Phosphorylated Bacterial Cellulose-Poly(vinyl alcohol) Membrane for Organic Pollutant Removal

IF 8.2 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2025-05-29 DOI:10.1021/acsami.5c0199810.1021/acsami.5c01998

Pornsuda Kotcharat, Bhumin Than-ardna, Christoph Weder and Hathaikarn Manuspiya*,

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Abstract

A bacterial cellulose (BC)/poly(vinyl alcohol) (PVA) composite membrane was phosphorylated using a diammonium phosphate (DAP) solution to increase its capability to remove organic pollutants from wastewater. The bacterial cellulose was extracted from nata de coco waste, and the formation of a composite membrane was achieved by casting aqueous mixtures that, in addition to the BC, contain 3% w/w PVA relative to the BC. The membranes thus made were subsequently phosphorylated to increase the surface charge density and thereby the adsorption capacity of the membrane. The concentration of DAP was varied from 0.05 to 0.3 M to vary the charge density of the membrane. Using methylene blue (MB) as a model pollutant, it is shown that phosphorylation increases the MB adsorption capacity from 2.9 to 20.3 mg/g and leads to multilayer adsorption behaviors. Recyclability experiments confirm the high reusability of the membranes over 5 cycles and demonstrate a high removal efficiency of over 90%.

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磷酸化细菌纤维素-聚乙烯醇膜去除有机污染物

采用磷酸二铵（DAP）溶液对细菌纤维素(BC)/聚乙烯醇（PVA）复合膜进行了磷酸化处理，以提高其去除废水中有机污染物的能力。从椰子树废料中提取细菌纤维素，并通过浇注水混合物来形成复合膜，该水混合物除了BC外，还含有相对于BC的3% w/w的PVA。这样制成的膜随后被磷酸化以增加表面电荷密度，从而提高膜的吸附能力。DAP的浓度在0.05 ~ 0.3 M范围内变化，以改变膜的电荷密度。以亚甲基蓝（MB）为模型污染物，结果表明，磷酸化使亚甲基蓝的吸附量从2.9 mg/g增加到20.3 mg/g，并导致多层吸附行为。可回收性实验表明，膜的可重复利用性高，循环次数超过5次，去除率达到90%以上。

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.