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The effect of humic acid on the adsorption of REEs on kaolin by Yingxin Wan; Congqiang Liu is a Materials Science article available to read on EtoBox.
What is The effect of humic acid on the adsorption of REEs on kaolin about?
For a better understanding of adsorption of the rare earth elements (REEs) onto minerals and its controlling factors, adsorption experiments were performed at pH range of from 3 to 10 with kaolin (1500 mg/L) in a matrix of various concentration of NaNO 3 and about 20 g/L of the total REEs as well as various amounts of humic acid (HA). The adsorption of HA onto the kaolin occurred over a wide pH range and decreases with increasing pH and with increasing HA concentration. The results show that humic acid has ability to either increase or decrease the adsorption of the REEs onto kaolin, depending on pH, which may be related to their speciation distribution, interaction of HA with the mineral surface. Furthermore, the light REEs are more adsorbed onto kaolin in presence of higher concentration of HA, presumably because the increase in HA concentration in the solution enhance stronger complexing of HA with heavy REEs as compare to light REEs. The ionic strength has strong effect on the adsorption of HA and REEs onto the kaolin but little on the REEs fractionation. The results presented here indicate that mineral/water adsorption may generate the enrichment of the dissolved heavy REEs in
Who reads The effect of humic acid on the adsorption of REEs on kaolin?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Yingxin Wan; Congqiang Liu
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0927-7757)
- Published
- 2006
- Language
- EN
- Field
- Materials Science (Physical Sciences)