【摘 要】
：
Marinobacter sp.MnI7-9 efficiently oxidizes Mn2+ to generate biogenic Mn oxide (BMO), primarily δ-MnO2.In this study, we show that the BMO has a high adsor
【机 构】
：
State Key Laboratory of Agricultural Microbiology,College of Basic Sciences,Huazhong Agricultural Un
【出 处】
：
第十六次全国环境微生物学学术研讨会
论文部分内容阅读
Marinobacter sp.MnI7-9 efficiently oxidizes Mn2+ to generate biogenic Mn oxide (BMO), primarily δ-MnO2.In this study, we show that the BMO has a high adsorption capacity for Ag+ compared to the chemical MnO2 (CMO), especially at high concentrations of Ag+.The maximum adsorption capacities of the BMO and the CMO at 28℃ were 8.097 and 0.787 mmol/g, respectively, which correlates well with both the pseudo-second order model and the Langmuir model.The change in enthalpy (△Hθ) for the BMO was 59.692 kJ/mol, indicating that it acts primarily by chemical adsorption, while △Hθ for the CMO was 2.287 kJ/mol, which suggests a physical adsorption process.All of the △Hθ values were greater than zero, indicating an endothermic adsorption process.The values for the change in free energy (△Gθ) using both the materials were all negative, which suggests that the adsorption occurs spontaneously.Adsorption by the BMO and the CMO was driven by entropy based on the positive △Sθ values.After adsorption, the silver remained on the surface of the BMO and primarily took the form of Ag (Ⅰ).An ideal desorption method using nitric acid was established and recovered 100% Ag.
其他文献
富可视于近日获得上海通用商用投影机大笔订单,中标机型是“深蓝”投影机。据了解,此次采购的投影机全部是在会议室里使用,经过严格筛选和综合对比,富可视的投影机产品最终获
本研究以一种分布于海南的木食性高等白蚁象白蚁为研究对象,对其肠道中能降解纤维素的微生物进行了筛选,从中获得了一个能降解纤维素的混合菌系,并对混合菌系菌群组成及纤维
草莓高产必用“通微一号”根治大白菜软腐病还是“丰灵”绿色食品的良友，产品丰收致富的保证，请用我厂生物制剂产品。通微一号是一种新型的细胞分裂素、抗生素。它施用于草莓，有
Glaciers contain large part of microbial processes and the distribution of bacteria is affected by atmospheric circulations and surrounding environments.In
The environmental pollution problem resulted from e-waste dismantling process has become a global concern.A pilot-scale biotrickling filter(BTF) was designe
为使双孢蘑菇生产逐步实现菌种统一、良种化,制种专业化,栽培集约化,提高蘑菇的产量与质量,为蘑菇罐头加工生产提供优质的原料,1992～1995年我所与闽东罐头食品集团公司联营集
有一次去伦敦,格林说服了嘉宝一起去拜访塞西尔·比顿,嘉宝与塞西尔曾有过一段令人捉摸不透的罗曼史。他们最严重的也是最后一次争吵还是在1972年和1973年由于比顿的日记的
A bacterial consortium was enriched from a saline soil contaminated by crude oil using phenanthrene as the sole source of carbon and energy at 10% salinity.
在日益加速的城市化进程中,生产、生活过程产生的大量工业废水以及生活污水使城市水体生态系统受到严重污染,同时快速发展城市化也使得城市内河水体中的形态和内部结构发
本文从武汉钢厂焦化废水好氧活性污泥中分离鉴定了一株吡啶降解菌(CZ31)，经富集培养和驯化获得较高的吡啶降解能力。研究了CZ31吡啶降解特性与代谢途径，并进一步研究了降解产物