Grapefruit peel modified by acetic acid has the best adsorption capacity.