Evaluation of the nutrients cycle, humification process, and agronomic efficiency of organic wastes composting enriched with phosphate sludge

Haouas, Ayoub; Modafar, Cherkaoui El; Douira, Allal; Ibnsouda-Koraichi, Saad; Filali‐Maltouf, Abdelkarim; Moukhli, Abdelmajid; Amir, Soumia

doi:10.1016/j.jclepro.2021.127051

Cited by 49 publications

(20 citation statements)

References 35 publications

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“…Composting is one of the best options for CE at the center of environmental policy. However, the composting of organic waste has several drawbacks in the finished product, such as, for example, insufficient maturity, unstable material, accumulation of toxic substances, and low nutrient content (Haouas et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Circular economy of waste in agrifood supply chain: A review

Ouro‐Salim

Guarnieri

2022

Thunderbird Intl Bus Rev

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Through a systematic literature review (SLR), this study aims to analyze the progress achieved in international literature regarding the circular economy (CE) of food waste. As a result, we realized that most of the authors considered had proposed different mathematical models, chemical and thermal treatment methods, statistical, and conceptual frameworks, besides that quantitative and qualitative studies to explain the processes related to the waste and CE in the agrifood sector. Furthermore, in business, management, and accounting, the CE of food waste focuses on added value and optimizing energy use rather than approaching the principles of reduction, reuse, and recycling. This study constitutes a first attempt at understanding the CE of food waste in business, management, and accounting fields of knowledge. This SLR can assist decision-makers, managers, and governments to formulate policies and strategies to effectively implement CE in agrifood supply chains.

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Section: Discussionmentioning

confidence: 99%

Circular economy of waste in agrifood supply chain: A review

Ouro‐Salim

Guarnieri

2022

Thunderbird Intl Bus Rev

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“…At this stage, the phosphate particles between 125 μm and 160 μm are separated from the other gangue minerals that make up the second part of the PS. The PS is then deposited on the surrounding lands of the enrichment factories (Haouas et al 2021b).…”

Section: Samplingmentioning

confidence: 99%

“…The results of the germination test carried out using tomato and maize seeds germinated in PS extract were presented in Figure 7. Several authors reported that a GI greater than 50% was a good indicator for non-phytotoxic samples (Levy and Taylor, 2003;Haouas et al, 2021b). The main factors leading to the inhibition of seed germination are high concentrations of salts, certain heavy metals (e.g., arsenic (As), Pb, Cd, and Cr), and toxic organic compounds (e.g., polyphenols and organic acids) (Martínez-Ballesta et al, 2020).…”

Section: Pathogenicity and Phytotoxicitymentioning

confidence: 99%

“…PS represents major economic and environmental problems, which by its accumulating induced a loss of recyclable materials, forms dikes, disfigures the landscape and reduces arable lands (Haouas et al, 2020). Until this time, few studies aimed to find appropriate ways for PS valorization, including the production of light aggregates (Loutou et al, 2013), geopolymers (Moukannaa et al, 2018) and composting (Haouas et al, 2021b).…”

Section: Introductionmentioning

confidence: 99%

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Phosphate sludge: opportunities for use as a fertilizer in deficient.

et al. 2021

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Phosphate sludge (PS) is an industrial by-product produced in huge quantities by the phosphate beneficiation plants in Morocco. In order to valorize this by-product, it was examined for its potential use as a soil fertilizer. The physicochemical properties, elemental and mineral content, morphological structure, and component stability of raw PS were investigated. In addition, pathogenicity, phytotoxicity, and the capacity of PS to promote plant growth in deficient sandy soil have been studied. The obtained results showed that PS was characterized by low values of moisture (2.10%), electrical conductivity (EC) (0.77 mS/cm), and organic matter (OM) (0.61%), with a slightly alkaline pH (8.20). Nevertheless, this material carried interesting content of fertilizing elements such as phosphorus (P2O5) of 20.01%, calcium (CaO) of 39.72%, and magnesium (MgO) of 2.33%. Thus, PS did not present any pathogenic or phytotoxic risk with a high increase in tomato plant growth than the control of only soil. In conclusion, the results of this study could provide the primary practical guidance for the PS application in deficient soils characterized by sandy texture.

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“…Due to the polluting and pathogenic characteristics of this waste material, composting is an important tool for treating and recycling its nutrients, and compositing in static windrows is one of the preferred ways to promote safety throughout the process. Due to minimal contact with this waste, the risk of disease transmission is reduced, and if the ideal conditions for composting, especially aeration and moisture in the piles, are maintained, then sanitation measures and nutrient cycling are effective, providing added value to the waste (Haouas et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Might be the forced aeration an alternative to improve the efficiency of composting and quality of fertilizer?

Oliveira

Orrico

Vilela

et al. 2022

Preprint

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The objective of this study was to evaluate the influence of forced aeration and season on hatchery waste composting in static windrows with perforated walls. there were three well-defined thermophilic phases during composting, with the first occurring immediately after the formation of the windrows and the others occurring after turnovers at 50 and 70 days of composting. Aeration resulted in greater degradation (p<0.01) of volatile solids (VS), carbon (C), and lignin in the composting windrows during the summer up to 50 days of process, in comparison to no aeration piles. However, at 70 and 90 days of composting, the results were similar between aerated and nonaerated windrows. The greatest (p<0.01) degradation of nitrogen (N) occurred during the winter and in the absence of aeration (55.25%). Season influenced (p<0.05) the concentrations of humic acids, and they were higher in the compost generated during the summer than generated during the winter. The concentrations of Mg, Fe and Na were influenced by the season, with higher values (p<0.01) in the summer, however they were not affected by aeration. In the winter, aeration is recommended after 50 days of composting, whereas in summer, forced aeration is beneficial for N conservation and humic acid formation.

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Evaluation of the nutrients cycle, humification process, and agronomic efficiency of organic wastes composting enriched with phosphate sludge

Cited by 49 publications

References 35 publications

Circular economy of waste in agrifood supply chain: A review

Circular economy of waste in agrifood supply chain: A review

Phosphate sludge: opportunities for use as a fertilizer in deficient.

Might be the forced aeration an alternative to improve the efficiency of composting and quality of fertilizer?

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