Photosynthetic Bacteria VOTO1-G Isolated from River Sediment and its Removal Capacity of Nitrogen and Phosphorus

摘要

One strain of photosynthetic bacteria, named VOTO1 -G, was isolated from river sediment by using of enrichment culture medium and further was used to test its role in the removing of nitrogen and phosphorus from wastewater in laboratory. By checking the individual morphology, colony culture characteristics, DNA sequencing and 16S rDNA gene bank. VOTO 1-G was identified as Rhodopseudomonas palustris. The removal of total nitrogen (50 %) and total phosphorus (78 %) were observed in a 25 days period with an addition of VOTO1-G at a rate of 0.1 %c (v/v). It is indicated that the screened VOTO1-G strain has the capability of purifying wastewater.