According to the official document of Romania's energy policy for the period 2020-2030, with a view to 2050, the main objective of the strategy is to increase the energy sector in conditions of sustainability by setting targets for reducing greenhouse gas emissions and promoting renewable...

The production of ethanol has increased in United States and Brazil in recent years, because of incentives to reduce gas consumption. In Brazil, there is a big program to use ethanol both as a single fuel or an additive to gas. In US, the incentive is to use ethanol combined to gas in proportion...

Sustainable energy strategies require decision-makers in government, industry, academia and civil society alike to make choices among tradeoffs. Within the transport sector alone, ethanol has been shown to be the dominant solution among viable, low carbon options to date, yet questions remain...

The sectors of transport and energy are at a turning point, which is generated by various factors such as climate change, population growth and its reliance on classic fuels , the necessity of access to modern energy services for the rural population. The solution would be widespread use of...

In this paper we highlight one of alternative solutions in the manufacture of biofuel, which will replace the classical fuels who are being exhausted with harmful effects on the environment and human health. There are solutions to reduce net emissions of carbon dioxide by 70% compared to...

It presents an effective bio-butanol production with various acid hydrolysis treatment strategies H2SO4, HCI and H3PO4 (1, 2, 3, 4 and 5%) from Nannochloropsis gaditana grown under different light intensities (40, 80, 120 and 160μmolm-2 s-1). Microalgae were cultivated at 24 ± 2 with f/2...

Microalgae have been reported as a promising alternative for biofuels production. However, the use of microalgae for biofuels is still a challenge due to the intense energy use and the generation of a significant amount of biomass residues in the process. In order to analyze the environmental...

The paper aims at analysing the energy performance of an innovative multi-source energy system for residential small-scale combined heat and power (CHP) applications. The integrated system is based on an Organic Rankine Cycle (ORC) fuelled by biodiesel, a wind turbine, and a photovoltaic unit....

Xylose, arabinose and glucose were studied their fermentabilities to ethanol by yeast Pichia stipitis. The experiments were conducted by using 1.0, 5.0, 10.0 and 20.0 g/l of mono-saccharide solutions in a close fermentation system at 30 °C with 100-rpm shaking rate for 120 h. Fermentabilities...