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Wyświetlanie 1-4 z 4
Tytuł:
Energy Valorization of Olive Mill Waste Cake – Extraction of Vegetable Oil and Transesterification
Autorzy:
Mehdaoui, Imane
Majbar, Zineb
Hassani, El Mokhtar Saoudi
Mahmoud, Rachid
Atemni, Ibrahim
Ben Abbou, Mohamed
Taleb, Mustapha
Rais, Zakia
Powiązania:
https://bibliotekanauki.pl/articles/24201716.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
olive mill waste cake
extraction
valorisation
vegetable oil
transesterification
biodiesel
Opis:
The olive mill wastewater, effluents from the trituration of olives, are treated in most Mediterranean countries by natural evaporation. However, this method of treatment is a source of air and soil pollution by the generation of solid waste, called olive mill waste cake. This work focused on extracting of vegetable oil from this by-product for biodiesel production by transesterification. The extraction took place with a Soxhlet extractor, using hexane as solvent. The vegetable oil and biodiesel were characterized by measuring the physicochemical parameters that identify them according to AFNOR standards. The extraction results show that the oil yield is 21.28%. The oil obtained is characterized by density, water and ash content, acidity, saponification, peroxide and ester. The yield of the oil esterification reaction is 86.41% or about 185 Kg of biodiesel/ton of olive mill waste cake, and in terms of energy 2783.7 MJ or 2 GW.t-1. The biodiesel produced is comparable to petroleum diesel according to EN 14214, 2013.
Źródło:
Journal of Ecological Engineering; 2023, 24, 5; 306--315
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Needles of Aleppo Pine From the Province of Taza-Morocco – A Biomaterial of Great Potential
Autorzy:
Mahmoud, Rachid
Hjouji, Kaoutar
Mehdaoui, Imane
Saoudi Hassani, El Mokhtar
Ben Abbou, Mohamed
Majbar, Zineb
Taleb, Mustapha
Rais, Zakia
Powiązania:
https://bibliotekanauki.pl/articles/2202321.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Aleppo pine
pine needle
physicochemical characterization
spectroscopic characterization
adsorbent
biomaterial
essential oil
Opis:
The needles of the Aleppo pine (Pinus halepensis) (PA) are very abundant in the forest of the National Park of Tazekka (Ta-za-Morocco) and are unexploitable. Moreover, they constitute a potential danger because they facilitate the outbreak of wildfires. To solve this problem, we have considered turning these needles into a biomaterial that could be used as raw material for different uses, such as wastewater treatment. The biomaterial of the Aleppo pine is obtained from its needles which are harvested in spring, dried, cut, crushed, and sieved. The powder obtained is analyzed before and after the extraction of essential oil. The physicochemical and spectroscopic analyses show that this biomaterial is porous, hygroscopic, slightly acidic, moderately moist, and not very conducive. Its average density in the anhydrous state is 0.6. It is rich in carbon (79.91%) and oxygen (18.91%) in the form of aromatic compounds and ketone imprints; thus, relating the presence of cellulose, pectin, lignin, and hemicellulose. Its composition in mineral elements (Na, Mg, Ca, K, Cl, S) is deficient. Gas chromatography-mass spectrometry (GC-MS) analysis of the oils extracted from the needle powder relates that it is a complex mixture of bioactive compounds such as mono-terpenoid α and β-pinene hydrocarbons. These results show that our biomaterial can be used as an adsorbent in wastewater treatment and the extracted essential oils can be used in the pharmacological, agro-food field.
Źródło:
Journal of Ecological Engineering; 2023, 24, 1; 41--50
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the Plackett-Burman Design on Soil Fertility Determinants
Autorzy:
Mehdaoui, Imane
El Ouadrhiri, Faiçal
Saoudi Hassani, El Mokhtar
Ben Abbou, Mohamed
Elhaji, Mounia
Akhazane, Mohamed
Taleb, Mustapha
Rais, Zakia
Powiązania:
https://bibliotekanauki.pl/articles/2202310.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
screening
factor
variable
Plackett-Burman design
coefficient of determination
Pareto chart
Opis:
In the present review article, a soil from the region of Fez-Sefrou Morocco was screened for some physicochemical characteristics using the Plackett-Burman model in order to determine the most important factors that promote its fertility. Five independent variables were selected: pH, electrical conductivity, humidity, organic matter, and C/N ratio. These variables were evaluated by statistical analysis, based on their significance, the value of the coefficient of determination and the Pareto chart. The results suggest that humidity and C/N ratio have an influence with a high level of confidence, while the other three show no significant effect on the content of nutrients in the soil. The analysis of the R2 variance value also showed that the models used for prediction were large and significant factors (p less than 0.05). Pareto chart plots for each response and its characteristics provided accurate data to select well-fitting variables for further optimization.
Źródło:
Journal of Ecological Engineering; 2022, 23, 12; 254--263
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Network Water Quality at a Hospital Center in Morocco: Bacteriological Survey and Relationship with Human Health
Autorzy:
Flouchi, Rachid
Elmniai, Abderrahim
Abbou, Mohamed Ben
Touzani, Ibrahim
Fikri-Benbrahim, Kawtar
Powiązania:
https://bibliotekanauki.pl/articles/1955565.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
bacteriology
water
hospital
bacteria
resistance
contamination
Opis:
Water is mandatory for the functioning of hospitals. Its consumption varies from one service to another, and its use can reduce the service quality on one hand and presents a major risk of nosocomial infection on the other hand. The health risks related to the use of water in hospitals are mostly microbiological, but sometimes they can be chemical. For this reason, the conducted work aimed to evaluate, for the first time, the quality and bacteriological efficiency of the network water of the provincial hospital center IBN BAJA in Taza, Northeast Morocco. During one year, 72 samples were analyzed in six surgery departments, one sample per month for each ward at a rate of six samples per month and per department. The results obtained showed that the water quality of the hospital network was in conformity with the requirements of the Moroccan standards. Nonetheless, some bacterial strains such as Aeromonas salmonicida spp salmonicida, Enterococcus spp., Pseudomonas luteola, Sphingomonas paucimobilis, Pseudomonas stutzeri, Stenotrophonomas maltophilia, Burkholderia cepacia and Micrococcus luteus, which constitute a major risk to human health, were found. Moreover, after sensitivity evaluation to the twenty-seven antibiotics, some strains have been shown to be multi-resistant, which can present a major risk of nosocomial infections in the studied hospital for human beings.
Źródło:
Journal of Ecological Engineering; 2021, 22, 9; 185-191
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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