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磁性生物质炭制备方法及其对水体Pb2+吸附特性的影响

沈玲芳 董隽 单胜道 舒婉君

沈玲芳, 董隽, 单胜道, 舒婉君. 磁性生物质炭制备方法及其对水体Pb2+吸附特性的影响[J]. 环境工程, 2021, 39(9): 48-55. doi: 10.13205/j.hjgc.202109008
引用本文: 沈玲芳, 董隽, 单胜道, 舒婉君. 磁性生物质炭制备方法及其对水体Pb2+吸附特性的影响[J]. 环境工程, 2021, 39(9): 48-55. doi: 10.13205/j.hjgc.202109008
SHEN Ling-fang, DONG Jun, SHAN Sheng-dao, SHU Wan-jun. INFLUENCE OF MAGNETIC BIOCHAR PREPARATION METHODS ON ADSORPTION CHARACTERISTICS OF Pb2+ IN WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(9): 48-55. doi: 10.13205/j.hjgc.202109008
Citation: SHEN Ling-fang, DONG Jun, SHAN Sheng-dao, SHU Wan-jun. INFLUENCE OF MAGNETIC BIOCHAR PREPARATION METHODS ON ADSORPTION CHARACTERISTICS OF Pb2+ IN WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(9): 48-55. doi: 10.13205/j.hjgc.202109008

磁性生物质炭制备方法及其对水体Pb2+吸附特性的影响

doi: 10.13205/j.hjgc.202109008
基金项目: 

十三五国家重点研发计划项目"高吸附性能专用活性炭制备技术研究"(2017YFD0601006)。

详细信息
    作者简介:

    沈玲芳(1997-),女,硕士研究生,主要研究方向为废弃生物质资源化利用、生物质炭制备及污染水体修复。765286822@qq.com

    通讯作者:

    董隽(1988-),女,博士,主要研究方向为废弃生物质资源化利用、生物质炭制备及污染水体修复。jundongzjhz@126.com

INFLUENCE OF MAGNETIC BIOCHAR PREPARATION METHODS ON ADSORPTION CHARACTERISTICS OF Pb2+ IN WASTEWATER

  • 摘要: 为了获得兼具磁分离和优良吸附性能的环境友好型吸附材料,以杉木(FW)为原材料制备生物质炭(FWBC),分别用沉淀法、浸渍法制得磁性生物质炭FWFe(2)、FWFe(3)。通过元素分析、磁性分析、SEM-EDS、XRD、FTIR等手段表征生物质炭吸附前后特性。研究了FWFe(2)、FWFe(3)对水中Pb2+的吸附特性,探讨了2种磁化方法吸附Pb2+的机理。结果表明:磁化后的生物质炭含有Fe3O4颗粒。FWFe(2)和FWFe(3)的饱和磁化强度分别为35.59,27.76 emu/g,具有良好的磁分离能力。FWFe(2)、FWFe(3)吸附Pb2+的过程符合准二级动力学和Langmuir等温吸附模型。FWFe(2)的吸附性能明显优于FWFe(3)和FWBC,平衡吸附量达到817.64 mg/g,是FWBC的12倍。采用沉淀法磁化的生物质炭可有效提高对水体Pb2+的吸附。吸附机理主要包括离子交换和金属(氢)碳酸盐共沉淀、物理吸附、与表面官能团的络合反应。研究结果有利于推进农林废弃生物质的资源化利用及磁性生物质炭在环境中的实际应用。
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出版历程
  • 收稿日期:  2020-12-22
  • 网络出版日期:  2022-01-21

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