交联壳聚糖草酸酯和改性芒果种子高效吸附结晶紫染料的可持续吸附剂的生产：水处理和生物质增殖

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy Pub Date : 2025-04-19 DOI:10.1016/j.biombioe.2025.107889

Ahmed Saud Abdulhameed , Samaa Abdullah , Alaa A. Al-Masud , Rima Heider Al Omari , Mahmoud Abualhaija , Sameer Algburi

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引用次数: 0

摘要

这项工作旨在通过将农业废弃物转化为高效吸附剂来去除污染水源中的污染物，从而促进生物质价值的可持续水处理。以壳聚糖草酸酯为原料，用硝酸（HNO3）对芒果（Mangifera indica L.）种子进行化学改性，制备了一种生物吸附材料CHI-OX/MS-HN，用于去除水生系统中的结晶紫（CV）染料。采用响应面法（RSM）研究了三个参数对CV染料吸附的影响。这些因素如下：A: CHI-OX/MS-HN的剂量（0.02 ~ 0.08 g）， B: pH (4 ~ 10)， C：持续时间（10 ~ 40 min）。Freundlich和拟一级动力学模型充分描述了CHI-OX/MS-HN对CV的吸附，如等温线和吸附动力学所示。结果表明，CHI-OX/MS-HN复合材料对CV染料的最大吸附量为306.51 mg/g，吸附剂用量为0.046 g/L，溶液pH为9.7，接触时间为33.8 min，最大去除率为97.0%。热力学分析显示焓（ΔH°）和熵（ΔS°）为正值，自由能（ΔG°）为负值，表明该过程是吸热自发的。静电相互作用、氢键相互作用和n-π相互作用可能是CHI-OX/MS-HN复合材料吸附CV染料的机理。基于本研究结果，CHI-OX/MS-HN是一种有效去除废水中阳离子染料的吸附剂。所获得的结果也表明了一种环保的、长期的策略，即制备壳聚糖/改性生物质吸附剂，有效地去除废水中的阳离子染料。它通过最大限度地减少生物质废物，使用更少的资源，并通过使用先进的材料和方法改善水质来支持环境的可持续性。

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Production of sustainable adsorbent of crosslinked chitosan-oxalate and modified mango (Mangifera indica L.) seed for highly efficient adsorption of crystal violet dye: Water treatment and biomass valorization

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This work aims to the biomass valorization in advancing sustainable water treatment by converting agricultural waste into highly effective adsorbents for pollutant removal from contaminated water sources. Herein, a bioadsorbent material (CHI-OX/MS-HN) was developed from crosslinked chitosan-oxalate and chemically modified mango (Mangifera indica L.) seed with nitric acid (HNO₃) to remove crystal violet (CV) dye from aquatic systems. The influence of three parameters on the CV dye adsorption was investigated using response surface methodology (RSM). These factors are as follows: A: dosage of CHI-OX/MS-HN (0.02–0.08 g), B: pH (4–10), and C: duration (10–40 min). Freundlich and pseudo-first-order kinetic models adequately described the CV adsorption by CHI-OX/MS-HN, as shown by the isotherms and adsorption kinetics. Employing a desire function approach, the optimum conditions for maximum dye removal efficiency of 97.0 % are: adsorbent dose 0.046 g/L, solution pH 9.7, and contact time 33.8 min. The CHI-OX/MS-HN composite had a maximum CV dye adsorption capacity of 306.51 mg/g. The thermodynamic analysis reveals positive values for enthalpy (ΔH°) and entropy (ΔS°), along with a negative value for free energy (ΔG°), indicating that the process is both endothermic and spontaneous. Electrostatic interaction, hydrogen bonding, and n-π interactions were suggested as the mechanisms for CV dye adsorption onto CHI-OX/MS-HN composite. Based on the findings of this study, CHI-OX/MS-HN is an adsorbent that effectively removes cationic dyes from wastewater. The acquired results also show an eco-friendly, long-term strategy for making chitosan/modified biomass adsorbents that effectively remove cationic dyes from wastewater. It supports environmental sustainability by minimizing biomass waste, using fewer resources, and improving water quality by using advanced materials and methods.

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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.