Dr. Kilaru Harsha Vardhan currently works as Professor in Department of Biotechnology, Anand Institute of Higher Technology, Chennai and has 26 years of teaching experience at various reputed Engineering Colleges in Tamilnadu. He has completed his Ph.D. in the Chemical Engineering at Anna University, Chennai, M.Tech. in Chemical Engineering from IIT Madras, Chennai and B.Tech. in Chemical Engineering from St. Joseph’s College of Engineering, Chennai. His areas of interest are Environmental Engineering, Process control. He has hands on experience on Chemical Engineering Simulation Softwares like Aspen plus, Hysys, ChemCad and Matlab etc. He has organized a national workshops on Chemcad simulation software and Matlab based Process control. He is a Fellow of The Institution of Engineers ( India) and Life member of ISTE and IIChE.
EDUCATION
Doctor of Philosophy
RESEARCH, TEACHING, or OTHER INTERESTS
Chemical Engineering, Environmental Engineering, Renewable Energy, Sustainability and the Environment, Control and Optimization
14
Scopus Publications
2583
Scholar Citations
10
Scholar h-index
10
Scholar i10-index
Scopus Publications
An energy efficient hybrid membrane technique for the removal of toxic metals from aquatic environment Kilaru Harsha Vardhan, P. Senthil Kumar, B. Senthil Rathi, M. Varsha Desalination and Water Treatment, 2024 Electrodeionization (EDI), integrates electrodialysis (ED) and ion exchange (IE) technology. The purpose of this study is to utilize an EDI unit for eliminating copper from wastewater. This process was demonstrated using a three-compartment system, comprising a central compartment filled with a cation exchange resin (CER), separated from the anodic and cathodic chambers by two cationic exchange membranes (CEM), with the anode and cathode placed in the anodic and cathodic chambers, respectively. Purolite C 160 was used to showcase how operational variables, such as initial concentration, contact duration, resin dosage, and temperature, were optimized for the most effective copper removal during batch mode operation. The optimized conditions were an initial concentration of 100 ppm, a Purolite C dose of 0.5 g/L, a contact time of 1 h, and a pH of 8. At an initial copper concentration of 100 ppm and a supply voltage in the range of 10 to 25 V, the highest copper removal achieved was close to 99.98 per cent. For this study, copper was eliminated in the described experiments up to 99.98%, with energy consumption in the EDI unit varying between 3.87 and 25.29 kWh per kg of removed copper.
Hydrothermally Produced Activated Carbon Impregnated with ZnO for the Adsorptive Removal of Toxic Pharmaceutical Contaminants from Aqueous Solution Kilaru Harsha Vardhan, Hrishitha Sree, P. Senthil Kumar, B. Senthil Rathi International Journal of Chemical Engineering, 2024 This research explores the adsorption (AD) of diclofenac sodium (DS) onto a Hydrothermally produced activated carbon impregnated with ZnO (HTC-AC/ZnO) surface, considering various factors such as initial concentration (IC), adsorbent dose, contact time, and pH. The characterization of HTC-AC/ZnO was performed using X-ray diffractometer (XRD), scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), and nitrogen physisorption spectroscopy (BET). Tests were conducted with different adsorbent doses (0.5–4 g/L) at 303 K and various initial diclofenac concentrations (ranging from 50 mg/L to 250 mg/L) to observe their effects. Additionally, pH values were altered from 2 to 12 to study their influence on AD. Kinetic studies, thermodynamic studies, and AD isotherm models were examined. The Temkin isotherm model (TIM) was found to be the most accurate for DS-AD on HTC-AC/ZnO. For DS-AD on HTC-AC/ZnO, pseudo-first-order models (PFOM), intraparticle diffusion model (IPDM), and pseudo-second-order models (PSOM) were applied, with a correlation coefficient of 0.945, indicating a good fit for PFOM. The kinetics suggested rapid adsorption. Notably, the HTC-AC/ZnO composite exhibited consistent AD characteristics across four consecutive cycles, with a removal efficiency exceeding 99.38%. This suggests that HTC-AC/ZnO is an appropriate and economically viable adsorbent for the elimination of DS from water-based solutions. The investigation provides compelling evidence that HTC-AC/ZnO is a viable adsorbent for the effective elimination of DS from water sources.
Effective removal of naphthalene from contaminated soil using halotolerant bacterial strains and vermiremediation techniques Reshma Bhandari, Kilaru Harsha Vardhan, P. Senthil Kumar, K. Veena Gayathri International Journal of Environmental Analytical Chemistry, 2023 The marine environment poses a serious threat due to accidental oil spill and industrial discharge specifically from refineries which has become a serious threat to the marine ecosystem. Most of the recalcitrant compounds belong to the group of polyaromatic hydrocarbons. Hence, the present study focuses on biodegradability of simple Polycyclic Aromatic Hydrocarbon (PAH) such as Naphthalene using halotolerant bacterial consortium isolated from oil-spilled environment. Two halotolerant bacterial consortiums were isolated based on the degradation of PAH which measured to be 69.38% by RSKVG1 and 30.61% by RSKVG2 after 96 hours. Naphthalene utilisation was up to 100 mg/L by RSKVG1 and 300 mg/L by RSKVG2. Further, the isolates were optimised for different parameters, optimum NaCl concentration was 30 g/L and 50 g/L by RSKVG1 and RSKVG2, respectively. The functional groups and secondary metabolites produced by the bacterial strains were characterised by FT-IR, HPLC, and GC-MS analysis. Biochemical, morphological and Molecular characterisation, and construction of phylogenetic tree was done which revealed the significant similarity of RSKVG1 and RSKVG2 to Bacillus thuringiensis and Bacillus pacificus respectively. The Naphthalene was also studied for the degradation using the vermiremediation technique.
Adsorptive elimination of methylene blue dye from aquatic system using biochar produced from cocoa shell D. Prabu, P. Senthil Kumar, Kilaru Harsha Vardhan, S. Sathish, Alan Raju, John Mathew Desalination and Water Treatment, 2020 The present research aims to investigate the potential of new biochar prepared from cocoa shell (CS), through the chemical modification method [sulfuric acid-modified CS (SMCS)]. The prepared material was found to possess an excellent adsorption capacity for the elimination of Methylene blue (MB) dye from a polluted environment by experimenting the several operating parameters which include initial dye concentration, contact time, solution pH, temperature and adsorbent dose. SMCS was characterized using scanning electron microscopy-energy dispersive analysis of X-rays, thermo-gravimetric analysis, Fourier transform infrared, and Brunauer–Emmett–Teller analysis. The equilibrium data were best discussed by the Freundlich model. Langmuir model capacity was estimated at 163.5 mg/g for MB dye removal. The feasibility and spontaneous activities of the adsorption process were observed because of the negative values of Gibbs free energy obtained for SMCS-MB dye adsorption system. Pseudo-first-order, pseudo-second-order, and Elovich kinetic models have been tested for kinetic data of SMCS-MB dye system. Pseudo-firstorder model showed good results for SMCS-MB dye system. Through obtained results, it was concluded that the SMCS can act as a potential low cost, environmental friendly, and effective adsorbents and which can be employed as an alternative to various commercial adsorbents.
Hydrothermally produced activated carbon impregnated with ZnO for the adsorptive removal of toxic pharmaceutical contaminants from aqueous solution KH Vardhan, H Sree, PS Kumar, BS Rathi International Journal of Chemical Engineering 2024 (1), 8434050 , 2024 2024 Citations: 3
An energy efficient hybrid membrane technique for the removal of toxic metals from aquatic environment KH Vardhan, PS Kumar, BS Rathi, M Varsha Desalination and Water Treatment 317, 100196 , 2024 2024 Citations: 5
Effective removal of naphthalene from contaminated soil using halotolerant bacterial strains and vermiremediation techniques R Bhandari, K Harsha Vardhan, PS Kumar, KV Gayathri International Journal of Environmental Analytical Chemistry 103 (4), 761-778 , 2023 2023 Citations: 9
Adsorptive behaviour of surface tailored fungal biomass for the elimination of toxic dye from wastewater V Karthik, PS Kumar, K Harsha Vardhan, K Saravanan, N Nithyakala International Journal of Environmental Analytical Chemistry 102 (16), 4710-4725 , 2022 2022 Citations: 17
Adsorption of copper ions from polluted water using biochar derived from waste renewable resources: static and dynamic analysis K Harsha Vardhan, PS Kumar, RC Panda International Journal of Environmental Analytical Chemistry 102 (16), 4067-4088 , 2022 2022 Citations: 28
Metal mixed biochar electrodes for the generation of electricity with high power density in microbial fuel cell M Ramya, KH Vardhan, PS Kumar Sustainable Energy Technologies and Assessments 53, 102549 , 2022 2022 Citations: 23
A disposable modified screen-printed electrode using egg white/ZnO rice structured composite as practical tool electrochemical sensor for formaldehyde detection and its … G Padmalaya, KH Vardhan, PS Kumar, MA Ali, TW Chen Chemosphere 288, 132560 , 2022 2022 Citations: 36
Effective removal of malachite green dye from aqueous solution in hybrid system utilizing agricultural waste as particle electrodes AA Renita, KH Vardhan, PS Kumar, PT Ngueagni, A Abilarasu, S Nath, ... Chemosphere 273, 129634 , 2021 2021 Citations: 77
Water Footprint in Leather Tanning and Steel Production PS Kumar, PT Ngueagni, ED Woumfo, KH Vardhan Water Footprint: Assessment and Case Studies, 137-156 , 2021 2021 Citations: 4
Adsorptive elimination of methylene blue dye from aquatic system using biochar produced from cocoa shell D Prabu, PS Kumar, KH Vardhan, S Sathish, A Raju, J Mathew Desalination and Water Treatment 203, 366-378 , 2020 2020 Citations: 9
Microalgae for biofuel production and removal of heavy metals: a review KG Pavithra, PS Kumar, V Jaikumar, KH Vardhan, PS SundarRajan Environmental Chemistry Letters 18 (6), 1905-1923 , 2020 2020 Citations: 149
Performance of montmorillonite/graphene oxide/CoFe2O4 as a magnetic and recyclable nanocomposite for cleaning methyl violet dye-laden wastewater R Foroutan, R Mohammadi, F MousaKhanloo, S Sahebi, B Ramavandi, ... Advanced Powder Technology 31 (9), 3993-4004 , 2020 2020 Citations: 134
A review on systematic approach for microbial enhanced oil recovery technologies: Opportunities and challenges A Saravanan, PS Kumar, KH Vardhan, S Jeevanantham, SB Karishma, ... Journal of Cleaner Production 258, 120777 , 2020 2020 Citations: 119
A review on heavy metal pollution, toxicity and remedial measures: Current trends and future perspectives KH Vardhan, PS Kumar, RC Panda Journal of Molecular Liquids 290, 111197 , 2019 2019 Citations: 1935
Removal of Zn (II) ions from aqueous solution using chemically modified Annona reticulata seeds: kinetics, isotherm and thermodynamics KH Vardhan, RC Panda, A Saravanan Desalination and Water Treatment 122, 66-77 , 2018 2018 Citations: 7
RSM and ANN modeling for electro-oxidation of simulated wastewater using CSTER R Saravanathamizhan, KH Vardhan, DG Prakash, N Balasubramanian Desalination and Water Treatment 55 (6), 1445-1452 , 2015 2015 Citations: 7
Neural network model for condition monitoring of wear and film thickness in a gearbox C Sreepradha, A Krishna Kumari, A Elaya Perumal, RC Panda, ... Neural Computing and Applications 24 (7), 1943-1952 , 2014 2014 Citations: 21
MOST CITED SCHOLAR PUBLICATIONS
A review on heavy metal pollution, toxicity and remedial measures: Current trends and future perspectives KH Vardhan, PS Kumar, RC Panda Journal of Molecular Liquids 290, 111197 , 2019 2019 Citations: 1935
Microalgae for biofuel production and removal of heavy metals: a review KG Pavithra, PS Kumar, V Jaikumar, KH Vardhan, PS SundarRajan Environmental Chemistry Letters 18 (6), 1905-1923 , 2020 2020 Citations: 149
Performance of montmorillonite/graphene oxide/CoFe2O4 as a magnetic and recyclable nanocomposite for cleaning methyl violet dye-laden wastewater R Foroutan, R Mohammadi, F MousaKhanloo, S Sahebi, B Ramavandi, ... Advanced Powder Technology 31 (9), 3993-4004 , 2020 2020 Citations: 134
A review on systematic approach for microbial enhanced oil recovery technologies: Opportunities and challenges A Saravanan, PS Kumar, KH Vardhan, S Jeevanantham, SB Karishma, ... Journal of Cleaner Production 258, 120777 , 2020 2020 Citations: 119
Effective removal of malachite green dye from aqueous solution in hybrid system utilizing agricultural waste as particle electrodes AA Renita, KH Vardhan, PS Kumar, PT Ngueagni, A Abilarasu, S Nath, ... Chemosphere 273, 129634 , 2021 2021 Citations: 77
A disposable modified screen-printed electrode using egg white/ZnO rice structured composite as practical tool electrochemical sensor for formaldehyde detection and its … G Padmalaya, KH Vardhan, PS Kumar, MA Ali, TW Chen Chemosphere 288, 132560 , 2022 2022 Citations: 36
Adsorption of copper ions from polluted water using biochar derived from waste renewable resources: static and dynamic analysis K Harsha Vardhan, PS Kumar, RC Panda International Journal of Environmental Analytical Chemistry 102 (16), 4067-4088 , 2022 2022 Citations: 28
Metal mixed biochar electrodes for the generation of electricity with high power density in microbial fuel cell M Ramya, KH Vardhan, PS Kumar Sustainable Energy Technologies and Assessments 53, 102549 , 2022 2022 Citations: 23
Neural network model for condition monitoring of wear and film thickness in a gearbox C Sreepradha, A Krishna Kumari, A Elaya Perumal, RC Panda, ... Neural Computing and Applications 24 (7), 1943-1952 , 2014 2014 Citations: 21
Adsorptive behaviour of surface tailored fungal biomass for the elimination of toxic dye from wastewater V Karthik, PS Kumar, K Harsha Vardhan, K Saravanan, N Nithyakala International Journal of Environmental Analytical Chemistry 102 (16), 4710-4725 , 2022 2022 Citations: 17
Effective removal of naphthalene from contaminated soil using halotolerant bacterial strains and vermiremediation techniques R Bhandari, K Harsha Vardhan, PS Kumar, KV Gayathri International Journal of Environmental Analytical Chemistry 103 (4), 761-778 , 2023 2023 Citations: 9
Adsorptive elimination of methylene blue dye from aquatic system using biochar produced from cocoa shell D Prabu, PS Kumar, KH Vardhan, S Sathish, A Raju, J Mathew Desalination and Water Treatment 203, 366-378 , 2020 2020 Citations: 9
Removal of Zn (II) ions from aqueous solution using chemically modified Annona reticulata seeds: kinetics, isotherm and thermodynamics KH Vardhan, RC Panda, A Saravanan Desalination and Water Treatment 122, 66-77 , 2018 2018 Citations: 7
RSM and ANN modeling for electro-oxidation of simulated wastewater using CSTER R Saravanathamizhan, KH Vardhan, DG Prakash, N Balasubramanian Desalination and Water Treatment 55 (6), 1445-1452 , 2015 2015 Citations: 7
An energy efficient hybrid membrane technique for the removal of toxic metals from aquatic environment KH Vardhan, PS Kumar, BS Rathi, M Varsha Desalination and Water Treatment 317, 100196 , 2024 2024 Citations: 5
Water Footprint in Leather Tanning and Steel Production PS Kumar, PT Ngueagni, ED Woumfo, KH Vardhan Water Footprint: Assessment and Case Studies, 137-156 , 2021 2021 Citations: 4
Hydrothermally produced activated carbon impregnated with ZnO for the adsorptive removal of toxic pharmaceutical contaminants from aqueous solution KH Vardhan, H Sree, PS Kumar, BS Rathi International Journal of Chemical Engineering 2024 (1), 8434050 , 2024 2024 Citations: 3