Plastic waste as pyrolysis feedstock for plastic oil production: A review

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 877, P. 162719 - 162719

Published: March 16, 2023

Language: Английский

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Pyrolysis of mixed engineering plastics: Economic challenges for automotive plastic waste

Waste Management, Journal Year: 2024, Volume and Issue: 176, P. 105 - 116

Published: Jan. 26, 2024

Chemical recycling of complex plastic waste via pyrolysis can reduce fossil resource dependence the plastics value chain and greenhouse gas emissions. However, economic viability is crucial for its implementation, especially considering challenging streams with high shares engineering that have lower product quality than standard thermoplastics waste. Thus, this study conducts a techno-economic assessment determining profitability factors plants automotive in Germany including different plant capacities calculating cost-covering minimum sales prices resulting oil. Main findings are due to economies scale, vary between 1182 €/Mg oil (3750 Mg input/year) 418 (100,000 input/year). The technology employed must be robust scalable realize these scale. Large face challenges such as feedstock availability at reasonable costs, constant quality, affecting pricing. Due limited yield produced from technically demanding feedstocks, policy implications additional revenue gate fees or subsidies essential ensure positive business case necessary. Depending on assessed capacity, revenues 720 59 should realized competitive price reference heavy fuel Otherwise, environmental potential cannot exploited.

Language: Английский

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Novel process design for waste energy recovery of LNG power plants for CO2 capture and storage

Energy Conversion and Management, Journal Year: 2022, Volume and Issue: 277, P. 116587 - 116587

Published: Dec. 22, 2022

In an liquefied natural gas (LNG) power plant, the amine scrubbing and CO2 liquefaction process are generally employed for capture storage (CCS) because it is suitable large-scale plants. However, a large amount of hot cold energy required absorption, regeneration liquefaction. As solution, waste LNG from regasification combined cycle (NGCC), which disposed into seawater, can be recovered utilized abovementioned purposes. Hence, this study suggested novel recovery plants CCS. The model consists following four steps: regasification, cycle, model, at lean cooler in each heat exchanger process. Furthermore, regeneration, NGCC stripper reboiler. exergy economic analyses were addressed to evaluate feasibility conversion proposed result, compared base process, net generation efficiency increased by 16% 8%, respectively. addition, profit 75%, indicating high feasibility. overall using observed increase, resulted decreased fuel usage. Therefore, we believe that approach contribute significantly improvements environmental protection efforts.

Language: Английский

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Multi-sensor characterization for an improved identification of polymers in WEEE recycling

Waste Management, Journal Year: 2024, Volume and Issue: 178, P. 239 - 256

Published: Feb. 27, 2024

Polymers represent around 25% of total waste from electronic and electric equipment. Any successful recycling process must ensure that polymer-specific functionalities are preserved, to avoid downcycling. This requires a precise characterization particle compounds moving at high speeds on conveyor belts in processing plants. We present an investigation using imaging point measurement spectral sensors 23 polymers including ABS, PS, PC, PE-types, PP, PVC, PET-types, PMMA, PTFE assess their potential perform under the operational conditions found facilities. The techniques applied include hyperspectral (HSI) map reflectance visible near infrared (VNIR), short-wave (SWIR) mid-wave (MWIR) as well Raman, FTIR spectroradiometer instruments. show none alone can identify all while meeting industry requirements. HSI successfully acquired simultaneous spatial information for certain polymer types. HSI, particularly range between (1600–1900) nm, is suitable specific identification transparent light-coloured (non-black) PVC PET-types plastics; MWIR able resolve features black HDPE, ABS. Fast-acquisition Raman spectroscopy (down 500 ms) enabled regardless composition presence pigments, however, it exhibited limited capacities mapping applications. therefore suggest combination both measurements sequential design enhanced robustness industrial identification.

Language: Английский

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Utilization of fuel energy from single-use Low-density polyethylene plastic waste on CI engine with hydrogen enrichment – An experimental study

Energy, Journal Year: 2023, Volume and Issue: 289, P. 129926 - 129926

Published: Dec. 12, 2023

Language: Английский

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A genetic algorithm-based optimal selection and blending ratio of plastic waste for maximizing economic potential

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 186, P. 715 - 727

Published: April 6, 2024

Language: Английский

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Evaluation of Marker Materials and Spectroscopic Methods for Tracer-Based Sorting of Plastic Wastes

Polymers, Journal Year: 2022, Volume and Issue: 14(15), P. 3074 - 3074

Published: July 29, 2022

Plastics are a ubiquitous material with good mechanical, chemical and thermal properties, used in all industrial sectors. Large quantities, widespread use, insufficient management of plastic wastes lead to low recycling rates. The key challenge waste is achieving higher degree homogeneity between the different polymer streams. Modern sorting plants use automated sensor-based systems capable sort out commodity plastics, while many engineering such as polyoxymethylene (POM), will end up mixed streams therefore not recycled. A novel approach increasing rates tracer-based (TBS), which uses traceable additive or marker that enables enhances type identification based on tracer's unique fingerprint (e.g., fluorescence). With future TBS applications mind, we have summarized literature assessed techniques spectroscopic detection methods. Furthermore, comprehensive list potential tracer substances suitable for thermoplastics was derived from literature. We also set criteria select most promising candidates (3 80) their toxicity profiles, detectability could be applied enable circularity of, example, POM other thermoplastics.

Language: Английский

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Novel carbon-neutral hydrogen production process of steam methane reforming integrated with desalination wastewater-based CO2 utilization

Desalination, Journal Year: 2022, Volume and Issue: 548, P. 116284 - 116284

Published: Dec. 2, 2022

Steam methane reforming (SMR) process is facing serious greenhouse effect problems because of the significant CO2 emissions. To reduce pollution caused by gaseous emissions, desalination wastewater can be used it contains highly concentrated useful mineral ions such as Ca2+, Mg2+, and Na+, which react with carbonate ions. This study proposes a novel SMR for carbon-neutral hydrogen production integrated wastewater-based utilization. A model design proposed; comprises following steps: (1) production; (2) recovery In model, from was captured using Na+ ion, ionic carbonated Ca2+ Mg2+ in wastewater. The levelized cost (LCOH) assessed to demonstrate economic feasibility proposed process. Therefore, 94.5 % captured, conversion MgCO3 CaCO3 determined 60 99 %, respectively. addition, emission via 0.016 kgCO2/kgH2, LCOH calculated 2.6 USD/kgH2.

Language: Английский

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From sustainable macro debris chemical recycling to microplastic reclamation: Overview, research challenges, and outlook

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 454, P. 142281 - 142281

Published: April 22, 2024

Language: Английский

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Economic and environmental factor-integrated optimal model for plastic-waste sorting

Journal of Industrial and Engineering Chemistry, Journal Year: 2024, Volume and Issue: 139, P. 162 - 174

Published: May 1, 2024

Language: Английский

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