Department of Fashion Design, College of Design, Qassim University, Al Fayziyyah Buraydah, Saudi Arabia.
Textile Engineering Laboratory, University of Monastir, Monastir, Tunisia.
Int J Phytoremediation. 2021;23(10):1085-1094. doi: 10.1080/15226514.2021.1876629. Epub 2021 Jan 29.
In this work, powdered seedpods were characterized and used as biosorbents of methylene blue dye from aqueous solution. FT-IR spectroscopy demonstrated functional groups characteristics of cellulose. Steric exclusion chromatography donated an average molecular weight of 230 kg/mol of the biopolymer. The polymolecularity index value (1.95) proved the good homogeneity of the polysaccharide. Scanning electron microscopy features displayed a homogenous morphology and porous structure. X-ray diffraction patterns showed peaks characteristics of cellulose and non-cellulose compositions. Thermogravimetric analysis/differential thermal analysis displayed exothermal decompositions at 316.9 °C and 456 °C. The maximum biosorption capacity of methylene blue was 88.36 mg/g at pH = 6, time = 60 min, and T = 21 °C. The level was comparable to some other studied agricultural wastes. The adsorption mechanism followed pseudo-second-order and Freundlich models. As it is abundant, available, low-cost, and easily recovered from solution, seedpods could be used as an effective biomaterial for the removal of organic pollutants from contaminated waters. An abundant, available, and low-cost seedpod was used, for the first time, as an effective biomaterial for the biosorption of organic pollutants. The biosorption level was found to be comparable to some other agricultural wastes studied previously in the literature.
在这项工作中，粉末状的豆荚被表征为水相中亚甲基蓝染料的生物吸附剂。傅里叶变换红外光谱法证明了纤维素的功能基团特征。空间排阻色谱法给出了生物聚合物的平均分子量为 230kg/mol。多分散指数值（1.95）证明了多糖的良好均一性。扫描电子显微镜的特征显示出均匀的形态和多孔结构。X 射线衍射图谱显示出纤维素和非纤维素成分的特征峰。热重分析/差示热分析显示在 316.9°C 和 456°C 处有放热分解。在 pH = 6、时间 = 60 分钟和 T = 21°C 时，亚甲基蓝的最大生物吸附容量为 88.36mg/g。该水平可与其他一些研究的农业废物相媲美。吸附机制遵循准二级和 Freundlich 模型。由于豆荚丰富、易得、成本低且易于从溶液中回收，因此可用作从受污染水中去除有机污染物的有效生物材料。首次使用丰富、易得且低成本的豆荚作为生物吸附有机污染物的有效生物材料。发现生物吸附水平可与文献中之前研究的其他一些农业废物相媲美。
