期刊
DESALINATION AND WATER TREATMENT
卷 169, 期 -, 页码 395-411出版社
DESALINATION PUBL
DOI: 10.5004/dwt.2019.24709
关键词
Adsorption; Bio-sorbent; Thiomers; Scaffold sorbent; Wastewater treatment
资金
- Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)
Water contamination is an increasing global concern due to deterioration of water quality. Chitosan and its derivatives are one of the most promising and applicable bio-sorbents for dye adsorption. This study investigated the adsorption properties of novel 3D scaffolds prepared with chitosan using modifiers with thiol group (or thiomers) for wastewater treatment. These thiomers were produced by the covalent conjugation of thiol moieties (cysteine) to chitosan (ChiCys), mediated by a zero-length crosslinker. Porous 3D scaffolds were tested for methyl orange and methylene blue adsorption. The results demonstrated high thiolation (ChiCys = 500 +/- 39 mu mol g(-1)). The prepared scaffolds showed a hierarchal interconnected 3D porous structure and chemical stability suitable for use as bio-sorbents. Moreover, they presented cytocompatibility using in vitro bioassays. These scaffolds demonstrated high adsorption efficiency (over 90%) and maximum uptake (305 +/- 2 mg g(-1)) at pH = 7.0 for methyl orange (100 mg L-1). The adsorption was well fitted to a pseudo-second-order kinetics and Langmuir equations. Thus, for the first time, thiomer 3D-scaffolds were produced by combining green bio-sorbent behavior for organic dyes, which offers an innovative strategy for the treatment of contaminated water bodies.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据