International Journal of Advanced Engineering Research and Science (IJAERS) Peer-Reviewed Journal ISSN: 2349-6495(P) | 2456-1908(O) Vol-9, Issue-2; Feb, 2022 Journal Home Page Available: https://ijaers.com/ Article DOI: https://dx.doi.org/10.22161/ijaers.92.29 www.ijaers.com Page | 259 A Review on Nickel Recovery of Batteries by chemical Process Jaqueline Tomasini Orth 1 , Andreia Cristina Furtado 1 , José Ricardo Cezar Salgado 2 1 Interdisciplinary Graduate Program in Energy and Sustainability, Latin American Institute of Technology, Infrastructure and Territory. Foz do Iguaçu, Paraná, Brazil. Email: jaqueorth@hotmail.com 2 Latin American Institute of Life and Nature Sciences, Federal University of Latin American Integration. Foz do Iguaçu, Paraná, Brazil. Email : jose.salgado@unila.edu.br Received: 13 Dec 2021, Received in revised form: 12 Feb 2022, Accepted: 20 Feb 2022, Available online: 28 Feb 2022 ©2022 The Author(s). Published by AI Publication. This is an open access article under the CC BY license (https://creativecommons.org/licenses/by/4.0/). Keywords— Batteries, chemical process, nickel, recovery, environmental impact. Abstract— There is a growing concern about the environmental impacts that batteries can cause if there is no correct destination at the time of disposal. Therefore, this article presents a review on the recovery of nickel and metals that are contained in batteries through chemical processes. With this study, it is possible to better understand how some processes available for nickel restoration work and, after recovery, their possible applications in different areas. It is possible to notice during the review that many authors cite the use of some additives or alloys for doping, which brings higher rates of nickel recovery and reuse. The main objective of this review is to form a database with recent research and that it is possible to give direction to new laboratory experiments and future work. I. INTRODUCTION The generation of sustainable energy has been increasing every year, and consequently, it is necessary to store this energy for later use. Thus, it is recommended that this storage be in sustainable and economical energy converter systems. An energy storage system that is gaining ground are batteries, as they have different sizes, models and capacities. However, there is still much to be evaluated in this area, especially about the environmental impacts caused both in the production and disposal stages [4]. Studies in relation to environmental impacts have been carried out and updated every year. A way to get to know these studies better is through the International Conference on Heavy Metals in the Environment, which was created in 1975 in Toronto, Canada, where every two years it publishes research on topics related to heavy metals, soil contamination and consequences for the environment. Many of these surveys indicate that there are significant numbers of people with high levels of contamination and diseases caused by heavy metals. This is mainly due to incorrect disposal, which end up falling into fertile planting soil and river sources that supply communities and irrigate crops [23]. World battery production accounts for several billion per year, and Ni-Cd and Ni-MH batteries are among the most used systems in recent decades, however, there has been a great concern regarding the disposal of used batteries, because the species of metals used to manufacture these batteries are highly toxic [8]. In addition to high production, there is another question that must be taken into account, which is the illegal import of batteries from Paraguay. As the city of Foz do Iguaçu is a triple border city, it becomes more susceptible to the illegal importation and commercialization of this material. According to data from the customs balance issued and published by the Federal Revenue, in 2019 there was an increase of approximately 150% in the seizure of batteries and approximately 66% in electronics, these numbers are a comparison between the years 2018 and 2019 [19].