| Home | E-Submission | Sitemap | Contact Us |  
Environmental Engineering Research 2005;10(5): 227-238. DOI: https://doi.org/10.4491/eer.2005.10.5.227
CHARACTERISTICS OF A WATER-PURIFICATION SYSTEM USING IMMOBILIZED PHOTOSYNTHETIC BACTERIA BEADS
Joong Kyun Kim1, Kyoung Joo Park1, Kyoung Sook Cho1, Soo Wan Nam2, and Yong Ha Kim3
1Division of Food Science and Biotechnology Pukyong National University, Pusan 608-737, Korea
2Department of Biotechnology and Bioengineering, Dong-Eui University, Pusan 614-714, Korea
3Division of Chemical Engineering, Pukyong National University, Pusan 608-737, Korea
Corresponding Author: Joong Kyun Kim ,Tel: +82-51-620-6186, Fax: +82-51-620-6180 , Email: junekim@pknu.ac.kr
Received: May 15, 2005;  Accepted: October 11, 2005.
Share :  
ABSTRACT
The characteristics of nitrogen removal by the free cell and the immobilized cell of R. capsulalus were investigated. Denitrification by ft. capsulalus cells resulted in reduction of ORP with the rapid depletion of DO and the increase of pH. Without accumulation of nitrite, the removal efficiencies of NOs'-N for the free cell and the immobilized cell were 99.1 and 99.3%, respectively. During the three-month experiment of goldfish breeding equipped with a water-purification biofilter, the average values of pH and total cell numbers present in an aquarium were not significantly different between water-purification system and the control. The average concentrations of NH4 -N and PCV'-P in water-purification system were relatively low, compared to that in the control. Goldfish died at 11th, 16,h, 43rii, and 67lh days in the control, while goldfish died at I0lh, 20lh, and 39* days in the water-purification system. On the days of goldfish's death, the total concentrations of nitrogenous compounds except for NO2-N were higher than those on the other days of the experiment, especially with the concentrations of NH4 -N ranging from 7.4 to 13.5 mg/I.. The water-purification system also showed the less turbidity of water with more active movement of goldfish than the control. PVA gel beads showed almost the full denitrifying ability even after the long-term experiment. As a result, the water-purification system was effective to remove nitrogenous compounds with better survival of goldfish.
Keywords: Water purification | Photosynthetic bacteria | Immobilized cell. Nitrogen removal
TOOLS
PDF Links  PDF Links
Full text via DOI  Full text via DOI
Download Citation  Download Citation
  E-Mail
Share:      
METRICS
1
Crossref
0
Scopus
2,738
View
13
Download
Editorial Office
464 Cheongpa-ro, #726, Jung-gu, Seoul 04510, Republic of Korea
TEL : +82-2-383-9697   FAX : +82-2-383-9654   E-mail : eer@kosenv.or.kr

Copyright© Korean Society of Environmental Engineers.        Developed in M2PI
About |  Browse Articles |  Current Issue |  For Authors and Reviewers