Tokarčíková Michaela, Motyka Oldřich, Peikertová Pavlína, Gabor Roman, Seidlerová Jana
Nanotechnology Centre, Energy and Environmental Technology Centre, VŠB-Technical University of Ostrava, 708 33 Ostrava-Poruba, Czech Republic.
Materials (Basel). 2021 Nov 3;14(21):6610. doi: 10.3390/ma14216610.
Although both beryllium and its compounds display high toxicity, little attention has been focused on the removal of beryllium from wastewaters. In this research, magnetically modified biochar obtained from poor-quality wheat with two distinct FeO contents was studied as a sorbent for the elimination of beryllium from an aqueous solution. The determined elimination efficiency was higher than 80% in both prepared composites, and the presence of FeO did not affect the sorption properties. The experimental values were determined to be 1.44 mg/g for original biochar and biochar with lower content of iron and 1.45 mg/g for the biochar with higher iron content. The optimum pH values favorable for sorption were determined to be 6. After the sorption procedure, the sorbent was still magnetically active enough to be removed from the solution by a magnet. Using magnetically modified sorbents proved to be an easy to apply, low-cost, and effective technique.
尽管铍及其化合物都具有高毒性，但从废水中去除铍的研究却很少受到关注。在本研究中，以两种不同FeO含量的劣质小麦制备的磁性改性生物炭作为吸附剂，用于从水溶液中去除铍。在两种制备的复合材料中，测定的去除效率均高于80%，且FeO的存在不影响吸附性能。原始生物炭和铁含量较低的生物炭的实验值为1.44 mg/g，铁含量较高的生物炭的实验值为1.45 mg/g。确定有利于吸附的最佳pH值为6。吸附过程完成后，吸附剂仍具有足够的磁活性，可通过磁铁从溶液中分离出来。使用磁性改性吸附剂被证明是一种易于应用、低成本且有效的技术。
