Green environment and circular economy: A state-of-the-art analysis

Structured environments are considered an essential topic in the circular economy application. Circular techniques to purify wastewater and regenerate raw materials should be developed to reduce the environmental effect of industry. Different concentration technologies and energy delivery techniques compared to economically practical and environmentally pleasant treatment systems. Ecological sustainability is one of the world's most important concerns for every person. In particular, Green Environment (G.E.) is defined as economic operations relating to the production, distribution, and use of commodities and services that, to prevent significant environmental risks and ecological scars, contribute to a long-term increase in human well-being in future generations. There are no common specific and quantitative indicators of the environment. For existence as a species in its most significant meaning, the Circular Economy (C.E.) notion is essential. Therefore, it is necessary to acknowledge its fundamental limits because of its critical importance. It mainly aims to save precious resources and minimize CO2 emissions to avoid the GE-CE model from degrading the environment. Although the phrase circular economy is not used openly and often in literature, related notions, such as life cycle research, energy consumption reduction, energy efficiency, and the project's carbon/energy, are evident. The application involves problems such as construction difficulties, durability, and a lifecycle cost-benefit assessment are highlighted. Different study subjects are recommended for practical questions such as design efficiency, construction difficulties, timely maintenance, and a lifecycle evaluation to achieve 94.5%.