Role of Resource Circularity in Carbon Neutrality

Shinsuke Murakami, Kotaro Shimizu, Chiharu Tokoro and Takashi Nakamura ()
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Shinsuke Murakami: Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
Kotaro Shimizu: Environment and Energy Department, Mitsubishi UFJ Research and Consulting Co., Ltd., 5-11-2 Toranomon, Minato-ku, Tokyo 105-8501, Japan
Chiharu Tokoro: Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
Takashi Nakamura: Fukuoka Research Commercialization Center for Recycling Systems, 2-1 Hibikino, Wakamatsu-ku, Kitakyusyu-shi 808-0135, Japan

Sustainability, 2022, vol. 14, issue 24, 1-13

Abstract: With the help of circular strategies, products can be used longer (i.e., reuse, repair, and refurbish). Products that are difficult to use will be recycled efficiently. The present paper provides actionable guidelines for reducing environmental impact at all stages of a product’s life cycle, including the manufacture and assembly of the materials that make up the product, environmental impacts during use, and environmental impacts at final disposal, as well as specific actions and evaluation mechanisms. The circular economy is a concept that encompasses specific actions and their evaluations. To clarify the contribution of this circular economy to carbon neutrality, the present paper highlights how it is important to recognize the role of carbon as both an energy carrier and a material. CO 2 is a waste product from burning and powering carbon. CO 2 must be disposed of like any other waste product, but carbon itself is also an energy carrier. Thus, when promoting the carbon cycle, it is important to harmonize carbon’s function as a material with its role as an energy carrier. The further introduction of renewable energy and societal shift towards circular economy would contribute to carbon neutrality and more resource efficient use in a mutually complementary manner.

Keywords: resource circularity; circular economy; thermodynamics; energy carrier (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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