{"title":"亚硝酸盐促进异养硝化-好氧反硝化以及EN-F2菌株对总氮的高效去除","authors":"Manman Zhang, Jiachen Wang, Dandan Li, Tengxia He, Mengping Chen, Cerong Wang, Chunxia Zheng","doi":"10.1016/j.ibiod.2024.105883","DOIUrl":null,"url":null,"abstract":"<div><p>The inhibition of heterotrophic nitrification-aerobic denitrification (HN-AD) process and low efficiency of total nitrogen conversion under nitrite stress were overcome by strain EN-F2. Results demonstrated that nitrite addition increased total nitrogen conversion to 91.36% and 87.02% for ammonium and nitrate systems, respectively, representing improvements of 5.61% and 15.41%. This enhancement is likely due to the simultaneous acceleration of cell growth, and consumption of ammonium and nitrate. Furthermore, 10 mg/L of hydroxylamine could be almost completely oxidized in a wide range of environmental conditions in the presence of 50 mg/L nitrite, and 100% and 89.82% of nitrite and total nitrogen could be degraded under the conditions of 25 °C, sodium succinate, 7.40 mg/L of dissolved oxygen, C/N ratio 20, initial pH 7.40–7.80 and inoculation quantity of 0.5 × 10<sup>8</sup> CFU/mL. Altogether, the HN-AD performance of strain EN-F2 can be promoted by nitrite, and no nitrate and hydroxylamine accumulation were found.</p></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"195 ","pages":"Article 105883"},"PeriodicalIF":4.1000,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Promotion of heterotrophic nitrification-aerobic denitrification by nitrite and efficient removal of total nitrogen of strain EN-F2\",\"authors\":\"Manman Zhang, Jiachen Wang, Dandan Li, Tengxia He, Mengping Chen, Cerong Wang, Chunxia Zheng\",\"doi\":\"10.1016/j.ibiod.2024.105883\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The inhibition of heterotrophic nitrification-aerobic denitrification (HN-AD) process and low efficiency of total nitrogen conversion under nitrite stress were overcome by strain EN-F2. Results demonstrated that nitrite addition increased total nitrogen conversion to 91.36% and 87.02% for ammonium and nitrate systems, respectively, representing improvements of 5.61% and 15.41%. This enhancement is likely due to the simultaneous acceleration of cell growth, and consumption of ammonium and nitrate. Furthermore, 10 mg/L of hydroxylamine could be almost completely oxidized in a wide range of environmental conditions in the presence of 50 mg/L nitrite, and 100% and 89.82% of nitrite and total nitrogen could be degraded under the conditions of 25 °C, sodium succinate, 7.40 mg/L of dissolved oxygen, C/N ratio 20, initial pH 7.40–7.80 and inoculation quantity of 0.5 × 10<sup>8</sup> CFU/mL. Altogether, the HN-AD performance of strain EN-F2 can be promoted by nitrite, and no nitrate and hydroxylamine accumulation were found.</p></div>\",\"PeriodicalId\":13643,\"journal\":{\"name\":\"International Biodeterioration & Biodegradation\",\"volume\":\"195 \",\"pages\":\"Article 105883\"},\"PeriodicalIF\":4.1000,\"publicationDate\":\"2024-08-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Biodeterioration & Biodegradation\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0964830524001549\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"BIOTECHNOLOGY & APPLIED MICROBIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Biodeterioration & Biodegradation","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0964830524001549","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}
Promotion of heterotrophic nitrification-aerobic denitrification by nitrite and efficient removal of total nitrogen of strain EN-F2
The inhibition of heterotrophic nitrification-aerobic denitrification (HN-AD) process and low efficiency of total nitrogen conversion under nitrite stress were overcome by strain EN-F2. Results demonstrated that nitrite addition increased total nitrogen conversion to 91.36% and 87.02% for ammonium and nitrate systems, respectively, representing improvements of 5.61% and 15.41%. This enhancement is likely due to the simultaneous acceleration of cell growth, and consumption of ammonium and nitrate. Furthermore, 10 mg/L of hydroxylamine could be almost completely oxidized in a wide range of environmental conditions in the presence of 50 mg/L nitrite, and 100% and 89.82% of nitrite and total nitrogen could be degraded under the conditions of 25 °C, sodium succinate, 7.40 mg/L of dissolved oxygen, C/N ratio 20, initial pH 7.40–7.80 and inoculation quantity of 0.5 × 108 CFU/mL. Altogether, the HN-AD performance of strain EN-F2 can be promoted by nitrite, and no nitrate and hydroxylamine accumulation were found.
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International Biodeterioration and Biodegradation publishes original research papers and reviews on the biological causes of deterioration or degradation.
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