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A super-efficient polyquaternium gel that can remove over-10-times masses of lignins from wastewater for resourcefulness
npj Clean Water ( IF 11.4 ) Pub Date : 2023-01-04 , DOI: 10.1038/s41545-022-00216-8
Menghan Hu , Na Xie , Shan Gao , Yujia Huang , Yikai Yu

To address the efficient resourcefulness of papermaking wastewater, this study designed a super-efficient gel material (SGPQG/SGPQ) that could remove over-10-times masses of lignins from wastewater, and subsequently realized the highly-efficient reuse of wastes. The mass of lignin removed by per unit mass of SGPQG/SGPQ was 10,157.71 mg•g-1, i.e., the mass of lignin removed was 10.16 times that of the mass of SGPQG/SGPQ itself, which was 1.23-50.55 times better than the existing similar materials, showing a super-efficient lignin removal ability. Meanwhile, the average lignin removal rate of SGPQG/SGPQ was 1.85-3.34 times higher than those of the pre-products. Moreover, the extended application of SGPQG/SGPQ in the purification of a complex wastewater and a real papermaking wastewater had been also successfully carried out. The mechanism investigations confirmed an integrated skeleton-space effect mechanism, which is the key factor for SGPQG/SGPQ to achieve the super-efficient lignin removal in the purification of papermaking wastewater. In addition, the SGPQG/SGPQ wastes after treating lignins, could be directly used for adsorption treatment of dyeing wastewater, and had 443.9 times adsorption capacity compared to the widely-used activated carbon, demonstrating an efficient resourcefulness reuse.



中文翻译:

一种超高效的聚季铵盐凝胶,可以从废水中去除超过 10 倍质量的木质素,以实现足智多谋

为了解决造纸废水的高效资源化问题,本研究设计了一种超高效凝胶材料(SGPQG/SGPQ),可以去除废水中10倍以上质量的木质素,从而实现了废物的高效再利用。单位质量SGPQG/SGPQ去除的木质素质量为10,157.71 mg•g -1即去除木质素的质量是SGPQG/SGPQ本身质量的10.16倍,是现有同类材料的1.23-50.55倍,表现出超高效的木质素去除能力。同时,SGPQG/SGPQ的平均木质素去除率是前产品的1.85-3.34倍。此外,SGPQG/SGPQ在复杂废水和实际造纸废水净化中的推广应用也已成功开展。机理研究证实了一个完整的骨架空间效应机制,这是 SGPQG/SGPQ 在造纸废水净化中实现超高效木质素去除的关键因素。此外,经木质素处理后的SGPQG/SGPQ废液,可直接用于印染废水的吸附处理,有443个。

更新日期:2023-01-04
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