Dephenolization of stored olive-mill wastewater, using four different adsorbing matrices to attain a low-cost feedstock for hydrogen photo-production

2013 ◽  
Vol 138 ◽  
pp. 172-179 ◽  
Author(s):  
Giulia Padovani ◽  
Cristina Pintucci ◽  
Pietro Carlozzi
Keyword(s):  
Low Cost ◽  
Olive Mill Wastewater ◽  
Photo Production ◽  
Olive Mill

scholarly journals Screening of low-cost materials as heterogeneous catalysts for olive mill wastewater Fenton’s peroxidation

2020 ◽  
Vol 6 ◽  
pp. 161-167
Author(s):  
E. Domingues ◽  
F. Rodrigues ◽  
J. Gomes ◽  
M.J. Quina ◽  
S. Castro-Silva ◽  
...  
Keyword(s):  
Heterogeneous Catalysts ◽  
Low Cost ◽  
Olive Mill Wastewater ◽  
Olive Mill

Olive mill wastewater treatment using a simple zeolite-based low-cost method

2014 ◽  
Vol 145 ◽  
pp. 341-348 ◽  
Author(s):  
Anwar A. Aly ◽  
Yousef N.Y. Hasan ◽  
Abdullah S. Al-Farraj
Keyword(s):  
Wastewater Treatment ◽  
Low Cost ◽  
Olive Mill Wastewater ◽  
Olive Mill

scholarly journals Towards PHA production from wastes: The bioconversion potential of different activated sludge and food industry wastes into VFAs through acidogenic fermentation

2021 ◽  
Author(s):  
Gabriela Montiel-Jarillo ◽  
Teresa Gea ◽  
Adriana Artola ◽  
Javier Fuentes ◽  
Julián Carrera ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Low Cost ◽  
Carbon Sources ◽  
Olive Mill Wastewater ◽  
High Rate ◽  
Methanogenic Activity ◽  
Batch Tests ◽  
Acidogenic Fermentation ◽  
Pha Production ◽  
Olive Mill

Abstract Acidogenic fermentation of wastes produces volatile fatty acid (VFA)-rich streams that can be used as low-cost carbon sources for polyhydroxyalkanoate (PHA) production. In this study, an inoculum collected from an anaerobic reactor of a municipal WWTP was conditioned to suppress methanogenic activity. The heat-shock conditioning method of the inoculum proved to be more efficient than acid and alkaline conditioning methods for methanogen inhibition. Then, the pre-conditioned inoculum was used to determine the acidogenic potential of different wastes: three waste activated sludge (WAS) samples generated at different sludge retention times (SRTs, 2, 7 and 14 days), olive mill wastewater (OMW), glycerol, apple pomace (AP) and winterization oil cake (WOC). Batch tests were performed in quintuplicate at 37°C and pH 7. A higher degree of acidification was observed for high-rate activated sludge (2 days of SRT) (69%), followed by olive mill wastewater (OMW) (43%), while the lowest was for glycerol (16%). The results for the winterization oil cake (WOC) samples interestingly elucidated a high content of propionic acid with a high odd-to-even ratio (0.86) after fermentation. Feeding the VFA profile obtained from WOC into a PHA production system led to a significant production of 0.64 g PHA g− 1 C with 30% polyhydrobutyrate (PHB) to 69% polyhydroxyvalerate (PHV) as monomeric units of HB-co-HV, decoupling the need for a related carbon source for co-polymer production.

Energetic valorisation of olive mill wastewater impregnated on low cost absorbent: Sawdust versus olive solid waste

Energy ◽  
2012 ◽  
Vol 39 (1) ◽  
pp. 74-81 ◽  
Author(s):  
Ajmia Chouchene ◽  
Mejdi Jeguirim ◽  
Alain Favre-Reguillon ◽  
Gwenaelle Trouvé ◽  
Gérard Le Buzit ◽  
...  
Keyword(s):  
Solid Waste ◽  
Low Cost ◽  
Olive Mill Wastewater ◽  
Olive Mill

scholarly journals Fitting Biochars and Activated Carbons from Residues of the Olive Oil Industry as Supports of Fe- Catalysts for the Heterogeneous Fenton-Like Treatment of Simulated Olive Mill Wastewater

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 876 ◽  
Author(s):  
Bruno M. Esteves ◽  
Sergio Morales-Torres ◽  
Francisco J. Maldonado-Hódar ◽  
Luis M. Madeira
Keyword(s):  
Olive Oil ◽  
Catalyst Deactivation ◽  
Activated Carbons ◽  
Low Cost ◽  
Chemical Activation ◽  
Textural Properties ◽  
Oil Industry ◽  
Olive Mill Wastewater ◽  
Heterogeneous Fenton ◽  
Olive Mill

A series of biochars and activated carbons (ACs) was prepared combining carbonization and physical or chemical activation of cheap and abundant residues of the olive oil industry. These materials were used as Fe-support to develop low-cost catalysts for the heterogeneous Fenton-like oxidation of simulated olive mill wastewater (OMW), the highly pollutant effluent generated by this agroindustry. Commercial ACs were also used as reference. All catalysts prepared were extensively characterized and results related with their performances in the catalytic wet peroxide oxidation (CWPO). Results showed a linear relationship of the textural properties of the catalysts with the adsorptive and catalytic performance, as well as the preferential adsorption and degradation of some phenolic compounds (caffeic and gallic acids) by specific interactions with the catalysts’ surface. Despite the best performance of catalysts developed using commercial supports, those prepared from agro-industrial residues present some advantages, including a smaller catalyst deactivation by iron leaching. CWPO results show that catalysts from physically activated olive stones are the most promising materials, reaching total organic carbon and toxicity reductions of 35% and 60%, respectively, as well an efficient use of H2O2, comparable with those obtained using commercial supports. This approach showed that the optimized treatment of this type of residues will allow their integration in the circular economic process of the olive oil production.

scholarly journals A study of olive mill waste water removal by a biosorbent prepared by olive stones

2019 ◽  
Vol 8 (5) ◽  
pp. 420-434 ◽  
Author(s):  
Wafaa Yassine ◽  
Souad Zyade ◽  
Said Akazdam ◽  
Abdelhafid Essadki ◽  
Bouchaib Gourich ◽  
...  
Keyword(s):  
Low Cost ◽  
Freundlich Isotherm ◽  
Pollution Source ◽  
Olive Mill Wastewater ◽  
Order Kinetic ◽  
Olive Stones ◽  
Olive Mill Waste Water ◽  
Order Kinetic Model ◽  
Isotherm Equations ◽  
Olive Mill

In this work, olive mill wastewater (OMW) such as dyes is very toxic even present as traces in industrial wastewater effluents. It may constitute a potential pollution source of ground waters and hence it has to be eliminated. Various low cost adsorbents have been studied for their applicability in treatment of different types of effluents. In this study, the potential of activated carbon derived from Olive Stones was studied for the removal of OMW. The biosorption of OMW from aqueous solutions by Olive Stones (OLS) as a low-cost, natural and eco-friendly biosorbent was investigated and by KOH and H3PO4 treated Olive Stones (AOLS). Biosorption kinetic data were properly fitted with the pseudo-second-order kinetic model. The experimental isotherm data were analyzed using Langmuir, Freundlich isotherm equations. The best fit was obtained by the Langmuir model with a Langmuir maximum monolayer biosorption capacity of 189,83 mg/g for OMW. The biosorption was exothermic in nature (H° = -105,54 kJ/mol). The reaction was accompanied by a decrease in entropy. The Gibbs energy (G°) increased when the temperature was increased from 303 to 320 °K indicating a decrease in feasibility of biosorption at higher temperatures. The results have established good potentiality for the Olive Stones to be used as a sorbent for the removal of olive mill wastewater.

Sign in / Sign up

Export Citation Format

Share Document