Onuegbu Theresa

Selective Recovery of Silver from Cell Phone and Television Printed Circuit Boards via Organic Acids

Nwagbara Nkechi, Onuegbu Theresa, Abuh.A.Mark, Stephenson Marvel, Okoye-Anigbogu & Nwagbara Chukwueke · Journal of Materials Science Research and Reviews · 2025

Electronic waste (e-waste) is growing rapidly worldwide and represents a significant environmental threat due to technological advancements. The environmental impacts of e-waste disposal are gaining increasing global attention. Recovery methods used in developing countries often...

Open access Research Article 10.9734/jmsrr/2025/v8i3440

Effect of Organic Acid Concentration and Leaching Time on the Efficiency of Nickel and Zinc Recovery from Waste Printed Circuit Boards of Mobile Phones

Nwagbara Nkechi, Onuegbu Theresa & Nwagbara Chukwueke · International Research Journal of Pure and Applied Chemistry · 2025

Aims: The present work evaluated the effect of organic acid concentration and reaction time on the recovery of Zn and Ni from waste printed circuit boards of cell phone. Study design:  A survey research design was adopted. Place and Duration of Study: Materials and Energy Technol...

Open access Research Article 10.9734/irjpac/2025/v26i4934