Initial Investigation of the Solar Drying Method for the Drying of Olive Oil By-Products

Maragkaki, Angeliki; Galliou, Fenia; Markakis, Nikolaos; Sabathianakis, G.; Tsompanidis, Christos; Lolos, G.; Mavrogiannis, G.; Koukakis, G.; Lasaridi, Katia; Manios, Thrassyvoulos

doi:10.1007/s12649-016-9505-5

Cited by 16 publications

(7 citation statements)

References 32 publications

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“…On the other hand, olive pomace is a frequent waste product from agriculture in the Mediterranean region, as well as a byproduct of olive oil production. Depending on how it is extracted, olive oil can include a substantial volume of oil as well as a significant amount of moisture (Maragkaki et al, 2016). The majority of freshly generated olive pomace in Egypt is piled up near olive mills.…”

Section: Discusionmentioning

confidence: 99%

Isolation and identification of Polyhydroxybutyrate (PHB)-producing microorganisms from various sources in North Sinai

Shokr

Abd-Elsalam

Hamedo

et al. 2023

Catrina: The International Journal of Environmental Sciences

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The amount of non-biodegradable plastic waste on our planet is enormous. Natural materials like biomaterials are among the finest replacements for manmade plastics. In order to assist microorganisms resist severe environments, certain microbes generate bioplastics, which are lipid polyesters that build up as storage materials. The primary goal of this investigation was to isolate and characterize cultivable bacteria and fungi capable of producing bioplastics from North Sinai from different sources, such as saline soil, olive pomace, landfills, and seawater. Seven bacterial and five fungal isolates were selected from a total of 108 isolates to assay for PHB production and the selected isolates were stained with Sudan Black B for PHB formation, while Nile Blue A staining was used to detect the presence of PHA granules. All promising bacterial isolates with the highest PHB accumulation were identified as Halomonas, Lysinibacillus, Mesobacillus, Paracoccus, Paraliobacillus, Glutamicibacter, and Aquamicrobium; most fungal isolates were yeasts, identified as Rhodotorula, Hortaea, Meyerozyma, and Sarocladium by morphological and biochemical characterization and confirmed by molecular techniques.

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Section: Discusionmentioning

confidence: 99%

Isolation and identification of Polyhydroxybutyrate (PHB)-producing microorganisms from various sources in North Sinai

Shokr

Abd-Elsalam

Hamedo

et al. 2023

Catrina: The International Journal of Environmental Sciences

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“…No information has been found either in the available literature or in the market about solar greenhouse drying of granulated biofuels. Attempts have been made to solar dry coffee pulp (Cubero et al 2014 ) for pellet production in open area conditions or olive waste (Maragkaki et al 2016 ), wood chips (Perea-Moreno et al 2016 ), and RDF fuel (Trojanowska 2016 ) in the solar greenhouse dryers. However, the wastes were dried in a shredded form.…”

Section: Drying Of Biosolids: Thermal Vs Solarmentioning

confidence: 99%

Solar drying of granulated waste blends for dry biofuel production

Wzorek

2021

Environ Sci Pollut Res

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In the paper, results of drying biofuels from sewage sludge using solar energy are presented. Drying rates of biofuels made from sewage sludge and coal slime (PBS), sewage sludge and meat and bone meal (PBM), and sewage sludge and sawdust (PBT) with 15-mm and 35-mm granule particle size were studied. Tests were performed in a solar greenhouse dryer equipped with a specially designed mixing system. Experiments were aimed at determining the drying time of biofuels under various weather conditions in the southwestern part of Poland. In summer, in order to determine the best conditions for drying, tests were performed using various parameters, i.e., layers of various thickness, such as 5, 10, and 20 cm, and various mixing intensity (no mixing, mixing 3 and 5 times/day). In spring and the fall, 10-cm thick layers combined with 5 times mixing of fuels per day were used. The performed tests demonstrated that it is beneficial to dry fuels in 10-cm thick layer. In spring and the fall, PBS and PBM biofuels laid out in layers with just such thickness showed moisture content reduced to less than 10% after 8 days, while the PBT biofuel reached the same level after 14 days. In summer, the same result may be obtained for all the biofuels after 4 days on average. The presented original method of solar drying of biofuels obtained from sewage sludge and other waste may be used in wastewater treatment plants which process sewage sludge into fuels without incurring any additional costs for supplying heat.

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“…An interesting approach, because of the use of renewable energy, was taken by solar drying olive oil by‐products, including olive pomace, leaves, and biomass from pruning, as an initial step to produce solid biofuels. The results showed a reduction in the moisture content of the OTPB of approximately 90% after 75 days of solar drying with similar reductions for the other by‐products . Some research has examined the production of pellets.…”

Section: Research On Different Types Of Olive‐derived Biomassesmentioning

confidence: 99%

Olive‐derived biomass as a source of energy and chemicals

Ruiz

Romero‐García

Romero

et al. 2017

Biofuels Bioprod Bioref

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Olive trees are cultivated in more than 40 countries worldwide over more than 10 million hectares. In addition to olive oil, a large amount of biomass is produced annually. All this biomass must be adequately handled and disposed of. Conventional disposal methods include direct burning or spreading in fields, but this has economical costs and environmental concerns, as well as wasting a source of energy and chemicals. This review summarizes the most recent proposals for the use of biomass derived from olive tree cultivation and olive oil production processes. Biomass produced from pruning, leaves, olive stones and pomace, extracted olive pomace, and olive waste water are considered, and the main options for processing are reviewed according to recent advances in the literature. The biorefinery concept applied to olive‐derived biomass is also presented and representative works are discussed. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd

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Initial Investigation of the Solar Drying Method for the Drying of Olive Oil By-Products

Cited by 16 publications

References 32 publications

Isolation and identification of Polyhydroxybutyrate (PHB)-producing microorganisms from various sources in North Sinai

Isolation and identification of Polyhydroxybutyrate (PHB)-producing microorganisms from various sources in North Sinai

Solar drying of granulated waste blends for dry biofuel production

Olive‐derived biomass as a source of energy and chemicals

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