Bioremoval of molybdenum from aqueous solution

• Main Authors: Halmi, Mohd Izuan Effendi, Wasoh @ Mohamad Isa, Helmi, Sukor, Surani, Ahmad, Siti Aqlima, Yusof, Mohd Termizi, Abd. Shukor, Mohd. Yunus
• Format: Article
• Language: English
• Published: Friends Science Publishers 2014
• Online Access: http://psasir.upm.edu.my/id/eprint/52091/1/Bioremoval%20of%20molybdenum%20from%20aqueous%20solution.pdf; http://psasir.upm.edu.my/id/eprint/52091/; https://www.fspublishers.org/Issue.php?categoryID=125

Molybdenum is very toxic to ruminants with level as low as 2 parts per million can cause severe scouring. Its contamination of waters and soils in agricultural areas needs novel removal technology. In this work we demonstrated a novel method of molybdenum removal from aqueous solution using the dialysis tubing method coupled with molybdenum-reducing activity of Serratia sp. strain Dry5. The enzymatic reduction of molybdenum is molybdenum blue, a colloid that does not pass through dialysis tubing. The calculated maximal rate of molybdenum blue production (VMoblueMax) was 0.264±0.034 mM (Mo-blue h)-1 and the concentration of molybdate resulting in the half-maximal rate of reduction (KMo) was 21.78±3.89 mM molybdate and the specific maximal rate of Mo-blue production was approximately 80 mM (Mo-blue.hr.mg cells)-1 indicating an efficient system with high tolerance towards molybdenum.