In recent decades,third-generation(3G)biofuels have become a more attractive method of fuel production,as algae cultivation does not infringe on resources needed for food production.Additionally,algae can adapt to dif...In recent decades,third-generation(3G)biofuels have become a more attractive method of fuel production,as algae cultivation does not infringe on resources needed for food production.Additionally,algae can adapt to different environments,has high photosynthetic efficiency(CO_(2)fixation),and has a high potential for carbohydrate accumulation.The prevalence of algae worldwide demonstrates its ability to adapt to different environments and climates,proving its biodiversity and versatility.Algae can be grown in wastewater,seawater,and even sewage,thus ensuring a lower water footprint and greater energy efficiency during algal biomass production.Because of this,the optimization of 3G ethanol production appears to be an excellent alternative to mitigate environmental impacts and increase energy and food security.This critical review presents(i)the stages of cultivation and processing of micro and macroalgae;(ii)the selection of yeasts(through engineering and/or bioprospecting)to produce ethanol from these biomasses;(iii)the potential of seawater-based facilities to reduce water footprint;and(iv)the mass and energy balances of 3G ethanol production in the world energy matrix.This article is,above all,a brainstorm on the environmental viability of algae bioethanol.展开更多
基金the Coordination for the Improvement of Higher Education Personnel(CAPES)the National Council of Technological and Scientific Development(CNPq)and the Research Support Foundation of the State of Rio Grande do Sul(FAPERGS,16/2551-0000522-2,17/2551-0000893-6,19/2551-0001261-6)for the financial support+3 种基金C.Müller thanks CAPES/PNPD(88887.352933/2019-00)for a postdoctoral fellowship.M.V.Tres(308936/2017-5)G.L.Zabot(304882/2018-6)H.Treichel(305258/2018-4)L.M.Colla(305935/2017-8)thank CNPq for the productivity grants.
文摘In recent decades,third-generation(3G)biofuels have become a more attractive method of fuel production,as algae cultivation does not infringe on resources needed for food production.Additionally,algae can adapt to different environments,has high photosynthetic efficiency(CO_(2)fixation),and has a high potential for carbohydrate accumulation.The prevalence of algae worldwide demonstrates its ability to adapt to different environments and climates,proving its biodiversity and versatility.Algae can be grown in wastewater,seawater,and even sewage,thus ensuring a lower water footprint and greater energy efficiency during algal biomass production.Because of this,the optimization of 3G ethanol production appears to be an excellent alternative to mitigate environmental impacts and increase energy and food security.This critical review presents(i)the stages of cultivation and processing of micro and macroalgae;(ii)the selection of yeasts(through engineering and/or bioprospecting)to produce ethanol from these biomasses;(iii)the potential of seawater-based facilities to reduce water footprint;and(iv)the mass and energy balances of 3G ethanol production in the world energy matrix.This article is,above all,a brainstorm on the environmental viability of algae bioethanol.
