Chemical Engineering

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Chemical Engineering

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Author: search.filters.author.Eterigho, E. J.

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    Biogas Production from Rumen, Municipal and Co-Digested Substrates: An Opportunity for Small and Medium Scale Entrepreneurs (SME)
    (APWEN International conference (a division of NSE) Kano, 2017-09) Habibu, Uthman; Musa, Michael Adeiza; Eterigho, E. J.
    Comparative study of anaerobic digestion of Rumen, municipal w a s t e and co-digested feedstock was investigated. 10kg each of rumen, municipal waste and co-digested feedstock each was used in a 30 litres anaerobic digester. The digester was loaded batch wise for 3 0 retention day runs up to 80% volume of the digester nominal volume. The cumulative biogas production was recorded as 181900, 217350 and 180250 ml/g VS-1 respectively. Methane composition of the various biogas was 56.42, 55.81 and 58.820 % untreated biogas samples. The treated s c r u b b e d water produced a burning gas with m e t h a n e composition 84.08,51.54 and 95.518 % respectively for the feedstock. Co-digested s u b s t r a t e d o e s n o t actually have any significant effect on production and composition of the gas produce. Since waste raise a major environmental concern, these simple steps could be exploited by small and m e d i u m scale entrepreneurs (SME), an alternative to convert waste into fuel that c a n be tremendously useful as renewable fuel source especially for domestic and industrial use.
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    Reactive-extraction of pongamia seeds for biodiesel production
    (Journal of Scientific & Industrial Research (J SCI IND RES), 2012-11-17) Porwala, Jyoti; Garga, M. O.; Savita Kaul; Harvey, A. P.; Lee, J. G. M.; Kasim, F. H.; Eterigho, E. J.; Bangwala, Dinesh
    Biodiesel (FAME) was produced from Pongamia seeds (commonly known as Karanja) by reactive-extraction. Reactiveextraction involves contacting ground seeds directly with alcohol and catalyst i.e. without intervening extraction of the vegetable oil. This process has the potential to reduce cost by removing the need for capital and running cost-intensive steps such as oil extraction of seeds. Reaction parameters such as seed size (>2 mm to <1 mm), seed/solvent ratio (wt/wt) (1:2-1:4), temperature (30-60oC) and rate of mixing (250-550 rpm) were studied. The maximum 98.5% conversion to biodiesel was achieved at: seed size (<1 mm), seed/solvent ratio (wt/wt) (1:4), rate of mixing (550 rpm) at 60 oC for 1 hr with 0.1 M catalyst (KOH) concentration, meeting International (ASTM) as well as National (BIS) specifications