Potential for biogas production from the anaerobic digestion of chicken droppings in Morocco

Elasri, Ouahid; Afilal, Mohamed El amin

doi:10.1007/s40093-016-0128-4

Cited by 41 publications

(19 citation statements)

References 24 publications

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“…This waste contains pathogenic bacterial, carbonic, and nitrogenous loads that can harm groundwater and surface water. Landfilling is the open-air causes the production of greenhouse gases (13% of these gases are of origin breeding) and aerial microbial pollution [6][7][8]. The second constraint is energetic.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of physicochemical, microbiological, and energetic characteristics of four agricultural wastes for use in the production of green energy in Moroccan farms

Asri

Afilal

Laiche

et al. 2020

Chem. Biol. Technol. Agric.

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Background Animal husbandry is one of the agricultural activities that generates economic benefits for agriculture. We detected significant development of these activities in Morocco. Currently, it is stuck between the increase of organic waste polluting the farm environment and the energy needed to ensure the activities. Faced with this challenge, we determined all physical, chemical, and microbiological characteristics for livestock wastes most spread in Morocco. We evaluated also their ability to be used as bioresources for the anaerobic digestion and incineration ways for energy production to agricultural units. Methods We worked on four organic wastes (cow dung, horse manure, broiler droppings, and the excrement of laboratory mouse). The physical, chemical, and microbiological characteristics: moisture, total solids, volatile solids, organic carbon, nitrogen, ions and heavy metals, staphylococci, coliforms, yeasts and fungi and total aerobic mesophilic bacteria are determined by standard methods. The determination of lower heating value is performed with calorimetric bomb. The biogas production is determined by four batch types of digesters. All digesters are incubated at 35 ± 1 ℃ for 40 days. The volumes of biogas produced are corrected under standard pressure and temperature conditions. Results We noticed that the four agricultural wastes have a lower heating value closer to each other. When comparing the physicochemical composition of our wastes with that of Tanner’s theoretical waste, we have found that the valorization of these organic wastes by incineration is without energy and economic benefits. The microbiological content reflects the presence of a reservoir of pathogenic bacteria. On the other hand, the biogas potential shows that cow waste produces the largest amount of biogas. The co-digestion is necessary for horse manure, chicken manure, and excrement of laboratory mouse in order to increase their biogas potential. The mineral composition shows the possibility of using digestate of these wastes as an organic amendment to plants. Conclusions The comparison of the physicochemical and microbiological characteristics of the four organic wastes in Morocco reflects some important points. Firstly, there is an urgency to intervene to treat and valorize these wastes before putting them in the open air. Secondly, the incineration of this waste is inadequate from an energy point of view. In the third position, these wastes present a great ability to be used as feed substrates of farm digesters. Finally, the biogas potential and the mineral composition of these wastes demonstrates the ability to use them as bioresources capable of producing green energy and an organic amendment to Moroccan farms.

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Section: Introductionmentioning

confidence: 99%

Evaluation of physicochemical, microbiological, and energetic characteristics of four agricultural wastes for use in the production of green energy in Moroccan farms

Asri

Afilal

Laiche

et al. 2020

Chem. Biol. Technol. Agric.

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“…The main products obtained from domestic quails are stock/breeder eggs and meat. Additional products could be dehydrated manure or biogas (3)(4)(5). Domesticated Japanese quail is outlined with earliest onset of sexual maturity among livestock species, attaining maturity at 35-42 days of age.…”

Section: Introductionmentioning

confidence: 99%

Comparative Investigation of Egg Production in Wg, Gg and Gl Japanese Quail Populations

Lukanov¹,

Genchev²,

Kolev³

2018

TJS

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The aim of the study was to evaluate egg production in three heavy Japanese quail populations created and reared in the Poultry Breeding Unit of the Trakia University – Bulgaria, marked as WG, GG and GL. In the experiments, 160 female birds from populations WG and GG, and 96 female birds from population GL were tested up to the 6th production month. The main egg production traits were controlled. The highest egg production for the period was demonstrated in group GL (79.84±4.46%), followed by group GG (76.33±3.40%) and group WG (72.11±4.16%). Quails from the WG group were outlined with least efficient feed conversion per egg (74.49±1.21 g feed), while those from the GL group: with the most efficient one – 64.93±1.41 g (p<0.01). The highest average egg weight in descending order was observed in the WG group (14.04±0.32 g), GG group (13.65±0.27 g) and GL group (12.79±0.29 g). The Japanese quail populations created and maintained at the Trakia University showed a potentially good egg production for the production type they belonged to, which makes them attractive for use in interline hybridisation schedules, including for production of autosexing stock layers.

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“…In the Souss-Massa region (South Western Morocco), the production of such plant by-product has reached 406,045 tonsÁyear -1 (ORMVA/SM 2009). The development of the agricultural production can cause several types of pollution (Elasri and Afilal 2016). Those agricultural wastes, which are not well managed, can lead to serious sanitary and environmental complications, such as soil, air, and groundwater pollution.…”

Section: Introductionmentioning

confidence: 99%

Agro-environmental assessment of composting plants in Southwestern of Morocco (Souss-Massa Region)

Azim

Komenane

Soudi

2017

Int J Recycl Org Waste Agricult

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Purpose The region of Souss-Massa generates huge quantities of organic horticultural wastes estimated up to 1,307,465 tonsÁyear -1 . Fruit and vegetable producers are asked to process the organic wastes because of the GlobalGAP certification requirements. As a result, there is a need to assess the existing composting plants at regional scale, to improve their efficiency, produce a high-quality soil amendment, free from any pathogens, and weed seeds. Methods The survey consisted of a diagnosis of the quantitative and qualitative status of the organic horticultural wastes (axillary buds; pruned leaves), and an agroenvironmental assessment of nine composting units. Results The analysis of macronutrients (nitrogen, phosphorus, and potassium) in the organic wastes reveals that 13 million euro worth of N, P, and K can be generated by composting all horticultural wastes (12,000 tons of nitrogen, 6000 tons of phosphorus and 14,000 tons of potassium Á year -1 ), constituting for soils an important source of fertilization backup. Results of field investigations showed that 55% of the composting plants have an area equal to one hectare. The proximity between mature piles and raw materials in 55.5% of cases could highly contaminate them by root knot nematode inoculum. Only 11% of composting units were operating on impermeable surface. The test of circular chromatography showed that 80% of sampled composts are immature, even with high operational costs. Conclusion Much effort is required to control and optimize the maturation process. The composting activity should be organized through a professional skilled organization, supported by scientific research and government subsidies.

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Potential for biogas production from the anaerobic digestion of chicken droppings in Morocco

Cited by 41 publications

References 24 publications

Evaluation of physicochemical, microbiological, and energetic characteristics of four agricultural wastes for use in the production of green energy in Moroccan farms

Evaluation of physicochemical, microbiological, and energetic characteristics of four agricultural wastes for use in the production of green energy in Moroccan farms

Comparative Investigation of Egg Production in Wg, Gg and Gl Japanese Quail Populations

Agro-environmental assessment of composting plants in Southwestern of Morocco (Souss-Massa Region)

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