scholarly journals CONSIDERATIONS ABOUT MODIFIED CELLULOSE NANOFIBERS (NFC) APPLICATIONS IN DEWATERING FINE MATERIAL FROM TAILING PONDS. STUDIES ON PHYSICAL MODELS

2016 ◽  
Author(s):  
Ioan Bud
Keyword(s):  
Cellulose Nanofibers ◽  
Physical Models ◽  
Fine Material ◽  
Tailing Ponds ◽  
Modified Cellulose

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

2021 ◽  
Author(s):  
Ana Luiza Coelho Braga de Carvalho ◽  
Feliciana Ludovici ◽  
Daniel Goldmann ◽  
André Carlos Silva ◽  
Henrikki Liimatainen
Keyword(s):  
Ultrafine Particles ◽  
Fine Particles ◽  
Cellulose Nanofibers ◽  
Aqueous Alkaline Medium ◽  
Selective Flocculation ◽  
Turbidity Removal ◽  
Floc Size ◽  
Mineral Particles ◽  
Tailing Ponds ◽  
Anionic Polyacrylamide

AbstractA considerable amount of very fine particles can be found, e.g., stored in tailing ponds, and they can include valuable or hazardous minerals that have the potential to be recovered. Selective flocculation, i.e., the formation of larger aggregates from specific minerals, offers a promising approach to improve the recovery of ultrafine particles. This study focuses on the use of a new bio-based flocculation agent made of silylated cellulose nanofibers containing a thiol-functional moiety (SiCNF). Flocculation was performed in separated systems of ultrafine mineral dispersions of pyrite, chalcopyrite, and quartz in aqueous alkaline medium. The flocculation performance of SiCNF was addressed in terms of the turbidity reduction of mineral dispersions and the floc size, and the results were compared with the performance of a commercial anionic polyacrylamide. SiCNF exhibited a turbidity removal efficiency of approximately 90%–99% at a concentration of 4000–8000 ppm with chalcopyrite and pyrite, whereas the turbidity removal of quartz suspension was significantly lower (a maximum of approximately 30%). The sulfide particles formed flocs with a size of several hundreds of micrometers. The quartz in turn did not form any visible flocs, and the dispersion still had a milky appearance after dosing 12,000 ppm of the flocculant. These results open a promising path for the investigation of SiCNF as a selective flocculation agent for sulfide minerals. Graphical Abstract

scholarly journals Virus and chlorine adsorption onto guanidine modified cellulose nanofibers using covalent and hydrogen bonding

2020 ◽  
Vol 498 ◽  
pp. 108153
Author(s):  
Xue Mi ◽  
Soha M. Albukhari ◽  
Caryn L. Heldt ◽  
Patricia A. Heiden
Keyword(s):  
Hydrogen Bonding ◽  
Cellulose Nanofibers ◽  
Chlorine Adsorption ◽  
Modified Cellulose

scholarly journals High-Performance Styrene-Butadiene Rubber Nanocomposites Reinforced by Surface-Modified Cellulose Nanofibers

ACS Omega ◽  
2019 ◽  
Vol 4 (8) ◽  
pp. 13189-13199 ◽  
Author(s):  
Alex Sinclair ◽  
Xiaoyi Zhou ◽  
Siwakorn Tangpong ◽  
Dilpreet S. Bajwa ◽  
Mohiuddin Quadir ◽  
...  
Keyword(s):  
High Performance ◽  
Cellulose Nanofibers ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Nanocomposites ◽  
Surface Modified ◽  
Styrene Butadiene ◽  
Modified Cellulose

Surface-Modified Cellulose Nanofibers-graft-poly(lactic acid)s Made by Ring-Opening Polymerization of l-Lactide

2019 ◽  
Vol 27 (4) ◽  
pp. 847-861 ◽  
Author(s):  
Chaniga Chuensangjun ◽  
Kyohei Kanomata ◽  
Takuya Kitaoka ◽  
Yusuf Chisti ◽  
Sarote Sirisansaneeyakul
Keyword(s):  
Lactic Acid ◽  
Ring Opening ◽  
Cellulose Nanofibers ◽  
Ring Opening Polymerization ◽  
Poly Lactic Acid ◽  
Surface Modified ◽  
Modified Cellulose

Stiffened Nanocomposite Hydrogels by Using Modified Cellulose Nanofibers via Plug Flow Reactor Method

2019 ◽  
Vol 7 (10) ◽  
pp. 9092-9096 ◽  
Author(s):  
Xianpeng Yang ◽  
Subir K. Biswas ◽  
Hiroyuki Yano ◽  
Kentaro Abe
Keyword(s):  
Flow Reactor ◽  
Cellulose Nanofibers ◽  
Plug Flow ◽  
Plug Flow Reactor ◽  
Nanocomposite Hydrogels ◽  
Modified Cellulose

scholarly journals Preparation and characterization of modified cellulose nanofibers reinforced polylactic acid nanocomposite

2014 ◽  
Vol 35 ◽  
pp. 73-79 ◽  
Author(s):  
Ali Abdulkhani ◽  
Jaber Hosseinzadeh ◽  
Alireza Ashori ◽  
Saeed Dadashi ◽  
Zahra Takzare
Keyword(s):  
Polylactic Acid ◽  
Cellulose Nanofibers ◽  
Modified Cellulose

Dialdehyde modified cellulose nanofibers enhanced the physical properties of decorative paper impregnated by aldehyde-free adhesive

2020 ◽  
Vol 250 ◽  
pp. 116941
Author(s):  
Jianfeng Xu ◽  
Xiaoyan Li ◽  
Ru Liu ◽  
Zhen Shang ◽  
Ling Long ◽  
...  
Keyword(s):  
Physical Properties ◽  
Cellulose Nanofibers ◽  
Modified Cellulose

Sustained release insect repellent microcapsules using modified cellulose nanofibers (mCNF) as pickering emulsifier

2019 ◽  
Vol 582 ◽  
pp. 123883 ◽  
Author(s):  
Sandip L. Kadam ◽  
Prashant Yadav ◽  
Siddhant Bhutkar ◽  
Vishal D. Patil ◽  
Parshuram G. Shukla ◽  
...  
Keyword(s):  
Sustained Release ◽  
Cellulose Nanofibers ◽  
Insect Repellent ◽  
Modified Cellulose
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