The copper complexation ability of a synthetic humic-like acid formed by an abiotic humification process and the effect of experimental factors on its copper complexation ability
Humic acids have an important impact on the distribution, toxicity, and bioavailability of hazardous metals in the environment. In this study, a synthetic humic-like acid (SHLA) was prepared by an abiotic humification process using catechol and glycine as humic precursors and a MnO 2 catalyst. The e...
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description | Humic acids have an important impact on the distribution, toxicity, and bioavailability of hazardous metals in the environment. In this study, a synthetic humic-like acid (SHLA) was prepared by an abiotic humification process using catechol and glycine as humic precursors and a MnO
2
catalyst. The effect of physico-chemical conditions (ionic strength from 0.01 to 0.5 M NaNO
3
, pH from 4 to 8, temperature from 25 to 45 °C, and humic acid concentration from 5 to 100 mg/L) on the complexation ability of SHLA for Cu
2+
were investigated. A commercial humic acid (CHA, CAS: 1415-93-6) from Sigma-Aldrich was also studied for comparison. The results showed that for pH 4 to 8, the conditional stability constants (log K) of SHLA and CHA were in the range 5.63–8.62 and 4.87–6.23, respectively, and complexation capacities (CC) were 1.34–2.61 and 1.42–2.31 mmol/g, respectively. The Cu complexation ability of SHLA was higher than that of the CHA due to its higher number of acidic functional groups (SHLA 19.19 mmol/g; CHA 3.87 mmol/g), extent of humification and aromaticity (AL/AR: 0.333 (SHLA); 1.554 (CHA)), and O-alkyl functional groups (SHLA 15.56%; CHA 3.45%). The log K and complexation efficiency (fraction of metal bound to SHLA) of SHLA were higher at higher pH, lower ionic strength, higher temperature, and higher SHLA concentration. Overall, SHLA was a good and promising complexation agent for copper in both soil washing of copper contaminated soil and the treatment of copper-containing wastewater. |
doi_str_mv | 10.1007/s11356-018-1836-2 |
format | Article |
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2
catalyst. The effect of physico-chemical conditions (ionic strength from 0.01 to 0.5 M NaNO
3
, pH from 4 to 8, temperature from 25 to 45 °C, and humic acid concentration from 5 to 100 mg/L) on the complexation ability of SHLA for Cu
2+
were investigated. A commercial humic acid (CHA, CAS: 1415-93-6) from Sigma-Aldrich was also studied for comparison. The results showed that for pH 4 to 8, the conditional stability constants (log K) of SHLA and CHA were in the range 5.63–8.62 and 4.87–6.23, respectively, and complexation capacities (CC) were 1.34–2.61 and 1.42–2.31 mmol/g, respectively. The Cu complexation ability of SHLA was higher than that of the CHA due to its higher number of acidic functional groups (SHLA 19.19 mmol/g; CHA 3.87 mmol/g), extent of humification and aromaticity (AL/AR: 0.333 (SHLA); 1.554 (CHA)), and O-alkyl functional groups (SHLA 15.56%; CHA 3.45%). The log K and complexation efficiency (fraction of metal bound to SHLA) of SHLA were higher at higher pH, lower ionic strength, higher temperature, and higher SHLA concentration. Overall, SHLA was a good and promising complexation agent for copper in both soil washing of copper contaminated soil and the treatment of copper-containing wastewater.</description><identifier>ISSN: 0944-1344</identifier><identifier>EISSN: 1614-7499</identifier><identifier>DOI: 10.1007/s11356-018-1836-2</identifier><identifier>PMID: 29582332</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Acids ; Aquatic Pollution ; Aromaticity ; Atmospheric Protection/Air Quality Control/Air Pollution ; Bioavailability ; Catechol ; Complexation ; Copper ; Copper - analysis ; Copper - chemistry ; Copper industry wastewaters ; Earth and Environmental Science ; Ecotoxicology ; Environment ; Environmental Chemistry ; Environmental Health ; Environmental science ; Functional groups ; Glycine ; Hazardous areas ; Heavy metals ; High temperature ; Humic acids ; Humic Substances - analysis ; Humification ; Ionic strength ; Ions ; Manganese dioxide ; Osmolar Concentration ; pH effects ; Research Article ; Soil ; Soil contamination ; Soil pollution ; Stability constants ; Toxicity ; Waste Water Technology ; Wastewater treatment ; Water Management ; Water Pollution Control</subject><ispartof>Environmental science and pollution research international, 2018-06, Vol.25 (16), p.15873-15884</ispartof><rights>Springer-Verlag GmbH Germany, part of Springer Nature 2018</rights><rights>Environmental Science and Pollution Research is a copyright of Springer, (2018). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c409t-61502c9c7375223cae54d2e2f63a36cc20266b0637d0f36c8e83dda15f8619313</citedby><cites>FETCH-LOGICAL-c409t-61502c9c7375223cae54d2e2f63a36cc20266b0637d0f36c8e83dda15f8619313</cites><orcidid>0000-0002-2179-6939</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11356-018-1836-2$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11356-018-1836-2$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29582332$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Yang, Ting</creatorcontrib><creatorcontrib>Hodson, Mark E.</creatorcontrib><title>The copper complexation ability of a synthetic humic-like acid formed by an abiotic humification process and the effect of experimental factors on its copper complexation ability</title><title>Environmental science and pollution research international</title><addtitle>Environ Sci Pollut Res</addtitle><addtitle>Environ Sci Pollut Res Int</addtitle><description>Humic acids have an important impact on the distribution, toxicity, and bioavailability of hazardous metals in the environment. In this study, a synthetic humic-like acid (SHLA) was prepared by an abiotic humification process using catechol and glycine as humic precursors and a MnO
2
catalyst. The effect of physico-chemical conditions (ionic strength from 0.01 to 0.5 M NaNO
3
, pH from 4 to 8, temperature from 25 to 45 °C, and humic acid concentration from 5 to 100 mg/L) on the complexation ability of SHLA for Cu
2+
were investigated. A commercial humic acid (CHA, CAS: 1415-93-6) from Sigma-Aldrich was also studied for comparison. The results showed that for pH 4 to 8, the conditional stability constants (log K) of SHLA and CHA were in the range 5.63–8.62 and 4.87–6.23, respectively, and complexation capacities (CC) were 1.34–2.61 and 1.42–2.31 mmol/g, respectively. The Cu complexation ability of SHLA was higher than that of the CHA due to its higher number of acidic functional groups (SHLA 19.19 mmol/g; CHA 3.87 mmol/g), extent of humification and aromaticity (AL/AR: 0.333 (SHLA); 1.554 (CHA)), and O-alkyl functional groups (SHLA 15.56%; CHA 3.45%). The log K and complexation efficiency (fraction of metal bound to SHLA) of SHLA were higher at higher pH, lower ionic strength, higher temperature, and higher SHLA concentration. Overall, SHLA was a good and promising complexation agent for copper in both soil washing of copper contaminated soil and the treatment of copper-containing wastewater.</description><subject>Acids</subject><subject>Aquatic Pollution</subject><subject>Aromaticity</subject><subject>Atmospheric Protection/Air Quality Control/Air Pollution</subject><subject>Bioavailability</subject><subject>Catechol</subject><subject>Complexation</subject><subject>Copper</subject><subject>Copper - analysis</subject><subject>Copper - chemistry</subject><subject>Copper industry wastewaters</subject><subject>Earth and Environmental Science</subject><subject>Ecotoxicology</subject><subject>Environment</subject><subject>Environmental Chemistry</subject><subject>Environmental Health</subject><subject>Environmental science</subject><subject>Functional groups</subject><subject>Glycine</subject><subject>Hazardous areas</subject><subject>Heavy metals</subject><subject>High temperature</subject><subject>Humic acids</subject><subject>Humic Substances - analysis</subject><subject>Humification</subject><subject>Ionic strength</subject><subject>Ions</subject><subject>Manganese dioxide</subject><subject>Osmolar Concentration</subject><subject>pH effects</subject><subject>Research Article</subject><subject>Soil</subject><subject>Soil contamination</subject><subject>Soil pollution</subject><subject>Stability constants</subject><subject>Toxicity</subject><subject>Waste Water Technology</subject><subject>Wastewater treatment</subject><subject>Water Management</subject><subject>Water Pollution Control</subject><issn>0944-1344</issn><issn>1614-7499</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9kc9OGzEQxq0K1AToA_RSWerZ1P_Wuz5WqNBKSFzSs-V4x8TpZr3YjkReq0-IwwI9ldNInu_7jWc-hD4zeskobb9lxkSjCGUdYZ1QhH9AS6aYJK3U-gQtqZaSMCHlAp3lvKWUU83bj2jBddNxIfgS_V1tALs4TZBq2U0DPNoS4ojtOgyhHHD02OJ8GMsGSnB4s98FR4bwB7B1occ-ph30eH3A9tkTX0U-uBk0pegg59rvcYVg8B5cOXLhsU4NOxiLHbC3rsSUcXWEkt_70gU69XbI8OmlnqPf1z9WVz_J7d3Nr6vvt8RJqgtRrKHcadeKtuFcOAuN7Dlwr4QVyjlOuVJrqkTbU18fOuhE31vW-E4xLZg4R19nbt3gYQ-5mG3cp7GONLyeXIpOt7Kq2KxyKeacwJup7mTTwTBqjimZOSVTLeaYkuHV8-WFvF_X6705XmOpAj4Lcm2N95D-jf4_9Qn7-aBG</recordid><startdate>20180601</startdate><enddate>20180601</enddate><creator>Yang, Ting</creator><creator>Hodson, Mark 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copper complexation ability of a synthetic humic-like acid formed by an abiotic humification process and the effect of experimental factors on its copper complexation ability</title><author>Yang, Ting ; Hodson, Mark E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c409t-61502c9c7375223cae54d2e2f63a36cc20266b0637d0f36c8e83dda15f8619313</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Acids</topic><topic>Aquatic Pollution</topic><topic>Aromaticity</topic><topic>Atmospheric Protection/Air Quality Control/Air Pollution</topic><topic>Bioavailability</topic><topic>Catechol</topic><topic>Complexation</topic><topic>Copper</topic><topic>Copper - analysis</topic><topic>Copper - chemistry</topic><topic>Copper industry wastewaters</topic><topic>Earth and Environmental Science</topic><topic>Ecotoxicology</topic><topic>Environment</topic><topic>Environmental Chemistry</topic><topic>Environmental Health</topic><topic>Environmental science</topic><topic>Functional groups</topic><topic>Glycine</topic><topic>Hazardous areas</topic><topic>Heavy metals</topic><topic>High temperature</topic><topic>Humic acids</topic><topic>Humic Substances - analysis</topic><topic>Humification</topic><topic>Ionic strength</topic><topic>Ions</topic><topic>Manganese dioxide</topic><topic>Osmolar Concentration</topic><topic>pH effects</topic><topic>Research Article</topic><topic>Soil</topic><topic>Soil contamination</topic><topic>Soil pollution</topic><topic>Stability constants</topic><topic>Toxicity</topic><topic>Waste Water Technology</topic><topic>Wastewater treatment</topic><topic>Water Management</topic><topic>Water Pollution Control</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yang, Ting</creatorcontrib><creatorcontrib>Hodson, Mark 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international</jtitle><stitle>Environ Sci Pollut Res</stitle><addtitle>Environ Sci Pollut Res Int</addtitle><date>2018-06-01</date><risdate>2018</risdate><volume>25</volume><issue>16</issue><spage>15873</spage><epage>15884</epage><pages>15873-15884</pages><issn>0944-1344</issn><eissn>1614-7499</eissn><abstract>Humic acids have an important impact on the distribution, toxicity, and bioavailability of hazardous metals in the environment. In this study, a synthetic humic-like acid (SHLA) was prepared by an abiotic humification process using catechol and glycine as humic precursors and a MnO
2
catalyst. The effect of physico-chemical conditions (ionic strength from 0.01 to 0.5 M NaNO
3
, pH from 4 to 8, temperature from 25 to 45 °C, and humic acid concentration from 5 to 100 mg/L) on the complexation ability of SHLA for Cu
2+
were investigated. A commercial humic acid (CHA, CAS: 1415-93-6) from Sigma-Aldrich was also studied for comparison. The results showed that for pH 4 to 8, the conditional stability constants (log K) of SHLA and CHA were in the range 5.63–8.62 and 4.87–6.23, respectively, and complexation capacities (CC) were 1.34–2.61 and 1.42–2.31 mmol/g, respectively. The Cu complexation ability of SHLA was higher than that of the CHA due to its higher number of acidic functional groups (SHLA 19.19 mmol/g; CHA 3.87 mmol/g), extent of humification and aromaticity (AL/AR: 0.333 (SHLA); 1.554 (CHA)), and O-alkyl functional groups (SHLA 15.56%; CHA 3.45%). The log K and complexation efficiency (fraction of metal bound to SHLA) of SHLA were higher at higher pH, lower ionic strength, higher temperature, and higher SHLA concentration. Overall, SHLA was a good and promising complexation agent for copper in both soil washing of copper contaminated soil and the treatment of copper-containing wastewater.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>29582332</pmid><doi>10.1007/s11356-018-1836-2</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0002-2179-6939</orcidid></addata></record> |
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subjects | Acids Aquatic Pollution Aromaticity Atmospheric Protection/Air Quality Control/Air Pollution Bioavailability Catechol Complexation Copper Copper - analysis Copper - chemistry Copper industry wastewaters Earth and Environmental Science Ecotoxicology Environment Environmental Chemistry Environmental Health Environmental science Functional groups Glycine Hazardous areas Heavy metals High temperature Humic acids Humic Substances - analysis Humification Ionic strength Ions Manganese dioxide Osmolar Concentration pH effects Research Article Soil Soil contamination Soil pollution Stability constants Toxicity Waste Water Technology Wastewater treatment Water Management Water Pollution Control |
title | The copper complexation ability of a synthetic humic-like acid formed by an abiotic humification process and the effect of experimental factors on its copper complexation ability |
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