Related Experiment Video
Updated: Jun 14, 2026

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide
Published on: June 28, 2019
Organoarsenic resistance and bioremoval of Acidithiobacillus ferrooxidans
Lei Yan1, Huanhuan Yin, Shuang Zhang
1MOE Key Laboratory of Arid and Grassland Ecology, School of Life Sciences, Lanzhou University, Lanzhou, PR China. hekouyanlei@gmail.com
Abstract:
The tolerance and bioremoval of dimethylarsinic acid (DMA(V)) by Acidithiobacillus ferrooxidans (A. ferrooxidans) were investigated here. The inhibitory concentration (IC) of DMA(V) was determined for A. ferrooxidans. The effects of various parameters such as pH, contact time, initial DMA(V) concentration, biosorbent dose and temperature were systematically examined to study the biosorption processes. Results indicated that Langmuir model fitted better than Freundlich model to the equilibrium data. Analysis of kinetic data showed that the biosorption processes of DMA(V) involved pseudo-second-order kinetics. Thermodynamic analysis showed that the biosorption of DMA(V) onto A. ferrooxidans was feasible, spontaneous, endothermic and chemisorptive under examined conditions. Fourier transform infrared spectroscopy (FTIR) showed the involvement of -OH, -NH and -SO(3) groups in the biosorption process.
More Related Videos
Related Concept Videos
Acid Mine Drainage
Microbial Leaching
Microbial Bioremediation of Uranium
Microbial Nutrition
Microbes and Other Elemental Cycles
Bioremediation

