In glass recycling, waste glasses are crushed and melted to cullet. Cullet is a high-grade product that is mixed with virgin materials such as sand and limestone for manufacturing new glass bottles and containers. This cullet can be further categorized into internal and external cullet based on the feedstock used for manufacturing. The internal cullet is manufactured by crushing defective glass products such as bottles, which are rejected during a quality check at various manufacturing industries. The external cullet is manufactured by the processing of used bottles or other glass. Glass fines are low-grade products, which are used in the manufacturing mix of construction and car glass.

我国移动源减污降碳进展与展望

Global Industrial Waste Management Market Size and Share Analysis - Growth Trends and Forecasts

Electronic waste (e-waste) is any discarded electrical or electronic equipment. This applies to electrical or electronic equipment, which is either still functional or damaged and has been discarded as garbage. Electronic waste recycling is the process of extracting valuable materials, which can be reused in a new electronic appliance, after shredding the e-waste into tiny pieces. Some of these materials contain cadmium, lead, mercury, chromium, and other materials.

Diesel exhaust fluid (DEF) is a blended aqueous solution composed of 32.5% high-purity urea and 67.5% deionized water. It acts as a reactant for the functioning of the selective catalytic reduction (SCR) system, an advanced active emission control technology system. DEF is standardized as aqueous urea solution (AUS) 32 in ISO 22241. AUS 32 is registered as a trademark AdBlue by the German Association of the Automotive Industry (VDA).