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首页> 外文期刊>Journal of Hazardous Materials >Fabrication and environmental applications of multifunctional mixed metal-biochar composites (MMBC) from red mud and lignin wastes
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Fabrication and environmental applications of multifunctional mixed metal-biochar composites (MMBC) from red mud and lignin wastes

机译：用赤泥和木质素废料制造多功能混合金属-生物炭复合材料（MMBC）及其环境应用

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摘要

This study fabricated a new and multifunctional mixed metal-biochar composites (MMBC) using the mixture of two abundant industrial wastes, red mud (RM) and lignin, via pyrolysis under N(2 )atmosphere, and its ability to treat wastewater containing various contaminants was comprehensively evaluated. A porous structure (BET surface area = 100.8 m(2) g(-1)) was created and metallic Fe was formed in the MMBC owing to reduction of Fe oxides present in RM by lignin decomposition products during pyrolysis at 700 degrees C, which was closely associated with the transformation of liquid to gaseous pyrogenic products. The potential application of the MMBC was investigated for the removal of heavy metals (Pb(II) and Ni(II)), oxyanions (As(V) and Cr(VI)), dye (methylene blue), and pharmaceutical/personal care products (para-nitrophenol and pCBA). The aluminosilicate mineral, metallic Fe, and porous carbon matrix derived from the incorporation of RM and lignin contributed to the multifunctionality (i.e., adsorption, chemical reduction, and catalytic reaction) of the MMBC. Thus, engineered biochar composites synthesized from selected industrial wastes can be a potential candidate for environmental applications.
机译：这项研究使用两种丰富的工业废料，即赤泥和木质素，通过在N（2）气氛下热解，制备了一种新型的多功能金属-生物炭复合材料（MMBC），并具有处理各种污染物的能力。经过全面评估。形成了多孔结构（BET表面积= 100.8 m（2）g（-1）），由于在700℃热解过程中木质素分解产物导致RM中的Fe氧化物还原，MMBC中形成了金属Fe。与液态向气态热解产物的转化密切相关。对MMBC的潜在应用进行了研究，以去除重金属（Pb（II）和Ni（II）），氧阴离子（As（V）和Cr（VI）），染料（亚甲蓝）以及药物/个人护理产品（对硝基苯酚和pCBA）。由RM和木质素的掺入得到的铝硅酸盐矿物，金属Fe和多孔碳基质有助于MMBC的多功能性（即吸附，化学还原和催化反应）。因此，从选定的工业废物中合成的工程生物炭复合材料可能成为环境应用的潜在候选者。

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  • 来源
    《Journal of Hazardous Materials》 |2019年第15期|412-419|共8页
  • 作者

    Cho Dong-Wan; Yoon Kwangsuk; Ahn Yongtae; Su Yuqing; Tsang Daniel C. W.; Hou Deyi; Ok Yong Sik; Son Hocheol;

  • 作者单位

    Korea Inst Geosci & Mineral Resources, Geol Environm Div, 124 Gwahak Ro, Daejeon 34132, South Korea;

    Sejong Univ, Dept Environm & Energy, Seoul 05006, South Korea;

    Korea Inst Sci & Technol, Ctr Environm Hlth & Welf Res, Seoul 02792, South Korea;

    Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Hong Kong, Peoples R China;

    Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Hong Kong, Peoples R China;

    Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China;

    Korea Univ, OJERI, Div Environm Sci & Ecol Engn, Seoul, South Korea;

    Sejong Univ, Dept Environm & Energy, Seoul 05006, South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Waste biomass valorization; Bauxite residue; Syngas production; Engineered biochar; Metallic iron-carbon composites;

    机译：废物生物质增值;铝土矿渣;合成气;工程生物炭;金属铁碳复合材料;

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