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Upgrading of esterified bio-oil from waste coffee grounds over MgNiMo/activated charcoal in supercritical ethanol
In this work, the effect of reaction parameters such as temperature (250–375 °C), holding time (0–4 h), and bio-oil concentration (0–100 wt%) was investigated on upgrading of esterified CG-BO (CG-EBO) over MgNiMo/AC in supercritical ethanol. The esterification of CG-BO was conducted as a pretreatmen...
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Published in: | Fuel processing technology 2023-11, Vol.250, p.107915, Article 107915 |
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description | In this work, the effect of reaction parameters such as temperature (250–375 °C), holding time (0–4 h), and bio-oil concentration (0–100 wt%) was investigated on upgrading of esterified CG-BO (CG-EBO) over MgNiMo/AC in supercritical ethanol. The esterification of CG-BO was conducted as a pretreatment to minimize the esterification reaction during the catalytic upgrading in supercritical ethanol. The MgNiMo/AC catalyst was found to play two crucial roles in the supercritical upgrading of CG-EBO; firstly, it facilitated hydrogen production through the dissociation of ethanol. Secondly, it enables the hydrodeoxygenation (HDO) reactions of CG-EBO by utilizing the hydrogen generated in situ. The biofuel products obtained by the supercritical upgrading were characterized by GC–MS, FT-IR, TAN, and elemental analyses. The catalyst characterization was accomplished by SEM-EDX, XRD, BET, N2-physiosorption Isotherms, H2-TPR, and TG analyses. Optimized conditions at 375 °C, 2 h holding time, and 20 wt% CG-EBO concentration were suggested for supercritical ethanol upgrading of CG-EBO over MgNiMo catalyst. A biofuel product with 48.6 wt% yield, 44.2 mg KOH/g TAN, and 4.0 wt% oxygen content (0.07 O/C) was obtained under the conditions. Simplified reaction pathways are suggested for supercritical ethanol upgrading of CG-EBO based on the products identified.
[Display omitted]
•Bio-oil Esterification from waste coffee grounds was performed as a pretreatment.•Esterified bio-oil Upgrading was examined over MgNiMo/AC in supercritical ethanol.•A biofuel with a 4.0 wt% oxygen content was obtained at 375 °C and 2 h holding time.•Acids and esters in the bio-oil feed were effectively converted to hydrocarbons. |
doi_str_mv | 10.1016/j.fuproc.2023.107915 |
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[Display omitted]
•Bio-oil Esterification from waste coffee grounds was performed as a pretreatment.•Esterified bio-oil Upgrading was examined over MgNiMo/AC in supercritical ethanol.•A biofuel with a 4.0 wt% oxygen content was obtained at 375 °C and 2 h holding time.•Acids and esters in the bio-oil feed were effectively converted to hydrocarbons.</description><identifier>ISSN: 0378-3820</identifier><identifier>EISSN: 1873-7188</identifier><identifier>DOI: 10.1016/j.fuproc.2023.107915</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Bio-oil ; Hydrodeoxygenation ; MgNiMo catalyst ; Supercritical ethanol upgrading ; Waste coffee grounds</subject><ispartof>Fuel processing technology, 2023-11, Vol.250, p.107915, Article 107915</ispartof><rights>2023</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c306t-bd35193e1f3a1b3eaf03bb5f5d12fc56dbfc25a5c03f21f1b1c03024fb22b5743</citedby><cites>FETCH-LOGICAL-c306t-bd35193e1f3a1b3eaf03bb5f5d12fc56dbfc25a5c03f21f1b1c03024fb22b5743</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Kazmi, Wajahat Waheed</creatorcontrib><creatorcontrib>Park, Ji-Yeon</creatorcontrib><creatorcontrib>Amini, Ghazaleh</creatorcontrib><creatorcontrib>Lee, In-Gu</creatorcontrib><title>Upgrading of esterified bio-oil from waste coffee grounds over MgNiMo/activated charcoal in supercritical ethanol</title><title>Fuel processing technology</title><description>In this work, the effect of reaction parameters such as temperature (250–375 °C), holding time (0–4 h), and bio-oil concentration (0–100 wt%) was investigated on upgrading of esterified CG-BO (CG-EBO) over MgNiMo/AC in supercritical ethanol. The esterification of CG-BO was conducted as a pretreatment to minimize the esterification reaction during the catalytic upgrading in supercritical ethanol. The MgNiMo/AC catalyst was found to play two crucial roles in the supercritical upgrading of CG-EBO; firstly, it facilitated hydrogen production through the dissociation of ethanol. Secondly, it enables the hydrodeoxygenation (HDO) reactions of CG-EBO by utilizing the hydrogen generated in situ. The biofuel products obtained by the supercritical upgrading were characterized by GC–MS, FT-IR, TAN, and elemental analyses. The catalyst characterization was accomplished by SEM-EDX, XRD, BET, N2-physiosorption Isotherms, H2-TPR, and TG analyses. Optimized conditions at 375 °C, 2 h holding time, and 20 wt% CG-EBO concentration were suggested for supercritical ethanol upgrading of CG-EBO over MgNiMo catalyst. A biofuel product with 48.6 wt% yield, 44.2 mg KOH/g TAN, and 4.0 wt% oxygen content (0.07 O/C) was obtained under the conditions. Simplified reaction pathways are suggested for supercritical ethanol upgrading of CG-EBO based on the products identified.
[Display omitted]
•Bio-oil Esterification from waste coffee grounds was performed as a pretreatment.•Esterified bio-oil Upgrading was examined over MgNiMo/AC in supercritical ethanol.•A biofuel with a 4.0 wt% oxygen content was obtained at 375 °C and 2 h holding time.•Acids and esters in the bio-oil feed were effectively converted to hydrocarbons.</description><subject>Bio-oil</subject><subject>Hydrodeoxygenation</subject><subject>MgNiMo catalyst</subject><subject>Supercritical ethanol upgrading</subject><subject>Waste coffee grounds</subject><issn>0378-3820</issn><issn>1873-7188</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNp9kMtOwzAQRS0EEqXwByz8A2n9qJt0g4QqXlILG7q2_JhJXbVxsNMi_p5UYc1qRnd0rkaHkHvOJpzx-XQ3wWObopsIJmQflQuuLsiIV6UsSl5Vl2TEZFkVshLsmtzkvGOMKbUoR-Rr09bJ-NDUNCKF3EEKGMBTG2IRw55iigf6bfoDdRERgNYpHhufaTxBouv6Pazj1LgunEzXc25rkotmT0ND87GF5FLogusD6LamiftbcoVmn-Hub47J5vnpc_larD5e3paPq8JJNu8K66XiCwkcpeFWgkEmrVWoPBfo1NxbdEIZ5ZhEwZFb3m9MzNAKYVU5k2MyG3pdijknQN2mcDDpR3Omz9r0Tg_a9FmbHrT12MOAQf_bKUDS2QVoHPiQwHXax_B_wS8pT3sL</recordid><startdate>202311</startdate><enddate>202311</enddate><creator>Kazmi, Wajahat Waheed</creator><creator>Park, Ji-Yeon</creator><creator>Amini, Ghazaleh</creator><creator>Lee, In-Gu</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>202311</creationdate><title>Upgrading of esterified bio-oil from waste coffee grounds over MgNiMo/activated charcoal in supercritical ethanol</title><author>Kazmi, Wajahat Waheed ; Park, Ji-Yeon ; Amini, Ghazaleh ; Lee, In-Gu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c306t-bd35193e1f3a1b3eaf03bb5f5d12fc56dbfc25a5c03f21f1b1c03024fb22b5743</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Bio-oil</topic><topic>Hydrodeoxygenation</topic><topic>MgNiMo catalyst</topic><topic>Supercritical ethanol upgrading</topic><topic>Waste coffee grounds</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kazmi, Wajahat Waheed</creatorcontrib><creatorcontrib>Park, Ji-Yeon</creatorcontrib><creatorcontrib>Amini, Ghazaleh</creatorcontrib><creatorcontrib>Lee, In-Gu</creatorcontrib><collection>CrossRef</collection><jtitle>Fuel processing technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kazmi, Wajahat Waheed</au><au>Park, Ji-Yeon</au><au>Amini, Ghazaleh</au><au>Lee, In-Gu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Upgrading of esterified bio-oil from waste coffee grounds over MgNiMo/activated charcoal in supercritical ethanol</atitle><jtitle>Fuel processing technology</jtitle><date>2023-11</date><risdate>2023</risdate><volume>250</volume><spage>107915</spage><pages>107915-</pages><artnum>107915</artnum><issn>0378-3820</issn><eissn>1873-7188</eissn><abstract>In this work, the effect of reaction parameters such as temperature (250–375 °C), holding time (0–4 h), and bio-oil concentration (0–100 wt%) was investigated on upgrading of esterified CG-BO (CG-EBO) over MgNiMo/AC in supercritical ethanol. The esterification of CG-BO was conducted as a pretreatment to minimize the esterification reaction during the catalytic upgrading in supercritical ethanol. The MgNiMo/AC catalyst was found to play two crucial roles in the supercritical upgrading of CG-EBO; firstly, it facilitated hydrogen production through the dissociation of ethanol. Secondly, it enables the hydrodeoxygenation (HDO) reactions of CG-EBO by utilizing the hydrogen generated in situ. The biofuel products obtained by the supercritical upgrading were characterized by GC–MS, FT-IR, TAN, and elemental analyses. The catalyst characterization was accomplished by SEM-EDX, XRD, BET, N2-physiosorption Isotherms, H2-TPR, and TG analyses. Optimized conditions at 375 °C, 2 h holding time, and 20 wt% CG-EBO concentration were suggested for supercritical ethanol upgrading of CG-EBO over MgNiMo catalyst. A biofuel product with 48.6 wt% yield, 44.2 mg KOH/g TAN, and 4.0 wt% oxygen content (0.07 O/C) was obtained under the conditions. Simplified reaction pathways are suggested for supercritical ethanol upgrading of CG-EBO based on the products identified.
[Display omitted]
•Bio-oil Esterification from waste coffee grounds was performed as a pretreatment.•Esterified bio-oil Upgrading was examined over MgNiMo/AC in supercritical ethanol.•A biofuel with a 4.0 wt% oxygen content was obtained at 375 °C and 2 h holding time.•Acids and esters in the bio-oil feed were effectively converted to hydrocarbons.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.fuproc.2023.107915</doi></addata></record> |
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subjects | Bio-oil Hydrodeoxygenation MgNiMo catalyst Supercritical ethanol upgrading Waste coffee grounds |
title | Upgrading of esterified bio-oil from waste coffee grounds over MgNiMo/activated charcoal in supercritical ethanol |
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