Waste Management and Disposal, Metals and Alloys, Environmental Engineering, Biochemistry, Genetics and Molecular Biology
8
Scopus Publications
261
Scholar Citations
7
Scholar h-index
7
Scholar i10-index
Scopus Publications
Application of photoelectrochemical oxidation of wastewater used in the cooling tower water and its influence on microbial corrosion Seenivasan Kokilaramani, Alagersamy Satheeshkumar, M. S. Nandini, Jayaraman Narenkumar, Mohamad S. AlSalhi, Sandhanasamy Devanesan, Prabhu Manickam Natarajan, Rajaram Rajamohan, Aruliah Rajasekar, Tabarak Malik Frontiers in Microbiology, 2024 BackgroundCooling towers are specialized heat exchanger devices in which air and water interact closely to cool the water's temperature. However, the cooling water contains organic nutrients that can cause microbial corrosion (MC) on the metal surfaces of the tower. This research explores the combined wastewater treatment approach using electrochemical-oxidation (EO), photo-oxidation (PO), and photoelectrochemical oxidation (PEO) to contain pollutants and prevent MC.MethodsThe study employed electro-oxidation, a process involving direct current (DC) power supply, to degrade wastewater. MC studies were conducted using weight loss assessments, scanning electron microscopy (SEM), and x-ray diffraction (XRD).ResultsAfter wastewater is subjected to electro-oxidation for 4 h, a notable decrease in pollutants was observed, with degradation efficiencies of 71, 75, and 96%, respectively. In the wastewater treated by PEO, microbial growth is restricted as the chemical oxygen demand decreases.DiscussionA metagenomics study revealed that bacteria present in the cooling tower water consists of 12% of Nitrospira genus and 22% of Fusobacterium genus. Conclusively, PEO serves as an effective method for treating wastewater, inhibiting microbial growth, degrading pollutants, and protecting metal from biocorrosion.
Characterization of plants and seaweeds based corrosion inhibitors against microbially influenced corrosion in a cooling tower water environment Mohamad S AlSalhi, Sandhanasamy Devanesan, Aruliah Rajasekar, Seenivasan Kokilaramani Arabian Journal of Chemistry, 2023 This study compares the inhibitory activities of methanolic extraction of various plants including Artemisia pallens (MEAP), mangrove leaves like Rhizophora mangle (MERM), Avicennia marina (MEAM) and seaweeds such as Pandia povanica (MEPP), Sargassum tenerrimum (MEST) on the corrosion of mild steel (MS) coupons that were incubated on Pseudomonas stutzeri (P. stutzeri) SKR4 strain isolated from the cooling tower water (CTW). The activities of inhibitors are found using GCMS analysis and interactions between microbes and inhibitors were examined in the test for antibacterial activity, minimal inhibition concentration, biofilm formation assay. These all show an excellent inhibitory effect against P. stutzeri. The weight loss, impedance spectroscopy, and Tafel polarization tests used to validate the corrosion investigations show that the inhibitors MEAP-75, MERM-71, MEAM-69, MEPP-66 and MEST-63 % are effective at inhibiting corrosion at 25 ppm. According to Potentiodynamic polarization plots, these five inhibitors act as mixed-type inhibitors. The surface investigation of MS metals by FTIR, SEM, XRD to examine the biofilm surface and it revealed deep pitting corrosion in the bacterial system. In the conclusion, eco-friendly green inhibitors have controlled the biocorrosion in cooling tower water and are recommended for usage in industries as an alternative to environmentally hazardous inhibitors.
Evaluation of crude methanolic mangrove leaves extract for antibiofilm efficacy against biofilm-forming bacteria on a cooling tower wastewater system Seenivasan Kokilaramani, Jayaraman Narenkumar, Mohamad S. AlSalhi, Sandhanasamy Devanesan, Parthiba Karthikeyan Obulisamy, Ramasamy Balagurunathan, Aruliah Rajasekar Arabian Journal of Chemistry, 2022 The present study demonstrated microbial corrosion protection of MS 1010 on cooling tower water using plant-based inhibitors derived from methanolic extraction of dry mangrove leaves (R.mangle and A.marina), and its assessment of antibacterial activity against corrosive bacteria (B.megaterium) was investigated. FT-IR and GC–MS analyzed the inhibitors component and corrosion behavior of MS 1010 on cooling water, with and without inhibitors were analyzed by EIS and Tafel studies. GC–MS spectra confirmed the presence of Myo-Inositol, 4-C-methyl and chromene as major constituents presented on the R.mangle whereas Lupeol, trifluoroacetate and beta-amyrin compounds were found on the A.marina. In the cooling water, these two inhibitors demonstrated outstanding antibacterial activity and controlled biofilm growth. As plant-based inhibitors were used in cooling water systems, EIS data showed a significant increase in Rct value when compared to the control system. Tafel plot indicates inhibitors have mixed inhibitory effects and for the systems with and without inhibitors, the icorr value was 1.5649A and 2.0875A, respectively. At the optimal dose of 25 ppm, the inhibitory efficiency of MERM and MEAM was 81% and 80%, respectively. The overall discussion reveals that inhibitor substances can be absorbed on the metal surface and then act as a dual role in inhibiting corrosive bacterial growth and barrier to the corrosion process in the cooling water system.
Biofilm formation on copper and its control by inhibitor/biocide in cooling water environment Jayaraman Narenkumar, Sandhanasamy Devanesan, Mohamad S. AlSalhi, Seenivasan Kokilaramani, Yen-Peng Ting, Pattanathu K.S.M. Rahman, Aruliah Rajasekar Saudi Journal of Biological Sciences, 2021 The present study has successfully identified the nitrate reducing bacteria present in the cooling water system and also investigated the performance of industrially applied biocide and inhibitor on the bacterial inhibition. In order to carry out the objective of this study, facilities and methods such as 16S rRNA gene sequencing, Lowry assay, SEM, EIS, ICP-MS and weight loss analysis were being utilized. In this study, two out of the five morphologically dis- similar colonies identified through 16S rRNA gene sequencing, namely the Massilia timonae and the Pseudomonas, were being utilized in the biocorrosion study on copper metal. From the surface analysis using SEM demonstrated the phenomenon of biofilm formation on the copper surface. 2-methylbenzimidazole has the addition of methyl group in the diazole ring position of benzimidazole it has create basicity environment and inhibit the metal deterioration. Meanwhile, it is also deducible from the EIS and protein analysis that com- bination of biocide with either of the inhibitors gives rise to better biocorrosion suppression (0.00178 mpy and 0.00171mpy) as compared to the sole effect of either biocide or inhibitor (0.00219 mpy, 0.00162 and 0.00143). Biocorrosion system biocide with MBM was found to exhibit 65% corrosion inhibition efficiency. Moreover, adoption of 2-Methylbenzimidazole seems to display better performance as compared to Multionic 8151, which is adopted in cooling water system.
Microbial influenced corrosion of processing industry by re-circulating waste water and its control measures - A review Seenivasan Kokilaramani, Mysoon M. Al-Ansari, Aruliah Rajasekar, Fatimah S. Al-Khattaf, AlMalkiReem Hussain, Muthusamy Govarthanan Chemosphere, 2021 In this review article, illustrating the impact and fundamental stuff of microbially influenced corrosion (MIC) along with mechanism, maintenance of materials, human life, wellbeing and inhibitors for cooling towers. Corrosion is a natural mechanism of oxidation and reduction of metal ions by chemical and electrochemical processes and microorganism accumulation. MIC occurs through the aggregation of microbes which can be secreting the extra polymeric substances (EPS) that oxidation of the metal surface. According to the reviews, in the cooling water system, the corrosion begins in the anode charge because its oxidation reaction quickly takes place on the metal surface than the cathode charge. Annihilate the corrosion process needs certain helper substances such as chemical or green compounds, called inhibitors. Corrosion inhibitors typically adopt the adsorption mechanism due to the presence of organic hetero atoms. Chemical and green inhibitors are used to prevent corrosion processes and since ancient times, vast quantities of chemical inhibitors have been used in industry due to their effectiveness and consistency. But still, the chemical inhibitors are more toxic to humans and the environment. Instead of chemical inhibitors, green inhibitors (natural products like plant leaves, flowers, stem, buds, roots and sea algae) are developed and used in industries. Generally, green inhibitors contain natural compounds, high inhibition efficiency, economic, eco- and human-friendly, and strong potential features against corrosion. Thus, a lot of research is ongoing to discover the green inhibitors in various parts of plants and seaweeds.
Application of photoelectrochemical oxidation of wastewater used in the cooling tower water and its influence on microbial corrosion S Kokilaramani, A Satheeshkumar, MS Nandini, J Narenkumar, ... Frontiers in Microbiology 15, 1297721 , 2024 2024 Citations: 7
Characterization of plants and seaweeds based corrosion inhibitors against microbially influenced corrosion in a cooling tower water environment MS AlSalhi, S Devanesan, A Rajasekar, S Kokilaramani Arabian Journal of Chemistry 16 (3), 104513 , 2023 2023 Citations: 37
Bio-approach: preparation of RGO-AgNPs on cotton fabric and interface with sweat environment for antibacterial activity P Dhandapani, M Santhoshkumar, J Narenkumar, MS AlSalhi, PA Kumar, ... Bioprocess and Biosystems Engineering 45 (11), 1825-1837 , 2022 2022 Citations: 18
Evaluation of crude methanolic mangrove leaves extract for antibiofilm efficacy against biofilm-forming bacteria on a cooling tower wastewater system S Kokilaramani, J Narenkumar, MS AlSalhi, S Devanesan, PK Obulisamy, ... Arabian Journal of Chemistry 15 (7), 103948 , 2022 2022 Citations: 20
Biofilm formation on copper and its control by inhibitor/biocide in cooling water environment J Narenkumar, S Devanesan, MS AlSalhi, S Kokilaramani, YP Ting, ... Saudi Journal of Biological Sciences 28 (12), 7588-7594 , 2021 2021 Citations: 20
Characterization of methanolic extract of seaweeds as environmentally benign corrosion inhibitors for mild steel corrosion in sodium chloride environment S Kokilaramani, A Rajasekar, MS AlSalhi, S Devanesan Journal of Molecular Liquids 340, 117011 , 2021 2021 Citations: 26
Microbial influenced corrosion of processing industry by re-circulating waste water and its control measures-A review S Kokilaramani, MM Al-Ansari, A Rajasekar, FS Al-Khattaf, AMR Hussain, ... Chemosphere 265, 129075 , 2021 2021 Citations: 102
Bacillus megaterium -induced biocorrosion on mild steel and the effect of Artemisia pallens methanolic extract as a natural corrosion inhibitor S Kokilaramani, MS AlSalhi, S Devanesan, J Narenkumar, A Rajasekar, ... Archives of microbiology 202 (8), 2311-2321 , 2020 2020 Citations: 31
MOST CITED SCHOLAR PUBLICATIONS
Microbial influenced corrosion of processing industry by re-circulating waste water and its control measures-A review S Kokilaramani, MM Al-Ansari, A Rajasekar, FS Al-Khattaf, AMR Hussain, ... Chemosphere 265, 129075 , 2021 2021 Citations: 102
Characterization of plants and seaweeds based corrosion inhibitors against microbially influenced corrosion in a cooling tower water environment MS AlSalhi, S Devanesan, A Rajasekar, S Kokilaramani Arabian Journal of Chemistry 16 (3), 104513 , 2023 2023 Citations: 37
Bacillus megaterium -induced biocorrosion on mild steel and the effect of Artemisia pallens methanolic extract as a natural corrosion inhibitor S Kokilaramani, MS AlSalhi, S Devanesan, J Narenkumar, A Rajasekar, ... Archives of microbiology 202 (8), 2311-2321 , 2020 2020 Citations: 31
Characterization of methanolic extract of seaweeds as environmentally benign corrosion inhibitors for mild steel corrosion in sodium chloride environment S Kokilaramani, A Rajasekar, MS AlSalhi, S Devanesan Journal of Molecular Liquids 340, 117011 , 2021 2021 Citations: 26
Evaluation of crude methanolic mangrove leaves extract for antibiofilm efficacy against biofilm-forming bacteria on a cooling tower wastewater system S Kokilaramani, J Narenkumar, MS AlSalhi, S Devanesan, PK Obulisamy, ... Arabian Journal of Chemistry 15 (7), 103948 , 2022 2022 Citations: 20
Biofilm formation on copper and its control by inhibitor/biocide in cooling water environment J Narenkumar, S Devanesan, MS AlSalhi, S Kokilaramani, YP Ting, ... Saudi Journal of Biological Sciences 28 (12), 7588-7594 , 2021 2021 Citations: 20
Bio-approach: preparation of RGO-AgNPs on cotton fabric and interface with sweat environment for antibacterial activity P Dhandapani, M Santhoshkumar, J Narenkumar, MS AlSalhi, PA Kumar, ... Bioprocess and Biosystems Engineering 45 (11), 1825-1837 , 2022 2022 Citations: 18
Application of photoelectrochemical oxidation of wastewater used in the cooling tower water and its influence on microbial corrosion S Kokilaramani, A Satheeshkumar, MS Nandini, J Narenkumar, ... Frontiers in Microbiology 15, 1297721 , 2024 2024 Citations: 7