title: Application of ethylene diamine tetra acetic acid degrading bacterium Burkholderia cepacia on biotreatment process.
abstract: Ethylene diamine tetra acetic acid (EDTA), the effluent of secondary biotreatment units, can be properly biodegraded by Burkholderia cepacia. Through batch degradation of EDTA, the raw wastewater of EDTA was controlled at 50 mg/L, and then nutrients was added in diluted wastewater to cultivate activated sludge, which the ratio of composition is depicted as "COD:N:P:Fe = 100:5:1:0.5". After 27 days, the removal efficiency of Fe-EDTA and COD was 100% and 92.0%, correspondingly. At the continuous process, the raw wastewater of EDTA was dictated at 166 mg/L before adding nutrients to cultivate activated sludge, in which the ratio of composition did also follow with batch process. After 22 days, the removal efficiency of Fe-EDTA and COD for experimental group was 71.46% and 62.58%, correspondingly. The results showed that the batch process was more suited for EDTA biodegradation.
authors.affiliation: Department of Cosmetic Application & Management, St. Mary's Junior College of Medicine, Nursing and Management, Yilan 26644, Taiwan, ROC. Electronic address: chenwt@smc.edu.tw.
authors.forename: Wei-Ting
authors.initials: WT
authors.lastname: Chen
authors.affiliation: Department of Safety, Health, and Environmental Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan, ROC.
authors.forename: Shu-Min
authors.initials: SM
authors.lastname: Shen
authors.affiliation: Department of Safety, Health, and Environmental Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan, ROC.
authors.forename: Chi-Min
authors.initials: CM
authors.lastname: Shu
mesh_terms: D061249:Batch Cell Culture Techniques; D001673:Biodegradation, Environmental / Q000187:drug effects; D057919:Biological Oxygen Demand Analysis; D001709:Biotechnology / Q000379:methods*; D016956:Burkholderia cepacia / Q000187:drug effects / Q000378:metabolism*; D002712:Chlorides / Q000494:pharmacology; D004492:Edetic Acid / Q000378:metabolism*; D005290:Ferric Compounds / Q000494:pharmacology; D008670:Metals / Q000032:analysis; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000302:isolation & purification
chemical_list: D002712:Chlorides; D004492:Edetic Acid; D005290:Ferric Compounds; D008670:Metals; D062065:Wastewater; D014874:Water Pollutants, Chemical; C024555:ferric chloride
keywords: Activated sludge; Batch degradation; Burkholderia cepacia; Ethylene diamine tetra acetic acid (EDTA); Nutrients