☆ 4.6 Article

Thiol-Silylated Cellulose Nanocrystals as Selective Biodepressants in Froth Flotation

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2023)

Related references

Note: Only part of the references are listed.

Article Environmental Sciences

Toward sustainable reprocessing and valorization of sulfidic copper tailings: Scenarios and prospective LCA

Lugas Raka Adrianto et al.

Summary: There is growing interest in reprocessing mining waste to recover valuable materials, but a quantitative environmental assessment for large-scale reprocessing is lacking. This study evaluates the environmental impacts and resource recovery potential of reprocessing sulfidic copper tailings in the EU. The results show that some reprocessing technologies have potential for reducing impact indicators, but energy-intensive processes may lead to suboptimal performance in terms of climate change and energy-related impacts. The trade-off between different impacts and the choice of displaced products should be carefully considered by decision makers. Implementing value recovery strategies for building materials can help mitigate climate impacts in the copper sector.

SCIENCE OF THE TOTAL ENVIRONMENT (2023)

Add to Collection

Article Materials Science, Paper & Wood

Aqueous bifunctionalization of cellulose nanocrystals through amino and alkyl silylation: functionalization, characterization, and performance of nanocrystals in quartz microflotation

Feliciana Ludovici et al.

Summary: Surface modifications of cellulose nanomaterials can significantly affect their properties and enhance their interactions with other solid particles. By reacting with amino and alkyl silanes, positively charged amino silane moieties and hydrophobic alkyl chains can be introduced onto cellulose nanocrystals. The bifunctionalization reaction showed better results and significantly increased the grafting amount.

CELLULOSE (2023)

Add to Collection

Article Forestry

Aminosilane-modified wood sponge for efficient CO2 capture

Zhongguo Wang et al.

Summary: Wood sponges with hierarchical porosity and high mechanical resilience are prepared by selectively removing lignin and grafting amine agents. These amine-grafted wood sponges exhibit a relatively high CO2 uptake, making them promising renewable CO2 capture materials.

WOOD SCIENCE AND TECHNOLOGY (2022)

Add to Collection

Article Engineering, Environmental

Prospective environmental assessment of reprocessing and valorization alternatives for sulfidic copper tailings

Lugas Raka Adrianto et al.

Summary: This study investigates different reprocessing pathways for copper tailings to produce secondary metals and building materials. It finds that only when all co-products are utilized, reprocessing can offer environmental benefits, saving from 25 to 930 kg CO2-eq per tonne of treated copper tailings. Recommendations are proposed to enhance the environmental performance of mine tailings reprocessing strategies for sustainable development of the metal industry.

RESOURCES CONSERVATION AND RECYCLING (2022)

Add to Collection

Article Green & Sustainable Science & Technology

Silylated Thiol-Containing Cellulose Nanofibers as a Bio-Based Flocculation Agent for Ultrafine Mineral Particles of Chalcopyrite and Pyrite

Ana Luiza Coelho Braga de Carvalho et al.

Summary: The study investigated the use of a new bio-based flocculation agent SiCNF in separating ultrafine mineral dispersions, showing promising results in turbidity removal for chalcopyrite and pyrite but lower efficiency for quartz. SiCNF could potentially be used as a selective flocculation agent for sulfide minerals.

JOURNAL OF SUSTAINABLE METALLURGY (2021)

Add to Collection

Article Chemistry, Physical

Study on selective adsorption of organic depressant on chalcopyrite and pyrite surfaces

Xu Bai et al.

Summary: This study investigated the selective depression mechanism of pyrite by SDD, showing that SDD can selectively depress pyrite under low alkaline conditions, increasing the difference in surface hydrophobicity between pyrite and chalcopyrite.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2021)

Add to Collection

Article Chemistry, Multidisciplinary

On the Colloidal Behavior of Cellulose Nanocrystals as a Hydrophobization Reagent for Mineral Particles

Robert Hartmann et al.

Summary: This study provides further insights into the behavior of functionalized cellulose nanocrystals as mineral hydrophobization agents, particularly identifying hexylamine cellulose nanocrystals (HACs) as an efficient collector for quartz flotation. The presence of a frother leads to a drastic reduction in particle-bubble attachment probabilities, while the combination of nanocellulose and frother concentration may improve quartz recovery by stabilizing froths. The study also distinguishes the antagonistic effect of frothers on attachment probabilities and their synergies with HACs in stabilizing froths through the hydrophobization mechanism.

LANGMUIR (2021)

Add to Collection

Article Engineering, Chemical

Evaluation of green synthetic depressants for sulfide flotation: Synthesis, characterization and floatation performance to pyrite and chalcopyrite

Sultan Ahmed Khoso et al.

Summary: This study developed a series of low molecular weight starch-based molecules through oxidative treatment of starch, with tricarboxystarch (sodium salt) identified as the most selective and effective depressant for pyrite in chalcopyrite flotation.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

Add to Collection

Article Engineering, Chemical

Tiopronin as a novel copper depressant for the selective flotation separation of chalcopyrite and molybdenite

Bingqiao Yang et al.

Summary: In this study, an environmentally friendly surfactant tiopronin was investigated as a novel copper depressant in copper-molybdenum sulfide separation for the first time. The results showed that tiopronin exhibited a strong depressing effect on chalcopyrite and achieved satisfactory separation with high selectivity over a wide pH range. The mechanism of depression was revealed to involve chemisorption of tiopronin on chalcopyrite surface through a strong chemical reaction, forming five-membered chelating rings.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

Add to Collection

Article Engineering, Chemical

Selective flotation of Cu-Mo sulfides using dithiothreitol as an environmental-friendly depressant

Hai Yan et al.

Summary: A small non-toxic compound, dithiothreitol (DTT), was introduced as an environmentally-friendly chalcopyrite depressant in Cu-Mo flotation separation. The results of flotation tests showed that DTT exhibited strong depression ability on chalcopyrite, while barely influencing the floatability of molybdenite. Adsorption mechanism studies indicated that DTT mainly adsorbed on chalcopyrite and rendered its surface hydrophilic, while hardly adsorbing on molybdenite.

MINERALS ENGINEERING (2021)

Add to Collection

Article Biochemistry & Molecular Biology

Post-modification of Cellulose Nanocrystal Aerogels with Thiol Ene Click Chemistry

Guus J. W. Aalbers et al.

BIOMACROMOLECULES (2019)

Add to Collection

Article Engineering, Chemical

The selective flotation behavior and adsorption mechanism of thiohexanamide to chalcopyrite

Yun Jia et al.

MINERALS ENGINEERING (2019)

Add to Collection

Article Engineering, Chemical

Investigating the selectivity of a xanthate derivative for the flotation separation of chalcopyrite from pyrite

Xiaoping Huang et al.

CHEMICAL ENGINEERING SCIENCE (2019)

Add to Collection

Article Chemistry, Physical

Study of butyl-amine nanocrystal cellulose in the flotation of complex sulphide ores

Raquel Lopez et al.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2019)

Add to Collection

Review Chemistry, Multidisciplinary

Critical Review on Sustainable Homogeneous Cellulose Modification: Why Renewability Is Not Enough

Kelechukwu N. Onwukamike et al.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2019)

Add to Collection

Article Chemistry, Physical

Meaningful contact angles in flotation systems: critical analysis and recommendations

Jaroslaw W. Drelich et al.

SURFACE INNOVATIONS (2018)

Add to Collection

Article Chemistry, Applied

Effects of amine loading on the properties of cellulose nanofibrils aerogel and its CO2 capturing performance

Yu Wu et al.

CARBOHYDRATE POLYMERS (2018)

Add to Collection

Article Materials Science, Paper & Wood

Facile fabrication of thiol-modified cellulose sponges for adsorption of Hg2+ from aqueous solutions

Liduo Rong et al.

CELLULOSE (2018)

Add to Collection

Article Engineering, Chemical

Cellulose-mineral interactions based on the DLVO theory and their correlation with flotability

R. Hartmann et al.

MINERALS ENGINEERING (2018)

Add to Collection

Article Engineering, Chemical

Structural Modification of Xanthate Collectors To Enhance the Flotation Selectivity of Chalcopyrite

Xin Ma et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2017)

Add to Collection

Article Chemistry, Physical

Functionalization of cellulose nanocrystals for advanced applications

Juntao Tang et al.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2017)

Add to Collection

Review Polymer Science

Cellulose modification and shaping - a review

Kerstin Jedvert et al.

JOURNAL OF POLYMER ENGINEERING (2017)

Add to Collection

Article Engineering, Chemical

The action of cellulose-based and conventional flotation reagents under dry and wet conditions correlating inverse gas chromatography to microflotation studies

R. Hartmann et al.

MINERALS ENGINEERING (2017)

Add to Collection

Review Engineering, Chemical

Evaluation of the replacement of NaCN with depressant mixtures in the separation of copper-molybdenum sulphide ore by flotation

Zhigang Yin et al.

SEPARATION AND PURIFICATION TECHNOLOGY (2017)

Add to Collection

Article Engineering, Chemical

Utilization of acetic acid-[(hydrazinylthioxomethyl)thiol-sodium as a novel selective depressant for chalcopyrite in the flotation separation of molybdenite

Zhigang Yin et al.

SEPARATION AND PURIFICATION TECHNOLOGY (2017)

Add to Collection

Article Materials Science, Paper & Wood

Sustainable stabilization of oil in water emulsions by cellulose nanocrystals synthesized from deep eutectic solvents

Ossi Laitinen et al.

CELLULOSE (2017)

Add to Collection

Article Chemistry, Physical

Interactions between aminated cellulose nanocrystals and quartz: Adsorption and wettability studies

Robert Hartmann et al.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2016)

Add to Collection

Article Engineering, Chemical

The depression of pyrite in selective flotation by different reagent systems - A Literature review

Yufan Mu et al.

MINERALS ENGINEERING (2016)

Add to Collection

Review Agricultural Engineering

Current scenario of chalcopyrite bioleaching: A review on the recent advances to its heap-leach technology

Sandeep Panda et al.

BIORESOURCE TECHNOLOGY (2015)

Add to Collection

Article Metallurgy & Metallurgical Engineering

Selective depression effect in flotation separation of copper-molybdenum sulfides using 2,3-disulfanylbutanedioic acid

Ming-yang Li et al.

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA (2015)

Add to Collection

Review Chemistry, Physical

Nanofibrillated cellulose: surface modification and potential applications

Susheel Kalia et al.

COLLOID AND POLYMER SCIENCE (2014)

Add to Collection

Article Metallurgy & Metallurgical Engineering

Depression effect of pseudo glycolythiourea acid in flotation separation of copper-molybdenum

Jian-hua Chen et al.

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA (2013)

Add to Collection

Review Polymer Science

Cellulose-Based Bio- and Nanocomposites: A Review

Susheel Kalia et al.

INTERNATIONAL JOURNAL OF POLYMER SCIENCE (2011)

Add to Collection

Article Chemistry, Physical

Kinetics of hydrolysis and self condensation reactions of silanes by NMR spectroscopy

Marie-Christine Brochier Salon et al.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2008)

Add to Collection

Article Polymer Science

Adsorption of silane onto cellulose fibers. II. The effect of pH on silane hydrolysis, condensation, and adsorption behavior

Ramzi Bel-Hassen et al.

JOURNAL OF APPLIED POLYMER SCIENCE (2008)

Add to Collection

Article Engineering, Chemical

Current understanding of the mechanism of polysaccharide adsorption at the mineral/aqueous solution interface

J. S. Laskowski et al.

INTERNATIONAL JOURNAL OF MINERAL PROCESSING (2007)

Add to Collection

Article Chemistry, Multidisciplinary

Studies of interactions between silane coupling agents and cellulose fibers with liquid and solid-state NMR

Marie-Christine B. Salon et al.

MAGNETIC RESONANCE IN CHEMISTRY (2007)

Add to Collection

Article Engineering, Chemical

Floatability of chalcopyrite and molybdenite in the presence of lignosulfonates. Part II. Hallimond tube flotation

Anita Ansari et al.

MINERALS ENGINEERING (2007)

Add to Collection

Article Chemistry, Physical

Silane adsorption onto cellulose fibers: Hydrolysis and condensation reactions

MCB Salon et al.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2005)

Add to Collection

Article Engineering, Chemical

An overview of the use of chemical reagents in mineral processing

MJ Pearse

MINERALS ENGINEERING (2005)

Add to Collection

Article Engineering, Chemical

Flotation separation of carbonate from sulfide minerals, II: mechanisms of flotation depression of sulfide minerals by thioglycollic acid and citric acid

Y Liu et al.

MINERALS ENGINEERING (2004)

Add to Collection

Article Chemistry, Multidisciplinary

Interaction of silane coupling agents with cellulose

M Abdelmouleh et al.

LANGMUIR (2002)

Add to Collection

© Peeref 2019-2024. All rights reserved.