Browsing by Author "Parthiba Karthikeyan, Obulisamy"
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- Editorial: Methane: A Bioresource for Fuel and BiomoleculesPublication . Kalyuzhnaya, Marina G.; Kumaresan, Deepak; Heimann, Kirsten; Caetano, Nídia; Visvanathan, Chettiyappan; Parthiba Karthikeyan, ObulisamyMethane (CH4), a highly reduced C1 compound, is one of the long-lived atmospheric gases with high global warming potential i.e., 28–36 times that of CO2 over 100 years. The atmospheric levels of CH4 reached ∼1863 part per billions (ppb) in 2014, and annual increase of atmospheric CH4 level thereafter measured as ∼10 ppb. The CH4 is projected to drive the rise in global temperature of ∼4–6◦C by 2050, and thus it is currently considered as the main target for global climate stabilization and mitigation (COP-21, 2015). Capturing anthropogenic CH4 to produce value products is highly feasible, but the great challenge is that to tap, concentrate, purify, store, transport, and utilize the CH4 from different point emission sources is presently not economically viable.
- Sustainable energy and biorefineries from biowastesPublication . Caetano, Nídia; Balu, Alina M.; Costa, Mário; Gouveia, Luisa; Parthiba Karthikeyan, Obulisamy; Mata, TeresaWhile renewable energy is usually considered environmentally friendly, its sustainability must be demonstrated, especially when produced from biomass sources. Moreover, there is an ongoing effort towards the development of increasing circular economy models, instead of the conventional linear economy models. This movement has opened new opportunities for the sustainable production of energy from various sources, in particular from biowaste resulting from food production and consumption, a significant source of waste that needs to be properly treated instead of disposed of. This special issue of Sustainability, with the theme Sustainable Energy and Biorefineries from Biowastes, aims to publish research or review articles dealing with the energy valorization of biowaste from various sources, mainly for producing energy or energy carriers.