研究报告
王卓行,周晓馨,楼子墨,刘榆,傅瑞琪,徐新华.病死猪热解炭化物的特性及其对水中Cu2+的去除[J].环境科学学报,2016,36(8):2885-2892
病死猪热解炭化物的特性及其对水中Cu2+的去除
- Characterizations of dead pigs' carbonization material and its application for Cu2+ removal from aqueous solutions
- 基金项目：国家水体污染控制与治理科技重大专项（No.2014ZX07101-012-04）
- 作者
- 单位
- 王卓行
- 浙江大学环境工程系, 杭州 310058
- 周晓馨
- 浙江大学环境工程系, 杭州 310058
- 楼子墨
- 浙江大学环境工程系, 杭州 310058
- 刘榆
- 浙江大学环境工程系, 杭州 310058
- 傅瑞琪
- 浙江大学环境工程系, 杭州 310058
- 徐新华
- 浙江大学环境工程系, 杭州 310058
- 摘要：研究了病死猪热解炭化物对水中Cu2+的去除效果，并借助扫描电子显微镜、X射线光谱仪及傅里叶红外光谱仪等分析手段对病死猪热解得到的炭化物理化学性质进行了表征，分析了其微观结构及官能团.结果发现，病死猪热解炭化物内部具有大量孔状结构，表面出现了PO43-等结构.最后，利用热解得到的炭化物对水中的Cu2+进行处理研究，考察了初始pH值、反应温度、吸附时间等对水中Cu2+去除效果的影响.结果表明，病死猪热解炭化物对水中Cu2+的吸附效果较好，最佳初始pH值为5.0，温度的升高有利于热解炭化物对Cu2+的去除.通过对实验数据进行动力学及吸附等温线分析，发现实验中使用的病死猪热解炭化物对Cu2+的吸附动力学数据符合准二级吸附动力学方程，Langmuir模型能较好地描述Cu2+在猪热解炭化物上的吸附行为.
- Abstract：In the present study, dead pig pyrolysis carbonization material (PPCM) for the adsorptive removal of Cu2+ from aqueous solutions was investigated. PPCM was characterized using various techniques including scanning electron microscopy (SEM), X-ray energy dispersion spectrometry (XRD) and Fourier transform infrared spectrometry (FTIR). Influences of several experimental parameters, such as initial pH, temperature, and adsorption time for the removal of Cu2+ from aqueous solutions using PPCM were investigated. The Characterization analyses revealed the presences of large number of pores and PO43- functional groups on the carbonization material's surface. Results demonstrated that the optimal initial pH value for the removal Cu2+ was about 5.0, and high temperature favored Cu2+ removal from aqueous solutions. In addition, adsorption kinetics, isotherms and thermodynamics were applied to the adsorption data, and good correlation coefficients were obtained for the pseudo-second-order kinetics models. The Langmuir isotherm model fitted well with the experimental data of Cu2+ removal using PPCM. Findings from this study suggested that the application of dead PPCM can be useful for removal of Cu2+ from water environments and considered to be an environment-friendly process.
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