AI Article Synopsis
- Platinum group metals (PGMs) like platinum, palladium, and rhodium are important for car exhaust systems and are mainly found in a few countries.
- The demand for these metals is rising, especially in China, but they are rare, so recycling old car parts can help balance supply and demand while being good for the environment.
- The paper talks about how different countries manage waste from these car parts, especially in China, and suggests ways to improve recycling methods for the future.
Article Abstract
Platinum group metals (PGMs), especially platinum (Pt), palladium (Pd), and rhodium (Rh), are widely used in automotive three-way catalysts (TWCs). PGM resources are scarce and unevenly distributed, with global reserves of 69,000 t in 2020, of which more than 99% are concentrated in South Africa, Russia, Zambia, and the United States. However, the demand for PGMs worldwide is growing continually, especially in China. The recovery of PGMs from spent TWCs not only can alleviate the contradiction between supply and demand but also have good economic and environmental benefits. This paper briefly analyzes the market demand for Pt, Pd, and Rh in the global automotive industry in recent years, emphasizing the importance of waste TWC recycling. It also presents the current status of waste TWC management in some countries, especially China, and critically reviews the main recycling strategies for waste TWCs. On this basis, suggestions for strengthening the management of waste TWCs in China are put forward, and the future development trend of recycling technology is foreseen. The purpose of this paper is to provide some valuable references for the decision-makers of waste TWC management, and hopefully to provide inspiration for related scholars on the future research direction of waste TWC recycling technology.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jenvman.2021.114383 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Decelerating catalyst aging of natural gas engines using organic Rankine cycle under road conditions.
Heliyon
June 2024
School of Mechanical Engineering, Beijing Institute of Technology, Zhongguancun South Street No.5, 100081 Beijing, China.
High exhaust temperature is an intrinsic nature of natural gas engines which underlies power de-rating and thermal aging of after-treatment system; therefore, this study integrates an organic Rankine cycle (ORC) system between engine and it's three-way catalyst (TWC) to address these challenges. ORC facilitates power output enhancement through exhaust energy recovery and alleviates thermal aging by reducing exhaust temperature. To estimate the effectiveness of this hypothesized system, a simulation-based investigation is performed.
View Article and Find Full Text PDFInfluence of tomato waste composts on dry matter and heavy metals content in cucumber and summer squash seedlings.
J Air Waste Manag Assoc
September 2023
Department of Agricultural Engineering, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia.
Huge quantities of agricultural waste are available annually in Saudi Arabia, which are not well exploited, leading to large environmental pollution and health problems. The use of different proportions of tomato waste compost (TWC) mixed with commercial peat-moss as a natural, economical, cheap and environmentally friendly fertilizer for fertilizing vegetables is very important, therefore, this study is concerned with investigating and evaluating the dry matter content (DM) and the accumulated heavy metal contents (HMs) in the root and leaf seedlings tissues of cucumber and summer squash plants as a result of using this fertilizer. Five ratios of mixtures (vermiculite: peat moss: TWC by weight) used in the experiment, and the TWC in the mixture represents 0, 5, 10, 15 and 20% (by wieght).
View Article and Find Full Text PDFA review on management of waste three-way catalysts and strategies for recovery of platinum group metals from them.
J Environ Manage
March 2022
State Key Laboratory of Pollution Control and Resource Reuse, Shanghai, PR China; School of Environmental Science and Engineering, Tongji University, Shanghai, PR China.
Article Synopsis
- Platinum group metals (PGMs) like platinum, palladium, and rhodium are important for car exhaust systems and are mainly found in a few countries.
- The demand for these metals is rising, especially in China, but they are rare, so recycling old car parts can help balance supply and demand while being good for the environment.
- The paper talks about how different countries manage waste from these car parts, especially in China, and suggests ways to improve recycling methods for the future.
From Waste to Green Applications: The Use of Recovered Gold and Palladium in Catalysis.
Molecules
August 2021
Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, UK.
The direct use in catalysis of precious metal recovery products from industrial and consumer waste is a very promising recent area of investigation. It represents a more sustainable, environmentally benign, and profitable way of managing the low abundance of precious metals, as well as encouraging new ways of exploiting their catalytic properties. This review demonstrates the feasibility and sustainability of this innovative approach, inspired by circular economy models, and aims to stimulate further research and industrial processes based on the valorisation of secondary resources of these raw materials.
View Article and Find Full Text PDFInfluence of tomato waste compost ratios on plant growth and fruit quality of cucumber and summer squash.
J Air Waste Manag Assoc
September 2021
Department of Agricultural Engineering, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia.
Peat-moss (Sphagnum spp.), is currently an expensive material and a nonrenewable resource with variable properties. Therefore, its use should be gradually reduced.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!