Institute of Geotechnics SAS, Košice, Slovak Republic.
Odesa National Academy of Food Technologies, Odesa, Ukraine.
Waste Manag Res. 2021 Apr;39(4):584-593. doi: 10.1177/0734242X20943272. Epub 2020 Jul 24.
This research deals with a highly efficient, selective, low-cost, and recyclable adsorbent for the fast removal of lead (Pb)(II) ions from aqueous solutions, and an investigation of the related adsorption mechanisms. Three types of materials were prepared from pea peels waste using simple, energy-efficient and environmentally friendly treatment. Obtained adsorbents were characterized by elemental analysis, infrared spectroscopy, scanning electron microscopy, Boehm titration, and the main parameters were determined. The highest adsorption capacity was observed for the biochar prepared by heating of pea peels at 600°C for 30 minutes. The uptake of Pb(II) ions on pea peels-derived samples was examined as a function of pH, contact time, and initial Pb concentration. Obtained results from adsorption experiments of Pb(II) ions on the biochar surface indicate high adsorption capacity, and the possibility of its preconcentration and selective removal in the presence of zinc(II) and cadmium(II) ions. This confirms a potential application of such materials in water remediation.
本研究涉及一种高效、选择性好、成本低且可回收的吸附剂，用于从水溶液中快速去除铅（Pb）（II）离子，并研究了相关的吸附机制。使用简单、节能且环保的处理方法，从豌豆皮废料中制备了三种材料。通过元素分析、红外光谱、扫描电子显微镜、Boehm 滴定对所得到的吸附剂进行了表征，并确定了主要参数。观察到在 600°C 下加热豌豆皮 30 分钟制备的生物炭的吸附容量最高。研究了豌豆皮衍生样品对 Pb(II)离子的吸附作用与 pH、接触时间和初始 Pb 浓度的关系。从 Pb(II)离子在生物炭表面的吸附实验中得到的结果表明，该吸附剂具有高吸附容量，并且在存在锌（II）和镉（II）离子的情况下，具有预浓缩和选择性去除的可能性。这证实了此类材料在水修复中的潜在应用。
