Article

Valorisation of corncob residues to functionalised porous carbonaceous materials for the simultaneous esterification/transesterification of waste oils

Green Chemistry (Impact Factor: 6.85). 09/2011; 13(11):3162-3167. DOI: 10.1039/C1GC15908A

ABSTRACT Functionalised porous carbonaceous materials prepared from the controlled pyrolysis of corncobs were found to provide excellent activities in the simultaneous esterification/transesterification of highly acidic waste oils to biodiesel-like mixtures. Materials carbonised at 600 °C (mostly microporous) containing –SO3H groups (ca. 1 wt% S, 0.16 mmol g−1 –SO3H) exhibited the optimum yields (>95%) to fatty acid methyl esters after 6 h of reaction.

22 Followers
 · 
7,002 Views
  • [Show abstract] [Hide abstract]
    ABSTRACT: Dehydration of 1-phenylethanol to produce styrene has been studied in liquid phase without any solvent with carbon-based solid acid catalysts prepared in one step from renewable resources like d-glucose for the first time. The carbon-based catalyst shows higher styrene selectivity and lower activation energy than other solid acid catalysts that have been used so far, demonstrating that a carbon-based catalyst is very effective in producing styrene from 1-phenylethanol.
    Catalysis Communications 09/2012; 26:30–33. DOI:10.1016/j.catcom.2012.05.002 · 3.32 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Increasingly tighter regulations regarding organic waste, and the demand for renewable chemicals and fuels, are pushing the manufacturing industry toward higher sustainability to improve cost-effectiveness and meet customers’ demand. Food waste valorization is one of the current research areas that has attracted a great deal of attention over the past few years as a potential alternative to the disposal of a wide range of residues in landfill sites. In particular, the development of environmentally sound and innovative strategies to process such waste is an area of increasing importance in our current society. Landfill, incineration and composting are common, mature technologies for waste disposal. However, they are not satisfactory to treating organic waste due to the generation of toxic methane gas and bad odor, high energy consumption and slow reaction kinetics. In fact, research efforts have also been oriented on novel technologies to decompose organic waste. However, no valuable product is generated from the decomposition process. Instead of disposing and decomposing food waste, recent research has focused on its utilization as energy source (e.g., for bioethanol and biodiesel production). Organic waste is also useful to generate useful organic chemicals via biorefinery or white biotechnology (e.g., succinic acid and/or bio-plastics). This article is aimed to summarize recent development of waste valorization strategies for the sustainable production of chemicals, materials, and fuels through the development of green production strategies. It will also provide key insights into recent legislation on management of waste worldwide as well as two relevant case studies (the transformation of corncob residues into functionalized biomass-derived carbonaceous solid acids and their utilization in the production of biodiesel-like biofuels from waste oils in Philippines, as well as the development of a bakery waste based biorefinery for succinic acid and bioplastic production in Hong Kong) to illustrate the enormous potential of biowaste valorization for a more sustainable society. Future research directions and possible sustainable approaches will also be discussed with their respective proofs of concept.
    Energy Science and Engineering 09/2013; 1(2). DOI:10.1002/ese3.9
  • [Show abstract] [Hide abstract]
    ABSTRACT: Mesoporous silica SBA-15 has been functionalized with sulfonic acid to create highly powerful heterogeneous solid acid catalysts (SBA-Pr-SO3H). The catalyst can be easily removed from the reaction mixture by simple filtration, recovered and reused without significant loss of activity. In this review, the catalytic activity of sulfonic acid-functionalized SBA-15 has been widely studied.
    Journal of Molecular Catalysis A Chemical 01/2015; 397:166-191. DOI:10.1016/j.molcata.2014.10.009 · 3.68 Impact Factor

Rick Arneil Arancon