Recovery of manganese oxides from spent alkaline and zinc–carbon batteries. An application as catalysts for VOCs elimination

Advances in Manganese Pollution and Its Bioremediation

“…These hold several dangerous metal pollutants, and the unprocessed release causes severe contamination of the surrounding (Ge et al 2004). The utilization of batteries has enlarged in the previous years due to their adaptability, reduced price, and necessities of the electronic production (Gallegos et al 2013). Batteries find their applications in radios, remotes, calculators, recorders, cameras, watches, and in several additional electronic items (Sayilgan et al 2009).…”

“…Chemical methods could be used to remove manganese, but it will produce potential hazardous chemicals such as ammonia and soda ash into the environment (Han et al 2013). The chemical techniques applied for Mn removal from electrolytic manganese slag offer some drawback such as huge utilization of strong acid, small removal efficiency, stringent necessity of equipments, and being quite unsafe (Gallegos et al 2013). The reward of reprocessing Mn from a profitable ecological and industrial point of view depends on several features, counting transportation, recycling techniques, and resources to be utilized.…”

Electro chemical and photo catalytic studies of MnO2 nanoparticle from waste dry cell batteries

“…The waste batteries present serious problems due to their toxicity, abundance and longevity in the environment [1]. The hydrometallurgical methods are the most popular process in all over the world because of its environmental suitability and economical coasts for treating even low zinc and manganese containing materials on small scale with high purity and low energy requirements [2,3].…”

“…In this study, we show how to recover manganese as MnO 2 from consumed dry cell using a hydrometallurgical process, without altering the concentration of zinc in solutions that can be recovered by precipitation or electro winning [4]. The aim of this work is to study the applicability of electrochemical and photocatalytic enactment of MnO 2 using a hydrometallurgical process and the catalytic action of MnO 2 is due to its high efficiency in the reduction/oxidation cycles [1]. The effects of the recovered conditions and crystallinity of MnO 2 on the catalytic performance in degradation of high concentration dyes (methylene blue indigo carmine and Rhodamine B) were intensively evaluated [5].Nanostructured materials have received enormous interest in recent years because of their unusual properties when compared with bulk materials.…”

“…1D nanostructure provides a good system for investigating the electrical and thermal transport properties in size and shape reduction [6][7][8]. The aim of this work is to study the applicability of electrochemical and photocatalytic enactment of MnO 2 using a hydrometallurgical process and the catalytic action of MnO 2 is due to their high efficiency in the reaction/oxidation cycles [1]. The effects of the recovered conditions and crystallinity of MnO 2 on the catalytic performance in degradation of high concentration dyes (methylene blue indigo carmine and Rhodamine B) were thoroughly evaluated [5].…”