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Yuan J, Ding Z, Li J, Yu A, Wen S, Bai S. An innovative method to degrade xanthate from flotation tailings wastewater in acid mine drainage (AMD) system: Performance, degradation mechanism and pathways. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 349:119395. [PMID: 37879221 DOI: 10.1016/j.jenvman.2023.119395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 09/22/2023] [Accepted: 10/10/2023] [Indexed: 10/27/2023]
Abstract
This study objective is to degrade xanthate from flotation tailings wastewater by using a coagulation-flocculation co-Fenton oxidation process in an acid mine drainage (AMD)-H2O2 system. More than 98% sodium butyl xanthate (SBX) removal rate was achieved by the method under optimal conditions. The acids and Fe2+ in AMD were sufficient to initiate a Fenton reaction at the aid of H2O2. Furthermore, iron ions were reduced to an extremely low level (0.19 mg/L) by participating in an oxidation process. Meanwhile, the Cu2+ ions in AMD facilitated the coagulation-flocculation process. Comparison experiments confirmed that the method was superior to the AMD alone (54.26%) and H2O2 alone (32.23%) in terms of performance in degrading SBX. The kinetic results showed that SBX degradation followed a pseudo first-order kinetic model. Additionally, the electron paramagnetic resonance (EPR) and quenching results suggested that hydroxyl radicals (•OH) were the main active species in AMD-H2O2 system. Degradation products were analyzed, and two possible pathways of SBX degradation were proposed. One pathway displayed that the SBX was first transformed into butyl xanthate peroxide (BPX), CO32- and S2O32-, and then further decomposed into CO2, H2O and SO42- under the ongoing •OH attack. Another pathway showed that precipitates consisting of butyl copper xanthate and iron oxide species were generated during the SBX degradation. This study provides a novel perspective on the innovative application of AMD in Fenton oxidation and provides a strong basis for the green and sustainable treatment of xanthate wastewater in tailings.
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Affiliation(s)
- Jiaqiao Yuan
- Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, China
| | - Zhan Ding
- Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, China
| | - Jie Li
- Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China
| | - Anmei Yu
- Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China
| | - Shuming Wen
- Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, China; Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources, Kunming, 650093, China
| | - Shaojun Bai
- Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, China; Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources, Kunming, 650093, China.
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Tin-based organic sulfides with highly reversibility of conversion reaction synthesized at room temperature as anode for lithium storage. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.137100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3
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Effects of Potassium Propyl Xanthate Collector and Sodium Sulfite Depressant on the Floatability of Chalcopyrite in Seawater and KCl Solutions. MINERALS 2020. [DOI: 10.3390/min10110991] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study demonstrates the effects of a potassium propyl xanthate (PPX) collector and sodium sulfite (Na2SO3) depressant on pure chalcopyrite in synthetic seawater (SSW) and potassium chloride (KCl) solutions. SSW solutions with 35 g/L of salt and 0.01-M KCl were used for microflotation and zeta potential tests. Particles sized between 200# and 100# (75–150 µm) were used, and the pH was between 8.0 and 8.5. The surface of the mineral and its interaction with the collector were characterized using Raman spectrometry. The zeta potential of the chalcopyrite was measured in KCl solution at a pH range of 3–12 using the collector and depressant at a monodispersed particle size of 635# (20 µm). The results indicate that the floatability of chalcopyrite is not affected by the presence of PPX collectors in SSW solutions. SSW provides better recoveries than KCl solutions with values of 91.42% and 88.15%, respectively. The Na2SO3 depressant does not hinder the mineral floatability throughout the entire concentration range used; however, special care must be taken when adjusting the pH range to avoid increasing the zeta potential.
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4
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Selectivity in the flotation of copper with xanthate over other ions present in wastewater: An experimental and computational study. J Mol Graph Model 2020; 98:107587. [DOI: 10.1016/j.jmgm.2020.107587] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 02/24/2020] [Accepted: 03/11/2020] [Indexed: 11/24/2022]
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Vorobyev S, Saikova SV, Novikova SA, Fetisova OY, Zharkov SM, Krylov AS, Likhatski MN, Mikhlin YL. Colloidal and Immobilized Nanoparticles of Lead Xanthates. ACS OMEGA 2019; 4:11472-11480. [PMID: 31460252 PMCID: PMC6681991 DOI: 10.1021/acsomega.9b00841] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 06/21/2019] [Indexed: 06/10/2023]
Abstract
Although nanoparticles of heavy metal xanthates and their hydrosols can play important roles in froth flotation, environmental issues, analytics, and manufacturing of metal sulfide nanocomposites, they have received little attention. We studied colloidal solutions and immobilized particles prepared via interaction of aqueous lead nitrate with alkyl xanthates applying UV-vis absorption spectroscopy, dynamic light scattering, zeta potential measurement, thermogravimetry analysis, Fourier transform infrared spectroscopy, Raman scattering, X-ray photoelectron spectroscopy, atomic force microscopy, and transmission electron microscopy. The hydrodynamic diameter of colloidal particles of Pb(SSCOR)2 decreased from 500 to 50 nm with an increase in the alkyl radical length and the initial xanthate to lead ratio (X/Pb); the zeta potential magnitude varied similarly, although it remained negative. The effect of pH in the range of 4.5-11 was minor, but the colloids produced using excess of Pb2+ in alkaline media were close to PbX and decomposed much easier than PbX2. The uptake of lead xanthates on supports was generally low because of negative charges of the colloids; however, 50-100 nm thick PbX2 films were deposited on PbS and SiO2 from the media of X/Pb < 2 and pH < 9 because of preadsorption of Pb2+, while nanorods formed on highly oriented pyrolytic graphite.
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Affiliation(s)
- Sergey
A. Vorobyev
- Institute
of Chemistry and Chemical Technology, Federal
Research Center “Krasnoyarsk Scientific Center” of the
Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50/24, Krasnoyarsk 660036, Russia
| | | | - Svetlana A. Novikova
- Institute
of Chemistry and Chemical Technology, Federal
Research Center “Krasnoyarsk Scientific Center” of the
Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50/24, Krasnoyarsk 660036, Russia
| | - Olga Yu. Fetisova
- Institute
of Chemistry and Chemical Technology, Federal
Research Center “Krasnoyarsk Scientific Center” of the
Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50/24, Krasnoyarsk 660036, Russia
| | - Sergey M. Zharkov
- Siberian
Federal University, Svobodny
pr. 79, Krasnoyarsk 660041, Russia
- Kirensky
Institute of Physics, Federal Research Center
“Krasnoyarsk Scientific Center” of the Siberian Branch
of the Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk 660036, Russia
| | - Alexander S. Krylov
- Kirensky
Institute of Physics, Federal Research Center
“Krasnoyarsk Scientific Center” of the Siberian Branch
of the Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk 660036, Russia
| | - Maxim N. Likhatski
- Institute
of Chemistry and Chemical Technology, Federal
Research Center “Krasnoyarsk Scientific Center” of the
Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50/24, Krasnoyarsk 660036, Russia
| | - Yuri L. Mikhlin
- Institute
of Chemistry and Chemical Technology, Federal
Research Center “Krasnoyarsk Scientific Center” of the
Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50/24, Krasnoyarsk 660036, Russia
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Liu S, Xie L, Liu G, Zhong H, Wang Y, Zeng H. Hetero-difunctional Reagent with Superior Flotation Performance to Chalcopyrite and the Associated Surface Interaction Mechanism. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:4353-4363. [PMID: 30802069 DOI: 10.1021/acs.langmuir.9b00156] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Surface modification by chemical reagents is of profound importance to modulate the surface characteristic and functionality of materials, which has attracted tremendous interest in many research fields and industrial applications, such as froth flotation of minerals. In this work, a new reagent S-[(2-hydroxyamino)-2-oxoethyl]- O-octyl-dithiocarbonate ester (HAOODE) with heterodifunctional ligands was designed and synthesized to improve the flotability of chalcopyrite (CuFeS2). Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy results showed the co-adsorption of heterodifunctional ligands (i.e., dithiocarbonate and hydroxamate groups) of HAOODE on chalcopyrite via Cu(I)-S and Cu(II)-O covalent bonds. The bubble probe atomic force microscopy (AFM) technique was employed to quantitatively measure the air bubble-chalcopyrite interactions with and without the reagent adsorption. AFM force results revealed that the bubble could be more readily attached to flat chalcopyrite after HAOODE treatment under different hydrodynamic conditions because of the enhanced hydrophobic interaction, with the decay length D0 increasing from 0.65 to 1.20 nm. The calculated bubble-particle interaction forces also demonstrated the critical influence of HAOODE treatment, hydrodynamic conditions, and bubble size on the interaction behavior and thin-film drainage process in flotation. In froth flotation, HAOODE exhibited superior recovery for chalcopyrite over pH 3-12 and excellent selectivity for chalcopyrite against pyrite (FeS2) above pH 10.5, as compared to the conventional reagent sodium isobutyl xanthate. This work provides a useful approach to develop effective reagents that could selectively adsorb on desired mineral surfaces through heterodifunctional ligands and to quantitatively evaluate the role of reagent adsorption in the interactions between air bubbles and mineral surfaces at the nano- and microscale. Our results show implications on developing molecular design principles of novel reagents for surface modifications of materials in a wide range of engineering and biological applications.
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Affiliation(s)
- Sheng Liu
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , China
- Department of Chemical and Materials Engineering , University of Alberta , Edmonton , Alberta T6G 1H9 , Canada
| | - Lei Xie
- Department of Chemical and Materials Engineering , University of Alberta , Edmonton , Alberta T6G 1H9 , Canada
| | - Guangyi Liu
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , China
| | - Hong Zhong
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , China
| | - Yixiang Wang
- Department of Food Science and Agricultural Chemistry , McGill University , Sainte Anne de Bellevue , Québec H9X 3V9 , Canada
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering , University of Alberta , Edmonton , Alberta T6G 1H9 , Canada
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Xie D, Zhang X, Morbidelli M, Wu H. Competitive Adsorption of Xanthates with Different Chain Lengths on Chalcopyrite Particles. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.5b04483] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Delong Xie
- Institute
for Chemical and Bioengineering, Department of Chemistry and Applied
Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Xinya Zhang
- Institute
for Chemical and Bioengineering, Department of Chemistry and Applied
Biosciences, ETH Zurich, 8093 Zurich, Switzerland
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Massimo Morbidelli
- Institute
for Chemical and Bioengineering, Department of Chemistry and Applied
Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Hua Wu
- Institute
for Chemical and Bioengineering, Department of Chemistry and Applied
Biosciences, ETH Zurich, 8093 Zurich, Switzerland
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9
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Juncal LC, Tobón YA, Piro OE, Della Védova CO, Romano RM. Structural, spectroscopic and theoretical studies on dixanthogens: (ROC(S)S)2, with R = n-propyl and isopropyl. NEW J CHEM 2014. [DOI: 10.1039/c4nj00708e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The properties of the two dixanthogens were interpreted in terms of the conformational flexibility of the n-propyl group compared with the isopropyl one.
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Affiliation(s)
- Luciana C. Juncal
- CEQUINOR (CONICET-UNLP)
- Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- 1900 La Plata, Argentina
| | - Yeny A. Tobón
- CEQUINOR (CONICET-UNLP)
- Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- 1900 La Plata, Argentina
| | - Oscar E. Piro
- Departamento de Física
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata and Institute IFLP (CONICET)
- 1900 La Plata, Argentina
| | - Carlos O. Della Védova
- CEQUINOR (CONICET-UNLP)
- Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- 1900 La Plata, Argentina
| | - Rosana M. Romano
- CEQUINOR (CONICET-UNLP)
- Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- 1900 La Plata, Argentina
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Zhang Y, Cao Z, Cao Y, Sun C. FTIR studies of xanthate adsorption on chalcopyrite, pentlandite and pyrite surfaces. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.06.015] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Kalgotra N, Gupta B, Kumar K, Pandey SK. O-Tolyldithiocarbonate Complexes of Iron(II) and Iron(III). PHOSPHORUS SULFUR 2012. [DOI: 10.1080/10426507.2011.614299] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Nidhi Kalgotra
- a Department of Chemistry , University of Jammu , Jammu , Jammu and Kashmir , India
| | - Bhawana Gupta
- a Department of Chemistry , University of Jammu , Jammu , Jammu and Kashmir , India
| | - Kuldeep Kumar
- a Department of Chemistry , University of Jammu , Jammu , Jammu and Kashmir , India
| | - Sushil K. Pandey
- a Department of Chemistry , University of Jammu , Jammu , Jammu and Kashmir , India
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