Circular economy is a hot topic.
The definition of circular economy is complicated, and the standards vary in different countries, regions and industries. But there is a relatively general and popular definition.
Circular economy is also known as "resource cycling economy". The economy development pattern features resource conservation and recycling, in order to stay in harmony with the environment. It emphasizes on organizing economic activities in a feedback process of "resources-product-renewable resources". Low exaction, high utilization and low discharge are the key. All materials and energy are reasonably and sustainably used in this ongoing cycle, keeping the impact of economic activities on environment to the smallest possible extent.
The way to a circular economy is also different from country to country, region to region or industry to industry. But, it always has to work for one's development. Many researches on this topic emerge in recent years, together with lots of theoretical books and practical thesis in China and overseas.
This book will start with the end of traditional economy—the waste. It goes from the compliance management of waste through material closed-loop material,
threaded by waste diversion and utilization. This book will expound on the current inflection point of circular economy, explaining the opportunities and challenges of zero waste in different industries, and at the same time, points out a feasible roadmap to zero waste.
The waste discussed in this book, for the purpose of theoretical studies, refers to a broad sense of waste including solid, liquid and gas, etc.; but when dealing with various regulations and standards, unless otherwise specified, it only refers to a narrow sense of waste mainly in solid, as a common practice. This is in correspondence with the waste in material closed loop. Due to logistics challenge, liquid and gas are rarely discussed in material closed loop.
Moreover, this book uses entropy principle in traditional thermodynamics, from the perspective of mass balance and energy consumption, to analyse the most possible theoretical result of zero waste and material closed-loop strategy and development, as well as their influence on present society.
Last but not least, zero waste-related philosophy and ethics have also been discussed a little in this book.
Shanghai, China Jianming Yang