硅锰复合物的制备及其对铜的吸附性能-《电镀与精饰》

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Title:: Preparation of Si-Mn Bimetal Adsorbent and Its Adsorption Characteristics of Copper

摘要:: 采用共沉淀法制备了硅锰复合物吸附剂,并对其吸附金属铜的性能进行了初步研究。用Fourier红外光谱对制备的硅锰复合物吸附剂进行了表征,探讨了吸附剂的投加量、p H、温度和震荡时间等因素对土壤中铜的吸附性能的影响。结果表明,当土壤溶液的p H为5.5、土壤溶液中铜离子的初始浓度为0.8 mmol/L,θ为25℃,震荡2 h时,土壤对铜的吸附效果最佳,最大吸附量为21.59 mg/g,吸附模型符合Freundlich吸附等温线。

Abstract:: Si-Mn Bimetal Adsorbent( SMB) for copper adsorption was prepared by co-precipitation method,characteristics and adsorption properties of the adsorbent were studied in preliminary. The obtained SMB was characterized by Fourier transform infrared spectroscopy,and influences of SMB dosage,p H value,temperature and shock time on cupper adsorption capacity were investigated. Results showed that when the p H of soil solution was 5. 5,initial concentration of copper ion was 0. 8 mmol / L,temperature was 25 ℃and shock time was 2 h,the soil had the best adsorption effect and the maximum adsorption capacity was21. 59 mg / g,this adsorption model followed the Freundlich adsorption isotherm.