废物增值策略：高效磁性超细牛毛粉的制备及其对酸性染料的吸附性能

IF 3.7 3区生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Biochemical Engineering Journal Pub Date : 2025-07-01 DOI:10.1016/j.bej.2025.109847

Xinyue Nian , Feifei Zhang , Jie Liu , Jianan Song

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引用次数: 0

摘要

为解决皮革生产过程中产生的大量动物毛发堆积造成的环境问题，本研究以FeSO4·7 H2O和FeCl3·6 H2O为原料，将牛毛废料（CHW）机械研磨成超细牛毛粉（UCP），通过原位生成法合成磁性牛毛粉吸附材料（MUCP）。通过不同条件下的吸附实验，考察了MUCP对酸性染料的吸附性能。结果表明，pH值越低，染料去除率越高。当pH = 2时，染料去除率达到93.1 %。吸附过程符合拟二级动力学模型和Langmuir等温模型。以0.1 g的MUCP-8吸附初始浓度为500 mg·L−1、pH为3、温度为45℃、吸附时间为48 h的染料溶液，最大吸附量为699.30 mg·g−1。MUCP对酸性染料的吸附机制主要包括空隙填充、氢键、质子化氨基与带负电的染料离子之间的静电吸引。MUCP具有超顺磁性，可以在染料吸附后的外磁场下轻松快速地从混合溶液中分离和回收。这为磁性生物基吸附材料在染料废水处理和废物资源化方法中的应用提供了新的解决方案。

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Waste valorization strategy: Fabrication of high-efficiency magnetic ultrafine cattle hair powder and its adsorption performance on acid dye

To address the environmental issues caused by the accumulation of large amounts of animal hair generated during the leather production process, this study mechanically milled cattle hair waste (CHW) into ultrafine cattle hair powder (UCP), and a magnetic cattle hair powder adsorbent material (MUCP) was synthesized through an in-situ generation method using FeSO₄·7 H₂O and FeCl₃·6 H₂O as sources. Adsorption experiments were conducted under various conditions to investigate the adsorption performance of MUCP for acid dye. The results showed that lower pH levels led to higher dye removal rates. When the pH was 2, the dye removal rate reached 93.1 %. The adsorption process was consistent with the pseudo-second-order kinetics model and the Langmuir isotherm model. When 0.1 g of MUCP-8 was used to adsorb the dye solution with an initial concentration of 500 mg·L⁻¹, pH 3, 45 ℃, and a duration time of 48 h, the maximum adsorption capacity was 699.30 mg·g⁻¹. The adsorption mechanism of MUCP for acid dye mainly involved void filling, hydrogen bonding, and electrostatic attraction between protonated amino groups and negatively charged dye ions. MUCP has superparamagnetic properties, allowing easy and quick separation and recovery from the mixed solution under an external magnetic field after dye adsorption. This provides a new solution for bio-based adsorbent materials with magnetic properties in dye wastewater treatment and waste-to-resource methods.

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来源期刊

Biochemical Engineering Journal 工程技术-工程：化工

CiteScore

7.10

自引率

5.10%

发文量

380

审稿时长

34 days

期刊介绍： The Biochemical Engineering Journal aims to promote progress in the crucial chemical engineering aspects of the development of biological processes associated with everything from raw materials preparation to product recovery relevant to industries as diverse as medical/healthcare, industrial biotechnology, and environmental biotechnology. The Journal welcomes full length original research papers, short communications, and review papers* in the following research fields: Biocatalysis (enzyme or microbial) and biotransformations, including immobilized biocatalyst preparation and kinetics Biosensors and Biodevices including biofabrication and novel fuel cell development Bioseparations including scale-up and protein refolding/renaturation Environmental Bioengineering including bioconversion, bioremediation, and microbial fuel cells Bioreactor Systems including characterization, optimization and scale-up Bioresources and Biorefinery Engineering including biomass conversion, biofuels, bioenergy, and optimization Industrial Biotechnology including specialty chemicals, platform chemicals and neutraceuticals Biomaterials and Tissue Engineering including bioartificial organs, cell encapsulation, and controlled release Cell Culture Engineering (plant, animal or insect cells) including viral vectors, monoclonal antibodies, recombinant proteins, vaccines, and secondary metabolites Cell Therapies and Stem Cells including pluripotent, mesenchymal and hematopoietic stem cells; immunotherapies; tissue-specific differentiation; and cryopreservation Metabolic Engineering, Systems and Synthetic Biology including OMICS, bioinformatics, in silico biology, and metabolic flux analysis Protein Engineering including enzyme engineering and directed evolution.