Recirculating treated sewage sludge for agricultural use: Life cycle assessment for a circular economy

Aleisa, Esra; Alsulaili, Abdalrahman; Almuzaini, Yasmeen Moeen

doi:10.1016/j.wasman.2021.08.035

Cited by 44 publications

(30 citation statements)

References 74 publications

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“…This group of words, represented by the keywords "Fertilizers", "Anaerobic Digestion", "Biogas", and "Biofuels", focuses on finding answers to toxicity problems. In fact, the keywords used in this cluster suggest this subject of study [80,81]. This issue is considered of vital importance in agriculture since the uncontrolled use of insecticides and chemical products negatively affects the environment.…”

Section: Abstract From 2005 To 2021mentioning

confidence: 99%

An Evolutionary Approach on the Framework of Circular Economy Applied to Agriculture

et al. 2022

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In this current and global context led by scarcity of resources, environmental degradation, global climate change, and a progressive demand for food, the circular economy (CE) represents a key economic model or framework for sustainable, restorative, and regenerative agriculture. Hence, CE applied to agriculture seeks to close the life cycle of products, services, waste, water, and energy to obtain a better use of resources and a reduction of the ecological impact. An initial review of the literature corroborates the hypothesis that the CE framework has not yet been comprehensively adapted to the field of agriculture. This research seeks to overcome this gap in relation to the performance of the circularity of agricultural production systems in support of decision-making processes. A bibliometric analysis of 1060 documents was carried to synthesize the knowledge base on this topic. The results show recent studies that identify weaknesses derived from food production, such as waste generation, biomass, water pollution, and greenhouse gas emissions. It has been identified how their analysis has developed to date and what terms allow us to visualize new approaches; consequently, it is a useful tool for researchers and sponsors who provide financial resources for the development of new lines of research.

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Section: Abstract From 2005 To 2021mentioning

confidence: 99%

An Evolutionary Approach on the Framework of Circular Economy Applied to Agriculture

et al. 2022

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“…LCA has been applied since the 1990s to assess the environmental impact of different technologies, scenarios, and operation alternatives associated with wastewater and sludge management [13][14][15][16][17][18][19][20][21][22]. To date, more than 100 research papers have been published in this field.…”

Section: Assessing Wastewater Treatment Technologies Using Lcamentioning

confidence: 99%

“…The resultant active sludge is continuously recycled to the aeration tank, where it mixes with incoming wastewater to feed bacteria and maintain the required food to microorganism (F/M) ratio. The surplus activated sludge (SAS) goes to sludge treatment [22].…”

Section: System Scope and Boundarymentioning

confidence: 99%

“…Eight aerobic digesters use gravity belts that carry sludge for dewatering to form a sludge cake. This sludge cake is landfilled [22].…”

Section: System Scope and Boundarymentioning

confidence: 99%

“…It has a design capacity of 1.8 million m 3 volume with a 30-year lifetime. It is equipped with a leachate and landfill gas collection system [22]. The energy for the cogeneration alternatives are based on energy allocation to the distillers using exergy analyses of combined cycle arrangements and performance ratios obtained from Wakil Shahzad, et al [57], Shahzad, et al [58],…”

Section: Life Cycle Inventorymentioning

confidence: 99%

See 2 more Smart Citations

Life Cycle Assessment for Tertiary Wastewater Treatment and Reuse versus Seawater Desalination

Aleisa

Al-Mutiri²

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Wastewater reuse is now indispensable for meeting the increasing water demand, particularly under conditions of alarming water scarcity, which is now already affecting every continent. The objective of this study is to apply life cycle assessment (LCA) to evaluate the environmental impact and missed opportunity of treating municipal wastewater to tertiary quality and compare it to conventional seawater desalination in the Gulf Corporation Council (GCC) countries, namely: Multistage flash distillation (MSF), multi-effect distillation (MED) and seawater reverse osmosis (SWRO). The study follows the ISO 14040/44 standards and uses a functional unit of 1 Mm3 of tertiary treated effluent (TTE). The modeling concept adopts the cradle-to-gate consequential paradigm. The life cycle inventory is based on fielded data collection, reports, literature and Ecoinvent database processes. The scope includes: infrastructure, grid, materials, energy requirements, chemical additives and sludge disposal; for primary, secondary and tertiary treatment. The life cycle impact assessment is applied on both the characterized and normalized levels using the ReCiPe method. Compared to distillation, TTE exhibits an average reduction of 94% in fossil depletion. For climate change and particulate matter, an average reduction of 79% and 73% can be realized respectively. The large difference is due to energy consumption in desalination, despite that fact that the energy considered is only the allocated portion to distillation in the cogeneration total, using exergy specific power consumption.

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Occurrence and Fate of Fragrances in Wastewater Treatment Plants

Ozaki

2023

The Handbook of Environmental Chemistry

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Recirculating treated sewage sludge for agricultural use: Life cycle assessment for a circular economy

Cited by 44 publications

References 74 publications

An Evolutionary Approach on the Framework of Circular Economy Applied to Agriculture

An Evolutionary Approach on the Framework of Circular Economy Applied to Agriculture

Life Cycle Assessment for Tertiary Wastewater Treatment and Reuse versus Seawater Desalination

Occurrence and Fate of Fragrances in Wastewater Treatment Plants

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