铁氧体多孔密闭生物炭纳米反应器对铅、镉吸附和解吸的影响

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-04-28 DOI:10.1016/j.jwpe.2025.107717

Ning Liu , Rongxin Zhou , Shuangxue Huang , Jiming Zhang , Hongda Zhang , Hang Liu , Xiao Du , Dongyi Zhang , Renlong Zhang , Zhentao Sun , Shifeng Fu , Xiumei Zhan

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引用次数: 0

摘要

磁性生物炭是一种处理工业废水的有效吸附剂；但制备工艺和功能仍需进一步优化。因此，本研究采用共沉淀法制备多孔纳米铁生物炭复合材料（MMIBC），以去除废水中的铅（Pb）和镉（Cd）。对生物炭的物理结构和化学性质进行了表征；考察了pH等不同因素对吸附性能的影响及吸附机理的差异；并进行了循环吸附和解吸实验，验证了再生能力。结果表明，由于MMIBC具有丰富的含氧官能团、矿物组成和吸附过程，其对Cd和Pb的吸附量分别比未改性的生物炭高28.74%和18.95%。此外，MMIBC的磁性能增强重金属的固定和再生能力，有利于回收利用。低廉的成本、简单的工艺、优异的吸附性能和废物回收优势使MMIBC成为首选的生物质吸附剂。

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Effects of ferrite porous confined biochar nanoreactor on the adsorption and desorption of Pb and Cd

Magnetic biochar is an effective adsorbent for the treatment of industrial wastewater; however, the preparation process and function still need to be optimized. Therefore, in this study, porous nano‑iron biochar composites (MMIBC) were prepared using the co-precipitation method to remove lead (Pb) and cadmium (Cd) from wastewater. The physical structure and chemical properties of biochar were characterized; the effects of different factors, such as pH, on the adsorption properties and the differences in adsorption mechanisms were explored; and cyclic adsorption and desorption experiments were conducted to verify the regeneration capacity. The results showed that the adsorption capacities of MMIBC were 28.74 % (Cd) and 18.95 % (Pb) higher than those of unmodified biochar because of its rich oxygen-containing functional group, mineral composition, and adsorption process. Moreover, the magnetic properties of MMIBC can enhance the fixation and regeneration capacity of heavy metals and facilitate recycling. The low cost, simplistic process, excellent adsorption performance, and waste recycling advantages make MMIBC the preferred biomass adsorbent.

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies