不同温度热解提取海藻色素后生物炭对染料的高效吸附
Highly efficient adsorption of dyes by biochar derived from pigments-extracted macroalgae pyrolyzed at different temperature.
机构信息
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China.
Graduate Institute of Biotechnology, Chinese Culture University, Taipei 1114, Taiwan.
出版信息
Bioresour Technol. 2018 Jul;259:104-110. doi: 10.1016/j.biortech.2018.02.094. Epub 2018 Feb 23.
Biochar is known to efficiently adsorb dyes from wastewater. In this study, biochar was derived from macroalgae residue by pyrolysis, and the influence of varying temperature (from 400 °C to 800 °C) on biochar characteristics was investigated. Among the biochar samples tested, macroalgae-derived biochar possessing highly porous structure, special surface chemical behavior and high thermal stability was found to be efficient in removing malachite green, crystal violet and Congo red. The biochar derived by pyrolysis at 800 °C showed the highest adsorption capacity for malachite green (5306.2 mg g). In this study, the transformation of microalgae residue into a highly efficient dye adsorbent is a promising procedure for economic and environmental protection.
生物炭已被证实能有效地从废水中吸附染料。在这项研究中，生物炭是由海藻残渣通过热解得到的，并研究了不同温度（400°C 至 800°C）对生物炭特性的影响。在所测试的生物炭样品中，具有高度多孔结构、特殊表面化学行为和高热稳定性的海藻衍生生物炭被发现能有效地去除孔雀石绿、结晶紫和刚果红。在 800°C 下热解得到的生物炭对孔雀石绿的吸附容量最高（5306.2mg/g）。在本研究中，将微藻残渣转化为高效染料吸附剂是一种具有经济和环保意义的方法。
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