Sodium hyroxyethylcellulose succinate: An efficient ion exchanger to remove Cd(II) from single and binary metal system

2017 ◽  
Vol 64 ◽  
pp. 189-197
Author(s):  
Muhammad Ajaz Hussain ◽  
Muhammad Ali Ali ◽  
Muhammad Imran Irfan ◽  
Rizwan Nasir Paracha
Keyword(s):  
Ion Exchanger ◽  
Metal System ◽  
Binary Metal ◽  
Binary Metal System

Preparation of a composite catalyst for the decomposition of N2O gas using ultrafine particle beams: Silver-cobalt monoxide binary metal system

1998 ◽  
Vol 173 (1) ◽  
pp. 37-45 ◽  
Author(s):  
Hirokazu Ichitsubo ◽  
Yukihiko Horiuchi ◽  
Kunio Uchida ◽  
Ellen Sekreta ◽  
Akihiro Gotoh ◽  
...  
Keyword(s):  
Ultrafine Particle ◽  
Composite Catalyst ◽  
Metal System ◽  
Particle Beams ◽  
Binary Metal ◽  
Binary Metal System

Adsorption of copper and lead in single and binary metal system onto Fumaria indica biomass

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Metal Ion ◽  
Metal Removal ◽  
Aqueous Media ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Metal System ◽  
Lead Adsorption ◽  
Binary Metal ◽  
Binary Metal System ◽  
Adsorption Data

Among heavy metals, lead and copper pose a significant threat to the due to their toxicity, incremental accumulation in the food chain and persistence in the ecosystem. Lead and copper are introduced into water from various industries and other human activities. Present study was aimed to remove lead and copper from aqueous media using Fumaria indica biomass as a function of metal ions initial concentration. Both metal removal was investigated in single and binary system. For comparison isotherm models i.e., Langmuir and Freundlich were applied on experimental adsorption data. Results showed that the copper behavior was different in single and binary metal system, whereas lead adsorption remained the same in both single and binary metal systems. The Freundlich isotherm model fitted well to the adsorption data of both single and binary metal system. The thermodynamic parameters i.e., ΔG0, was measured to get insight into adsorption phenomenon and negative value of ΔG0 suggest that the adsorption process was spontaneous in nature. Results showed that in multi-metal system the adsorption of specific metal ion may change and during metal adsorption from industrial wastewater this effect must be taken in account before generalization of results.

scholarly journals Simulated Biosorption of Cd(II) and Cu(II) in Single and Binary Metal Systems by Water Hyacinth (Eichhornia crassipes) using Aspen Adsorption

2017 ◽  
Vol 16 (2) ◽  
pp. 21 ◽  
Author(s):  
Adonis P. Adornado ◽  
Allan N. Soriano ◽  
Omar Nassif Orfiana ◽  
Mark Brandon J. Pangon ◽  
Aileen D. Nieva
Keyword(s):  
Heavy Metal ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Metal Uptake ◽  
Process Analysis ◽  
Fixed Bed ◽  
Breakthrough Curves ◽  
Competitive Sorption ◽  
Metal System ◽  
Binary Metal

Biosorption is becoming an attractive alternative for the removal of heavy metal from contaminated wastewaters since it offers low capital and operating costs. It has a great potential on heavy metal decontamination and the possibility of metal recovery. The study evaluated the performance of water hyacinth (Eichhornia crassipes) in a fixed bed column on sequestering heavy metals present in wastewaters. Column breakthrough curves at varying parameters were evaluated. The study used Aspen Adsorption® to simulate the biosorption process. Analysis of breakthrough curves for the single metal system shows that increasing both influent flow rate and initial metal concentration reduces the metal uptake of the column, while increasing bed height enhances the metal uptake of the column. Presence of both Cd(II) and Cu(II) in the system promotes competitive sorption processes. Analysis of the breakthrough curves for the binary metal system showed that copper ions adsorbed to the adsorbent are replaced by cadmium ions when the maximum capacity of the column is reached. This leads to the outlet concentration of Cu(II) exceeding its initial concentration. This phenomenon shows that Cd(II) has more affinity with E. crassipes than Cu(II).

Ion Beam Mixing of Ni-Ti Bilayered Thin Films

1985 ◽  
Vol 43 ◽  
pp. 290-291
Author(s):  
A. K. Rai ◽  
R. S. Bhattacharya ◽  
M. H. Rashid
Keyword(s):  
Crystal Structure ◽  
Thin Films ◽  
Amorphous Alloys ◽  
Ion Beam ◽  
Ion Bombardment ◽  
High Energy ◽  
Mixing Efficiency ◽  
Ion Beam Mixing ◽  
Enhanced Diffusion ◽  
Binary Metal

Ion beam mixing has recently been found to be an effective method of producing amorphous alloys in the binary metal systems where the two original constituent metals are of different crystal structure. The mechanism of ion beam mixing are not well understood yet. Several mechanisms have been proposed to account for the observed mixing phenomena. The first mechanism is enhanced diffusion due to defects created by the incoming ions. Second is the cascade mixing mechanism for which the kinematicel collisional models exist in the literature. Third mechanism is thermal spikes. In the present work we have studied the mixing efficiency and ion beam induced amorphisation of Ni-Ti system under high energy ion bombardment and the results are compared with collisional models. We have employed plan and x-sectional veiw TEM and RBS techniques in the present work.

Sign in / Sign up

Export Citation Format

Share Document