L Acioly Leonila M, Cavalcanti Davi, Luna Marcos C, V Júnior José C, S Andrade Rosileide F, de Lima E Silva Thayse A, La Rotta Camilo E, Campos-Takaki Galba M
Post Graduate Program in Biological Sciences, Federal University of Pernambuco, 50670-420, Recife, PE, Brazil.
Nucleus of Research in Environmental Sciences and Biotechnology, Catholic University of Pernambuco, 50050-590, Recife, PE, Brazil.
Open Microbiol J. 2018 Aug 31;12:297-307. doi: 10.2174/1874285801812010297. eCollection 2018.
Cadmium (Cd), which is a deadly heavy metal of work-related and environmental concern, has been recognized as a substance that is teratogenic and carcinogenic for humans. Therefore, the need to develop low-cost adsorbents to remove heavy metals from aqueous solution has greatly increased. Adsorbents such as biomass have been used.
We investigated the biotechnological potential of for the biosorption of cadmium from aqueous solution.
UCP1320 isolated from the effluent of a laundry industry was used to remove cadmium from aqueous solutions. Two approaches were compared using active or thermally inactivated biomass. Three different cadmium concentrations of 1, 10 and 100 ppm were used under constant stirring at temperatures of 25°C and 35°C as was pH of 3.0, 5.0 and 7.0. Variable incubation times of 1, 6, and 24h were also studied.
The results showed that the temperature did not influence the uptake of metal by living cells nor by inactive bacterial biomass. However, increasing the pH had a positive effect on removing intermediate concentrations of cadmium. Low concentrations of cadmium were completely removed by both live and inactive biomass.
biomass was shown to have a promising performance for the biotechnological removal of cadmium which had been dissolved in aqueous solution.
镉（Cd）是一种与工作和环境相关的致命重金属，已被公认为对人类具有致畸和致癌性的物质。因此，开发低成本吸附剂以从水溶液中去除重金属的需求大幅增加。诸如生物质等吸附剂已被使用。
我们研究了[具体物质未给出]从水溶液中生物吸附镉的生物技术潜力。
使用从洗衣行业废水分离出的UCP1320从水溶液中去除镉。比较了使用活性或热灭活生物质的两种方法。在25°C和35°C的温度以及pH值为3.0、5.0和7.0的条件下，在持续搅拌下使用三种不同镉浓度1、10和100 ppm。还研究了1、6和24小时的不同孵育时间。
结果表明，温度对活细胞和无活性细菌生物质摄取金属均无影响。然而，提高pH值对去除中等浓度的镉有积极作用。低浓度的镉被活生物质和无活性生物质完全去除。
[具体物质未给出]生物质显示出在生物技术去除溶解于水溶液中的镉方面具有良好性能。
