磁性生物炭去除水溶液中的污染物:一个小回顾

IF 2.3 4区 工程技术 Q3 ENGINEERING, CHEMICAL
Jalil Kermannezhad, Hassan TorabiPoodeh, Elham Ghanbari-Adivi, Babak ShahiNezhad
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引用次数: 0

摘要

摘要在过去的十年中,利用生物炭去除废水中的污染物受到越来越多的关注。然而,由于生物炭的粒度和吸附过程后的分离难度,这些吸附剂的使用一直是一个挑战,直到有研究人员提出磁性生物炭(MB)。MB的生产分为热解前法和热解后法。研究了物理、化学活化/氨化、硫化、氧化、聚合和无改性/活化制备MB的方法。本研究综述了一步加热后热解法制备MB的研究进展。结果表明,不同MB对铅、镉、铬、铜和砷的去除率分别为96.9、91.2、90.5、97.6和55.42%。在本研究中,磁性组分与生物炭的重量比为1.2 (g/g),炭化温度为575℃,炭化时间为130 min。在吸附过程中,磁性生物炭的吸附量逐渐增大,达到一个恒定值。因此,磁性生物炭具有良好的将吸附污染物保持到处理结束的能力。此外,随着初始污染物浓度的增加,磁性生物炭的吸附量意外增加,并最终达到最大值,表明磁性生物炭对污染物具有较高的亲和力。关键词:活性炭吸附磁性生物炭生物质碳化感谢本组织的支持。披露声明作者未报告潜在的利益冲突。本研究由伊朗Lorestan的Lorestan大学资助。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Removal of pollutants from aqueous solution with magnetic biochar: a mini review
AbstractIn the last decade, there has been increasing scrutiny of using biochar to remove pollutants from the waste water. However, due to particle size of biochar and the difficulty of its separation after the adsorption process, the use of these adsorbents has always been a challenge, until magnetic biochar (MB) was proposed by researchers. The production of MB is divided into pre-pyrolysis and post- pyrolysis methods. The MB activation/modification methods included physical and chemical activation/ammonization, sulfurization, oxidation, polymerization and MB production without modification/activation was investigated. In this research, studies that produced MB as a one-step heating and post-pyrolysis method reviewed. The results showed that the capacity of different MB to remove lead, cadmium, chromium, copper, and arsenic was calculated to be 96.9, 91.2, 90.5, 97.6 and 55.42%, respectively. In these studies, the weight ratio of the magnetic fraction to biochar, temperature, and carbonization time were 1.2 (g/g), 575 °C, and 130 min, respectively. During the absorption process, the adsorption capacity of magnetic biochar increased and then reached a constant value. Therefore, the magnetic biochar has good ability to hold the adsorbed pollutants to the end of process. Also, as the initial pollutant concentration increased, the adsorption capacity unexpectedly increased and eventually reached its maximum, indicating a high affinity of the magnetic biochar with the pollutants.Keywords: Activated carbonadsorptionmagneticbiocharbiomasscarbonization AcknowledgmentsThe support of this organization is appreciated.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis study was funded by the University of Lorestan, Lorestan, Iran.
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来源期刊
Particulate Science and Technology
Particulate Science and Technology 工程技术-工程:化工
CiteScore
4.40
自引率
4.00%
发文量
86
审稿时长
12 months
期刊介绍: Particulate Science and Technology, an interdisciplinary journal, publishes papers on both fundamental and applied science and technology related to particles and particle systems in size scales from nanometers to millimeters. The journal''s primary focus is to report emerging technologies and advances in different fields of engineering, energy, biomaterials, and pharmaceutical science involving particles, and to bring institutional researchers closer to professionals in industries. Particulate Science and Technology invites articles reporting original contributions and review papers, in particular critical reviews, that are relevant and timely to the emerging and growing fields of particle and powder technology.
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