Dinh Thi Hong Thanh , Nguyen The Duc Hanh , Bing-Lan Liu , Penjit Srinophakun , Chen-Yaw Chiu , Shen-Long Tsai , Kuei-Hsiang Chen , Yu-Kaung Chang
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引用次数: 0
Abstract
This study investigates the removal of lysozyme, a common waste protein, using weak ion-exchange nanofiber membranes (P-COOH) to address challenges in protein waste management and wastewater treatment. Protein waste, prevalent in industrial and biological processes, contributes to environmental pollution and increases treatment complexity if not effectively managed. Conventional methods often face limitations in selectivity and efficiency, highlighting the need for innovative solutions. The P-COOH nanofiber membrane, with its high surface area and tailored functional groups, was engineered to optimize protein removal. The removal process was analyzed in a batch system at an optimal pH of 7. Various kinetic models, such as pseudo-first-order, pseudo-second-order, Avrami, and intra-particle diffusion, were applied to elucidate rate-controlling steps. In contrast, isotherm models, including Langmuir, Freundlich, and Temkin, characterized the equilibrium of the removal process. Complete elution of removed lysozyme was achieved using a 0.3 M NaCl solution, yielding an equilibrium binding capacity of 315.24 mg/g on the nanofiber membranes. These findings indicate that the Avrami nonlinear model best describes lysozyme removal's complex, multi-step kinetics. In contrast, the Langmuir linear model accurately fits the equilibrium data, suggesting monolayer removal on a homogeneous surface. The successful reusability of the membranes underscores their potential for sustainable lysozyme removal from wastewater, offering a viable solution for improved waste management in industrial applications.
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.