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| 废菌渣活性炭的制备及对废水中硝基苯的吸附 | |
| 引用本文： | 李红艳,严铁尉,崔建国,张峰,王芳,李尚明.废菌渣活性炭的制备及对废水中硝基苯的吸附[J].化工进展,2020,39(11):4702-4707. |
| 作者姓名： | 李红艳 严铁尉 崔建国 张峰 王芳 李尚明 |
| 作者单位： | 1.太原理工大学环境科学与工程学院，山西 晋中 030600;2.山西省市政工程研究生教育创新中心，山西 晋中 030600;3.山西省生物研究院有限公司食用菌研究中心，山西 太原 030006;4.太原理工大学材料科学与工程学院，山西 太原 030024 |
| 基金项目： | 山西省重点研发计划;人才培养项目;山西省科技成果转化引导专项 |
| 摘 要： | 以废菌渣为原料制备活性炭，采用能量-色散光谱（EDS）和傅里叶变换红外光谱仪（FTIR）进行表征，结果表明：活性炭表面具有多种官能团，有利于提高对硝基苯的吸附。并研究了活性炭吸附硝基苯的影响因素（pH、初始浓度、吸附时间、投加量）、吸附等温线及热力学。结果表明：在常温中性pH条件下，初始浓度为50mg/L，活性炭用量为0.15g时硝基苯去除率可达98%，出水水质满足《污水综合排放标准》（GB 8978－1996）中对硝基苯浓度低于2.0mg/L的要求。活性炭对硝基苯的吸附具有较快的吸附速率，即1min接近平衡。该吸附行为是自发放热反应，可以用Freundlich模型很好地拟合。废菌渣活性炭对硝基苯的吸附主要是疏水作用和氧化钼活化共同作用的结果。因此，以农业废弃物-废菌渣制备得到的废菌渣活性炭具有良好的经济实用性，可用于废水处理中，实现以废治废的目的。 |
| 关 键 词： | 废菌渣 活性炭 吸附 硝基苯 机理 |
Preparation of mushroom residue activated carbon and its adsorption mechanism of nitrobenzene in waste water |
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| LI Hongyan,YAN Tiewei,CUI Jianguo,ZHANG Feng,WANG Fang,LI Shangming.Preparation of mushroom residue activated carbon and its adsorption mechanism of nitrobenzene in waste water[J].Chemical Industry and Engineering Progress,2020,39(11):4702-4707. | |
| Authors: | LI Hongyan YAN Tiewei CUI Jianguo ZHANG Feng WANG Fang LI Shangming |
| Affiliation: | 1.College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong 030600, Shanxi, China 2.Shanxi Municipal Engineering Graduate Education Innovation Center, Jinzhong 030600, Shanxi, China 3.Research Center for Edible Fungi, Biological Institute of Shanxi Province, Taiyuan 030006, Shanxi, China 4.College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China |
| Abstract: | Mushroom residue as precursor was used to produce activated carbon. Using the energy-dispersion spectroscopy (EDS) and Fourier transform infrared spectrometer (FTIR) for characterization, the results reveal the surface of the activated carbon is rich in various functional groups to improve the adsorption of nitrobenzene. The factors affecting the adsorption of nitrobenzene (pH, initial concentration, adsorption time, and dosage of activated carbon), adsorption isotherms and thermodynamics were studied. The results show that the removal rate of nitrobenzene is as high as 98% under the conditions of neutral pH, normal temperature, the initial concentration 50mg/L and the activated carbon dosage 0.15g. The effluent water quality meets the requirement for the nitrobenzene concentration below 2.0mg/L in the Integrated Wastewater Discharge Standard (GB 8978－1996). In addition, the adsorption of nitrobenzene by activated carbon has a fast adsorption rate, which is close to equilibrium in 1min. The adsorption behavior is a spontaneous exothermic reaction, which can be well fitted by Freundlich model. The adsorption of nitrobenzene by mushroom residue activated carbon is mainly the result of the combined action of hydrophobicity and molybdenum oxide activation. Therefore, the mushroom residue activated carbon prepared from agricultural waste has a good economic practicality, and can be used in wastewater treatment to achieve the purpose of treating waste with waste. |
| Keywords: | mushroom residue activated carbon adsorption nitrobenzene mechanism |
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