Olive mill wastewater treatment and valorization by extraction/concentration of hydroxytyrosol and other natural phenols
[Display omitted] Olive mill wastewater (OMW) is a by-product generated from olive oil extraction systems. It contains high concentrations of organic compounds mainly phenols which cause environmental problems for the ecosystem, such as soil contamination and water pollution. Therefore, treatment of...
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| Veröffentlicht in: | Process safety and environmental protection 2021-04, Vol.148, p.495-523 |
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| creator | Azzam, Mohammed O.J. Hazaimeh, Saja A. |
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Olive mill wastewater (OMW) is a by-product generated from olive oil extraction systems. It contains high concentrations of organic compounds mainly phenols which cause environmental problems for the ecosystem, such as soil contamination and water pollution. Therefore, treatment of OMW is very much needed. Some of the naturally present chemicals in OMW have a positive economic value. In this investigation, liquid/liquid extraction using ethyl acetate (EA) as a solvent to recover such valuable compounds was investigated. Several parameters were studied namely, time of extraction, pH, EA/OMW volumetric ratio, and initial concentration of total phenols. Based on UHPLC analysis, hydroxytyrosol (HT) was the most abundant phenol in EA extracts from OMW. Many other phenols (tyrosol, oleuropein, p-coumaric acid, syringic acid, and 4-hydroxybinzoic acid) were also identified. Percentage recovery of HT reached 62 % after 2 h of extraction, at an EA/OMW ratio of 2/1 (v/v) and a pH of 2. Distribution coefficient of HT in EA was evaluated and was found to be around 0.8. The above process is envisioned to ultimately produce clean water which may be used in irrigation or in olive mills in a sustainable way. In addition, the extract is expected to have a high economic value. |
| doi_str_mv | 10.1016/j.psep.2020.10.030 |
| format | Article |
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Olive mill wastewater (OMW) is a by-product generated from olive oil extraction systems. It contains high concentrations of organic compounds mainly phenols which cause environmental problems for the ecosystem, such as soil contamination and water pollution. Therefore, treatment of OMW is very much needed. Some of the naturally present chemicals in OMW have a positive economic value. In this investigation, liquid/liquid extraction using ethyl acetate (EA) as a solvent to recover such valuable compounds was investigated. Several parameters were studied namely, time of extraction, pH, EA/OMW volumetric ratio, and initial concentration of total phenols. Based on UHPLC analysis, hydroxytyrosol (HT) was the most abundant phenol in EA extracts from OMW. Many other phenols (tyrosol, oleuropein, p-coumaric acid, syringic acid, and 4-hydroxybinzoic acid) were also identified. Percentage recovery of HT reached 62 % after 2 h of extraction, at an EA/OMW ratio of 2/1 (v/v) and a pH of 2. Distribution coefficient of HT in EA was evaluated and was found to be around 0.8. The above process is envisioned to ultimately produce clean water which may be used in irrigation or in olive mills in a sustainable way. In addition, the extract is expected to have a high economic value.</description><identifier>ISSN: 0957-5820</identifier><identifier>EISSN: 1744-3598</identifier><identifier>DOI: 10.1016/j.psep.2020.10.030</identifier><language>eng</language><publisher>Rugby: Elsevier B.V</publisher><subject>Acetic acid ; Contamination ; Coumaric acid ; Distribution coefficient ; Ethyl acetate ; Food industries wastewaters ; Food processing industry wastes ; Hexane ; Hydroxytyrosol ; Liquid-liquid extraction ; Oleuropein ; Olive oil ; Organic compounds ; p-Coumaric acid ; pH effects ; Phenols ; Sediment pollution ; Soil contamination ; Soil pollution ; Soil water ; Tyrosol ; Valorization ; Wastewater treatment ; Water pollution ; Water pollution treatment ; Water treatment</subject><ispartof>Process safety and environmental protection, 2021-04, Vol.148, p.495-523</ispartof><rights>2020 Institution of Chemical Engineers</rights><rights>Copyright Elsevier Science Ltd. Apr 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c328t-825fb377e94c67aa0b92589a8759056b76e6ebb93265f6aea5d7c6389e22a55b3</citedby><cites>FETCH-LOGICAL-c328t-825fb377e94c67aa0b92589a8759056b76e6ebb93265f6aea5d7c6389e22a55b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0957582020318255$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids></links><search><creatorcontrib>Azzam, Mohammed O.J.</creatorcontrib><creatorcontrib>Hazaimeh, Saja A.</creatorcontrib><title>Olive mill wastewater treatment and valorization by extraction/concentration of hydroxytyrosol and other natural phenols</title><title>Process safety and environmental protection</title><description>[Display omitted]
Olive mill wastewater (OMW) is a by-product generated from olive oil extraction systems. It contains high concentrations of organic compounds mainly phenols which cause environmental problems for the ecosystem, such as soil contamination and water pollution. Therefore, treatment of OMW is very much needed. Some of the naturally present chemicals in OMW have a positive economic value. In this investigation, liquid/liquid extraction using ethyl acetate (EA) as a solvent to recover such valuable compounds was investigated. Several parameters were studied namely, time of extraction, pH, EA/OMW volumetric ratio, and initial concentration of total phenols. Based on UHPLC analysis, hydroxytyrosol (HT) was the most abundant phenol in EA extracts from OMW. Many other phenols (tyrosol, oleuropein, p-coumaric acid, syringic acid, and 4-hydroxybinzoic acid) were also identified. Percentage recovery of HT reached 62 % after 2 h of extraction, at an EA/OMW ratio of 2/1 (v/v) and a pH of 2. Distribution coefficient of HT in EA was evaluated and was found to be around 0.8. The above process is envisioned to ultimately produce clean water which may be used in irrigation or in olive mills in a sustainable way. In addition, the extract is expected to have a high economic value.</description><subject>Acetic acid</subject><subject>Contamination</subject><subject>Coumaric acid</subject><subject>Distribution coefficient</subject><subject>Ethyl acetate</subject><subject>Food industries wastewaters</subject><subject>Food processing industry wastes</subject><subject>Hexane</subject><subject>Hydroxytyrosol</subject><subject>Liquid-liquid extraction</subject><subject>Oleuropein</subject><subject>Olive oil</subject><subject>Organic compounds</subject><subject>p-Coumaric acid</subject><subject>pH effects</subject><subject>Phenols</subject><subject>Sediment pollution</subject><subject>Soil contamination</subject><subject>Soil pollution</subject><subject>Soil water</subject><subject>Tyrosol</subject><subject>Valorization</subject><subject>Wastewater treatment</subject><subject>Water pollution</subject><subject>Water pollution treatment</subject><subject>Water treatment</subject><issn>0957-5820</issn><issn>1744-3598</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9kE9r3DAQxUVJIZu0XyAnQc_eSPLqj6GXEpomEMglOYuxPGa1eC1X0m7W-fSVuznnNMzMezOPHyE3nK054-p2t54STmvBxDJYs5p9ISuuN5uqlo25ICvWSF1JI9gluUppxxjjQvMVOT0P_oh074eBvkHK-AYZI80RIe9xzBTGjh5hCNG_Q_ZhpO1M8ZQjuKW7dWF0RRbPu9DT7dzFcJrzHEMKw397yNtycoR8iDDQaYtjGNI38rWHIeH3j3pNXu9_v9w9VE_Pfx7vfj1VrhYmV0bIvq21xmbjlAZgbSOkacBo2TCpWq1QYds2tVCyV4AgO-1UbRoUAqRs62vy43x3iuHvAVO2u3CIY3lphRSCG14rU1TirHIldorY2yn6PcTZcmYXwnZnF8J2IbzMCuFi-nk2Ycl_9Bhtch4Lj85HdNl2wX9m_wci-4fn</recordid><startdate>202104</startdate><enddate>202104</enddate><creator>Azzam, Mohammed O.J.</creator><creator>Hazaimeh, Saja A.</creator><general>Elsevier B.V</general><general>Elsevier Science Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7TB</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>KR7</scope><scope>SOI</scope></search><sort><creationdate>202104</creationdate><title>Olive mill wastewater treatment and valorization by extraction/concentration of hydroxytyrosol and other natural phenols</title><author>Azzam, Mohammed O.J. ; Hazaimeh, Saja A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c328t-825fb377e94c67aa0b92589a8759056b76e6ebb93265f6aea5d7c6389e22a55b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Acetic acid</topic><topic>Contamination</topic><topic>Coumaric acid</topic><topic>Distribution coefficient</topic><topic>Ethyl acetate</topic><topic>Food industries wastewaters</topic><topic>Food processing industry wastes</topic><topic>Hexane</topic><topic>Hydroxytyrosol</topic><topic>Liquid-liquid extraction</topic><topic>Oleuropein</topic><topic>Olive oil</topic><topic>Organic compounds</topic><topic>p-Coumaric acid</topic><topic>pH effects</topic><topic>Phenols</topic><topic>Sediment pollution</topic><topic>Soil contamination</topic><topic>Soil pollution</topic><topic>Soil water</topic><topic>Tyrosol</topic><topic>Valorization</topic><topic>Wastewater treatment</topic><topic>Water pollution</topic><topic>Water pollution treatment</topic><topic>Water treatment</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Azzam, Mohammed O.J.</creatorcontrib><creatorcontrib>Hazaimeh, Saja A.</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Process safety and environmental protection</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Azzam, Mohammed O.J.</au><au>Hazaimeh, Saja A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Olive mill wastewater treatment and valorization by extraction/concentration of hydroxytyrosol and other natural phenols</atitle><jtitle>Process safety and environmental protection</jtitle><date>2021-04</date><risdate>2021</risdate><volume>148</volume><spage>495</spage><epage>523</epage><pages>495-523</pages><issn>0957-5820</issn><eissn>1744-3598</eissn><abstract>[Display omitted]
Olive mill wastewater (OMW) is a by-product generated from olive oil extraction systems. It contains high concentrations of organic compounds mainly phenols which cause environmental problems for the ecosystem, such as soil contamination and water pollution. Therefore, treatment of OMW is very much needed. Some of the naturally present chemicals in OMW have a positive economic value. In this investigation, liquid/liquid extraction using ethyl acetate (EA) as a solvent to recover such valuable compounds was investigated. Several parameters were studied namely, time of extraction, pH, EA/OMW volumetric ratio, and initial concentration of total phenols. Based on UHPLC analysis, hydroxytyrosol (HT) was the most abundant phenol in EA extracts from OMW. Many other phenols (tyrosol, oleuropein, p-coumaric acid, syringic acid, and 4-hydroxybinzoic acid) were also identified. Percentage recovery of HT reached 62 % after 2 h of extraction, at an EA/OMW ratio of 2/1 (v/v) and a pH of 2. Distribution coefficient of HT in EA was evaluated and was found to be around 0.8. The above process is envisioned to ultimately produce clean water which may be used in irrigation or in olive mills in a sustainable way. In addition, the extract is expected to have a high economic value.</abstract><cop>Rugby</cop><pub>Elsevier B.V</pub><doi>10.1016/j.psep.2020.10.030</doi><tpages>29</tpages></addata></record> |
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| ispartof | Process safety and environmental protection, 2021-04, Vol.148, p.495-523 |
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| source | Elsevier ScienceDirect Journals |
| subjects | Acetic acid Contamination Coumaric acid Distribution coefficient Ethyl acetate Food industries wastewaters Food processing industry wastes Hexane Hydroxytyrosol Liquid-liquid extraction Oleuropein Olive oil Organic compounds p-Coumaric acid pH effects Phenols Sediment pollution Soil contamination Soil pollution Soil water Tyrosol Valorization Wastewater treatment Water pollution Water pollution treatment Water treatment |
| title | Olive mill wastewater treatment and valorization by extraction/concentration of hydroxytyrosol and other natural phenols |
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