Preparation of magnetic mesoporous silica from rice husk for aflatoxin B1 removal: Optimum process and adsorption mechanism
The liquid foodstuffs such as edible oil products remain a problem of excessive aflatoxin B1 (AFB1) content. This paper focused on the preparation of magnetic mesoporous silica (MMS) from rice husk ash for the removal of AFB1 in oil system. The MMS preparation process, adsorption conditions, structu...
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| creator | Li, Yanan Wang, Ren Chen, Zhengxing Zhao, Xiuping Luo, Xiaohu Wang, Li Li, Yongfu Teng, Fei |
| description | The liquid foodstuffs such as edible oil products remain a problem of excessive aflatoxin B1 (AFB1) content. This paper focused on the preparation of magnetic mesoporous silica (MMS) from rice husk ash for the removal of AFB1 in oil system. The MMS preparation process, adsorption conditions, structural characteristics, and adsorption mechanism were investigated. The optimum conditions for MMS preparation were pH 11.0 and 80°C for 24 h. The characterization results showed that magnetic particles were successfully embedded in the MMS and had high responsiveness to a magnetic field, which was advantageous for recyclability. The MMS had ordered uniform channels with a specific surface area of 730.98 m2/g and pore diameter of 2.43 nm. The optimum adsorption conditions were 2 h at 20°C. For AFB1 with an initial concentration of 0.2 μg/mL, the MMS adsorption capacity was 171.98 μg/g and the adsorption rate was 94.59%. The MMS adsorption isotherm fitted the Langmuir model well under the assumption of monolayer AFB1 adsorption with uniformly distributed adsorption sites on the MMS surface. The maximum amount of AFB1 adsorbed according to the Langmuir isotherm was 1118.69 μg/g. A quasi-second-order kinetic model gave a better fit to the process of AFB1 adsorption on MMS. The values of ΔH (-19.17 kJ/mol) and ΔG (-34.09, -34.61, and -35.15 kJ/mol at 283, 293, and 303 K, respectively) were negative, indicating that AFB1 adsorption on MMS was a spontaneous exothermic process. The results indicated that MMS was a promising material for AFB1 removal in oil system, and this study will serve as a guide for practical MMS applications. |
| doi_str_mv | 10.1371/journal.pone.0238837 |
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This paper focused on the preparation of magnetic mesoporous silica (MMS) from rice husk ash for the removal of AFB1 in oil system. The MMS preparation process, adsorption conditions, structural characteristics, and adsorption mechanism were investigated. The optimum conditions for MMS preparation were pH 11.0 and 80°C for 24 h. The characterization results showed that magnetic particles were successfully embedded in the MMS and had high responsiveness to a magnetic field, which was advantageous for recyclability. The MMS had ordered uniform channels with a specific surface area of 730.98 m2/g and pore diameter of 2.43 nm. The optimum adsorption conditions were 2 h at 20°C. For AFB1 with an initial concentration of 0.2 μg/mL, the MMS adsorption capacity was 171.98 μg/g and the adsorption rate was 94.59%. The MMS adsorption isotherm fitted the Langmuir model well under the assumption of monolayer AFB1 adsorption with uniformly distributed adsorption sites on the MMS surface. The maximum amount of AFB1 adsorbed according to the Langmuir isotherm was 1118.69 μg/g. A quasi-second-order kinetic model gave a better fit to the process of AFB1 adsorption on MMS. The values of ΔH (-19.17 kJ/mol) and ΔG (-34.09, -34.61, and -35.15 kJ/mol at 283, 293, and 303 K, respectively) were negative, indicating that AFB1 adsorption on MMS was a spontaneous exothermic process. The results indicated that MMS was a promising material for AFB1 removal in oil system, and this study will serve as a guide for practical MMS applications.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0238837</identifier><identifier>PMID: 32913353</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Adsorbents ; Adsorption ; Aflatoxin B1 ; Aflatoxin B1 - analysis ; Aflatoxin B1 - isolation & purification ; Aflatoxins ; Biology and Life Sciences ; Biotechnology ; Carbohydrates ; Chemical properties ; Chemical research ; Chemistry ; Composite materials ; Earth Sciences ; Edible fats and oils ; Edible oils ; Education ; Engineering ; Engineering and Technology ; Fermentation ; Food safety ; Food science ; Health aspects ; Hydrogen-Ion Concentration ; Isotherms ; Laboratories ; Magnetic fields ; Magnetic properties ; Magnetite Nanoparticles - chemistry ; Methods ; Microspheres ; Mycotoxins ; Oryza - chemistry ; Physical Sciences ; Porous materials ; Production processes ; Reagents ; Recyclability ; Research and Analysis Methods ; Rice ; Separation equipment ; Silica ; Silicon dioxide ; Silicon Dioxide - chemistry ; Surface chemistry ; Water Pollutants, Chemical - analysis ; Water Pollutants, Chemical - isolation & purification ; Water Purification - methods ; Water Purification - standards ; Zeolites</subject><ispartof>PloS one, 2020-09, Vol.15 (9), p.e0238837</ispartof><rights>COPYRIGHT 2020 Public Library of Science</rights><rights>2020 Li et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2020 Li et al 2020 Li et al</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c692t-5ed165b0d0228b7f1fc5f3804ada6bc06f74e9693b9bd1f99acf90042edc8c8e3</citedby><cites>FETCH-LOGICAL-c692t-5ed165b0d0228b7f1fc5f3804ada6bc06f74e9693b9bd1f99acf90042edc8c8e3</cites><orcidid>0000-0002-9665-6295</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7482997/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7482997/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,2096,2915,23845,27901,27902,53766,53768,79342,79343</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/32913353$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Yanan</creatorcontrib><creatorcontrib>Wang, Ren</creatorcontrib><creatorcontrib>Chen, Zhengxing</creatorcontrib><creatorcontrib>Zhao, Xiuping</creatorcontrib><creatorcontrib>Luo, Xiaohu</creatorcontrib><creatorcontrib>Wang, Li</creatorcontrib><creatorcontrib>Li, Yongfu</creatorcontrib><creatorcontrib>Teng, Fei</creatorcontrib><title>Preparation of magnetic mesoporous silica from rice husk for aflatoxin B1 removal: Optimum process and adsorption mechanism</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>The liquid foodstuffs such as edible oil products remain a problem of excessive aflatoxin B1 (AFB1) content. This paper focused on the preparation of magnetic mesoporous silica (MMS) from rice husk ash for the removal of AFB1 in oil system. The MMS preparation process, adsorption conditions, structural characteristics, and adsorption mechanism were investigated. The optimum conditions for MMS preparation were pH 11.0 and 80°C for 24 h. The characterization results showed that magnetic particles were successfully embedded in the MMS and had high responsiveness to a magnetic field, which was advantageous for recyclability. The MMS had ordered uniform channels with a specific surface area of 730.98 m2/g and pore diameter of 2.43 nm. The optimum adsorption conditions were 2 h at 20°C. For AFB1 with an initial concentration of 0.2 μg/mL, the MMS adsorption capacity was 171.98 μg/g and the adsorption rate was 94.59%. The MMS adsorption isotherm fitted the Langmuir model well under the assumption of monolayer AFB1 adsorption with uniformly distributed adsorption sites on the MMS surface. The maximum amount of AFB1 adsorbed according to the Langmuir isotherm was 1118.69 μg/g. A quasi-second-order kinetic model gave a better fit to the process of AFB1 adsorption on MMS. The values of ΔH (-19.17 kJ/mol) and ΔG (-34.09, -34.61, and -35.15 kJ/mol at 283, 293, and 303 K, respectively) were negative, indicating that AFB1 adsorption on MMS was a spontaneous exothermic process. The results indicated that MMS was a promising material for AFB1 removal in oil system, and this study will serve as a guide for practical MMS applications.</description><subject>Adsorbents</subject><subject>Adsorption</subject><subject>Aflatoxin B1</subject><subject>Aflatoxin B1 - analysis</subject><subject>Aflatoxin B1 - isolation & purification</subject><subject>Aflatoxins</subject><subject>Biology and Life Sciences</subject><subject>Biotechnology</subject><subject>Carbohydrates</subject><subject>Chemical properties</subject><subject>Chemical research</subject><subject>Chemistry</subject><subject>Composite materials</subject><subject>Earth Sciences</subject><subject>Edible fats and oils</subject><subject>Edible oils</subject><subject>Education</subject><subject>Engineering</subject><subject>Engineering and Technology</subject><subject>Fermentation</subject><subject>Food safety</subject><subject>Food science</subject><subject>Health aspects</subject><subject>Hydrogen-Ion Concentration</subject><subject>Isotherms</subject><subject>Laboratories</subject><subject>Magnetic fields</subject><subject>Magnetic properties</subject><subject>Magnetite Nanoparticles - chemistry</subject><subject>Methods</subject><subject>Microspheres</subject><subject>Mycotoxins</subject><subject>Oryza - chemistry</subject><subject>Physical Sciences</subject><subject>Porous materials</subject><subject>Production processes</subject><subject>Reagents</subject><subject>Recyclability</subject><subject>Research and Analysis Methods</subject><subject>Rice</subject><subject>Separation equipment</subject><subject>Silica</subject><subject>Silicon dioxide</subject><subject>Silicon Dioxide - chemistry</subject><subject>Surface chemistry</subject><subject>Water Pollutants, Chemical - analysis</subject><subject>Water Pollutants, Chemical - isolation & purification</subject><subject>Water Purification - methods</subject><subject>Water Purification - standards</subject><subject>Zeolites</subject><issn>1932-6203</issn><issn>1932-6203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>BENPR</sourceid><sourceid>DOA</sourceid><recordid>eNqNkl2L1DAUhoso7jr6D0QDguDFjGmSfmQvhHXxY2BhxK_bcJomnYxNU5N2WfHPm9npLlNQkFwknDznPYeXN0mepniV0iJ9vXOj76Bd9a5TK0xoWdLiXnKackqWOcH0_tH7JHkUwg7jjJZ5_jA5oYSnlGb0NPn9yasePAzGdchpZKHp1GAksiq43nk3BhRMayQg7Z1F3kiFtmP4gbTzCHQLg7s2HXqbIq-su4L2DG36wdjRot47qUJA0NUI6uB8fzPFKrmFzgT7OHmgoQ3qyXQvkm_v3329-Li83HxYX5xfLmXOybDMVJ3mWYVrTEhZFTrVMtO0xAxqyCuJc10wxXNOK17VqeYcpOYYM6JqWcpS0UXy_KDbty6IybcgCGNpxvIyurJI1geidrATvTcW_C_hwIibgvONAB9daZVgGBOoi0IWQBiRsiIVJxQULTjDUNOo9WaaNlY2rqC6wUM7E53_dGYrGnclClYSzoso8GIS8O7nqMLwj5UnqoG4lem0i2LSmiDFeU4zzCgu9lqrv1Dx1MoaGZOjTazPGl7NGiIzqOuhgTEEsf7y-f_Zzfc5-_KI3Spoh21w7bhPRJiD7ABK70LwSt85l2KxD_6tG2IffDEFP7Y9O3b9ruk26fQPa7cAYg</recordid><startdate>20200910</startdate><enddate>20200910</enddate><creator>Li, Yanan</creator><creator>Wang, Ren</creator><creator>Chen, Zhengxing</creator><creator>Zhao, Xiuping</creator><creator>Luo, Xiaohu</creator><creator>Wang, Li</creator><creator>Li, Yongfu</creator><creator>Teng, Fei</creator><general>Public Library of Science</general><general>Public Library of Science (PLoS)</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>IOV</scope><scope>ISR</scope><scope>3V.</scope><scope>7QG</scope><scope>7QL</scope><scope>7QO</scope><scope>7RV</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7TG</scope><scope>7TM</scope><scope>7U9</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB.</scope><scope>KB0</scope><scope>KL.</scope><scope>L6V</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>M7S</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>P64</scope><scope>PATMY</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>RC3</scope><scope>5PM</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0002-9665-6295</orcidid></search><sort><creationdate>20200910</creationdate><title>Preparation of magnetic mesoporous silica from rice husk for aflatoxin B1 removal: Optimum process and adsorption mechanism</title><author>Li, Yanan ; Wang, Ren ; Chen, Zhengxing ; Zhao, Xiuping ; Luo, Xiaohu ; Wang, Li ; Li, Yongfu ; Teng, Fei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c692t-5ed165b0d0228b7f1fc5f3804ada6bc06f74e9693b9bd1f99acf90042edc8c8e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Adsorbents</topic><topic>Adsorption</topic><topic>Aflatoxin B1</topic><topic>Aflatoxin B1 - 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This paper focused on the preparation of magnetic mesoporous silica (MMS) from rice husk ash for the removal of AFB1 in oil system. The MMS preparation process, adsorption conditions, structural characteristics, and adsorption mechanism were investigated. The optimum conditions for MMS preparation were pH 11.0 and 80°C for 24 h. The characterization results showed that magnetic particles were successfully embedded in the MMS and had high responsiveness to a magnetic field, which was advantageous for recyclability. The MMS had ordered uniform channels with a specific surface area of 730.98 m2/g and pore diameter of 2.43 nm. The optimum adsorption conditions were 2 h at 20°C. For AFB1 with an initial concentration of 0.2 μg/mL, the MMS adsorption capacity was 171.98 μg/g and the adsorption rate was 94.59%. The MMS adsorption isotherm fitted the Langmuir model well under the assumption of monolayer AFB1 adsorption with uniformly distributed adsorption sites on the MMS surface. The maximum amount of AFB1 adsorbed according to the Langmuir isotherm was 1118.69 μg/g. A quasi-second-order kinetic model gave a better fit to the process of AFB1 adsorption on MMS. The values of ΔH (-19.17 kJ/mol) and ΔG (-34.09, -34.61, and -35.15 kJ/mol at 283, 293, and 303 K, respectively) were negative, indicating that AFB1 adsorption on MMS was a spontaneous exothermic process. The results indicated that MMS was a promising material for AFB1 removal in oil system, and this study will serve as a guide for practical MMS applications.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>32913353</pmid><doi>10.1371/journal.pone.0238837</doi><tpages>e0238837</tpages><orcidid>https://orcid.org/0000-0002-9665-6295</orcidid><oa>free_for_read</oa></addata></record> |
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| source | Public Library of Science (PLoS) Journals Open Access; MEDLINE; DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Adsorbents Adsorption Aflatoxin B1 Aflatoxin B1 - analysis Aflatoxin B1 - isolation & purification Aflatoxins Biology and Life Sciences Biotechnology Carbohydrates Chemical properties Chemical research Chemistry Composite materials Earth Sciences Edible fats and oils Edible oils Education Engineering Engineering and Technology Fermentation Food safety Food science Health aspects Hydrogen-Ion Concentration Isotherms Laboratories Magnetic fields Magnetic properties Magnetite Nanoparticles - chemistry Methods Microspheres Mycotoxins Oryza - chemistry Physical Sciences Porous materials Production processes Reagents Recyclability Research and Analysis Methods Rice Separation equipment Silica Silicon dioxide Silicon Dioxide - chemistry Surface chemistry Water Pollutants, Chemical - analysis Water Pollutants, Chemical - isolation & purification Water Purification - methods Water Purification - standards Zeolites |
| title | Preparation of magnetic mesoporous silica from rice husk for aflatoxin B1 removal: Optimum process and adsorption mechanism |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-07T06%3A16%3A12IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-gale_plos_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Preparation%20of%20magnetic%20mesoporous%20silica%20from%20rice%20husk%20for%20aflatoxin%20B1%20removal:%20Optimum%20process%20and%20adsorption%20mechanism&rft.jtitle=PloS%20one&rft.au=Li,%20Yanan&rft.date=2020-09-10&rft.volume=15&rft.issue=9&rft.spage=e0238837&rft.pages=e0238837-&rft.issn=1932-6203&rft.eissn=1932-6203&rft_id=info:doi/10.1371/journal.pone.0238837&rft_dat=%3Cgale_plos_%3EA635043077%3C/gale_plos_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2441546805&rft_id=info:pmid/32913353&rft_galeid=A635043077&rft_doaj_id=oai_doaj_org_article_4002ad77c7a242ccb2b923ae37940ad3&rfr_iscdi=true |