Journal
ENERGIES
Volume 14, Issue 15, Pages -Publisher
MDPI
DOI: 10.3390/en14154483
Keywords
mercury ion; corn cob; activated carbon; adsorption
Categories
Funding
- National Key RAMP
- D Program of China [2019YFD1100603]
- Heilongjiang Province Science and Technology Plan, Provincial Academy Science and Technology Cooperation Project [YS20B01]
Ask authors/readers for more resources
In this study, corn cob was used to prepare activated carbon with high adsorption capacity for mercury ions using KOH and KMnO4 modifications. The optimal conditions for mercury ion adsorption were determined through experiments, and the adsorption process was found to mainly involve physical adsorption, surface complexation, and ion exchange.
In this study, corn cob was used as raw material and modified methods employing KOH and KMnO4 were used to prepare activated carbon with high adsorption capacity for mercury ions. Experiments on the effects of different influencing factors on the adsorption of mercury ions were undertaken. The results showed that when modified with KOH, the optimal adsorption time was 120 min, the optimum pH was 4; when modified with KMnO4, the optimal adsorption time was 60 min, the optimal pH was 3, and the optimal amount of adsorbent and the initial concentration were both 0.40 g/L and 100 mg/L under both modified conditions. The adsorption process conforms to the pseudo-second-order kinetic model and Langmuir model. Scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and Zeta potential characterization results showed that the adsorption process is mainly physical adsorption, surface complexation and ion exchange.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available