An alternative low-cost adsorbent for gold recovery from cyanide-leached liquors: Adsorption isotherm and kinetic studiesAdsorption Science and Technology - Tập 37 Số 1-2 - Trang 3-23 - 2019
Refiloe Tsolele, Fanyana M. Mtunzi, Michael J. Klink, Vusumzi Emmanuel Pakade
Pristine Macadamia nutshell-based activated carbons were chemically oxidized with different concentrations of H3PO4 and HNO3 to increase their surface adsorption properties and further explore if they could be an attractive alternative low-cost adsorbent for gold recovery from cyanide-leached liquors. The modified activated ca...... hiện toàn bộ
The influence of different organic solvents on the size and shape of asphaltene aggregates studied via small-angle X-ray scattering and scanning tunneling microscopyAdsorption Science and Technology - Tập 34 Số 2-3 - Trang 244-257 - 2016
Yurii V. Larichev, Anna V. Nartova, Oleg N. Martyanov
An influence of various organic compounds on aggregation of asphaltenes separated from Tartar oil was studied by small-angle X-ray scattering and scanning tunneling microscopy methods. The compounds such as cyclohexane, methanol, formic acid, heptane, tetrabutylammonium fluoride, acetonitrile, decane, hexanol-1, furfural, and octene-1, added to the solution of asphaltenes in toluene, were...... hiện toàn bộ
Maximum Bleaching of Vegetable Oils by Acid-Activated Bentonite: Influence of Nanopore RadiusAdsorption Science and Technology - Tập 30 Số 1 - Trang 97-104 - 2012
Müşerref Önal, Yüksel Sarıkaya
The optimum conditions necessary for preparing a bleaching earth (BE) with maximum bleaching power (BP) towards soybean oil (SO) and cottonseed oil (CSO) were investigated. BEs were obtained by H2SO4 activation of a white calcium bentonite (CaB) sample from the Kütahya region of Turkey. After drying for 4 h at 105 °C, the CaB samples were activate...... hiện toàn bộ
Application of Kinetic Models to the Sorption of Copper(II) on to PeatAdsorption Science and Technology - Tập 20 Số 8 - Trang 797-815 - 2002
Yuh‐Shan Ho, Gordon McKay
A comparison of the kinetics of the sorption of copper(II) on to peat from aqueous solution at various initial copper(II) concentrations and peat doses was made. The Elovich model and the pseudo-second order model both provided a high degree of correlation with the experimental data for most of the sorption process. There was a small discrepancy at the initial stages of sorption which sug...... hiện toàn bộ
Pore Characterization of Carbonaceous Materials by DFT and GCMC Simulations: A ReviewAdsorption Science and Technology - Tập 21 Số 5 - Trang 389-423 - 2003
D.D. Do, H.D. Do
A review is given of the pore characterization of carbonaceous materials, including activated carbon, carbon fibres, carbon nanotubes, etc., using adsorption techniques. Since the pores of carbon media are mostly of molecular dimensions, the appropriate modern tools for the analysis of adsorption isotherms are grand canonical Monte Carlo (GCMC) simulations and density functional theory (D...... hiện toàn bộ
Colour Removal from Dye Wastewater Using Sugar Cane Dust as an AdsorbentAdsorption Science and Technology - Tập 17 Số 4 - Trang 269-282 - 1999
S. D. Khattri, Maya Shankar Singh
Decolouration of dilute solutions of basic dye stuff was carried out using sugar cane dust as an adsorbent. It was found that low adsorbate concentration, small particle size of the adsorbent, a temperature of 25°C and a pH value of 7.5 for the medium all favour the removal of dye from aqueous solutions. The percentage of dye adsorbed by sugar cane dust decreased from 96.48% to 83.32% and...... hiện toàn bộ