One stone, two birds: An eco-friendly aerogel based on waste pomelo peel cellulose for the efficient adsorption of dyes and heavy metal ions
文献类型： 外文期刊
作者： Su, Haize 1 ; Deng, Tianren 1 ; Qiu, Weipeng 1 ; Hu, Tenggen 1 ; Zheng, Xiaoling 1 ; Peng, Kaibin 1 ; Zhang, Yingyuan 3 ; Zhao, Yali 3 ; Xu, Zhenlin 1 ; Lei, Hongtao 1 ; Wang, Hong 1 ; Wen, Peng 1 ;
作者机构： 1.South China Agr Univ, Coll Food Sci, Guangdong Prov Key Lab Food Qual & Safety, Guangzhou 510642, Peoples R China
2.Guangdong Acad Agr Sci, Sericultural Agri Food Res Inst, Key Lab Funct Foods, Minist Agr & Rural Affairs,Guangdong Key Lab Agr P, Guangzhou 510610, Peoples R China
3.Guizhou Acad Testing & Anal, Guiyang 550000, Peoples R China
关键词： Pomelo-peel carboxylated cellulose; Biobased aerogel bead; Adsorption of dyes and heavy metal ions
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：7.7； 五年影响因子：7.7 ）
ISSN： 0141-8130
年卷期： 2024 年 273 卷
页码：
收录情况： SCI
摘要： To achieve the objective of "waste control by waste", in this study, a green aerogel adsorbent comprised of pomelo-peel cellulose and sodium alginate (PCC/SA) was prepared through dual-network crosslinking. The resulting 3D hierarchical porous structured PCC/SA aerogel exhibited good structural stability, and kept the morphological integrity during 10 days in a wide pH range (2-10), suggesting its potential for recycling in diverse complex environments. Besides, the superior adsorption capacities for methylene blue (MB) and Cu(II) were observed, with the qm values and adsorption equilibrium times were recorded to be 1299.59 mg/g (300 min) and 287.55 mg/g (120 min), correspondingly. Furthermore, the favorable reusability of the PCC/SA aerogel was also demonstrated, with the removal efficiency for MB remaining almost unchanged (about 94 %) after 10 adsorption-desorption cycles, while there was a slight reduction for Cu(II) from 85.28 % to 72.47 %. XPS and FTIR analysis revealed that electrostatic attraction, hydrogen bonding, cation exchange and coordination were the major adsorption mechanisms. Importantly, the PCC/SA aerogel can be naturally degraded in soil within 10 weeks. Therefore, the as-prepared aerogel bead derived from pomelo peel shows great promise as an adsorbent for wastewater treatment containing dye and heavy metal ions.
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