李娜,胡凤哲.造纸污泥基纳米复合材料的制备及其对废水中重金属的吸附[J].中国造纸学报,2023,38(2):109-113 |
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造纸污泥基纳米复合材料的制备及其对废水中重金属的吸附 |
Preparation of Papermaking Sludge-based Nanocomposite and Its Adsorption on Heavy Metals in Wastewater |
投稿时间:2023-02-13 |
DOI:10.11981/j.issn.1000-6842.2023.02.109 |
中文关键词: 造纸污泥 壳聚糖 重金属吸附 Cd2+ Pb2+ |
Key Words:papermaking sludge chitosan heavy metal adsorption Cd2+ Pb2+ |
基金项目:玉林师范学院2022年度博士启动项目“TiO2改性光催化剂的制备及其对印染废水的处理研究”(项目编号:G2022ZK22)。 |
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中文摘要: |
利用造纸污泥与壳聚糖制备造纸污泥-壳聚糖(SL-CSA)纳米复合吸附材料,研究了SL-CSA纳米复合材料对废水中铬离子(Cd2+)和铅离子(Pb2+)的吸附性能。通过傅里叶变换红外光谱仪(FT-IR)和扫描电子显微镜(SEM)表征证明了复合材料的成功制备。吸附实验表明,SL-CSA纳米复合材料对Cd2+和Pb2+的吸附均遵循准二级动力学方程,属于化学吸附。根据Langmuir模型,SL-CSA纳米复合材料对Cd2+和Pb2+的最大吸附量分别为314.05 mg/g和320.06 mg/g。 |
Abstract: |
Papermaking sludge-chitosan (SL-CSA) nanocomposite adsorption material was prepared by using papermaking sludge and chitosan. The adsorption properties of SL-CSA nanocomposite material on chromium ion (Cd2+) and lead ion (Pb2+) in wastewater were studied. FT-IR and SEM characterizations proved that the nanocomposite was prepared successfully. The adsorption experiments showed that the adsorptions on Cd2+ and Pb2+ by SL-CSA nanocomposite material conformed to the pseudo-second-order kinetic equation, which was a chemical-adsorption process. According to Langmuir model, the maximum adsorption capacities of Cd2+ and Pb2+ by SL-CSA nanocomposite were 314.05 and 320.06 mg/g, respectively. |
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