Here we present CVD growth of graphene on Ni and investigate the growth mechanism using isotopically labeled (13)C-ethanol as the precursor. Results show that during low-pressure alcohol catalytic CVD (LP-ACCVD), a growth time of less than 30 s yields graphene films with high surface coverage (>80%). Moreover, when isotopically labeled ethanol precursors were sequentially introduced, Raman mapp...

Based on an analysis of several case studies of alternative fuel introductions [ethanol, biodiesel, liquefied petroleum gas (LPG), compressed natural gas (CNG)], requirements for alternative fuels, vehicles, and the fueling infrastructure are postulated that are necessary for successful market implementation. Affordable vehicle technology and costcompetitive fuel were identified as the most cri...

PurposeThermodynamically, lactic acid and ethanol allow the best energy recovery among all common metabolites for methane production. The main objective of this work was to favor fermentation OFMSW better production.MethodsAs a first step, fermented using two different inocula: Yeast (Saccharomyces cerevisiae) anaerobic granular sludge from UASB wastewater treatment plant. naturally occurring m...

A sulfate-reducing vibrio was isolated from a methanogenic enrichment with choline as the sole added organic substrate. This organism was identified as a member of the genus Desulfovibrio and was designated Desulfovibrio strain G1. In a defined medium devoid of sulfate, a pure culture of Desulfovibrio strain G1 fermented choline to trimethylamine, acetate, and ethanol. In the presence of sulfat...

Most natural gas sources remain untapped as energy and chemical feedstocks. A catalyst for the selective oxidation of gaseous alkanes into more easily transported alcohols could allow these reserves to be exploited. Although catalytic alkane hydroxylation has been reported by many groups, selective conversion of ethane and methane mainly to their corresponding alcohols has yet to be demonstrate...

Treatment of domestic waste is generally carried out by activated sludge process. The waste solid sludge can be treated by various aerobic and anaerobic treatment processes. Aerobic treatment methods need space and time. Anaerobic treatments have advantages such as space utilization and production of fuel gases such as methane. Up flow anaerobic sludge digester or fluidized bed digester can be ...

Lars Angenent’s research interest includes mixed culture bioprocessing of wastes to produce energy. Currently, the Angenent laboratory studies anaerobic digestion systems to produce methane and microbial fuel cells to generate electricity from wastewater. Molecular biology methods developed in the microbial ecology or environmental microbiology fields are used to ascertain the community composi...

The effect on methanogens attached to the surface of rumen ciliate protozoa by the addition of plant extracts (pine needles and ginkgo leaves) was studied with particular reference to their effectiveness for decreasing methane emission. The plant extracts (pine needles and ginkgo leaves) were added to an in vitro fermentation incubated with rumen fluid. The microbial population including bacter...