Heterotrophic Biological Denitrification Using Microbial Cellulose as Carbon Source |
| |
Authors: | Hatam Godini Abbas Rezaee Ali Khavanin Afshin Nili Ahmadabadi Sayedomid Rastegar and Hooshyar Hossini |
| |
Institution: | (1) Department of Environmental Health, Lorestan University of Medical Sciences, Khorramabad, Iran;(2) Department of Environmental Health, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran |
| |
Abstract: | The objective of this study was to investigate the feasibility of using a microbial biopolymer produced by Acetobacter xylinum as a carbon source for heterotrophic biological denitrification. The denitrification rate, COD availability and nitrite concentration
were response parameters. Under the experimental conditions, a denitrification rate of about 0.74 kg NO3
−N/m3d at 6 h retention time was achieved with microbial cellulose (MC). The reactor effluent contained significantly COD concentrations
(20–86 mg/L) so it was not carbon limited, and was receiving enough carbon to facilitate the denitrification process. The
maximum nitrite concentration in the effluent was found to be 0.4 mg/L. However, decreasing the retention time to 3 h significantly
reduced the efficiency. It can be concluded that the MC is a suitable carbon source for nitrate removal in a heterotrophic
biological denitrification process. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|