CAJ | 학술논문

将橘子皮经氢氧化钠和氯化钙处理,得到改性橘子皮生物吸附剂(sCoP).用红外光谱(IR)、扫描电镜(SEM)和N2-吸附法对其形貌和特性进行表征；通过静态吸附实验,研究pH、起始金属离子浓度等因素对改性橘子皮SCOP吸附Cu2+、Pb2+和Zn2+的影响.等温吸附结果表明,SCOP对Cu2+、pb2+和Zn2+的吸附符合Langmuir方程,根据Langmuir方程计算的SCOP对Cu2+、Pb2+和Zn2+的饱和吸附量分别为70.73,209.8和56.18 mg/g.根据静态吸附实验结果,用动态柱吸附实现了水溶液中pb2+和Zn2+的分离.吸附过程中离子交换发生了重要作用,重金属离子与吸附剂中的Ca2+离子发生离子交换.
장귤자피경경양화납화록화개처리,득도개성귤자피생물흡부제(sCoP).용홍외광보(IR)、소묘전경(SEM)화N2-흡부법대기형모화특성진행표정；통과정태흡부실험,연구pH、기시금속리자농도등인소대개성귤자피SCOP흡부Cu2+、Pb2+화Zn2+적영향.등온흡부결과표명,SCOP대Cu2+、pb2+화Zn2+적흡부부합Langmuir방정,근거Langmuir방정계산적SCOP대Cu2+、Pb2+화Zn2+적포화흡부량분별위70.73,209.8화56.18 mg/g.근거정태흡부실험결과,용동태주흡부실현료수용액중pb2+화Zn2+적분리.흡부과정중리자교환발생료중요작용,중금속리자여흡부제중적Ca2+리자발생리자교환.
A novel adsorbent was prepared by modifying orange peel with sodium hydroxide and calcium chloride.The morphological and characteristics of the adsorbent were evaluated by infrared spectroscopy (IR),scanning electron microscopy (SEM) and N2-adsorption techniques.The adsorption behavior of Cu2+,Pb2+ and Zn2+ on modified orange peel (SCOP) was studied by varying parameters like pH,initial concentration of metal ions.Equilibrium was well described by Langmuir equation with the maximum adsorption capacities for Cu2+,Pb2+ and Zn2+ of 70.73,209.8 and 56.1 8 mg/g,respectively.Based on the results obtained in batch experiments,breakthrough profiles were examined using a column packed with SCOP for the separation of small concentration of Pb2+ from an excess of Zn2+ followed by elution tests.Ion exchange with Ca2+ neutralizing the carboxyl groups of the pectin was found to be the predominant mechanism.