Sinyeue Cynthia, Garioud Théophile, Lemestre Monika, Meyer Michaël, Brégier Frédérique, Chaleix Vincent, Sol Vincent, Lebouvier Nicolas
ISEA, EA7484, Université de la Nouvelle Calédonie, Campus de Nouville, 98851 Nouméa, New Caledonia.
Laboratoire Peirene, EA 7500, Université de Limoges, 87000 Limoges, France.
Heliyon. 2022 Jan 28;8(2):e08842. doi: 10.1016/j.heliyon.2022.e08842. eCollection 2022 Feb.
The potential of Morelet sawdust for the removal of nickel ions (Ni) and other metallic trace ions (Co, Cr, Mn) from aqueous solutions was investigated under batch conditions. Several parameters such as size of particles, contact time, pH, initial metal and biomass concentrations, desorption conditions and reusability were evaluated on natural biomass. Biosorption was fast, effective (73%) and biomaterial can be reused after five cycles. To enhance the removal capacity of nickel, pine sawdust was modified by acidic and oxidative treatments. Cellulosic residues from sawdust sequential extraction showed great biosorption capacity (96%). In the presence of a metal mixture, oxidized sawdust had better selectivity for Cr ions than for Ni biomass could be an environmental, inexpensive and renewable material for the depollution of water laden with metallic trace elements.
在分批条件下研究了莫雷莱特木屑从水溶液中去除镍离子（Ni）和其他金属痕量离子（Co、Cr、Mn）的潜力。对天然生物质评估了几个参数，如颗粒大小、接触时间、pH值、初始金属和生物质浓度、解吸条件和可重复使用性。生物吸附快速、有效（73%），生物材料经过五个循环后可重复使用。为提高镍的去除能力，对松木屑进行了酸性和氧化处理。木屑顺序萃取得到的纤维素残渣显示出很大的生物吸附能力（96%）。在存在金属混合物的情况下，氧化木屑对Cr离子的选择性比对Ni离子的选择性更好。生物质可以成为一种用于去除含有金属微量元素的水体污染的环保、廉价且可再生的材料。
