Sivamani Sivalingam
@rajalakshmi.org
Associate Professor, Chemical Engineering
Rajalakshmi Engineering College
EDUCATION
Ph.D Chemical Engineering
M.Tech Petroleum Refining and Petrochemical
B.Tech Chemical Engineering
RESEARCH, TEACHING, or OTHER INTERESTS
Multidisciplinary, Chemical Engineering, Catalysis, Renewable Energy, Sustainability and the Environment
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Sivamani Sivalingam and Sowmiya A.
Royal Society of Chemistry (RSC)
This study focuses on utilizing date seed biomass to produce activated carbon (AC) through chemical activation. The resulting AC is then employed for the removal of both rich contaminants of dye and heavy metal ions from wastewater.
Sivamani Sivalingam and Vijayaraghavan Gopal
Springer Science and Business Media LLC
Tanjore Ramachandran Sundararaman, , Sivamani Sivalingam, Melvin Millicent Mabel, Trisha Gobinath, , , and
Faculty of Environment and Resource Studies - Mahidol University
The present research employed immobilized Canna indica beads (CIBs) to obtain maximum degradation of highly toxic Reactive Blue Dye (RBD), predominantly used in textile industry. The CIBs were characterized using FTIR and SEM-EDX analysis. A batch adsorption study was conducted to measure the removal of harmful RBD dye. Different factors were examined in the biosorption technique to achieve the maximum level of toxic dye elimination, such as adsorbent-solute interaction time (5-120 min), solution pH (2-10), adsorbent dose (25 to 250 mg/100 mL), RBD concentration (50-250 mg/L), and temperature (30-60°C). Removal of 99.96% of RBD was successfully achieved at the optimum pH 7, RBD concentration of 50 mg/L, adsorbent dosage of 150 mg/100 mL, a temperature of 303 K, and 60 min of interaction time. The Langmuir isotherm and pseudo-second-order (PSO) kinetic model data have been found to be an ideal match compared to the Freundlich isotherm and pseudo-first-order (PFO) kinetic model. The maximum adsorption capacity onto CIBs biosorbent was found to be 70.49 mg/g. It was noticed that the chemical reaction occurred naturally and released heat during the process which denoted an exothermic reaction. These results shown that the adsorption of RBD removal is efficient using prepared adsorbent from Canna indica root tubers. Therefore, these CIBs could be used for other toxic dyes and heavy metals from industrial wastewater.
Sivamani Sivalingam
CSIR-National Institute of Science Communication and Policy Research (NIScPR)
The present research work entails the process simulation of biodiesel production on a large scale using the ASPEN process simulator. Catalytic transesterification and non-catalytic supercritical mode of transesterification are simulated with experimental results and compared to determine the efficient mode of transesterification under different initial feedstock raw material conditions. It is found that the supercritical method (280 ℃ ; 276.4 atm; 42:1 for alcohol and oil ratio) is efficient in terms of cost and product quality for the feedstocks with high Free Fatty Acid (FFA) content. For feedstocks with a negligible amount of FFA, alkali-catalyzed homogeneous transesterification (60-65 ℃ ; 4atm; 6:1-alcohol: oil ratio) is efficient in terms of product quality and yield although the cost is similar to that of the supercritical mode of transesterification. Pre-treatment steps like simple esterification and glycerolysis for high FFA-contained feedstocks are studied using the ASPEN simulation to understand better the overall process by which the pre-treatment is carried out. Finally, the combustion characteristics of the biodiesel blend along with n-heptane (a surrogate for Petro-diesel) are studied using the Python scripted Cantera combustion chamber and it is found that the amount of soot and carbon monoxide emission is very less indicating complete and efficient combustion. This simulation study is carried out with the help of DWSIM simulation software.
J. Leonard, Sivamani Sivalingam, Rejeti Venkata Srinadh, and Susmita Mishra
Elsevier BV
Sivamani Sivalingam, , Vijayaraghavan Gopal, and
Faculty of Environment and Resource Studies - Mahidol University
In the present study, extracted algal alginate from red algae as natural coagulant was used for removal of textile dye congo red (CR) from water. In developing countries like India, only about 10% of the wastewater being generated is treated, whereas the remaining 90% is discharged into the water bodies as it stands. Color and turbidity are the most common problems in the disposal of wastewater. The removal of color is one of the key challenges in wastewater treatment. For the coagulation process, the synthetic textile wastewater samples had CR concentrations of 50, 100, 150, 200, and 250 mg/L and varying initial pH of 4, 5, and 6. Different dosages of calcium and alginate (1, 2, 3, 4, 5, and 6 g/L) were used to perform the experiments. The obtained results exhibited that the effectiveness of color removal was higher at lower pH 4, and the calcium and alginate dosages are dependent on the CR concentration of the synthetic textile wastewater. These investigations demonstrating the higher efficiency of calcium alginate as a coagulant, where maximum color removal achieved over 95.05%. Increasing alginate dosages and residence times can enhance the performance of coagulation. Dye color is often present in real wastewater and needs to be removed before being reused or discharged to the environment.
Vijayaraghavan Gopal, Dharani Dharan Dharmarajan, and Sivamani Sivalingam
Technoscience Publications
Carboxymethyl cellulose (CMC) extraction from Musa paradisiaca (MP) pseudo stem by alkaline treatment and their properties were examined in the current research work. One of the most well-known types of lignin biomass waste that is readily available globally is MP. In many nations, including Taiwan, Sri Lanka, the Philippines, India, and the Philippines, these plants have been used for traditional reasons. Whole plant parts have been used as food, including the pseudo-stem, flower buds, trunk, fruits, and leaves. Sequestration of cellulose was attained by alkaline treatment and bleaching from raw fibers. Cellulose fiber is a biodegradable, naturally occurring, and renewable polymer that is used in a variety of industries, including the food, paper, cosmetic, and pharmaceutical sectors. The cellulose obtained from forest and agricultural residue has numerous advantages such as being environmentally safe, recyclable, and economically feasible respectively. The main process of cellulose extraction from MP pseudo stem are digesting process using a digester, bleaching, and neutralization which shows a zero-waste process. The alkali treatment takes less time to get a final product whereas enzyme treatment, and steam explosion treatment takes high energy and more cost. Hence, cellulose extract from alkaline treatment is economically feasible and environmentally friendly.
Sivamani Sivalingam and Sujit Sen
Elsevier BV
Sivamani Sivalingam and Sujit Sen
Springer Science and Business Media LLC
Sivamani Sivalingam and Sujit Sen
American Chemical Society (ACS)
Sono-assisted adsorption process is a clean, resourceful and rapid method for elimination of toxic species from water. Mesoporous zeolite Y (NaY) was synthesized from rice husk ash (RHA), using a three-step technique and then modified with iron using an ion-exchange method. As-synthesized NaY, iron-modified zeolite Y (IMZY), and commercial zeolite Y (CZY) were characterized by X-ray fluorescence (XRF) spectroscopy, X-ray diffraction (XRD) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM) equipped with an energy-dispersive X-ray spectroscopy (EDX), and Brunauer–Emmett–Teller (BET) analysis. The EDX analysis implies the presence of iron in the structure of NaY. The swift sono-assisted adsorption of As(V) from aqueous solution was compared with conventional adsorption in the presence of all three adsorbents: NaY, IMZY, and CZY. The batch sono-adsorption technique was investigated using influenced parameter...
Sivamani Sivalingam and Sujit Sen
Elsevier BV
Sivamani Sivalingam and Sujit Sen
Elsevier BV
Sivamani Sivalingam, Tatinaidu Kella, Manisha Maharana, and Sujit Sen
Elsevier BV
Sivamani Sivalingam and Sujit Sen
Elsevier BV
Sivamani Sivalingam and Sujit Sen
Elsevier BV
Sivamani Sivalingam and Sujit Sen
Elsevier BV