N/O杂原子掺杂生物质衍生活性炭增强对有毒染料污染物的吸附

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy Pub Date : 2025-05-07 DOI:10.1016/j.biombioe.2025.107968

Şeyda Karadirek, Nergiz Kanmaz, Özlem Tuna, Pelin Demircivi

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引用次数: 0

摘要

以橡子浆为原料，经炭化处理，再与草酸和尿素水热反应，得到N/ o掺杂活性炭（ACON）。将合成的活性炭样品作为吸附亚甲基蓝的吸附剂。其优良的性能使其对MB的吸附效率达到94.21%，是裸活性炭（57.60%）的1.63倍。这可能是由于比表面积的增强和新的活性基团的形成，支持BET， SEM， FTIR和XPS分析。染料在ACON上的吸附是一个自发吸热过程，吸附机理可以用拟二级动力学模型和Langmuir等温模型来解释。由于不同水基质中阳离子与MB的竞争，吸附效率下降。在第四个循环中，MB的去除率为71.8%，并且吸附剂相对稳定。这种相互作用主要是由于阳离子染料分子与ACON表面几乎两性的充分结合。此外，该吸附剂在孔雀石绿（MG）和环丙沙星（CPx）的吸附过程中表现出良好的吸附性能。综上所述，本研究表明了N/ o掺杂活性炭在废水处理系统中的适用性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Designing of N/O heteroatoms doped biomass-derived activated carbon for boosting toxic dye pollutant adsorption

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Designing of N/O heteroatoms doped biomass-derived activated carbon for boosting toxic dye pollutant adsorption

Herein, N/O-doped activated carbon (ACON) was obtained through carbonization of acorn pulp followed by hydrothermal reaction with oxalic acid and urea. The synthesized activated carbon samples were employed as adsorbents for methylene blue (MB) adsorption. The admirable properties provided high MB adsorption efficiency (94.21 %), which was 1.63 times greater than that of the bare activated carbon (57.60 %). This could be due to the enhancement of specific surface area and the formation of new active groups, supporting BET, SEM, FTIR and XPS analyses. The adsorption of dye onto ACON was a spontaneous endothermic process, as well as the adsorption mechanism could be explained with the pseudo-second-order kinetic model and the Langmuir isotherm model. Adsorption efficiency decreased due to the competition of cationic species in different water matrices with MB. In the fourth cycle, 71.8 % MB removal was achieved, and the sorbent was found relatively stable. The interactions were proposed to mainly account for sufficient combination of cationic dye molecules and nearly amphoteric ACON surface. In addition, the adsorbent showed promising performance in malachite green (MG) and ciprofloxacin (CP_x) adsorption processes. To conclude, this study showed the applicability of N/O-doped activated carbon in wastewater treatment systems.

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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.