Metal Biotechnology Laboratory, Faculty of Biology, University of Havana (Cuba), 25th Street #455 Vedado, 10400, La Habana, Cuba.
Biological and Enzymatic Reactors Group, Department of Chemical Engineering and Food Technology, Faculty of Sciences, Puerto Real, 11510, Cádiz, Spain.
Biodegradation. 2022 Feb;33(1):33-43. doi: 10.1007/s10532-021-09964-9. Epub 2021 Oct 17.
The metallurgical industry is one of the main sources of heavy metal pollution, which represents a severe threat to life. Metals can be removed from aqueous solutions by using microbial biomasses. This paper analyses the heavy metal biosorption capacity of Serratia marcescens strain 16 in single and multimetallic systems. The results obtained show that Co(II), Ni(II) and Zn(II) biosorption in monometallic systems is two to three times higher than in the presence of bi-metallic and multimetallic solutions. Fourier transform infrared spectroscopy confirmed that carbonyl, carboxyl and hydroxyl were the main functional groups, as well as the amide bands I and II involved in metal uptake, which are present in external structures of the bacterial cell. The results obtained demonstrated the viability of S. marcescens strain 16 as a biosorbent for the design of eco-friendly technologies for the treatment of waste liquor.
冶金工业是重金属污染的主要来源之一，对生命构成严重威胁。微生物生物量可用于从水溶液中去除金属。本文分析了粘质沙雷氏菌 16 菌株在单金属和多金属体系中的重金属吸附能力。结果表明，在单金属体系中，Co(II)、Ni(II)和 Zn(II)的吸附量是双金属和多金属溶液的两到三倍。傅里叶变换红外光谱证实，羰基、羧基和羟基是主要的功能基团，酰胺带 I 和 II 也参与了金属的摄取，这些基团存在于细菌细胞的外部结构中。研究结果表明，粘质沙雷氏菌 16 菌株具有作为生物吸附剂的可行性，可用于设计环保型废液处理技术。
