Direct CO2 capture by alkali-dissolved cellulose and sequestration in building materials and artificial reef structures

Guillermo Reyes*, Mabel Vega-Coloma, Anna Antonova, Rubina Ajdary, Solene Jonveaux, Colleen Flanigan, Nathalie Lautenbacher, Orlando J. Rojas*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

19 Sitaatiot (Scopus)
144 Lataukset (Pure)

Abstrakti

Current carbon capture and utilization (CCU) technologies require high energy input and costly catalysts. Here, an effective pathway is offered that addresses climate action by atmospheric CO2 sequestration. Industrially relevant highly reactive alkali cellulose solutions are used as CO2 absorption media. The latter lead to mineralized cellulose materials (MCM) at a tailorable cellulose-to-mineral ratio, forming organic-inorganic viscous systems (viscosity from 102 to 107 mPa s and storage modulus from 10 to 105 Pa). CO2 absorption and conversion into calcium carbonate and associated minerals translate to maximum absorption of 6.5 gCO2 gcellulose−1, tracking inversely with cellulose loading. Cellulose lean gels are easily converted into dry powders, shown as a functional component of ceramic glazes and cementitious composites. Meanwhile, cellulose-rich gels are moldable and extrudable, yielding stone-like structures tested as artificial substrates for coral reef restoration. Life Cycle Assessment (LCA) suggests new CCU opportunities for building materials, as demonstrated in underwater deployment for coral reef ecosystem restoration.
AlkuperäiskieliEnglanti
Artikkeli2209327
Sivumäärä12
JulkaisuAdvanced Materials
Vuosikerta35
Numero11
Varhainen verkossa julkaisun päivämäärä26 tammik. 2023
DOI - pysyväislinkit
TilaJulkaistu - 16 maalisk. 2023
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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