scispace - formally typeset
Search or ask a question
Author

Han Wang

Bio: Han Wang is an academic researcher from Kunming University of Science and Technology. The author has contributed to research in topics: Xanthate & Malachite. The author has an hindex of 8, co-authored 20 publications receiving 179 citations.
Topics: Xanthate, Malachite, Adsorption, Chemistry, Copper

Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, salicylic acid (SA) has been used for adsorption on pyrite and chalcopyrite surfaces by surface-adsorption experiments.

76 citations

Journal ArticleDOI
TL;DR: In this article, lead nitrate (Pb(NO3)2) was used to activate the depressed sphalerite surface by zinc sulfate (ZnSO4).

55 citations

Journal ArticleDOI
TL;DR: In this paper, the authors used Na2S to modify the cuprite surface and enhance the floatability of cuprite, and the results showed that an appropriate quantity of Na 2S improves the flotation recovery of Cuprite.

43 citations

Journal ArticleDOI
TL;DR: In this paper, Pb(NO3)2 is used to pretreat malachite, and the sulfidization mechanism of Malachite was studied through microflotation experiments, zeta-potential determination, adsorption tests, XPS and ToF-SIMS.

39 citations

Journal ArticleDOI
TL;DR: In this article, the activation mechanism of copper sulfate (CuSO4) for sphalerite surfaces depressed with ZnSO4 and their interactions were investigated through microflotation experiments, zeta-potential determination, X-ray photoelectron spectroscopy (XPS), xanthate adsorption experiments, time-of-flight secondary-ion mass spectrometry (TOF-SIMS), and local electrochemical impedance spectrography (LEIS).

35 citations


Cited by
More filters
Journal ArticleDOI
01 Oct 2020-Water
TL;DR: In this paper, the distribution of five heavy metals (Cd, Pb, Cu, Zn, and Fe) across the various stages of treatment in three selected sewage treatment facilities and their receiving waterbodies in the Eastern Cape Province, South Africa.
Abstract: This study assessed the distribution of five heavy metals (Cd, Pb, Cu, Zn, and Fe) across the various stages of treatment in three selected sewage treatment facilities and their receiving waterbodies in the Eastern Cape Province, South Africa. Aqueous and solid (sludge) samples were collected monthly from September 2015 to February 2016. Quantitation was achieved by atomic absorption spectrometry after necessary sample preparations. Concentrations of heavy metal cations in the sludge generally varied from

125 citations

Journal ArticleDOI
TL;DR: In this paper, salicylic acid (SA) has been used for adsorption on pyrite and chalcopyrite surfaces by surface-adsorption experiments.

76 citations

Journal Article
TL;DR: In this paper, the thermal decomposition of coal-derived pyrite was studied using thermogravimetry combining with Fourier transform infrared spectroscopy (TG-FTIR) techniques to gain knowledge on the SO2 gas evolution process and formation mechanism.
Abstract: The thermal decomposition of the coal-derived pyrite was studied using thermogravimetry combining with Fourier-transform infrared spectroscopy (TG-FTIR) techniques to gain knowledge on the SO2 gas evolution process and formation mechanism during the thermal decomposition of the coal-derived pyrite. The results showed that the thermal decomposition of the coal-derived pyrite which started at about 400 ◦C was complete at 600 ◦C; the gas evolved can be established by combining the DTG peak, the Gram–Schmidt curve and in situ FTIR spectroscopic evolved gas analysis. It can be observed from the spectra that the pyrolysis products for the sample mainly vary in quantity, but not in species. It was proposed that the oxidation of the coal-derived pyrite started at about 400 ◦C and that pyrrhotite and hematite were formed as primary products. The SO2 released by the thermal decomposition of the coal-derived pyrite mainly occurred in the first pyrolysis stage between 410 and 470 ◦C with the maximum rate at 444 ◦C. Furthermore, the SO2 gas evolution and formation mechanism during the thermal decomposition of the coal-derived pyrite has been proposed.

58 citations

Journal ArticleDOI
TL;DR: A comprehensive review on the advancement of carbon-based nano zero valent iron (C-nZVI) particles for heavy metal remediation in soil and water is provided in this article .

56 citations

Journal ArticleDOI
TL;DR: In this article, lead nitrate (Pb(NO3)2) was used to activate the depressed sphalerite surface by zinc sulfate (ZnSO4).

55 citations