Chemical synthesis kinetics and dimensional characterization of nano-lead oxide powder

Yıl 2022, Cilt: 9 Sayı: 1, 227 - 236, 28.02.2022

Damilola Tope Samsudeen Azeez Akeem Jımoh

https://doi.org/10.18596/jotcsa.928341

Öz

Systematic chemical decomposition, leaching, desulfurization, reducing and precipitation of spent lead-acid batteries to extract lead in oxide form as a valuable product using organic acid, salt of the acid, and hydrogen peroxide were studied in this present work. Citric acid was found a suitable leachant to dissolve lead. With 1 M citric acid, 2 M sodium citrate, and hydrogen peroxide, 180 min reaction time, solid/liquid ratio of 100 g/L, 30 °C temperature, and 500 rpm speed, > 97% extraction of lead in citrate form was achieved. Leaching kinetics followed 1 – 3(1 – X)2/3 + 2 (1 – X) = KCt ash diffusion controls dense constant-sized-spherical particles model with an activation energy of 8.3 kJ/mol. The precipitate was calcined at 400 °C to produce α- and β-PbO with a particle size of 19 nm which can be used as a raw material in the production of a new lead-acid battery.

Anahtar Kelimeler

Leaching, kinetic study, Leaching models, Nanoparticles

Destekleyen Kurum

Tertiary Education Trust fund of the Federal Republic of Nigeria and Centre for Science & Technology of the Non-aligned and Other Developing Countries (NAM S& T) for the RTF-DCS fellowship (NAM – 05/74/2015)

Proje Numarası

NAM – 05/74/2015

Teşekkür

The researchers express their profound gratitude to i-PSG of CSIR- National Metallurgical Laboratory Jamshedpur, India for providing analytical facilities to fulfill the experimental data collection.

Kaynakça

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