Essential regulators of iron chemical speciation distributions in anaerobic digestion of pretreated food waste: Organic volatile fatty acids or inorganic acid radicals?
[Display omitted] •Volatile fatty acids dominate Fe speciation rather than inorganic acid radicals.•Residual fraction is a potentially crucial factor of Fe speciation dynamics.•Acidification causes positive correlations of volatile fatty acids and Fe speciation.•Strong alkalinity causes volatile fat...
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| Veröffentlicht in: | Bioresource technology 2019-12, Vol.293, p.122051-122051, Article 122051 |
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| container_title | Bioresource technology |
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| creator | Zhang, Chang'ai Hu, Changwei Cao, Weixing Wang, Mimi Hou, Fang Yu, Aiai Xie, Hongli Lou, Jiale Sun, Chen Liu, Ronghou |
| description | [Display omitted]
•Volatile fatty acids dominate Fe speciation rather than inorganic acid radicals.•Residual fraction is a potentially crucial factor of Fe speciation dynamics.•Acidification causes positive correlations of volatile fatty acids and Fe speciation.•Strong alkalinity causes volatile fatty acids negatively correlated to Fe speciation.
In this work, a 30-days batched mesophilic assay on pretreated food waste (PFW) under different inoculum/substrate (I/S) ratios (1:5, 1:2, 1:1, 2:1, 4:1 and 1:0) was carried out, to target the most important parameters in AD matrix on regulating iron (Fe) chemical speciation. Correlation coefficients were calculated within four Fe chemical forms and AD parameters of pH, volatile fatty acids (VFAs), inorganic acid radicals (IARs), and alkalinity. Results showed that IARs were not key factors on regulating Fe speciation. Without acidification, IARs showed weak correlations (coefficients |
| doi_str_mv | 10.1016/j.biortech.2019.122051 |
| format | Article |
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•Volatile fatty acids dominate Fe speciation rather than inorganic acid radicals.•Residual fraction is a potentially crucial factor of Fe speciation dynamics.•Acidification causes positive correlations of volatile fatty acids and Fe speciation.•Strong alkalinity causes volatile fatty acids negatively correlated to Fe speciation.
In this work, a 30-days batched mesophilic assay on pretreated food waste (PFW) under different inoculum/substrate (I/S) ratios (1:5, 1:2, 1:1, 2:1, 4:1 and 1:0) was carried out, to target the most important parameters in AD matrix on regulating iron (Fe) chemical speciation. Correlation coefficients were calculated within four Fe chemical forms and AD parameters of pH, volatile fatty acids (VFAs), inorganic acid radicals (IARs), and alkalinity. Results showed that IARs were not key factors on regulating Fe speciation. Without acidification, IARs showed weak correlations (coefficients < 0.40) with Fe chemical dynamics while other parameters showed stronger correlations (coefficients ≥ 0.60). Under acidification, VFAs initiated the conversion of exchangeable Fe into water soluble fraction. Residual fraction might play important role in regulating Fe shifting to more bioavailable states.</description><identifier>ISSN: 0960-8524</identifier><identifier>EISSN: 1873-2976</identifier><identifier>DOI: 10.1016/j.biortech.2019.122051</identifier><identifier>PMID: 31472405</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Acidification ; Bioavailability of trace elements ; Biogas production ; Iron species ; VFAs</subject><ispartof>Bioresource technology, 2019-12, Vol.293, p.122051-122051, Article 122051</ispartof><rights>2019 Elsevier Ltd</rights><rights>Copyright © 2019 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c405t-3967b5d38668322a6d5000bec3c61e00d444ac554e32184687fcb159b85fa7d23</citedby><cites>FETCH-LOGICAL-c405t-3967b5d38668322a6d5000bec3c61e00d444ac554e32184687fcb159b85fa7d23</cites><orcidid>0000-0002-7589-5481</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0960852419312817$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31472405$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhang, Chang'ai</creatorcontrib><creatorcontrib>Hu, Changwei</creatorcontrib><creatorcontrib>Cao, Weixing</creatorcontrib><creatorcontrib>Wang, Mimi</creatorcontrib><creatorcontrib>Hou, Fang</creatorcontrib><creatorcontrib>Yu, Aiai</creatorcontrib><creatorcontrib>Xie, Hongli</creatorcontrib><creatorcontrib>Lou, Jiale</creatorcontrib><creatorcontrib>Sun, Chen</creatorcontrib><creatorcontrib>Liu, Ronghou</creatorcontrib><title>Essential regulators of iron chemical speciation distributions in anaerobic digestion of pretreated food waste: Organic volatile fatty acids or inorganic acid radicals?</title><title>Bioresource technology</title><addtitle>Bioresour Technol</addtitle><description>[Display omitted]
•Volatile fatty acids dominate Fe speciation rather than inorganic acid radicals.•Residual fraction is a potentially crucial factor of Fe speciation dynamics.•Acidification causes positive correlations of volatile fatty acids and Fe speciation.•Strong alkalinity causes volatile fatty acids negatively correlated to Fe speciation.
In this work, a 30-days batched mesophilic assay on pretreated food waste (PFW) under different inoculum/substrate (I/S) ratios (1:5, 1:2, 1:1, 2:1, 4:1 and 1:0) was carried out, to target the most important parameters in AD matrix on regulating iron (Fe) chemical speciation. Correlation coefficients were calculated within four Fe chemical forms and AD parameters of pH, volatile fatty acids (VFAs), inorganic acid radicals (IARs), and alkalinity. Results showed that IARs were not key factors on regulating Fe speciation. Without acidification, IARs showed weak correlations (coefficients < 0.40) with Fe chemical dynamics while other parameters showed stronger correlations (coefficients ≥ 0.60). Under acidification, VFAs initiated the conversion of exchangeable Fe into water soluble fraction. Residual fraction might play important role in regulating Fe shifting to more bioavailable states.</description><subject>Acidification</subject><subject>Bioavailability of trace elements</subject><subject>Biogas production</subject><subject>Iron species</subject><subject>VFAs</subject><issn>0960-8524</issn><issn>1873-2976</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqFkU1v1DAQhi0EokvhL1Q-csnij9hxuACqyodUqRc4W4492XqVjZexU9R_xM_EYbdcOY0888y8fvUScsXZljOu3-23Q0xYwN9vBeP9lgvBFH9GNtx0shF9p5-TDes1a4wS7QV5lfOeMSZ5J16SC8nbTrRMbcjvm5xhLtFNFGG3TK4kzDSNNGKaqb-HQ_R1lo_goyux9kLMBeOwrI9M40zd7ADTEH0d7SD_heqBI0JBcAUCHVMK9JfLBd7TO9y5ubIPqWrFCejoSnmkzsdQdbEeTGdibVF0Yf1A_vCavBhrhTfnekl-fL75fv21ub378u36023jq5_SyF53gwrSaG2kEE4HVW0P4KXXHBgLbds6r1QLUnDTatONfuCqH4waXReEvCRvT3ePmH4u1Y49xOxhmtwMaclWCCM5M0b1FdUn1GPKGWG0R4wHh4-WM7umZPf2KSW7pmRPKdXFq7PGMhwg_Ft7iqUCH08AVKcPEdBmH2H2ECKCLzak-D-NP3qnqks</recordid><startdate>20191201</startdate><enddate>20191201</enddate><creator>Zhang, Chang'ai</creator><creator>Hu, Changwei</creator><creator>Cao, Weixing</creator><creator>Wang, Mimi</creator><creator>Hou, Fang</creator><creator>Yu, Aiai</creator><creator>Xie, Hongli</creator><creator>Lou, Jiale</creator><creator>Sun, Chen</creator><creator>Liu, Ronghou</creator><general>Elsevier Ltd</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-7589-5481</orcidid></search><sort><creationdate>20191201</creationdate><title>Essential regulators of iron chemical speciation distributions in anaerobic digestion of pretreated food waste: Organic volatile fatty acids or inorganic acid radicals?</title><author>Zhang, Chang'ai ; Hu, Changwei ; Cao, Weixing ; Wang, Mimi ; Hou, Fang ; Yu, Aiai ; Xie, Hongli ; Lou, Jiale ; Sun, Chen ; Liu, Ronghou</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c405t-3967b5d38668322a6d5000bec3c61e00d444ac554e32184687fcb159b85fa7d23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Acidification</topic><topic>Bioavailability of trace elements</topic><topic>Biogas production</topic><topic>Iron species</topic><topic>VFAs</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Chang'ai</creatorcontrib><creatorcontrib>Hu, Changwei</creatorcontrib><creatorcontrib>Cao, Weixing</creatorcontrib><creatorcontrib>Wang, Mimi</creatorcontrib><creatorcontrib>Hou, Fang</creatorcontrib><creatorcontrib>Yu, Aiai</creatorcontrib><creatorcontrib>Xie, Hongli</creatorcontrib><creatorcontrib>Lou, Jiale</creatorcontrib><creatorcontrib>Sun, Chen</creatorcontrib><creatorcontrib>Liu, Ronghou</creatorcontrib><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>Zhang, Chang'ai</au><au>Hu, Changwei</au><au>Cao, Weixing</au><au>Wang, Mimi</au><au>Hou, Fang</au><au>Yu, Aiai</au><au>Xie, Hongli</au><au>Lou, Jiale</au><au>Sun, Chen</au><au>Liu, Ronghou</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Essential regulators of iron chemical speciation distributions in anaerobic digestion of pretreated food waste: Organic volatile fatty acids or inorganic acid radicals?</atitle><jtitle>Bioresource technology</jtitle><addtitle>Bioresour Technol</addtitle><date>2019-12-01</date><risdate>2019</risdate><volume>293</volume><spage>122051</spage><epage>122051</epage><pages>122051-122051</pages><artnum>122051</artnum><issn>0960-8524</issn><eissn>1873-2976</eissn><abstract>[Display omitted]
•Volatile fatty acids dominate Fe speciation rather than inorganic acid radicals.•Residual fraction is a potentially crucial factor of Fe speciation dynamics.•Acidification causes positive correlations of volatile fatty acids and Fe speciation.•Strong alkalinity causes volatile fatty acids negatively correlated to Fe speciation.
In this work, a 30-days batched mesophilic assay on pretreated food waste (PFW) under different inoculum/substrate (I/S) ratios (1:5, 1:2, 1:1, 2:1, 4:1 and 1:0) was carried out, to target the most important parameters in AD matrix on regulating iron (Fe) chemical speciation. Correlation coefficients were calculated within four Fe chemical forms and AD parameters of pH, volatile fatty acids (VFAs), inorganic acid radicals (IARs), and alkalinity. Results showed that IARs were not key factors on regulating Fe speciation. Without acidification, IARs showed weak correlations (coefficients < 0.40) with Fe chemical dynamics while other parameters showed stronger correlations (coefficients ≥ 0.60). Under acidification, VFAs initiated the conversion of exchangeable Fe into water soluble fraction. Residual fraction might play important role in regulating Fe shifting to more bioavailable states.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>31472405</pmid><doi>10.1016/j.biortech.2019.122051</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0002-7589-5481</orcidid></addata></record> |
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| ispartof | Bioresource technology, 2019-12, Vol.293, p.122051-122051, Article 122051 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Acidification Bioavailability of trace elements Biogas production Iron species VFAs |
| title | Essential regulators of iron chemical speciation distributions in anaerobic digestion of pretreated food waste: Organic volatile fatty acids or inorganic acid radicals? |
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