改性NBC/CTS复合水凝胶珠的制备及对水溶液中孔雀石绿的吸附  

Adsorption of malachite green in aqueous solutions by modifiedrice husk NBC/CTS composite hydrogel bead

作　　者：于振琪 王睛 宋亚文 庞佳文 李晓东[2] YU Zhen-qi;WANG Jing;SONG Ya-wen;PANG Jia-wen;LI Xiao-dong(School of materials science and engineering,Jilin Jianzhu university,Changchun 130118,China;Department of basic science,Jilin Jianzhu university,Changchun 130118,China)

机构地区：[1]吉林建筑大学材料科学与工程学院,长春130118 [2]吉林建筑大学基础科学部,长春130118

出　　处：《吉林建筑大学学报》2022年第4期23-28,共6页Journal of Jilin Jianzhu University

摘　　要：以稻壳和壳聚糖为原料,制备了毫米级改性稻壳生物炭/壳聚糖复合水凝胶球(NBC/CTS)吸附剂.利用扫描电子显微镜(SEM)和傅里叶变换红外光谱(FT-IR)表征了样品的微观形貌和结构.NBC/CTS通过化学作用吸附孔雀石绿(MG).吸附过程可以用伪二阶动力学和Langmuir等温线模型来描述.NBC/CTS对MG的吸附效率优于活性炭颗粒(ACp),其最大吸附量为99.18 mg/g是ACp的5.89倍.该吸附剂能循环回收利用且回收率接近100%.Modified rice husk biochar/chitosan composite hydrogel bead(NBC/CTS)at millimeter scale were synthesized by rice husk and chitosan.The micro morphology and structure of the samples were characterized bySEMandFT-IR.NBC/CTS adsorbs malachite green(MG)by chemicalaction.The adsorption process can be described by pseudo-second-order kinetic and Langmuir isotherm models.The adsorption efficiency of NBC/CTS for MG is better than that of activated carbon particles(ACP),and its maximum adsorption capacity is 99.18 mg/g,which is 5.89 times that of ACP.The adsorbent can be recycled and the recovery rate is close to 100%.

关 键 词：生物炭/壳聚糖 水凝胶珠 孔雀石绿 吸附 活性炭颗粒 

分 类 号：X703[环境科学与工程—环境工程]