%0 Journal Article
%T Waste Cashew Apple (<i>Anacardium occidentale</i>) as Feedstock for Simultaneous Production of Two Main Ecofriendly Fuels
%A Delphine N¡¯guessan
%A Mica£¿l Bedikou
%A Verdier Abouo
%A Lamine Samagaci
%A Charlotte Ehon
%A Camara Yacouba
%A Eric Akpa
%J Journal of Power and Energy Engineering
%P 16-31
%@ 2327-5901
%D 2023
%I Scientific Research Publishing
%R 10.4236/jpee.2023.118002
%X The present work investigated an effective low-cost production of
bioethanol by the use of rejected cashew apples (CAs) in
Ivorian plantations. Fresh CAs were
cut into 8-10 mm slices and submitted to a drying cycle of two periods (for the sake
of easing their rehydration) in an oven with forced air convection. Temperature
was first set at 30˚C for 3 hours, and then
raised at 50˚C until constant weight. Drying brought about 82% weight loss, and
the dried slices were rehydrated in a ratio
of 1:4 (w/v) in warm distilled water to reconstitute a 10 Brix degree
(˚B) juice with 1.042 g/cm3 density. The sugar content of the juice was increased to 20˚B (syrup) by
thermal evaporation. The process was optimized using a response surface
methodology (RSM) by applying a central composite plan in order to minimize
heat-sensitive compound degradation. The optimal operating conditions for
temperature and time of heating were precisely 68,239˚C and 83,314 min,
respectively. The commercial baker¡¯s yeast Saccharomyces cerevisiae was used to seed the 20˚B cashew
apple syrup following a batch fermentation at 30˚C. The total alcohol content
recorded after 24 hours was 8.24