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Sivanesan, S.
- The Removal of Copper Ions from Aqueous Solution Using Phosphoric Acid Modified β- Zeolites
Abstract Views :571 |
PDF Views:197
Authors
P. Panneerselvam
1,
V. Sathya Selva Bala
1,
K. V. Thiruvengadaravi
2,
J. Nandagopal
2,
M. Palanichamy
3,
S. Sivanesan
3
Affiliations
1 Environmental Management Lab., Dept. of Chemical Engg., Anna University, Chennai 600 025, IN
2 Department of Chemistry, Velammal Engineering College, Chennai-66, IN
3 Department of Chemistry, Anna University, Chennai-25, IN
1 Environmental Management Lab., Dept. of Chemical Engg., Anna University, Chennai 600 025, IN
2 Department of Chemistry, Velammal Engineering College, Chennai-66, IN
3 Department of Chemistry, Anna University, Chennai-25, IN
Source
Indian Journal of Science and Technology, Vol 2, No 2 (2009), Pagination: 63-66Abstract
An attempt was made to modify zeolite so as to find use as ion-exchange material for the removal of copper ion from industrial wastewaters. Large pore Hβ zeolite was initially modified with phosphoric acid and further treated with aqueous NaHCO3 solution to obtain the PNa2-β. The prepared PNa2- β was characterized by XRD, BET Surface area, SEM and AAS techniques. The sorptive removal of copper ion from aqueous solutions using modified - β zeolites was investigated. The PNa2- β zeolite showed higher sorption capacity than Na- β zeolite. It is because of the exchangeable Na+ ions being doubled in the PNa2- β compared to the Na- β zeolite. Equilibrium data were fitted to linear Langmuir and Freundlich models while the kinetic data were represented by pseudo-first order and pseudosecond order kinetic models.Keywords
Metal Removal, Modified Zeolites, Ion Exchange, Kinetics, IsothermsFull Text
References
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- A Study on Expulsion of Cadmium (II) and Chromium (III) from Electroplating Effluent
Abstract Views :552 |
PDF Views:100
Authors
V. Sathyaselvabala
1,
P. Panneerselvam
1,
R. Arulmozhli
1,
K. V. Thiruvengadaravi
2,
N. Thinakaran
3,
S. Sivanesan
1
Affiliations
1 Environmental Management Lab., Dept. of Chemical Engineering, A.C. Tech., Anna University, Chennai-60 025, IN
2 Dept. of Chemistry, Velammal College of Engineering, Chennai- 600 066, IN
3 Department of Chemistry, Alagappa Govt. Arts College, Karaikudi- 630 001, Tamilnadu, IN
1 Environmental Management Lab., Dept. of Chemical Engineering, A.C. Tech., Anna University, Chennai-60 025, IN
2 Dept. of Chemistry, Velammal College of Engineering, Chennai- 600 066, IN
3 Department of Chemistry, Alagappa Govt. Arts College, Karaikudi- 630 001, Tamilnadu, IN
Source
Indian Journal of Science and Technology, Vol 2, No 11 (2009), Pagination: 27-31Abstract
Chromium and cadmium are toxic heavy metals present in wastewater from electroplating industries. The removal of Cd (II) and Cr (III) by Amberjet, IR 1200, a synthetic ion exchange resin has been studied. The resin was prepared into two cationic forms H+ and Na+. The optimum conditions were concentration, pH, stirring time and resin amount. The exchange capacities, moisture content and optimum conditions of this resin were determined in a batch system. The stirring speed was 50 ppm during all the batch experiments. The initial and final chromium and cadmium amounts were determined using the atomic adsorption spectroscopy. The most preferable value of concentration is 10 mg/L; pH is 5.5, stirring time 30 min, amount of resin 200mg. The maximum removal and recovery for Cd (II) and Cr (III) was seen in Na+ form of resin.Keywords
Cadmium, Chromium, Heavy Metal, Water Contamination, Resin, Ion-exchange, Extraction, EffluentFull Text
References
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- Rengaraj S, Joo CK, Kim Y and Yi J (2003) Kinetics of removal of chromium from water and electronic process wastewater by ion exchange resins: 1200H, 1500H and IRN97H. J. Hazard. Mater. B102, 257-275.
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- Kinetic Study of the Esterification of Free Fatty Acids in Non-edible Pongamia Pinnata Oil Using Acid Catalyst
Abstract Views :417 |
PDF Views:216
Authors
K. V. Thiruvengadaravi
1,
J. Nandagopal
2,
V. Sathya Selva Bala
3,
S. Dinesh Kirupha
3,
P. Vijayalakshmi
3,
S. Sivanesan
3
Affiliations
1 Department of Chemistry, Velammal Engineering College, Chennai- 600 066, IN
2 Department of Chemistry, Velammal Engineering College, Chennai- 600 066
3 Department of Chemical Engineering, A.C. College of Technology, Anna University, Chennai- 600 025, IN
1 Department of Chemistry, Velammal Engineering College, Chennai- 600 066, IN
2 Department of Chemistry, Velammal Engineering College, Chennai- 600 066
3 Department of Chemical Engineering, A.C. College of Technology, Anna University, Chennai- 600 025, IN
Source
Indian Journal of Science and Technology, Vol 2, No 12 (2009), Pagination: 20-24Abstract
Pre treatment of high free fatty acid containing Pongamia pinnata oil using sulfuric acid catalyst has been optimized. The kinetics of the pre treatment esterification process was studied. The experimental results were found to fit a Pseudo first-order kinetics. The influence of temperature on the rate constants was determined by fitting the results to the Arrhenius equation. The activation energy and frequency factor were favorable for the forward reaction. Based on the experimental results, a methanol to oil ratio of 9:1, one percentage catalyst by weight, and a temperature of 60°C, were selected as the optimum settings for the esterification process.Keywords
Pongamia Pinnata Oil, Free Fatty Acid, Esterification, Acid Catalyst, KineticsFull Text
References
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- Effect of Sodium Fluoride on Serum Testosterone and Lipid Profiles in the Testis of Adult Albino Rats
Abstract Views :165 |
PDF Views:0
Authors
Affiliations
1 Department of Zoology, Bharathidasan Govt. College for Women, Pondicherry-605 003, IN
2 Department of Zoology, KM Centre for Post Graduate Studies, Pondicherry-605 008, IN
1 Department of Zoology, Bharathidasan Govt. College for Women, Pondicherry-605 003, IN
2 Department of Zoology, KM Centre for Post Graduate Studies, Pondicherry-605 008, IN
Source
Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 73-73Abstract
Effect of sodium fluoride at two different doses (10 mg and 20 mg/kg body weight, orally daily for 30 days) was seen on serum testosterone and lipid profiles in the testis of adult albino rats. Testosterone was significantly decreased in 20 mg treated animals and insignificantly decreased in 10 mg treated animals. All the lipid classes were markedly decreased in the testis of fluoride treated animals.
- Comparative Studies on Ethanol Production Efficiency usingZymomonas mobilis, Erwinia carotovora and Saccharomyces cerevisae
Abstract Views :162 |
PDF Views:0
Authors
Affiliations
1 Department of Applied Science and Technology, Anna University, Chennai, IN
1 Department of Applied Science and Technology, Anna University, Chennai, IN