https://scholars.lib.ntu.edu.tw/handle/123456789/625409
標題: | A novel intra- and extracellular distribution pattern of elemental sulfur in Pseudomonas sp. C27-driven denitrifying sulfide removal process | 作者: | Fan K Xu X Xu F Shi J Sun K Fedorova I Ren N DUU-JONG LEE Chen C. |
關鍵字: | Denitrifying sulfide removal; Elemental sulfur; Pseudomonas sp. C27; Sulfur oxidizing bacteria | 公開日期: | 2022 | 卷: | 213 | 來源出版物: | Environmental Research | 摘要: | Pseudomonas sp. C27 can achieve the conversion of toxic sulfide to economical elemental sulfur (S0) with various electron acceptors. In this study the distribution pattern of S0 produced by C27 in denitrifying sulfide removal (DSR) process was explored. The SEM observation identified that the particle size of the biogenic S0 was at micron level. Strikingly, a novel distribution pattern of S0 was revealed that the produced S0 was not directly secreted extracellularly, but be stored temporarily in the cell interior. Pyrolysis at 65 °C for 20 min were recommended prior to S0 recovery, which could maximize the separation of extracellular polymeric substances (EPS) from C27. Furthermore, the effects of N/S molar ratio, initial sulfide concentration, and micro-oxygen condition were investigated to improve the production of S0 by C27. The highest S0 production was obtained at S/N of 3 and anaerobic condition seemed to favor the S0 production by C27. This study would provide a theoretical support for highly efficient sulfide removal as well as S0 recovery in sulfide-laden wastewater treatment. © 2022 |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131967456&doi=10.1016%2fj.envres.2022.113674&partnerID=40&md5=26f98f7a9c889d3feb2d569e980df837 https://scholars.lib.ntu.edu.tw/handle/123456789/625409 |
ISSN: | 00139351 | DOI: | 10.1016/j.envres.2022.113674 | SDG/關鍵字: | acetic acid; enzyme; nitrate; nitrogen; oxygen; sodium sulfide; sulfate; sulfide; sulfide quinone oxidoreductase; sulfur; unclassified drug; bacterium; chemical element; denitrification; pollutant removal; sulfide; sulfur; Article; bacterial genome; bacterial growth; carbohydrate analysis; denitrification; nonhuman; nucleotide sequence; oxidation; particle size; polymerization; process optimization; protein content; Pseudomonas; pyrolysis; scanning electron microscopy; spectrofluorometry; temperature; ultrasound; waste water management; whole genome sequencing |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。