Purpose

In order to discover a new adsorbent that can be used to purify dye wastewater in the textile and apparel industry, a novel type of graphene oxide/gluten composite material using an improved acid bath coagulation method was synthesized, which can remove methylene blue in an aqueous environment.

Design/methodology/approach

After experimentally compounding different ratios of graphene oxide and gluten, the graphene oxide/gluten composite material with 20% graphene oxide content and superlative adsorption effect was chosen. The synthesized material was characterized by different techniques such as FT-IR and SEM, indicating the microstructure of the material and the success of the composite. Various factors were considered, namely, the influence of temperature, dosage, pH and contact time. The isotherms, kinetics and thermodynamic parameters were successively discussed.

Findings

The qmax value of 214.29 mg/g of the material was higher compared to the general sorbent, thus, the graphene oxide/gluten composite material was a suitable sorbent for methylene blue removal. Overall, the graphene oxide/gluten composite material can be considered as an effectual and prospective adsorbent to remove methylene blue in the textile and apparel industrial effluent.

Originality/value

Graphene oxide is a potentially excellent sorbent. However, the high dispersibility of GO is detrimental to adsorption, it disperses rapidly in an aqueous solution making separation and recovery difficult. The high load capacity and recyclability of gluten as a colloid make it a suitable carrier for fixing GO. Studies on the combination of GO and GT into composite adsorption material and for the removal of dyes from dyeing wastewater have not been reported. The composite material research on GO and GT can provide new ideas for the research of these kinds of materials and contribute to its wider and convenient application in wastewater treatment.

中文翻译：

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从氧化石墨烯/面筋复合材料中去除亚甲蓝的行为：动力学、等温线和热力学

目的

为了寻找一种可用于纺织服装行业染料废水净化的新型吸附剂，采用改进的酸浴混凝法合成了一种新型的氧化石墨烯/面筋复合材料，可去除水溶液中的亚甲基蓝。环境。

设计/方法/方法

通过实验复合不同比例的氧化石墨烯和面筋，选择了氧化石墨烯含量为20%、吸附效果最好的氧化石墨烯/面筋复合材料。合成的材料通过不同的技术（如 FT-IR 和 SEM）进行表征，表明材料的微观结构和复合材料的成功。考虑了多种因素，即温度、剂量、pH和接触时间的影响。先后讨论了等温线、动力学和热力学参数。

发现

与一般吸附剂相比，该材料的 qmax 值 214.29 mg/g 更高，因此，氧化石墨烯/麸质复合材料是一种适合去除亚甲基蓝的吸附剂。总的来说，氧化石墨烯/面筋复合材料可以被认为是一种有效且有前景的吸附剂，可以去除纺织和服装工业废水中的亚甲蓝。

原创性/价值

氧化石墨烯是一种潜在的优良吸附剂。然而，GO的高分散性不利于吸附，它在水溶液中快速分散，使得分离和回收困难。面筋作为胶体的高负载能力和可回收性使其成为固定 GO 的合适载体。GO与GT结合制成复合吸附材料以及去除印染废水中染料的研究尚未见报道。GO和GT复合材料的研究可以为这类材料的研究提供新的思路，有助于其在废水处理中更广泛、更便捷的应用。