The potential of by-products generated during extra-virgin olive oil (EVOO) filtration as a natural source of phenolic compounds (with demonstrated bioactivity) has been evaluated using pressurized liquid extraction (PLE) and considering mixtures of two GRAS (generally recognized as safe) solvents (ethanol and water) at temperatures ranging from 40 to 175 °C. The extracts were characterized by ...

Abstract Olive oil production generates a large amount of wastewater called olive mill wastewater. This paper presents the study effect transmembrane pressure and cross flow velocity on decrease in permeate flux different ultrafiltration membranes (material pore size) when treating two-phase (olive washing wastewater). Both semi-empirical models (Hermia adapted to tangential filtration, combine...

In this study, different microbial strains, as single and mixed-cultures, were used to ferment the pâté olive cake (POC), a by-product of oil processing. particular, strains belonging Candida boidinii, Wickerhamomyces anomalus Lactiplantibacillus plantarum used. The fermentation was carried out on diluted (3:2) POC without with glucose (2% w/v) addition. Furthermore, phenolic compounds monitore...

Plackett-Burman design was used to efficiently select important medium components affecting the lipase production by Aspergillus niger using shea butter cake as the main substrate. Out of the eleven medium components screened, six comprising of sucrose, (NH4)2SO4, Na2HPO4, MgSO4, Tween-80, and olive oil were found to contribute positively to the overall lipase production with a maximum producti...

The combustion of two non-woody types biomass (almond shells and exhausted olive cake) in a domestic boiler at different loads was studied order to evaluate their suitability as fuels. To select the optimal operating conditions (excess air, primary/secondary air ratio grate vibration), which allows for lower CO particulate matter emissions each load, statistical design experiments performed. Si...

Abstract A simple mathematical model is developed for the prediction of Metribuzin removal efficiency through adsorption using activated carbon olive-waste cake any combination input conditions. Based on earlier experimental results, factors from three independent variables (pH, initial concentration and adsorbent dose concentration) were incorporated in model. All are multiplied to derive a co...