- 著者
- Osamu Otsuka Yutaka Yanaba Takeshi Yoshikawa Mitsuo Yamashita
- 出版者
- (公社)日本金属学会/(一社)軽金属学会,(一社)資源・素材学会,ナノ学会,(公社)日本金属学会,(一社)日本塑性加工学会,(公社)日本鋳造工学会,日本銅学会,(一社)日本熱処理技術協会,(一社)日本熱電学会,(一社)日本非破壊検査協会,(一社)日本溶射学会,(一社)粉体粉末冶金協会,(公社)腐食防食学会
- 雑誌
- MATERIALS TRANSACTIONS (ISSN:13459678)
- 巻号頁・発行日
- vol.57, no.7, pp.1183-1191, 2016-07-01 (Released:2016-06-25)
- 参考文献数
- 20
- 被引用文献数
- 1
A method has been developed for the recovery and recycling of selenium (Se) from Se-containing wastewater using the Se reducing bacterium, Pseudomonas stutzeri NT-I. The treatment of Se-containing wastewater with strain NT-I produced the bioselenium, which was composed mainly of organic matter and 11–14 mass% of Se. Specifically, the recovery of Se from the bioselenium by oxidizing roasting followed by wet reduction was studied. After thermodynamic calculations were performed to estimate the oxidizing behavior during roasting, experiments were conducted on the bioselenium for various roasting conditions. Selenium in the bioselenium was recovered in the form of solid SeO2 with a purity of 99% (metal basis) and a maximum yield of 97 mass% after roasting at 700℃. Wet reduction of SeO2 to metallic Se was achieved with a purity of 99% (metal basis).