Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159805 - 159805
Опубликована: Янв. 1, 2025
Язык: Английский
Chemical Reviews, Год журнала: 2023, Номер 123(8), С. 5139 - 5219
Опубликована: Апрель 9, 2023
Combustion is a reactive oxidation process that releases energy bound in chemical compounds used as fuels─energy needed for power generation, transportation, heating, and industrial purposes. Because of greenhouse gas local pollutant emissions associated with fossil fuels, combustion science applications are challenged to abandon conventional pathways adapt toward the demand future carbon neutrality. For design efficient, low-emission processes, understanding details relevant transformations essential. Comprehensive knowledge gained from decades fossil-fuel research includes general principles establishing validating reaction mechanisms models, relying on both theory experiments suite analytic monitoring sensing techniques. Such can be advantageously applied extended configure, analyze, control new systems using different, nonfossil, potentially zero-carbon fuels. Understanding impact its links chemistry needs some background. The introduction therefore combines information exemplary cultural technological achievements nature effects emissions. Subsequently, methodology described. A major part devoted followed by discussion selected applications, illustrating future.
Язык: Английский
Процитировано
120
ACS Catalysis, Год журнала: 2022, Номер 12(24), С. 14882 - 14901
Опубликована: Ноя. 23, 2022
Polyolefins, the largest used commodity plastics in world, find extensive application many fields. However, most end up landfills or incineration, leading to severe ecological crises, environmental pollution, and serious resource waste problems. As representatives on chemical upcycling of polyolefin fuels bulk/fine chemicals, catalytic cracking hydrocracking based zeolite metal/zeolite composite catalysts are considered effective paths due their large capacity strong adaptability existing petrochemical equipment. After an overview reaction mechanisms pyrolysis cracking, this review aims comprehensively discuss influence catalyst structure (acidity, pore structure, morphology) activity, selectivity, stability particularly emphasizing importance for matching acidity target product formation. Subsequently, structure–activity relationship between metal site zeolite's acid is also discussed. In end, emerging opportunities challenges proposed promote a more efficient way upcycling.
Язык: Английский
Процитировано
116
Waste Management, Год журнала: 2023, Номер 166, С. 245 - 258
Опубликована: Май 16, 2023
Язык: Английский
Процитировано
112
Chemical Engineering Journal, Год журнала: 2022, Номер 453, С. 139725 - 139725
Опубликована: Окт. 12, 2022
Язык: Английский
Процитировано
103
Journal of the American Chemical Society, Год журнала: 2023, Номер 145(41), С. 22836 - 22844
Опубликована: Окт. 5, 2023
Mixed plastic waste treatment has long been a significant challenge due to complex composition and sorting costs. In this study, we have achieved breakthrough in converting mixed wastes into single chemical product using our innovative single-atom catalysts for the first time. The Ru catalyst can convert ∼90% of real methane products (selectivity >99%). unique electronic structure sites regulates adsorption energy intermediates, leading rapid decomposition plastics superior cycle stability compared traditional nanocatalysts. global warming potential entire process was evaluated. Our proposed carbon-reducing utilizing launches new era valorization.
Язык: Английский
Процитировано
77
Ecotoxicology and Environmental Safety, Год журнала: 2024, Номер 271, С. 115942 - 115942
Опубликована: Янв. 12, 2024
The global production and consumption of plastics, as well their deposition in the environment, are experiencing exponential growth. In addition, mismanaged plastic waste (PW) losses into drainage channels a growing source microplastic (MP) pollution concern. However, complete understanding environmental implications throughout life cycle is yet to be fully understood. Determining potential extent which MPs contribute overall ecotoxicity possible through monitoring PW release MP removal during remediation. Life assessments (LCAs) have been extensively utilized many comparative analyses, such comparing petroleum-based plastics with biomass single-use multi-use alternatives. These typically yield unexpected or paradoxical results. Nevertheless, there still paucity reliable data tools for conducting LCAs on plastics. On other hand, impact so far not considered LCA studies. This due absence inventory-related regarding releases characterization factors necessary quantify effects MP. Therefore, this review paper conducts comprehensive literature order assess current state knowledge impacts that occur along strategies management LCA.
Язык: Английский
Процитировано
54
Sustainability, Год журнала: 2023, Номер 15(6), С. 5233 - 5233
Опубликована: Март 15, 2023
The devastating effect of plastic waste on the ecosystem due to rapid increase in population has been a concern. Although stakeholders and governments invested efforts mitigate waste, their exertions have limited no effects as demand for increases annually. Emerging practical advancements recycling critical achieving sustainable circular economy. This study reviews adverse environment inhabiting creature, regulation managing limitations. scoping review also provides information current route reducing by defining its sources applications. After identifying generation polymers are categorized according hazard ranking monomers environmental toxicity, damaging creature. discharge pathways into aquatic systems leading white pollution climate change were determined. Conversion through remedial channel manufacturing value-added products using techniques such reusing, recycling, energy recovery, disposal landfills is outlined. processes provided this will help reduce from environment. In addition, correctly applying these suggestions may death creations. Further research necessary convert raw materials high-value achieve
Язык: Английский
Процитировано
53
The Science of The Total Environment, Год журнала: 2023, Номер 913, С. 169436 - 169436
Опубликована: Дек. 29, 2023
Due to the 'forever' degrading nature of plastic waste, waste management is often complicated. The applications are ubiquitous and inevitable in many scenarios. Current global plastics production ca. 3.5 MMT per year, with current trend, will reach 25,000 by 2040. However, rapid growth manufacture material's inherent resulted accumulation a vast amount garbage. recycling rate <10 %, while large volumes discarded cause environmental ecological problems. Recycling rates for vary widely region type plastic. In some developed countries, around 20-30 developing nations, it much lower. These statistics highlight magnitude problem urgent need comprehensive strategies manage more effectively reduce its impact on environment. This review critically analyses past studies essential efficient techniques turning trash into treasure. Additionally, an attempt has been made provide understanding upcycling process, 3Rs policy, life-cycle assessment (LCA) conversion. advocates pyrolysis as one most promising methods valuable chemicals. addition, can be severely impacted due uncontrollable events, such Covid 19 pandemic. chemical certainly bring value end-of-life LCA analysis indicated there still huge scope innovation area compared mechanical recycling. formulation policies heightened public participation could play pivotal role reducing repercussions facilitating shift towards sustainable future.
Язык: Английский
Процитировано
48
Chem, Год журнала: 2023, Номер 9(9), С. 2683 - 2700
Опубликована: Авг. 14, 2023
Язык: Английский
Процитировано
47
Progress in Energy and Combustion Science, Год журнала: 2023, Номер 97, С. 101086 - 101086
Опубликована: Апрель 20, 2023
Язык: Английский
Процитировано
46