Ghoniemy E A, Mohammaden T F, El-Shahat M Ramadan, Elkhawaga M A, Rezk M Mahmoud, Wessam M Morsi
Botany and Microbiology Department, Faculty of Science (Girls), Al-Azhar University, Egypt.
Isotopes Department, Nuclear Materials Authority, Egypt.
Biotechnol Rep (Amst). 2020 May 19;26:e00472. doi: 10.1016/j.btre.2020.e00472. eCollection 2020 Jun.
Four fungal and one bacterial isolates were isolated from a liquid waste sample of Nuclear Material Authority. Those dried biomasses were screened for uranium (U) and thorium (Th) adsorption efficiency where the most potent isolate was identified according to sequence similarities and phylogenetic analysis as LBM 134 Using U or Th synthetic solutions many factors were investigated for controlling the biosorption process to conduct the optimum process conditions (the solution pH, contact time, elemental initial concentration, biomass dosage, and sorption temperature). was examined ESEM-EDX and the FTIR techniques before and after the sorption process, also the data were handled by different kinetics and isothermal models. Application on the real liquid waste revealed that the bio-uptake capacities were 18.5 and 11.1 mg/g for U and Th respectively.
从核材料管理局的一份废液样本中分离出了四种真菌菌株和一种细菌菌株。对这些干燥的生物质进行了铀(U)和钍(Th)吸附效率的筛选,根据序列相似性和系统发育分析,确定最有效的菌株为LBM 134。使用铀或钍的合成溶液,研究了许多控制生物吸附过程的因素,以确定最佳工艺条件(溶液pH值、接触时间、元素初始浓度、生物质用量和吸附温度)。在吸附过程前后,采用扫描电子显微镜-能谱仪(ESEM-EDX)和傅里叶变换红外光谱(FTIR)技术进行了检测,数据也用不同的动力学和等温模型进行了处理。对实际废液的应用表明,铀和钍的生物吸收容量分别为18.5和11.1 mg/g。