scholarly journals Plastics Recycling – Technology and Business in Japan

Author(s):  
Yoichi Kodera
2003 ◽  
Vol 19 (2) ◽  
pp. 77-92 ◽  
Author(s):  
Lee Hornberger

Rising resin prices and decreasing landfill availability accelerated the expansion of the consumer plastics recycling industry in the 1980's. Unfortunately, many of the recycling companies that were started during this optimistic time quickly learned that economic recycling of post-consumer waste was extremely difficult and they went out of business. Those recycling companies that survived managed to develop stable technologies and markets for their products. These businesses are models for their industry as well as for the emerging automotive and electronic plastics recycling industry. In this study, the annual sales, experience, markets, growth strategies, technology and leadership of 36 recycling firms were evaluated to determine the characteristics that helped these companies survive in this difficult industry. These recycling firms were located in the United States and in Europe. Four elements were found to be present in most of the surviving companies: a) a willingness to adapt to changes in the marketplace b) extensive knowledge of recycling technology c) financial and technical support and d) strong internal leadership.


2020 ◽  
Vol 27 (25) ◽  
pp. 4157-4164 ◽  
Author(s):  
Taku Fukuzawa ◽  
Junichi Nezu

Background: The complement system usually helps protect against microbial infection, but it could also be involved in the onset of various diseases. Inhibition of complement component 5 (C5) with eculizumab has resulted in a significant reduction of hemolysis, reduction of thromboembolic events, and increased survival in patients with Paroxysmal Nocturnal Hemoglobinuria (PNH). However, eculizumab requires frequent intravenous infusions due to the abundance of C5 in plasma and some patients may still experience breakthrough hemolysis. This review introduces the recent body of knowledge on recycling technology and discusses the likely therapeutic benefits of SKY59, a novel recycling antibody, for PNH and complement-mediated disorders. Methods: By using recycling technology, we created a novel anti-C5 antibody, SKY59, capable of binding to C5 pH-dependently. Results: In cynomolgus monkeys, SKY59 robustly inhibited C5 and complement activity for significantly longer than a conventional antibody. SKY59 also showed an inhibitory effect on C5 variant p.Arg885His, whereas eculizumab does not suppress complement activity in patients with this type of mutation. Conclusion: SKY59 is a promising anti-C5 biologic agent that has significant advantages over current therapies such as long duration of action and efficacy against C5 variants.


Recycling ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 31
Author(s):  
Linda Gaines ◽  
Qiang Dai ◽  
John T. Vaughey ◽  
Samuel Gillard

The expected rapid growth in electric vehicle deployment will inevitably be followed by a corresponding rise in the supply of end-of-life vehicles and their lithium-ion batteries (LIBs). The batteries may be reused, but will eventually be spent and provide a potential domestic resource that can help supply materials for future battery production. However, commercial recycling processes depend on profits from recovery of cobalt, use of which is being reduced in new cathode chemistries. The U.S. Department of Energy, therefore, established the ReCell Center in early 2019 to develop robust LIB recycling technology that would be economical even for batteries that contain no cobalt. The central feature of the technology is recovery of the cathode material with its unique crystalline cathode morphology intact in order to retain its value and functionality. Other materials are recovered as well in order to maximize revenues and minimize waste-handling costs. Analysis and modeling serve to evaluate and compare process options so that we can identify those that will be most economical while still minimizing energy use and environmental impacts. This paper provides background and describes highlights of the center’s first 2 years of operation.


2021 ◽  
Vol 11 (10) ◽  
pp. 4374
Author(s):  
Waldemar Ścierski

The most advantageous way of managing plastics, according to circular economy assumptions, is recycling, i.e., reusing them. There are three types of plastics recycling: mechanical, chemical and energy recycling. The products of the pyrolysis process can be used for both chemical and energy recycling. Possibilities of further use of pyrolysis products depend on their physicochemical parameters. Getting to know these parameters was the aim of the research, some of which are presented in this article. The paper presents the research position for conducting the pyrolysis process and discusses the results of research on pyrolysis products of waste plastics. The process was conducted to obtain the temperature of 425 °C in the pyrolytic chamber. Such a value was chosen on the basis of my own previous research and literature analysis. The focus was on the migration of sulfur and nitrogen, as in some processes these substances may pose a certain problem. Studies have shown high possibilities of migration of these elements in products of pyrolysis process. It has been shown that the migration of sulfur is similar in the case of homogeneous and mixed waste plastics—it immobilizes mainly in pyrolytic oil. Different results were obtained for nitrogen. For homogeneous plastics, nitrogen immobilizes mainly in char and oil, whereas for mixed plastics, nitrogen immobilizes in pyrolytic gas.


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