Diploma in Civil Engineering
B.E in Civil Engineering
MS in Civil Engineering
RESEARCH INTERESTS
Environmental Engineering, Geotechnical Engineering, Water Resource and Irrigation Engineering, Climate
FUTURE PROJECTS
Phytoremediation
Applications Invited
Hydroponics
Applications Invited
8
Scopus Publications
Scopus Publications
Integrating pollution indices and multivariate tolerance analysis for heavy metal risk assessment in Pollachi surface waters Senthil Kumar Dineshkumar, Mohanadhas Berlin, Narayanan Natarajan, Vasudevan Mangottiri Ish Journal of Hydraulic Engineering, 2026 Surface water contamination by heavy metals poses rising environmental and public health risks in rapidly urbanizing, agro‑intensive regions. This study evaluates the contamination intensity and ecological risk of copper (Cu), zinc (Zn), lead (Pb), iron (Fe), and mercury (Hg), in 10 inland waterbodies in and around Pollachi, Coimbatore region, Tamil Nadu. A holistic assessment couples conventional indices Contamination Factor, Enrichment Factor, Pollution Load Index, and Potential Ecological Risk Index with multivariate tools (PCA, CA and MTA) to delineate hotspots and apportion sources. Pre‑monsoon samples analysed by atomic absorption spectrophotometry revealed severe contamination Fe = 56.04–230.49 mg L−1 Cu = 8.32–29.88 mg L−1, Zn ≤ 21.83 mg L−1, Hg = 0–0.69 mg L−1, and Pb = 0.10–1.79 mg L−1. Pollachi Central and Zamin Uthukuli were critical hotspots (PLI up to 11; PERI 2400–2800). PCA showed 68.6% of variances, loadings indicated anthropogenic inputs, clustering grouped industrial proximal and mixed land‑use sites, MTA identified outliers at Kaliyapuram and Angalakuruchi. CF/EF patterns showed high enrichment of Pb and Hg at sites caused by industrial effluents, agricultural runoff, and urban waste. The integrated index multivariate framework strengthens diagnostic confidence and provides practical evidence for continuous monitoring, source control and remediation to protect our ecosystem.
Assessment of Eggshell Waste as a Sustainable Calcium Source for Biocementation-Based Soil Stabilization Sivalingam Sharmila, Mangottiri Vasudevan, Senthilkumar Dineshkumar, Narayanan Natarajan, K. Sindhuja Journal of Solid Waste Technology and Management, 2025 Biological methods of soil stabilization are emerging as potential futuristic solutions for repair and maintenance of built infrastructure. However, development of a sustainable solution requires reliable supply of raw materials with added privileges in the context of circular economy. This study investigates the potential of waste egg shells as an eco-friendly source of calcium for microbially induced calcium carbonate precipitation (MICP) using Sporosarcina pasteurii MTCC 1761, with the aim of enhancing the geotechnical properties of Sea Shore Sand (SSS) and Dry Clayey Soil (DCS). The collection and utilization of the raw materials were administered with minimum processing steps. The mechanical and biochemical properties of SSS and DCS using Sporosarcina pasteurii were compared in the presence of two alternative calcium sources (eggshell powder (ESP) and calcium hydroxide (CH)). The results showed an increase in shear strength up to 0.35 kg/cm2 for SSS-CH and 0.29 kg/cm2 for SSS-ESP. Similarly, the unconfined compression strength for cohesive soil (DCS) reached up to 0.41 kg/cm2 under the test conditions. Further, an adaptive mechanistic framework is proposed for selecting an optimal implementation strategy for MICP using recycled materials such as ESP. For this, a correlation matrix is developed describing the relationship between cause, evidence and effect of soil stabilization based on biocementation. We propose that ESP can be a promising source of calcium for enhancing the sustainability of biocementation irrespective of the soil type.
