Nitrate and Phosphate Removal by Co-immobilized Chlorella pyrenoidosa and Activated Sludge at Different pH Values

Autor:	Yuan Wang, Guo-Lan Huang
Rok vydání:	2003
Předmět:	chemistry.chemical_compound Activated sludge Nitrate chemistry biology Environmental chemistry Environmental engineering Chlorella pyrenoidosa Phosphate biology.organism_classification Water Science and Technology
Zdroj:	Water Quality Research Journal. 38:541-551
ISSN:	2408-9443 1201-3080
DOI:	10.2166/wqrj.2003.035
Popis:	A new immobilization method, the simplifying modified polyvinyl alcohol (PVA)-sulfate method, has been evaluated. The influence of pH value on nitrate and phosphate removal by co-immobilized Chlorella pyrenoidosa and activated sludge was studied. The results showed that the co-immobilized system was adaptable to the environment; the micro-algae reproduced rapidly inside a PVA gel carrier under pH ranging from 5.0 to 10.0. Phosphate removal efficiency of the co-immobilized system was distinctly affected by pH but nitrate removal efficiency was not affected very much. The co-immobilized system had a higher removal efficiency in the water when close to neutral. Under suitable circumstances, the removal efficiency of nitrate reached 80% in all four experimental periods; meanwhile, the highest removal efficiency of phosphate was 88% but decreased to 56% from the first period to the fourth period in the experiment.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::31687addefd5e91c6b22ccbc9aa66180 https://doi.org/10.2166/wqrj.2003.035 Zobrazit plný text záznamu