Removal of arsenic, nitrate and fluoride by PEES/Nano- Silver Hybrid Membranes

2021 ◽  
Vol 25 (9) ◽  
pp. 107-112
Author(s):  
P. Maheswari ◽  
S.G. Gunasekaran ◽  
Stephen L. Devaraj
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Phase Separation ◽  
Nitrate Removal ◽  
Hybrid Membranes ◽  
Thermal And Mechanical Properties ◽  
Nano Silver ◽  
Hazardous Metal ◽  
Removal Of Arsenic ◽  
High Rejection

In this present work, we have investigated the arsenic, fluoride and nitrate removal by the poly (ether-ether-sulfone) (PEES)/nano-silver hybrid membranes effectively prepared by the non solvent induced phase separation. The prepared membranes were characterized by thermal and mechanical properties to investigate the influence of nano-silver on the final properties of the membranes. Hence, our experimental study is based on arsenic (III) and arsenic (V) rejection studies attempted at different pH. The results of this study revealed the As (V) removal by NF with a high rejection of 99.98% compared to As (III). Fluoride and nitrate studies were carried out at neutral pH and it showed more than 80% rejection. Based on this investigation, it was concluded that the PEES/nano-silver membranes were effectively applicable to remove hazardous metal ions.

Properties and performances of fabrics made from bio-based and degradable polylactide acid/poly (hydroxybutyrate- co-hydroxyvalerate) (PLA/PHBV) filament yarns

2016 ◽  
Vol 87 (20) ◽  
pp. 2464-2474 ◽  
Author(s):  
XX Huang ◽  
XM Tao ◽  
ZH Zhang ◽  
P Chen
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Polyamide 6 ◽  
Air Permeability ◽  
Filament Yarn ◽  
Thermal And Mechanical Properties ◽  
Knitted Fabrics ◽  
Polylactide Acid ◽  
Finishing Processes ◽  
Single Jersey

This paper reports a comparative experimental study of single jersey knitted fabrics made from a novel bio-based and degradable polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) multi-filament yarn, together with polylactide acid , Cupro, polyethylene terephthalate (PET) and polyamide 6 (PA 6) multi-filament yarns. Their structures, mechanical, thermal and surface properties and performances as well as anti-bacterial behavior are measured and compared. It has been found that the polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) filament yarn has adequate thermal and mechanical properties for normal textile and coloration/finishing processes. The Young's modulus of polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) multi-filament yarn is the lowest among all the candidates investigated except for polyamide 6 (PA 6). The dyed polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) fabric has the highest softness rating among all the fabrics. Single jersey knitted fabrics from the polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) filament yarn have a bursting strength, extension and recovery that satisfy the industrial requirement. In addition, after fully relaxation, the dyed polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) knitted fabrics exhibit an outstanding pilling resistance, favorable snagging property, as well as good air permeability, Qmax and smoother surface. Finally, this study has led to a discovery of excellent anti-bacterial performance of 100% polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) fabrics against staphylococcus aureus, klebsiella pneumoniae, candida albicans according to AATCC100-2012.

Biochar as a filler in glassfiber reinforced composites: Experimental study of thermal and mechanical properties

2019 ◽  
Vol 175 ◽  
pp. 107169 ◽  
Author(s):  
Raj Kumar Dahal ◽  
Bishnu Acharya ◽  
Gobinda Saha ◽  
Rabin Bissessur ◽  
Animesh Dutta ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Reinforced Composites ◽  
Thermal And Mechanical Properties

Progress of the Study on Corrosion Behavior of Graphite in HTGRs

2010 ◽  
Author(s):  
Peng Wang ◽  
Xinli Yu ◽  
Suyuan Yu
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Oxidation Behavior ◽  
Normal Operation ◽  
Thermal And Mechanical Properties ◽  
Computational Simulations ◽  
Water Ingress ◽  
Graphite Oxidation ◽  
Air Ingress ◽  
High Temperature Gas

The graphite has been widely used as moderator and structure materials in high-temperature gas-cooled reactors (HTGRs). However the graphite can be corroded by such oxidizing impurities as O2, H2O and CO2 in the coolant, resulting in the degradation of its thermal and mechanical properties. In addition, in water ingress and air ingress accidents, the corrosion of graphite materials is more serious. In this paper, the recent researches, which include the experimental study and computational simulations, on the graphite oxidation behavior during normal operation, water ingress and air ingress accidents were reviewed. Some significant problems concerned in the graphite oxidation for further studying were also put forward.

Experimental study on the thermal and mechanical properties of MWCNT/polymer and Cu/polymer composites

2016 ◽  
Vol 107 ◽  
pp. 907-917 ◽  
Author(s):  
Hyeon Jeong Park ◽  
Arash Badakhsh ◽  
Ik Tae Im ◽  
Min-Soo Kim ◽  
Chan Woo Park
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Polymer Composites ◽  
Thermal And Mechanical Properties
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