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Search Results: 1 - 10 of 325265 matches for " Manonmani S "
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Uptake of Cationic Dyes from Aqueous Solution by Biosorption Using Granulized Annona squmosa Seed
T. Santhi,S. Manonmani
Journal of Chemistry , 2009, DOI: 10.1155/2009/472703
Abstract:
Removal of Methylene blue from aqueous solution by bioadsorption onto Ricinus communis epicarp Activated Carbon
T Santhi,S Manonmani
Chemical Engineering Research Bulletin , 2009,
Abstract: Carbon prepared from the epicarp of Ricinus communis was used to remove a textile dye (methylene blue (MB)) from an aqueous solution by adsorption technique under varying conditions of agitation time, dye concentration, adsorbent dose and pH. Adsorption depended on solution pH, dye concentration, carbon concentration and contact time. Adsorption followed both Langmuir and Freundlich isotherm models. The adsorption capacity was found to be 62.5mg/g at a neutral pH of 7 for the particle size of 125-250 μm at room temperature (32±2°C). The kinetics of adsorption of MB obeys Pseudo-first order. The results in this study indicated that activated carbon from Ricinus communis was an attractive candidate for removing cationic dyes from the dye wastewater.
Design of Soft Computing Based Optimal PI Controller for Greenhouse System  [PDF]
A. Manonmani, T. Thyagarajan, S. Sutha, V. Gayathri
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.711292
Abstract: Greenhouse system (GHS) is the worldwide fastest growing phenomenon in agricultural sector. Greenhouse models are essential for improving control efficiencies. The Relative Gain Analysis (RGA) reveals that the GHS control is complex due to 1) high nonlinear interactions between the biological subsystem and the physical subsystem and 2) strong coupling between the process variables such as temperature and humidity. In this paper, a decoupled linear cooling model has been developed using a feedback-feed forward linearization technique. Further, based on the model developed Internal Model Control (IMC) based Proportional Integrator (PI) controller parameters are optimized using Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) to achieve minimum Integral Square Error (ISE). The closed loop control is carried out using the above control schemes for set-point change and disturbance rejection. Finally, closed loop servo and servo-regulatory responses of GHS are compared quantitatively as well as qualitatively. The results implicate that IMC based PI controller using PSO provides better performance than the IMC based PI controller using GA. Also, it is observed that the disturbance introduced in one loop will not affect the other loop due to feedback-feed forward linearization and decoupling. Such a control scheme used for GHS would result in better yield in production of crops such as tomato, lettuce and broccoli.
Equilibrium and Kinetics Study of Adsorption of Crystal Violet onto the Peel of Cucumis sativa Fruit from Aqueous Solution
T. Smitha,S. Thirumalisamy,S. Manonmani
Journal of Chemistry , 2012, DOI: 10.1155/2012/457632
Abstract: The use of low-cost, locally available, high efficiency and eco-friendly adsorbents has been investigated as an ideal alternative to the current expensive methods of removing dyes from wastewater. This study investigates the potential use of the peel of Cucumis sativa fruit for the removal of crystal violet (CV) dye from simulated wastewater. The effects of different system variables, adsorbent dosage, initial dye concentration, pH and contact time were investigated and optimal experimental conditions were ascertained. The results showed that as the amount of the adsorbent increased, the percentage of dye removal increased accordingly. Optimum pH value for dye adsorption was determined as 7.0. The adsorption of crystal violet followed pseudo-second order rate equation and fit well Langmuir and Freundlich equations. The maximum removal of CV was obtained at pH 7 as 92.15% for adsorbent dose of 0.2 g/50 mL and 25 mg L-1 initial dye concentration at room temperature. The maximum adsorption capacity obtained from Langmuir equation was 34.24 mg g-1. Furthermore, adsorption kinetics of (CV) was studied and the rate of adsorption was found to conform to pseudo-second order kinetics with a good correlation (R2 > 0.9739). The peel of Cucumis sativa fruit can be attractive options for dye removal from diluted industrial effluents since test reaction made on simulated dyeing wastewater show better removal percentage of (CV).
Uptake of Cationic Dyes from Aqueous Solution by Biosorption onto Granular Muntingia calabura
T. Santhi,S. Manonmani,S. Ravi
Journal of Chemistry , 2009, DOI: 10.1155/2009/927406
Abstract:
Removal of malachite green from aqueous solution by activated carbon prepared from the Annona squmosa seed by adsorption
T. Santhi,S. Manonmani,T. Smith
Orbital : the Electronic Journal of Chemistry , 2010,
Abstract: The use of low -cost, locally available, highly efficient and eco-friendly adsorbents has been investigated as an ideal alternative to the current expensive methods of removing dyes from wastewater. This study investigates the potential use of activated carbon prepared from the Annona squmosa seed for the removal of malachite green (MG) dye from simulated wastewater. The effects of different system variables, adsorbent dosage, initial dye concentration, pH and contact time were investigated and optimal experimental conditions were ascertained. The results showed that as the amount of the adsorbent is increased, the percentage of dye removal increase accordingly. Optimum pH value for dye adsorption was 7.0. Maximum dye was sequestered within 50 min from the start of every experiment. The adsorption of malachite green followed the pseudo-second –order rate equation and fits the Langmuir, Freundlich, Dubinin-Radushekevich (D-R) and Tempkin equations well. The maximum removal of MG was obtained at pH 7 as 86.11% for adsorbent dose of 0.2 g/ 50 mL and 25 mg L -1 initial dye concentration at room temperature. Furthermore, adsorption kinetics of MG was studied and the rate of adsorption was found to conform to pseudo-second –order kinetics with a good correlation (R2 > 0.99) with intraparticle diffusion as one of the rate determining steps. Activated carbon developed from the Annona squmosa seed can be an attractive option for dye removal from diluted industrial effluents since test reaction made on simulated dyeing wastewater showed better removal percentage of MG.
Kinetics And Isotherm Studies On Cationic Dyes Adsorption Onto Annona Squmosa Seed Activated Carbon
T. Santhi,S. Manonmani,T.Smitha
International Journal of Engineering Science and Technology , 2010,
Abstract: The use of low - cost, locally available and eco-friendly adsorbents has been investigated as an ideal alternative to the current expensive methods of removing dyes from wastewater. This study investigates the potential use of activated carbon prepared from the Annona squmosa seed for the removal of methylene blue (MB) , methyl red (MR) and malachite green (MG) dyes from simulated wastewater. Adsorption of MB, MR and MG dyes on the Annona squmosa seed showed highest values at around pH 7.0, and followed second –order kinetic with intraparticle diffusion as one of the rate determining steps. The adsorption-equilibrium was represented with Langmuir, Freundlich, Dubinin-Radushekevich and Tempkin isotherms. Activated carbon developed from the Annona squmosa seed can be an attractive option for dyes removal from diluted industrial effluents.
Removal of methyl red from aqueous solution by activated carbon prepared from the Annona squmosa seed by adsorption
T Santhi,S. Manonmani,T. Smitha
Chemical Engineering Research Bulletin , 2010, DOI: 10.3329/cerb.v14i1.3767
Abstract: The use of low-cost, locally available, highly efficiencient and eco-friendly adsorbents has been investigated as an ideal alternative to the current expensive methods of removing dyes from wastewater. This study investigates the potential use of activated carbon prepared from the Annona squmosaseed for the removal of methyl red (MR) dye from simulated wastewater. The effects of different system variables, adsorbent dosage, initial dye concentration, pH and contact time were investigated and optimal experimental conditions were ascertained. The results showed that as the amount of the adsorbent increased, the percentage of dye removal increased accordingly. Optimum pH value for dye adsorption was 7.0. Maximum dye was sequestered within 50 min of the start of every experiment. The adsorption of methylene blue followed the pseudo-second –order rate equation and fits the Langmuir, Freundlich, Dubinin-Radushekevich (D-R) and Tempkin equations well. The maximum removal of MR was obtained at pH 7 as 82.81% for adsorbent dose of 0.2 g/ 50 mL and 25 mg L -1 initial dye concentration at room temperature. Furthermore, adsorption kinetics of MR was studied and the rate of adsorption was found to conform to pseudo-second –order kinetics with a good correlation (R2 > 0.99) with intraparticle diffusion as one of the rate determining steps. Activated carbon developed from the Annona squmosa seed can be an attractive option for dye removal from diluted industrial effluents since test reaction made on simulated dyeing wastewater showed better removal percentage of MR. Keywords: Annona squmosa, Adsorption, Wastewater, Methyl red, Kinetics, Activated carbon DOI = 10.3329/cerb.v14i1.3767 Chemical Engineering Research Bulletin 14 (2010) 11-18
A Study of Serum Magnesium Level in Type 2 Diabetes Mellitus Patients  [PDF]
M. Manonmani, K. Manimekalai
Journal of Diabetes Mellitus (JDM) , 2018, DOI: 10.4236/jdm.2018.82003
Abstract: Background: Type 2 Diabetes Mellitus (DM) is characterized by insulin resistance in peripheral tissues together with impaired secretion of insulin. DM is the most common metabolic disorder with magnesium deficiency, having 25% to 39% prevalence. Osmotic diuresis accounts for a portion of the magnesium loss. Plasma magnesium and intracellular magnesium concentrations are tightly regulated by several factors. Insulin is the most important factor. Insulin may modulate the shift of magnesium from extracellular to intracellular space. In the present study we try to estimate serum magnesium in type 2 DM and also to find the association with duration of T2DM. Materials and Methods: The study will be conducted in Thanjavur Medical College, Thanjavur. 25 diabetes patients and 25 healthy volunteers were included in the present study. Age group of the study subjects were between 35 and 67 years. Approximately 3 ml of fasting serum samples and 1 ml of whole blood samples will be collected in Clinical Chemistry laboratory for the estimation of fasting glucose (GOD-POD method), 2-hour post glucose levels and HbA1c (HPLC method), Lipids profile was estimated by IFCC approved clinical chemistry analyzer (fully automated). Results: There was statistically significant difference in BMI, fasting blood sugar (FBS), Post Prandial Blood Sugar (PPBS), lipid profile and Mg (in DM groups). HbA1c (P < 0.001) levels were statistically significance with DM patients. Serum Mg levels were correlated showed negative correlation except High Density Lipoprotein (HDL) had positive correlation. The Serum Mg levels are significantly decreased along with the duration of the diabetes. Conclusion: Hypomagnesemia is seen in type 2 DM and inverse correlation with duration of the diabetes also. Supplementation of Magnesium can prevent chronic complications related to diabetes mellitus.
CORH 3 - A Short Duration Non aromatic rice hybrid
Thiyagarajan K,Manonmani S,Robin S,Mohana Sundaram K
Electronic Journal of Plant Breeding , 2009,
Abstract: The new early maturing rice hybrid CORH 3 is a combination of TNAU CMS 2A and CB 87R. This hybrid matures in 115days. The hybrid was found to produce on an average 7.2 tonnes per hectare which was more than 12% higher than thehybrid checks, ADTRH 1 and KRH2, and more than 25% higher than the variety checks, ADT 43 and ADT 39. The hybridproduces good quality rice possessing intermediate amylose, soft gel consistency, and good linear elongation on cooking. Ithas white, non-sticky, non-aromatic rice which tastes good and has been well accepted by the consumers. Besides, the hybridCORH3 is tolerant to Rice Tungro Disease (RTD) and blast. It is also resistant to Green Leaf Hopper (GLH) and tolerant toBrown Plant Hopper (BPH) and White Backed Plant Hopper (WBPH)
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