@article{article_342826, title={GROWTH AND OPTIMIZATION PROCESSES OF MIXED MICROBIAL POPULATION DEGRADING CHRYSENE}, journal={Gazi University Journal of Science}, volume={31}, pages={740–757}, year={2018}, author={Anı, Amechi Kingsley and Ezeugwu, Felix and Ochın, Ebere}, keywords={chrysene,chrysene}, abstract={<p> </p> <p class="MsoNormal" style="text-align:justify;"> <span style="font-size:12pt;line-height:115%;font-family:’Times New Roman’, serif;">The </span> <span style="font-size:12pt;line-height:115%;font-family:’Times New Roman’, serif;">response
surface methodology (RSM) </span> <span style="font-size:12pt;line-height:115%;font-family:’Times New Roman’, serif;">of chrysene removal was studied
using mixed microbial population. The effects of process factors such as </span> <span style="font-size:12pt;line-height:115%;font-family:’Times New Roman’, serif;">initial
chrysene concentration, agitation rate and pH on chrysene removal were also
investigated. Maximum chrysene removal rates of 60 and 50% were achieved at
300rpm agitation rate and pH 8, respectively. The numerical optimization
process indicated that the optimum values for agitation rate, pH and initial
chrysene concentration were </span> <span style="font-size:12pt;line-height:115%;font-family:’Times New Roman’, serif;color:#000000;">334.3rpm, 8.8 </span> <span style="font-size:12pt;line-height:115%;font-family:’Times New Roman’, serif;"> and </span> <span style="font-size:12pt;line-height:115%;font-family:’Times New Roman’, serif;color:#000000;">40.6mg/l, respectively with desirability of
0.955. </span> <span style="font-size:12pt;line-height:115%;font-family:’Times New Roman’, serif;">
The second order quadratic model was statistically significant for the chrysene
removal process with good agreement between R² (0.9642), adjusted R² (0.9320)
and predicted R² (0.8289). Finally, the results obtained from this study
highlighted the optimal conditions for chrysene removal from aqueous medium. </span> </p>}, number={3}, publisher={Gazi University}