Publication: Palladium recovery from spent Pd plating solutions using Lewatit TP 214 resin
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Date
2022-03-01
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Abstract
This study aims to explore the recovery of palladium (Pd(II)) ions using Lewatit TP 214 resins. Waste Pd(II) ions with ammonia complex procured from a precious metal plating were selected as the source solution. In the experimental studies, two stock solutions of 60 ppm Pd(II) with a pH value of 4.0 and 7.5 were prepared as initial solutions. The experiments were performed by altering four parameters: solution pH, time 15-180 min, temperature 25 degrees C-60 degrees C, and amount of resin 100-400 mg. It was proved that the recovery percentage increased with higher temperature and resin at lower pH values. The Pd(II) recovery percentage increased with a temperature rise, reaching 100% after 40 min at pH 4.0 and 60 degrees C. On the other hand, a bit lower efficiency (95%) was attained after 180 min at pH 7.5 and 60 degrees C. Using Lewatit TP 214, the computed activation energies for Pd(II) recovery are 17.73 and 15.62 kJ/mol at pH 4.0 and 7.5, respectively. Considering these activation energy values, a mixed mechanism dominated the recovery of Pd(II).
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Tarımsal Bilimler, Ziraat, Toprak ve Bitki Besleme, Toprak ve Su Muhafazası ve Amenajmanı, Havza Yönetimi, Kimya Mühendisliği ve Teknolojisi, Mühendislik ve Teknoloji, Agricultural Sciences, Agriculture, Soil and Plant Feed, Soil and Water Storage and Management, Watershed Management, Chemical Engineering and Technology, Engineering and Technology, MÜHENDİSLİK, KİMYASAL, Mühendislik, Mühendislik, Bilişim ve Teknoloji (ENG), SU KAYNAKLARI, Çevre / Ekoloji, Tarım ve Çevre Bilimleri (AGE), ENGINEERING, CHEMICAL, ENGINEERING, Engineering, Computing & Technology (ENG), WATER RESOURCES, ENVIRONMENT/ECOLOGY, Agriculture & Environment Sciences (AGE), Genel Mühendislik, Su Bilimi ve Teknolojisi, Kimyasal Sağlık ve Güvenlik, Akışkan Akışı ve Transfer İşlemleri, Kimya Mühendisliği (çeşitli), Mühendislik (çeşitli), Genel Kimya Mühendisliği, Kolloid ve Yüzey Kimyası, Kataliz, Fizik Bilimleri, General Engineering, Water Science and Technology, Chemical Health and Safety, Fluid Flow and Transfer Processes, Chemical Engineering (miscellaneous), Engineering (miscellaneous), General Chemical Engineering, Colloid and Surface Chemistry, Catalysis, Physical Sciences, Palladium recovery, Waste plating solution, Ion-exchange resin, Lewatit TP 214, ION-EXCHANGE-RESINS, CHLORIDE SOLUTIONS, FUNCTIONAL-GROUPS, ADSORPTION, COMPLEXES, REMOVAL, MEDIA
Citation
ÇETİNER B. N., Yegul E. U., Zeytuncu Gökoğlu B., AKTAŞ S., "Palladium recovery from spent Pd plating solutions using Lewatit TP 214 resin", DESALINATION AND WATER TREATMENT, cilt.253, ss.211-222, 2022