Micro-graphite particles accelerate denitrification in biological treatment systems
[Display omitted] •Low-dose MGP accelerates denitrification in synthetic and industrial wastewater.•MGP can improve the proportion of Paracoccus in a sample.•MGP can enhance the abundance of the nirS gene.•MGP has hormesis effects on denitrifying bacteria. Accelerated denitrification is an essential...
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| Veröffentlicht in: | Bioresource technology 2020-07, Vol.308, p.122935-122935, Article 122935 |
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| container_title | Bioresource technology |
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| creator | Li, Junzhang Peng, Zhaozhou Hu, Ruiyang Gao, Kaiyuan Shen, Chen Liu, Shouxin Liu, Runjing |
| description | [Display omitted]
•Low-dose MGP accelerates denitrification in synthetic and industrial wastewater.•MGP can improve the proportion of Paracoccus in a sample.•MGP can enhance the abundance of the nirS gene.•MGP has hormesis effects on denitrifying bacteria.
Accelerated denitrification is an essential problem in the biological treatment of nitrogenous wastewater. In this study, we report that denitrification is accelerated by micro-graphite particles (MGPs). The denitrification rate was increased by 83.4% or 11.1% in synthetic (with 0.16 g/L MGPs) or industrial nitrogenous wastewater (with 0.12 g/L MGP), respectively. The mechanism was revealed via a quantitative polymerase chain reaction (q-PCR), high-throughput sequencing, and scanning electron microscopy (SEM). The abundance of denitrifying bacteria Paracoccus in the sludge was increased by micro-graphite particles. The number of denitrifying bacteria with the nirS gene was increased significantly (75.6%). To the best of our knowledge, this is the first report that MGP could enhance denitrification via the sludge. MGP can denitrify in industrial applications. |
| doi_str_mv | 10.1016/j.biortech.2020.122935 |
| format | Article |
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•Low-dose MGP accelerates denitrification in synthetic and industrial wastewater.•MGP can improve the proportion of Paracoccus in a sample.•MGP can enhance the abundance of the nirS gene.•MGP has hormesis effects on denitrifying bacteria.
Accelerated denitrification is an essential problem in the biological treatment of nitrogenous wastewater. In this study, we report that denitrification is accelerated by micro-graphite particles (MGPs). The denitrification rate was increased by 83.4% or 11.1% in synthetic (with 0.16 g/L MGPs) or industrial nitrogenous wastewater (with 0.12 g/L MGP), respectively. The mechanism was revealed via a quantitative polymerase chain reaction (q-PCR), high-throughput sequencing, and scanning electron microscopy (SEM). The abundance of denitrifying bacteria Paracoccus in the sludge was increased by micro-graphite particles. The number of denitrifying bacteria with the nirS gene was increased significantly (75.6%). To the best of our knowledge, this is the first report that MGP could enhance denitrification via the sludge. MGP can denitrify in industrial applications.</description><identifier>ISSN: 0960-8524</identifier><identifier>EISSN: 1873-2976</identifier><identifier>DOI: 10.1016/j.biortech.2020.122935</identifier><identifier>PMID: 32247947</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Accelerated denitrification ; Bacteria ; Bioreactors ; Denitrification ; Graphite ; Industrial wastewater ; Micro-graphite particles ; Nitrogen ; Sewage ; Toxicity of graphite ; Waste Water</subject><ispartof>Bioresource technology, 2020-07, Vol.308, p.122935-122935, Article 122935</ispartof><rights>2020</rights><rights>Copyright © 2020. Published by Elsevier Ltd.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c368t-cc1bb615f65d6c9ebae2b919a6e30eff863b4795728f768628f972e1219de7623</citedby><cites>FETCH-LOGICAL-c368t-cc1bb615f65d6c9ebae2b919a6e30eff863b4795728f768628f972e1219de7623</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.biortech.2020.122935$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,778,782,3539,27907,27908,45978</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/32247947$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Junzhang</creatorcontrib><creatorcontrib>Peng, Zhaozhou</creatorcontrib><creatorcontrib>Hu, Ruiyang</creatorcontrib><creatorcontrib>Gao, Kaiyuan</creatorcontrib><creatorcontrib>Shen, Chen</creatorcontrib><creatorcontrib>Liu, Shouxin</creatorcontrib><creatorcontrib>Liu, Runjing</creatorcontrib><title>Micro-graphite particles accelerate denitrification in biological treatment systems</title><title>Bioresource technology</title><addtitle>Bioresour Technol</addtitle><description>[Display omitted]
•Low-dose MGP accelerates denitrification in synthetic and industrial wastewater.•MGP can improve the proportion of Paracoccus in a sample.•MGP can enhance the abundance of the nirS gene.•MGP has hormesis effects on denitrifying bacteria.
Accelerated denitrification is an essential problem in the biological treatment of nitrogenous wastewater. In this study, we report that denitrification is accelerated by micro-graphite particles (MGPs). The denitrification rate was increased by 83.4% or 11.1% in synthetic (with 0.16 g/L MGPs) or industrial nitrogenous wastewater (with 0.12 g/L MGP), respectively. The mechanism was revealed via a quantitative polymerase chain reaction (q-PCR), high-throughput sequencing, and scanning electron microscopy (SEM). The abundance of denitrifying bacteria Paracoccus in the sludge was increased by micro-graphite particles. The number of denitrifying bacteria with the nirS gene was increased significantly (75.6%). To the best of our knowledge, this is the first report that MGP could enhance denitrification via the sludge. MGP can denitrify in industrial applications.</description><subject>Accelerated denitrification</subject><subject>Bacteria</subject><subject>Bioreactors</subject><subject>Denitrification</subject><subject>Graphite</subject><subject>Industrial wastewater</subject><subject>Micro-graphite particles</subject><subject>Nitrogen</subject><subject>Sewage</subject><subject>Toxicity of graphite</subject><subject>Waste Water</subject><issn>0960-8524</issn><issn>1873-2976</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkEtPwzAQhC0EoqXwF6ocuaT4kdjxDVTxkoo4AGfLcTatq7ywXaT-e1yl5cpppdHszs6H0JzgBcGE320Xpe1dALNZUEyjSKlk-RmakkKwlErBz9EUS47TIqfZBF15v8UYMyLoJZowSjMhMzFFH2_WuD5dOz1sbIBk0C5Y04BPtDHQgNNRrKCzwdnaGh1s3yW2S2J606-j0CTBgQ4tdCHxex-g9dfootaNh5vjnKGvp8fP5Uu6en9-XT6sUsN4EVJjSFlyktc8r7iRUGqgpSRSc2AY6rrgrIxf5oIWteAFj0MKCoQSWYHglM3Q7Xh3cP33DnxQrfXx6UZ30O-8oqzgGctxRqKVj9ZY1nsHtRqcbbXbK4LVAajaqhNQdQCqRqBxcX7M2JUtVH9rJ4LRcD8aIDb9seCUNxY6A5V1YIKqevtfxi-BhIux</recordid><startdate>202007</startdate><enddate>202007</enddate><creator>Li, Junzhang</creator><creator>Peng, Zhaozhou</creator><creator>Hu, Ruiyang</creator><creator>Gao, Kaiyuan</creator><creator>Shen, Chen</creator><creator>Liu, Shouxin</creator><creator>Liu, Runjing</creator><general>Elsevier Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>202007</creationdate><title>Micro-graphite particles accelerate denitrification in biological treatment systems</title><author>Li, Junzhang ; Peng, Zhaozhou ; Hu, Ruiyang ; Gao, Kaiyuan ; Shen, Chen ; Liu, Shouxin ; Liu, Runjing</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c368t-cc1bb615f65d6c9ebae2b919a6e30eff863b4795728f768628f972e1219de7623</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Accelerated denitrification</topic><topic>Bacteria</topic><topic>Bioreactors</topic><topic>Denitrification</topic><topic>Graphite</topic><topic>Industrial wastewater</topic><topic>Micro-graphite particles</topic><topic>Nitrogen</topic><topic>Sewage</topic><topic>Toxicity of graphite</topic><topic>Waste Water</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Junzhang</creatorcontrib><creatorcontrib>Peng, Zhaozhou</creatorcontrib><creatorcontrib>Hu, Ruiyang</creatorcontrib><creatorcontrib>Gao, Kaiyuan</creatorcontrib><creatorcontrib>Shen, Chen</creatorcontrib><creatorcontrib>Liu, Shouxin</creatorcontrib><creatorcontrib>Liu, Runjing</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Bioresource technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Junzhang</au><au>Peng, Zhaozhou</au><au>Hu, Ruiyang</au><au>Gao, Kaiyuan</au><au>Shen, Chen</au><au>Liu, Shouxin</au><au>Liu, Runjing</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Micro-graphite particles accelerate denitrification in biological treatment systems</atitle><jtitle>Bioresource technology</jtitle><addtitle>Bioresour Technol</addtitle><date>2020-07</date><risdate>2020</risdate><volume>308</volume><spage>122935</spage><epage>122935</epage><pages>122935-122935</pages><artnum>122935</artnum><issn>0960-8524</issn><eissn>1873-2976</eissn><abstract>[Display omitted]
•Low-dose MGP accelerates denitrification in synthetic and industrial wastewater.•MGP can improve the proportion of Paracoccus in a sample.•MGP can enhance the abundance of the nirS gene.•MGP has hormesis effects on denitrifying bacteria.
Accelerated denitrification is an essential problem in the biological treatment of nitrogenous wastewater. In this study, we report that denitrification is accelerated by micro-graphite particles (MGPs). The denitrification rate was increased by 83.4% or 11.1% in synthetic (with 0.16 g/L MGPs) or industrial nitrogenous wastewater (with 0.12 g/L MGP), respectively. The mechanism was revealed via a quantitative polymerase chain reaction (q-PCR), high-throughput sequencing, and scanning electron microscopy (SEM). The abundance of denitrifying bacteria Paracoccus in the sludge was increased by micro-graphite particles. The number of denitrifying bacteria with the nirS gene was increased significantly (75.6%). To the best of our knowledge, this is the first report that MGP could enhance denitrification via the sludge. MGP can denitrify in industrial applications.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>32247947</pmid><doi>10.1016/j.biortech.2020.122935</doi><tpages>1</tpages></addata></record> |
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| subjects | Accelerated denitrification Bacteria Bioreactors Denitrification Graphite Industrial wastewater Micro-graphite particles Nitrogen Sewage Toxicity of graphite Waste Water |
| title | Micro-graphite particles accelerate denitrification in biological treatment systems |
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