Chetan Singh, Dipti Soni, Rehana Khanam, Rohitash Kumar, Bhavya Vyas, Rajput Vishakha Ranjitisinh | International Journal of Green Chemistry | Vol 11, Issue 02 | pp. 1-17 | ISSN: 2582-5925
Abstract
This study examines seasonal fluctuation in Ayad River water quality, Rajasthan, India and compares the performance of titanium dioxide (TiO2)-mediated photocatalytic treatment under natural sunlight irradiance. Ayad River is a critical source of freshwater for domestic, agricultural and environmental purposes, which is increasingly stressed by urban runoff, industrial effluent and seasonality. As a follow-up to the above, water samples of four important water sources- Thurmadar, Subhas Nagar Bridge (Ayad), Kanpur Mahadev and SukhaNala were taken in summer season and treated with TiO2 as a photocatalyst under natural sunlight. General physicochemical parameters, such as pH, dissolved oxygen (DO), biochemical oxygen demand (BOD)[CE1] , chemical oxygen demand (COD), total dissolved solids (TDS), and ions, such as Ca²⁺, Mg²⁺, NO2⁻, Cl⁻, and SO4²⁻, were analyzed following standard procedure (IS:3025). Comparison study of pre- and post-treatment investigations showed enhanced quality of water at both places. Particularly, COD concentrations fell by approximately 60–80%, while BOD levels showed a remarkable fall, a proof of effective oxidation of the organic contaminants. Rising DO indicated promise for restoration of the ecosystem. Moreover, decrease in nitrate and fluoride concentration provided safety and potability to the ecosystem. The research proves the effectiveness of TiO2 photocatalysis as a low-cost, mass-transferable and green water treatment technology for the mitigation of river water pollution in urban areas. The findings affirm the viability of integrating green technologies into river systems and provide a scientific basis for applying sustainable water treatment processes in other parts of the developing world with comparable problems.
Keywords
Water quality assessment, Ayad River, titanium dioxide (TiO2), Photocatalysis, seasonal variation, chemical oxygen demand (COD), biochemical oxygen demand (BOD)
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How to cite this article
@article{SinghC2025,
author = {Chetan Singh and Dipti Soni and Rehana Khanam and Rohitash Kumar and Bhavya Vyas and Rajput Vishakha Ranjitisinh},
title = {A Comparative Study of Seasonal Variability and Photocatalytic Impact on Water Quality of the Ayad River, Rajasthan},
journal = {International Journal of Green Chemistry},
year = {2025},
volume = {11},
number = {02},
pages = {1--17},
issn = {2582-5925},
url = {https://journalspub.com/publication/ijgc/article=22814}
}