用于去除水中有机污染物的黑液衍生木质素吸附剂

IF 5.1 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers Pub Date : 2025-04-01 Epub Date: 2025-02-01 DOI:10.1016/j.reactfunctpolym.2025.106185

Hande Barkan Öztürk , Philip Verdross , Alexander Bismarck

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引用次数: 0

摘要

介绍了以原液为原料制备木质素颗粒，并对其进行化学改性，使其成为去除水中有机污染物的高效吸附剂。为了生产吸附剂粉末，原始黑液（从纸浆厂获得）与环氧氯丙烷和斯潘80乳化并在高温下固化。在木质素骨架上合成磷酸酯和有机硫酸盐对其进行改性。研究了有机模型化合物、百草枯、对硝基苯酚和孔雀石绿的吸附。通过实验和拟合数学模型（Langmuir等温线和Freundlich等温线）获得了吸附过程的动力学和热力学数据。在批量吸附实验中，吸附剂对百草枯的吸附量Qe = 62 mg/g，对硝基苯酚的吸附量Qe = 199 mg/g，孔雀石绿的吸附量Qe = 1200 mg/g。这些值是在文献中提出的任何模型化合物中最高的。所有化合物的吸附都发生得相当快，在几分钟到几小时内达到平台吸附。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Black liquor derived lignin adsorbents for removal of organic pollutants from water

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Black liquor derived lignin adsorbents for removal of organic pollutants from water

We present the preparation of lignin particles from raw black liquor and their chemical modification, so that they can be used as efficient adsorbents to remove organic pollutants from water. For the production of adsorbent powders, pristine black liquor (as obtained from a pulping mill) was emulsified with epichlorohydrin and Span 80 and cured at elevated temperatures. Phospinic esters and organic sulphates were synthetically introduced to the lignin-backbone to modify the adsorbents. The adsorption of organic model compounds, Paraquat, p-nitrophenol, and malachite green were studied. Kinetic and thermodynamic data of the adsorption processes was obtained experimentally and by fitting mathematical models (Langmuir and Freundlich isotherms). Adsorbents showed adsorption capacities of Q_e = 62 mg/g for Paraquat, Q_e = 199 mg/g for p-nitrophenol, and Q_e = 1200 mg/g for malachite green in batch-adsorption experiments. These values are among the highest for any of the model compounds presented in literature. Adsorption occurred reasonably fast for all compounds, reaching plateau-adsorption within minutes to hours.

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来源期刊

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.