【摘要】 通过ZnCl₂活化法制备出废菌渣活性炭（MRAC）,采用扫描电镜、能量-色散光谱、傅立叶变换红外光谱仪对其进行了表征分析,并研究了去除水中Cr（Ⅵ）的性能。结果表明,MRAC具有较好去除水中Cr（Ⅵ）的性能;在温度25℃、pH为7、MRAC投加量0.5 g、反应时间120 min、50 mL的Cr（Ⅵ）溶液初始质量浓度50 mg/L的优化条件下,MRAC对Cr（Ⅵ）的去除率高达99.98%,处理后的水满足GB 8978-1996中对Cr（Ⅵ）含量的要求。MRAC对水中Cr（Ⅵ）的吸附服从Langmuir等温方程（最大吸附量31.55 mg/g）,吸附反应具有吸热性及自发性。与其他活性炭相比,MRAC去除废水Cr（Ⅵ）的效果更佳,具有较好的经济效益和环境效益。更多还原

【Abstract】 Mushroom residue activated carbon（MRAC） was prepared by ZnCl₂ activation method, the MRAC was characterized by SEM, BET, EDS and FT IR, and the performance of MRAC for Cr（Ⅵ） removal in water was studied. The results showed that, MRAC had a better removal efficiency of Cr（Ⅵ）in water. Under the optimal reaction conditions of temperature, pH, MRAC dosage, reaction time and initial mass concentration of 50 m L Cr（Ⅵ） solution was 25 ℃, 7, 0.5 g, 120 min and 50 mg/L respectively, the removal rate of Cr（Ⅵ） by MRAC was as high as 99.98%, treated water met the requirement of GB 8978-1996 for Cr（Ⅵ） content. Cr（Ⅵ） adsorption on MRAC was in accordance with Langmuir isotherm（qm=31.55 mg/g）, the adsorption reaction was endothermic and spontaneous. Compared with other activated carbon, MRAC is more effective for Cr（Ⅵ） removal in wastewater, and MRAC has better economic and environmental benefits.更多还原