Subcritical water extraction as a circular economy approach to recover energy and agrochemicals from sewage sludge

Zohar, Matat; Matzrafi, Maor; Abu‐Nassar, Jackline; Khoury, Osama; Gaur, Rubia Zahid

doi:10.1016/j.jenvman.2021.112111

Cited by 14 publications

(4 citation statements)

References 36 publications

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“…SFE was applied to environmental matrices for the analysis of Ag in electronic waste [193], petroleum biomarkers in tar balls and crude oils [194], petroleum hydrocarbons in soil [195], and solanesol in tobacco residues [196]. In turn, SWE has been successfully used for the extraction of Co, Li, and Mn in spent lithium-ion batteries [197], crude oil in soil [198], oil shale in mines [199], and VOCs in sewage sludge [200]. An exhaustive list of GreETs involving environmental samples is available in Table S3.…”

Section: Environmental Samplesmentioning

confidence: 99%

Green Extraction Techniques as Advanced Sample Preparation Approaches in Biological, Food, and Environmental Matrices: A Review

et al. 2022

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Green extraction techniques (GreETs) emerged in the last decade as greener and sustainable alternatives to classical sample preparation procedures aiming to improve the selectivity and sensitivity of analytical methods, simultaneously reducing the deleterious side effects of classical extraction techniques (CETs) for both the operator and the environment. The implementation of improved processes that overcome the main constraints of classical methods in terms of efficiency and ability to minimize or eliminate the use and generation of harmful substances will promote more efficient use of energy and resources in close association with the principles supporting the concept of green chemistry. The current review aims to update the state of the art of some cutting-edge GreETs developed and implemented in recent years focusing on the improvement of the main analytical features, practical aspects, and relevant applications in the biological, food, and environmental fields. Approaches to improve and accelerate the extraction efficiency and to lower solvent consumption, including sorbent-based techniques, such as solid-phase microextraction (SPME) and fabric-phase sorbent extraction (FPSE), and solvent-based techniques (μQuEChERS; micro quick, easy, cheap, effective, rugged, and safe), ultrasound-assisted extraction (UAE), and microwave-assisted extraction (MAE), in addition to supercritical fluid extraction (SFE) and pressurized solvent extraction (PSE), are highlighted.

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Section: Environmental Samplesmentioning

confidence: 99%

Green Extraction Techniques as Advanced Sample Preparation Approaches in Biological, Food, and Environmental Matrices: A Review

et al. 2022

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“…Technological innovation provides the ingredients for the advancement of modern society, and CE has not been left out of the possibilities offered by technology. The literature review revealed that most of the studies on technological applications in the CE relate to the regenerative element of the ReSOLVE framework of the CE [84][85][86][87][88][89][90]. Closing the loops and digitization have driven CE technologies in the reported literature.…”

Section: Technologymentioning

confidence: 99%

“…Also, the performance measurement stemmed from wastewater treatment and sewage sludge treatment with targeted use of regenerated products in the agriculture sector. Whereas the authors in [89] concluded that valuable agrochemicals can be drawn by applying subcritical water as a green solvent, other findings show the extraction of energy in the form of hydrocarbon from dry wastewater sludge [90]. Digital technology application in the CE has attracted much research due to the fourth industrial revolution.…”

Section: Technologymentioning

confidence: 99%

“…Further, the results show that the energy sector has seen much attention in terms of CE technological studies across various elements of the CE, as most of the studies reported relate to this sector. Renewable energy technologies such as bioenergy, solar PV, energy storage, and energy recovery were also studied [85,86,88,89,92,94,[97][98][99][100]. To optimize electricity generation by minimizing cost and maximizing production to meet demand sustainably, the authors in [101] used the "nature-inspired optimization" methodology to propose a combination of solar power and traditional power generation.…”

Section: Technologymentioning

confidence: 99%

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Accelerating the Transition to a Circular Economy for Net-Zero Emissions by 2050: A Systematic Review

et al. 2022

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Achieving net-zero emissions by 2050 will require tackling both energy-related and non-energy-related GHG emissions, which can be achieved through the transition to a circular economy (CE). The focus of climate change crisis reversal has been on the energy-related continuum over the years through promoting renewable energy uptake and efficiency in energy use. Clean energy transition and efficiency gains in energy use alone will not be sufficient to achieve net-zero emissions in 2050 without paying attention to non-energy-related CO2 emissions. This study systematically reviews the CE literature across different themes, sectors, approaches, and tools to identify accelerators in transitioning to a CE. The study aims to understand and explore how technology, finance, ecosystem, and behavioral studies in the CE paradigm can be integrated as a decision-making tool for CE transition. The material analysis was carried out by identifying the main characteristics of the literature on CE implementation in the agriculture, industry, energy, water, and tourism sectors. Results of the literature survey are synthesized to engender clarity in the literature and identify research gaps to inform future research. Findings show that many studies focused on technology as an accelerator for CE transition, and more studies are needed regarding the CE ecosystem, financing, and behavioral aspects. Also, results show that CE principles are applied at the micro-, meso-, and macro- (national, regional, and global) levels across sectors with the dominance of the industrial sector. The agriculture, water, and energy sectors are at the initial stages of implementation. Additionally, the use of carbon capture and utilization or storage, conceptualized as a circular carbon economy, needs attention in tackling CE implementation in the energy sector, especially in hydrocarbon-endowed economies. The major implication of these findings is that for CE to contribute to accelerated net-zero emission by 2050, coordinated policies should be promoted to influence the amount of financing available to innovative circular businesses and technologies within an ecosystem that engenders behavioral change towards circularity.

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The Circular Economy and Energy

Rosen

2022

CSR, Sustainability, Ethics &Amp; Governance

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Subcritical water extraction as a circular economy approach to recover energy and agrochemicals from sewage sludge

Cited by 14 publications

References 36 publications

Green Extraction Techniques as Advanced Sample Preparation Approaches in Biological, Food, and Environmental Matrices: A Review

Green Extraction Techniques as Advanced Sample Preparation Approaches in Biological, Food, and Environmental Matrices: A Review

Accelerating the Transition to a Circular Economy for Net-Zero Emissions by 2050: A Systematic Review

The Circular Economy and Energy

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