http://hywr.kuciv.kyoto-u.ac.jp/lecture/gss/SBabel/E3-20130118PM/Hazardous%20material_2003.pdf

Low-cost adsorbents for heavy metals uptake from contaminated water: a review.

Activated carbons and low cost adsorbents for remediation of tri- and hexavalent chromium from water.

Heavy metal removal from aqueous solution by advanced carbon nanotubes: Critical review of adsorption applications

Waste materials for activated carbon preparation and its use in aqueous-phase treatment: a review.

A review on surface modification of activated carbon for carbon dioxide adsorption

Adsorption of chromium by activated carbon from aqueous solution

Removal of copper from aqueous solutions by adsorption on activated carbons

Multi-walled carbon nanotubes–polycarbonate composites (MWCNT–PC) were prepared by a two-step method of solvent casting followed by compression molding and their dynamic impact strength was studied. Split Hopkinson Pressure Bar (SHPB) was deployed as the instrument for impact testing of the composite samples. The impact tests were performed under varying strain rates ranging from 1096 to 4017/s. The present studies report the stress–strain behavior of MWCNT–PC composites under a high strain rate of 2000–2600/s. A comparison of stress at various strains ranging from 5% to 20% was done by varying MWCNT concentration in the range 0.1, 0.5, 1, 2 and 5 wt.% in PC. Stress tolerance of these composites was studied to analyze effectiveness of small amounts of carbon nanotubes (CNTs) for impact/stress absorption in comparison to pure PC samples. It was found that the stress behavior for specific strains varies with concentration of CNTs in polycarbonate. At very low (about 0.1 wt.%) and high concentrations (about 5 wt.%) of carbon nanotubes the stress did not vary much as compared to pure PC for the above mentioned strain range. At concentration levels of 0.5, 1 and 2 wt.% CNTs, the impact absorption (nearly 105 MPa) increased by 10–20% as compared to pure PC (nearly 90 MPa) depending upon the amount of strain in the samples. The role of functionalized CNTs in impact studies was also studied by using 0.5 wt.% and 2 wt.% functionalized MWCNT. The use of functionalized CNTs was found to result in reduced impact absorption (nearly 95 MPa) as compared to as-synthesized CNTs (nearly 105 MPa). The effect of concentration of CNTs on impact strength of MWCNT–PC composites was analyzed by studying the SEM images of composite samples after impact.

High strain rate behavior of multi-walled carbon nanotubes-polycarbonate composites

Fabrication of nanoparticles by using Green synthesis is done because of its wide applications in different field such as biomedical, agriculture and food engineering. In this paper plant extract is used that contain alkaloids, flavonoids, saponins, steroid compounds, acts as reducing and stabilizing agents. The presence of AgNPs in solution was identified by UV-visible spectrophotometer. The size of AgNPs was in the range of 40-98 nm determined by Zetasizer. Spherical Shape and crystalline nature of AgNPs was confirmed by FESEM and XRD. Process Optimization was done by varying leaf extract volume, silver nitrate concentrations, pH, temperature, and time of reaction. The biosynthesized AgNPs exhibited antibacterial and catalytic activity against bacterial strains E. coli and V. cholera, and heavy metal such as Cadmium (Cd) and Palladium (Pd) in varying extents. Biosynthesized AgNPs were found to have a higher inhibitory action against E. coli and removal efficiency of Cd is higher than Pd.

/pdf/rapid-green-synthesis-of-silver-nanoparticles-agnps-using-5126skg8fk.pdf

Meenakshi Goyal

Papers

Adsorption of chromium by activated carbon from aqueous solution

Removal of copper from aqueous solutions by adsorption on activated carbons

High strain rate behavior of multi-walled carbon nanotubes-polycarbonate composites

Rapid Green Synthesis of Silver Nanoparticles (AgNPs) Using (Prunuspersica) Plants extract: Exploring its Antimicrobial and Catalytic Activities

Removal of mercury from water by fixed bed activated carbon columns.