{"id":4381,"date":"2023-05-22T08:18:57","date_gmt":"2023-05-22T06:18:57","guid":{"rendered":"https:\/\/gpt-dev.i3a.es\/?p=4381"},"modified":"2024-07-11T11:40:16","modified_gmt":"2024-07-11T09:40:16","slug":"javier-abrego","status":"publish","type":"post","link":"https:\/\/gpt.i3a.es\/es\/javier-abrego\/","title":{"rendered":"Javier \u00c1brego"},"content":{"rendered":"
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    GPT<\/a><\/h3>\n

    Javier \u00c1brego<\/strong><\/h1>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/li>\n\t\t<\/ul>\t\t\t\t
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      Tel\u00e9fono:<\/strong>\u00a0 +34 876555483<\/p>\n

      Email: abrego@unizar.es<\/strong><\/p>\n

      Address:<\/strong> Office 31.080 c\/Mariano Esquillor SN Edificio I+D+i, I3A, GPT Zaragoza Arag\u00f3n<\/p>\n<\/blockquote>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>\n\n

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      \n\t\t\t\t\t\tSOBRE M\u00cd\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\t\t\t\t\t\t

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      Research Interests<\/strong><\/h4>\n

      Broadly, my research focus is on pyrolysis of organic waste and biomass.\u00a0I am currently interested in the development of new and\/or improved thermochemical processes for biofuels and bioproducts.<\/p>\n

      Specifically, we are now developing a carbon-negative\u00a0pyrolysis system with autothermal operation<\/strong>. Operational tests are ongoing. We seek to further develop and scale-up this idea, ideally with an industry partner.<\/p>\n

      Simultaneously, I work in the development of integrated valorization approaches<\/a> of various agricultural or animal residues via pyrolysis, and its integration with biomethane production.<\/p>\n

      I have also collaborated in the development of the Flash Carbonization technology developed by Professor Michael J. Antal at University of Hawai’i<\/a>\u00a0as a Visiting Scholar, and worked at Instituto de Carboqu\u00edmica<\/a>\u00a0(Spanish National Research Council),\u00a0both\u00a0in postdoctoral positions.<\/p>\n

      Previously to my PhD research, I also worked in gasification<\/a> (fluidized bed and downdraft reactors) at demonstration scale.<\/p>\n<\/div>\n<\/div><\/div><\/div>

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      23 registros<\/span> «<\/a> ‹<\/a> 1 de 5 ›<\/a> »<\/a> <\/div><\/div>

      2025<\/h3>

      Navarro, \u00c1frica; Fonts, Isabel; Ruiz, Joaqu\u00edn; Ceamanos, Jes\u00fas; Gil-Lalaguna, Noem\u00ed; \u00c1brego, Javier; Gea, Gloria<\/p>

      The role of biogenic waste composition on pyrolysis: Part II \u2013 Char CO2 adsorption capacity<\/a> Art\u00edculo de revista<\/span> <\/p>

      En: <\/span>Biomass and Bioenergy, <\/span>vol. 197, <\/span>pp. 107775, <\/span>2025<\/span>, ISSN: 0961-9534<\/span>.<\/p>

      Resumen<\/a><\/span> | Enlaces<\/a><\/span> | BibTeX<\/a><\/span><\/p>

      @article{NAVARRO2025107775,
      \r\ntitle = {The role of biogenic waste composition on pyrolysis: Part II \u2013 Char CO2 adsorption capacity},
      \r\nauthor = {\u00c1frica Navarro and Isabel Fonts and Joaqu\u00edn Ruiz and Jes\u00fas Ceamanos and Noem\u00ed Gil-Lalaguna and Javier \u00c1brego and Gloria Gea},
      \r\nurl = {https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0961953425001862},
      \r\ndoi = {https:\/\/doi.org\/10.1016\/j.biombioe.2025.107775},
      \r\nissn = {0961-9534},
      \r\nyear  = {2025},
      \r\ndate = {2025-01-01},
      \r\nurldate = {2025-01-01},
      \r\njournal = {Biomass and Bioenergy},
      \r\nvolume = {197},
      \r\npages = {107775},
      \r\nabstract = {The CO2 adsorption capacities (AC) of biochars obtained at 350, 550, and 750\u00a0\u00b0C from the main organic (cellulose, lignin, and protein) and inorganic (CaCO3) macro-components of biogenic waste, as well as from co-digested manure (CDM), have been determined for different CO2 concentrations (2\u201383\u00a0vol%) at 25\u00a0\u00b0C and atmospheric pressure. CO2 adsorption isotherms have been determined using two different experimental methodologies: thermogravimetric and fixed-bed dynamic adsorption tests, yielding similar results. The composition effect has been analyzed by comparing the adsorption performance of the chars derived from individual macro-components and the potential interactions occurring during their co-pyrolysis. Lignin and cellulose-derived chars showed higher CO2 retention (\u224877\u00a0mg gbiochar\u22121) than those produced from protein (\u224840\u00a0mg gbiochar\u22121). Pyrolyzed CaCO3 exhibited negligible CO2 adsorption. For surrogate_CDM chars, prepared at pyrolysis temperatures high enough to decompose CaCO3 in the organic matrix, experimental results showed a synergistic effect, with AC between 14 % and 47 % higher than theoretical predictions. This decomposition promoted the reverse Boudouard reaction and enhanced char microporosity. However, the improvement was insufficient to offset the dilution effect caused by the high CaCO3 content. AC results have been discussed based on the biochar textural and chemical properties, with ultramicroporosity being the key factor determining adsorption capacity. The AC of CDM-derived sorbents is similar to that of cellulose-derived, expressed per gram of waste (7\u201313\u00a0mg gwaste\u22121). Furthermore, the biochars retained at least 80 % of their initial AC after 3 adsorption-desorption cycles, indicating their potential for stable CO2 capture.},
      \r\nkeywords = {},
      \r\npubstate = {published},
      \r\ntppubtype = {article}
      \r\n}
      \r\n<\/pre><\/div>
      Cerrar<\/a><\/p><\/div>
      The CO2 adsorption capacities (AC) of biochars obtained at 350, 550, and 750\u00a0\u00b0C from the main organic (cellulose, lignin, and protein) and inorganic (CaCO3) macro-components of biogenic waste, as well as from co-digested manure (CDM), have been determined for different CO2 concentrations (2\u201383\u00a0vol%) at 25\u00a0\u00b0C and atmospheric pressure. CO2 adsorption isotherms have been determined using two different experimental methodologies: thermogravimetric and fixed-bed dynamic adsorption tests, yielding similar results. The composition effect has been analyzed by comparing the adsorption performance of the chars derived from individual macro-components and the potential interactions occurring during their co-pyrolysis. Lignin and cellulose-derived chars showed higher CO2 retention (\u224877\u00a0mg gbiochar\u22121) than those produced from protein (\u224840\u00a0mg gbiochar\u22121). Pyrolyzed CaCO3 exhibited negligible CO2 adsorption. For surrogate_CDM chars, prepared at pyrolysis temperatures high enough to decompose CaCO3 in the organic matrix, experimental results showed a synergistic effect, with AC between 14 % and 47 % higher than theoretical predictions. This decomposition promoted the reverse Boudouard reaction and enhanced char microporosity. However, the improvement was insufficient to offset the dilution effect caused by the high CaCO3 content. AC results have been discussed based on the biochar textural and chemical properties, with ultramicroporosity being the key factor determining adsorption capacity. The AC of CDM-derived sorbents is similar to that of cellulose-derived, expressed per gram of waste (7\u201313\u00a0mg gwaste\u22121). Furthermore, the biochars retained at least 80 % of their initial AC after 3 adsorption-desorption cycles, indicating their potential for stable CO2 capture.<\/div>
      Cerrar<\/a><\/p><\/div>