Author
Ram Ramachandran
Bio: Ram Ramachandran is an academic researcher. The author has contributed to research in topics: Chemical industry & Carbon fibers. The author has an hindex of 1, co-authored 1 publications receiving 462 citations.
Papers
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TL;DR: In this article, the current industrial uses of hydrogen in various industries in the industrial world will be summarized and discussed in more detail, including the use of hydrogen as a fuel in space applications, as an O2 scavenger in heat treating of metals and for its low viscosity and density.
511 citations
TL;DR: In this article , the role of amorphous carbon in the interstellar medium to form complex structures, such as carbon nanotubes/graphene/fullerene, is investigated.
4 citations
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TL;DR: In this article, a review of the current state of knowledge and technology of hydrogen production by water electrolysis and identifies areas where R&D effort is needed in order to improve this technology.
2,396 citations
TL;DR: The paper presents a survey of biological hydrogen production processes, and the microorganisms and biochemical pathways involved in hydrogen generation processes are presented in some detail.
1,915 citations
TL;DR: In this article, the key challenges that hydrogen industry are confronting are introduced and highlighted to facilitate the use of hydrogen as an alternative energy, which is considered a promising technique that can help manage hydrogen from food waste.
785 citations
TL;DR: The conversion of organics in wastewaters into hydrogen gas could serve the dual role of renewable energy production and waste reduction and the highest conversion efficiency was 46.6 mL H2/(g COD/L).
Abstract: The conversion of organics in wastewaters into hydrogen gas could serve the dual role of renewable energy production and waste reduction. The chemical energy in a sucrose rich synthetic wastewater was recovered as hydrogen gas in this study. Using fractional factorial design batch experiments, the effect of varying pH (4.5-7.5) and substrate concentration (1.5-44.8 g COD/L) and their interaction on hydrogen gas production were tested. Mixed bacterial cultures obtained from a compost pile, a potato field, and a soybean field were heated to inhibit hydrogen-consuming methanogens and to enrich sporeforming, hydrogen-producing acidogens. It was determined that the highest rate (74.7 mL H2/(L*h)) of hydrogen production occurred at a pH of 5.5 and a substrate concentration of 7.5 g COD/Lwith a conversion efficiency of 38.9 mL H2/(g COD/L). The highest conversion efficiency was 46.6 mL H2/(g COD/L).
710 citations
TL;DR: In this paper, recent developments in the production of hydrogen fuel, applications and storage together with the environmental impacts of hydrogen as energy carrier are emphasized. But, storage remains a big challenge.
Abstract: Transportation of people and commodities being a socio-economic criterion needs clean energy and the demand is kept on increasing with modernization. Consequently, generation of a fuel with safer, efficient, economic and reasonably environmental friendly features is the key issue towards fulfilling such demands. Hydrogen seems to be an ideal synthetic energy carrier due to its lightweight, exclusive abundance and environmentally benign oxidation product (water). However, storage remains a big challenge. In this communication, recent developments in the production of hydrogen fuel, applications and storage together with the environmental impacts of hydrogen as energy carrier are emphasized.
666 citations