Effect of combined mechanical–ultrasonic pretreatment on mesophilic anaerobic digestion of household organic waste fraction in Morocco

Karouach, Fadoua; Bakraoui, Mohammed; Gnaoui, Yasser El; Lahboubi, Nabila; Bari, Hassan El

doi:10.1016/j.egyr.2019.11.081

Cited by 26 publications

(7 citation statements)

References 14 publications

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“…AD produces two main products: biogas and digestate. The biogas composed mostly of methane and carbon dioxide Karouach et al, 2020). AD is considered as the most energy efficient and environmentally friendly method of sludge degradation (Donoso-Bravo et al, 2011), and is the ideal solution for wastewater treatment plants (Makisha et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Kinetic Modeling of Methane Production from the Anaerobic Digestion of Wastewater Sludge from a Treatment Plant in Kenitra, Morocco

Lihi¹,

Auajjar²,

Nizar³

et al. 2023

Ecol. Eng. Environ. Technol.

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It is necessary to understand the process of anaerobic digestion (AD) of sewage sludge and to find an adequate strategy to improve the efficiency of methane production. In this work, the production of methane and detailed properties of sludge are determined. The physico-chemical parameters of the digester 1 'D1' and the digester 2 'D2' remain in the optimal range of AD stability with a median value of pH (7.82; 7.93); Temperature (36.70; 37.10°C); alkalinity (3.52; 3.58 g/L); and volatile fatty acids (0.47; 0.52 g/L), respectively. This paper focuses on the performance optimization of the methane production by kinetic models of two continuous digesters in a wastewater treatment plant in Kenitra City, Morocco. Mathematical models used in anaerobic digestion are: Modified Gompertz, transference functions, and logistics functions. These kinetic models have benefitted experimental methane production for both digesters. Results show that all the models used are appropriate to optimize the kinetic parameters for producing methane, showing that the transference function is the most suitable model for predicting kinetic results.

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Section: Introductionmentioning

confidence: 99%

Kinetic Modeling of Methane Production from the Anaerobic Digestion of Wastewater Sludge from a Treatment Plant in Kenitra, Morocco

Lihi¹,

Auajjar²,

Nizar³

et al. 2023

Ecol. Eng. Environ. Technol.

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“…Different pretreatments were used in order to improve biodegradability and methane production, such as physical, chemical and biological (Bernat et al, 2020). The use of the pretreatment stage is to improve the physical accessibility of lignocellulosic matter to microbes (Karouach et al, 2020) and modify the structure of cellulosic materials, which are complex, with decreasing degree of polymerization, weakening of the lignin and carbohydrates bonds and increased surface area of particles (Mudhoo, 2012). In literature, most researchers approve that the alkali pretreatment appears to be the most effective method in terms of breaking the ester bonds between lignin, hemicellulose and cellulose (Khadaroo et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of Alkali-NaOH Pretreatment on Methane Production from Anaerobic Digestion of Date Palm Waste

Lahboubi¹,

Karouach²,

Bakraoui³

et al. 2022

Ecol. Eng. Environ. Technol.

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“…It is predicted that will reach 2.2 billion tons by the end of 2025, moreover, the generation of MSW has a higher rate than urbanization [3], therefore, the same for food waste (FW) which occupies the highest proportion of fermentable household waste [4]. Quantitatively, Moroccan country generates annually more than 9 million tons of MSW, with a daily report of 0.76 Kg per capita in the urban area, of which only 9% recycled, and 37% landfilled [5,6]. In the city of Oujda, the annual amount of solid waste generated is 152000 tons.…”

Section: Introductionmentioning

confidence: 99%

Food Waste reuse as a feed for organic chicken: A case study

Mechkirrou¹,

Arabi²,

Ouhssine³

et al. 2021

E3S Web Conf.

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Since the food system will inevitably produce food waste, it is recommended that it be captured and recycled for more efficient use rather than being disposed of as solid household waste. Therefore, it is advantageous to promote food waste as poultry feed. In order to study the feeding feasibility of a poultry Lab- Prepared Feed (LPF) based on kitchen food waste as well as their nutritional value, the tests were carried out near Taza city on an organic chicken farm, in Eastern Morocco. The results of consumption indices concerning organic chickens treated only by Lab-Prepared Feed showed average values of 1.18 and 1.17 for tests 1 and 2 successively. According to the results obtained, the tests proved the feeding feasibility of a Lab-Prepared Feed (LPF), it appears to be a good substitute for commercial foods. The study may help to ensure the recovering of food waste materials as a new poultry feed substitute.

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Effect of combined mechanical–ultrasonic pretreatment on mesophilic anaerobic digestion of household organic waste fraction in Morocco

Cited by 26 publications

References 14 publications

Kinetic Modeling of Methane Production from the Anaerobic Digestion of Wastewater Sludge from a Treatment Plant in Kenitra, Morocco

Kinetic Modeling of Methane Production from the Anaerobic Digestion of Wastewater Sludge from a Treatment Plant in Kenitra, Morocco

Effect of Alkali-NaOH Pretreatment on Methane Production from Anaerobic Digestion of Date Palm Waste

Food Waste reuse as a feed for organic chicken: A case study

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