Université de Nantes, CNRS UMR 6230, CEISAM, 2 rue de la Houssinière, 44322 Nantes Cedex 3, France; Université Nangui Abrogoua, Laboratoire de Thermodynamique et de Physico-Chimie du Milieu, 02 BP 801 Abidjan 02, Côte d'Ivoire.
Université Nangui Abrogoua, Laboratoire de Thermodynamique et de Physico-Chimie du Milieu, 02 BP 801 Abidjan 02, Côte d'Ivoire.
J Environ Sci (China). 2019 Oct;84:174-183. doi: 10.1016/j.jes.2019.05.006. Epub 2019 May 17.
The fabrication of a fully bio-sourced adsorbent of Cd(II) by covalent immobilization of quinine on cellulose paper is described. The double bond of commercially available quinine was converted to a terminal alkyne function which was reacted with cellulose paper, chemically modified with azide functions, through a 1,3-dipolar cycloaddition, leading to Cell-Quin. The adsorption efficiency of Cell-Quin was investigated to determine the optimal pH, contact time and dose of adsorbent, ultimately leading to high levels of removal. The mechanism of adsorption of Cell-Quin was deeply rationalized through kinetic experiments and isotherm modeling. We also showed that Cell-Quin could adsorb other heavy metals such as Cu(II), Pb(II), Ni(II) and Zn (II).
本文描述了通过奎宁在纤维素纸上的共价固定化制备完全生物来源的 Cd(II) 吸附剂。商业上可用的奎宁的双键被转化为末端炔基官能团，该官能团通过 1,3-偶极环加成反应与纤维素纸反应，该纤维素纸经过叠氮官能团的化学修饰，得到 Cell-Quin。通过动力学实验和等温线模型深入合理化 Cell-Quin 的吸附机制，研究了 Cell-Quin 的吸附效率，以确定最佳 pH 值、接触时间和吸附剂用量，最终实现了高去除率。我们还表明 Cell-Quin 可以吸附其他重金属，如 Cu(II)、Pb(II)、Ni(II)和 Zn(II)。
