Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
679563 | Bioresource Technology | 2015 | 9 Pages |
Abstract
Changes in algal and bacterial communities during thiocyanate (SCNâ) decomposition in a microalga-mediated process were studied. Pyrosequencing indicated that Thiobacillus bacteria and Micractinium algae predominated during SCNâ hydrolysis, even after its complete degradation. Principal components analysis and evenness profiles (based on the Pareto-Lorenz curve) suggested that the changes in the bacterial communities were driven by nitrogen and sulfur oxidation, pH changes, and photoautotrophic conditions. The populations of predominant microalgae remained relatively stable during SCNâ hydrolysis, but the proportion of bacteria - especially nitrifying bacteria - fluctuated. Thus, the initial microalgal population may be crucial in determining which microorganisms dominate when the preferred nitrogen source becomes limited. The results also demonstrated that microalgae and SCNâ-hydrolyzing bacteria can coexist, that microalgae can be effectively used with these bacteria to completely treat SCNâ, and that the structure of the algal-bacterial community is more stable than the community of nitrifying bacteria alone during SCNâ degradation.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Byung-Gon Ryu, Woong Kim, Kibok Nam, Sungwhan Kim, Bongsoo Lee, Min S. Park, Ji-Won Yang,