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Purushothaman, V.
- Investigation of the Biosorption Mechanisms of Methylene Blue onto Press Mud through Kinetic Modeling Analysis
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PDF Views:159
Authors
Affiliations
1 School of Chemical and Biotechnology, Sastra University, Thanjavur, IN
1 School of Chemical and Biotechnology, Sastra University, Thanjavur, IN
Source
Indian Journal of Science and Technology, Vol 3, No 1 (2010), Pagination: 44-47Abstract
This research deals with the highly available sugar industry waste material, press mud as low cost biosorbent for the removal of textile dyestuff from aqueous medium, and the investigation of the probably involved physiochemical mechanisms. Experiments were carried out in batch reactor. The results of equilibrium studies showed that equilibrium state was reached within 48 h of exposure time and maximum biosorption taken place at the biosorbent dosage of 30 mg/ml of solution. Secondly, several biosorption kinetic models were applied to fit the experimental data, namely Lagergren irreversible first-order, Reversible first-order, Pseudo-second-order, Elovich and intraparticle diffusion models. The proposed explanations were deduced from the theoretical assumptions behind the most appropriate model(s), which could satisfactorily describe the present biosorption phenomenon. The interpretation of the related results have shown that, with R2 of about 99%, the pseudo-second order model is the most suitable dynamic theory describing the biosorption of dye onto press mud predicting therefore a chemisorption process.Keywords
Biosorption, Press Mud, Dye, Kinetic ModelingFull Text
References
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- FDTD Computation of Sar Distributions in Human Head for Mobile Phones
Abstract Views :119 |
PDF Views:0
Authors
Affiliations
1 Veltech Engineering College, IN
1 Veltech Engineering College, IN
Source
International Journal of Scientific Engineering and Technology, Vol 2, No 11 (2013), Pagination: 1069-1073Abstract
The influence of radio frequency (RF) field orientation on specific absorption rate (SAR) in a human head is investigated in this paper. The amount of temperature raised in Human Head due to Mobile Phone usage with different frequency range is analyzed using a versatile electromagnetic field simulator based upon the Finite-Difference Time-Domain method (FDTD). The harmful effects of recent unbranded mobile phone is compared with the Branded Mobile Phones. This paper investigates the harmful effects of both Branded and Unbranded Mobile Phones for various frequency range and the result shows that the usage of Unbranded Mobile Phone will cause greater damage to brain cells when compared with Branded Mobile Phones.Keywords
Specific Absorption Rate (SAR), Mobile Phone, Finite-Difference Time Domain (FDTD).Full Text
- FDTD Computation of SAR Distributions in Human Head for Mobile Phones
Abstract Views :123 |
PDF Views:0
Authors
Affiliations
1 Veltech Engineering College, IN
1 Veltech Engineering College, IN
Source
International Journal of Scientific Engineering and Technology, Vol 2, No 10 (2013), Pagination: 986-990Abstract
The influence of radio frequency (RF) field orientation on specific absorption rate (SAR) in a human head is investigated in this paper. The amount of temperature raised in Human Head due to Mobile Phone usage with different frequency range is analyzed using a versatile electromagnetic field simulator based upon the Finite-Difference Time-Domain method (FDTD). The harmful effects of recent unbranded mobile phone is compared with the Branded Mobile Phones. This paper investigates the harmful effects of both Branded and Unbranded Mobile Phones for various frequency range and the result shows that the usage of Unbranded Mobile Phone will cause greater damage to brain cells when compared with Branded Mobile Phones.Keywords
Specific Absorption Rate (SAR), Mobile Phone, Finite-Difference Time Domain (FDTD).Full Text
- Removal of Nickel (II) and Zinc (II) present in the Electroplating Industry Wastewater by Bioaccumulation Method
Abstract Views :201 |
PDF Views:0
Authors
Affiliations
1 Department of Petrochemical Engineering, JCT College of Engineering and Technology, Pichanur. Coimbatore 641105, IN
2 Department of Chemical Engineering, A.C. College of Technology, Anna University, Chennai 600 025, IN
3 Department of Bio-Engineering, VELS Institute of Science, Technology and Advanced Studies (VISTAS), Pallavaram, Chennai 600117, IN
1 Department of Petrochemical Engineering, JCT College of Engineering and Technology, Pichanur. Coimbatore 641105, IN
2 Department of Chemical Engineering, A.C. College of Technology, Anna University, Chennai 600 025, IN
3 Department of Bio-Engineering, VELS Institute of Science, Technology and Advanced Studies (VISTAS), Pallavaram, Chennai 600117, IN
Source
Research Journal of Pharmacy and Technology, Vol 12, No 4 (2019), Pagination: 1495-1503Abstract
In the present work, the bioaccumulation study of electroplating industrial waste water using Micrococcus cascolyticus was carried out. The characteristics of the wastewater (pH, BOD, COD, TDS) were analyzed using standard method and it was found to be above permissible limit. The preliminary analysis for the bioaccumulation process was done by spread plate method and the concentration of the Nickel and Zinc was determined using standard method. After the bioaccumulation treatment, the aforesaid parameters were found to be below the permissible limit as prescribed by pollution control board. The removal percentage of Nickel and zinc present in the treated effluent was found to be 44.68 % and 48.76 % respectively. The maximum biomass for the Nickel and Zinc was found to be 5.8 g/l and 4.8 g/l respectively. For better bioaccumulation process, the parameters such as pH, Temperature, microbial volume, were optimized. The optimized temperature for the removal of Nickel and Zinc was found to be 50°C and 55°C respectively. Thus the Micrococcus cascolyticus has an ability to reduce the heavy metals concentration and other parameters (pH, BOD, COD, TDS) present in the waste water at the promising level.Keywords
Bioaccumulation, Micrococcus cascolyticus, Electroplating Industrial Effluents, Spread Plate Assay.
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