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Your search keyword '"Lankun Cai"' showing total 2 results
Start Over Author "Lankun Cai" Journal journal of saudi chemical society
2 results on '"Lankun Cai"'

1. Recovering platinum from wastewater by charring biofilm of microbial fuel cells (MFCs)

Author

Yiyang Liu, Pengfei Song, Ruizhe Gai, Chi Yan, Yang Jiao, Di Yin, Lankun Cai, and Lehua Zhang

Subjects
Chemistry, QD1-999
Abstract

Reduction in and recovery of precious metals are research hotspots in the environmental engineering field. In this study, we investigated the transformation and distribution of platinum in microbial fuel cells (MFCs) and demonstrated a feasible approach to recover platinum (Pt) from wastewater with less than 16.88 mg/L platinum through charring biofilms in MFCs and generate Pt/C catalyst. The optimal reaction condition was identified, and charred biofilms were analyzed via SEM-EDS, XRD and XPS. Results showed that less than 10% of Pt was in MFC effluents, and less than 0.5% was in the cathode chamber when the influent concentration was below 16.88 mg/L. Close to 40% of Pt could be recovered. The recovery efficiency could be higher should the reactions run longer. SEM-EDS and XRD results indicated that the metallic form Pt0 is one of the reduction products in MFCs. XPS results induced that Pt (IV) was reduced to Pt (II) and Pt0. Keywords: Microbial fuel cells, Platinum, Bio-reduction, Recovery, Sludge

Published
2019
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2. Recovering platinum from wastewater by charring biofilm of microbial fuel cells (MFCs)

Author

Chi Yan, Yiyang Liu, Gai Ruizhe, Pengfei Song, Lehua Zhang, Yang Jiao, Di Yin, and Lankun Cai

Subjects
Microbial fuel cell, 010405 organic chemistry, chemistry.chemical_element, General Chemistry, 010402 general chemistry, 01 natural sciences, 0104 chemical sciences, Catalysis, lcsh:Chemistry, Metal, lcsh:QD1-999, chemistry, X-ray photoelectron spectroscopy, Wastewater, Chemical engineering, visual_art, visual_art.visual_art_medium, Charring, Platinum, Effluent
Abstract

Reduction in and recovery of precious metals are research hotspots in the environmental engineering field. In this study, we investigated the transformation and distribution of platinum in microbial fuel cells (MFCs) and demonstrated a feasible approach to recover platinum (Pt) from wastewater with less than 16.88 mg/L platinum through charring biofilms in MFCs and generate Pt/C catalyst. The optimal reaction condition was identified, and charred biofilms were analyzed via SEM-EDS, XRD and XPS. Results showed that less than 10% of Pt was in MFC effluents, and less than 0.5% was in the cathode chamber when the influent concentration was below 16.88 mg/L. Close to 40% of Pt could be recovered. The recovery efficiency could be higher should the reactions run longer. SEM-EDS and XRD results indicated that the metallic form Pt0 is one of the reduction products in MFCs. XPS results induced that Pt (IV) was reduced to Pt (II) and Pt0. Keywords: Microbial fuel cells, Platinum, Bio-reduction, Recovery, Sludge

Published
2019

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