玉米芯生物炭对苯酚的吸附特性研究

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英文篇名：Adsorption characteristics of corncob biochar for phenol 作者：张娱 ; 陈琦 ; 唐志书 ; 刘世军 ; 宋忠兴 英文作者：Zhang Yu;Chen Qi;Tang Zhishu;Liu Shijun;Song Zhongxing;Shaanxi University of Chinese Medicine,Shaanxi Collaborative Innovation Center of Chinese Medicinal Resource Industrialization;Shaanxi Province Key Laboratory of New Drugs and Chinese Medicine Foundation Research;Shaanxi Rheumatism and Tumor Center of TCM Engineering Technology Research; 关键词：生物炭 ; 玉米芯 ; 苯酚 ; 吸附作用 英文关键词：biochar;;corncob straw;;phenol;;adsorption 中文刊名：HCXV 英文刊名：China Synthetic Fiber Industry 机构：陕西中医药大学陕西省中药资源产业化协同创新中心;陕西省中药基础与新药研究重点实验室;陕西省风湿与肿瘤类中药制剂工程技术研究中心; 出版日期：2019-02-15 出版单位：合成纤维工业 年：2019 期：v.42;No.243 基金：国家自然科学基金项目(51679085);; 陕西中医药大学科研基金项目(2015PY10) 语种：中文; 页：HCXV201901007 页数：4 CN：01 ISSN：43-1139/TQ 分类号：21-23+29

摘要

为促进玉米芯的资源化利用,以玉米芯为材料,采用慢速热解技术于300,400,500℃条件下制备玉米芯生物炭吸附剂(BC300,BC400,BC500),检测其去除水中苯酚的效果。吸附实验结果表明:生物炭的制备温度显著影响其对苯酚的吸附效果,3种温度制备的生物炭对苯酚的吸附能力由大到小依次为BC500,BC400,BC300;废水中苯酚的初始浓度、吸附温度和时间等因素均能影响吸附效果。25℃下苯酚初始浓度为20 mg/L时,BC500对苯酚的去除率可高达98%。
        The corncob straw was used as raw material to prepare biochar adsorbents( BC300,BC400 and BC500) at 300,400 and 500 ℃ by slow pyrolysis in order to promote the resource utilization. The removal efficiency of phenol by the corncob biochars was detected in water. The adsorption experimental results showed that the preparation temperature of biochar significantly affected its adsorption efficiency for phenol; the adsorption capacity of three kinds of biochar for phenol was in the order of BC500,BC400 and BC300 from high to low; the adsorption efficiency was also affected by the initial concentration of phenol in waste water and the adsorption temperature and time; and the removal rate of phenol by BC500 was up to 98% when the initial concentration of phenol was 20 mg/L and the adsorption temperature was 25 ℃.

引文

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