Journal article
Water quality and fluorescent dissolved organic matter dynamics of Dhaleshwari River
Frontiers in water, Vol.7, pp.1-14
13/02/2025
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Abstract
This study aimed to evaluate the physicochemical properties and the characteristics of the fluorescent dissolved organic matter (FDOM) in the Dhaleshwari River, located in the peripheral Dhaka district, Bangladesh. The Dhaleshwari River was selected as the study area due to the presence of a tannery industrial estate and various industries discharging effluents in the surrounding areas. The socioeconomic and ecological significance of the river is highly critical to the locality. Water samples were collected in the dry season for pH, electrical conductivity (EC), salinity, total dissolved solids (TDS), dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), and FDOM analyses. The river water quality values were compared to the recommended standards of the Environmental Conservation Rules (ECR), and it was observed that the BOD and COD levels exceeded the limits. The water quality index (WQI) values showed that river water is extremely polluted, and the values significantly increased from the upstream to the Keraniganj BSCIC area. 3DEEM-PARAFAC analysis confirmed the presence of protein-like substances, terrestrial humic and fulvic acids, and degraded fulvic acids in the samples, which provided evidence of organic matter pollution. Relatively higher FDOM levels were found in the upstream area of the river compared to the downstream part. Furthermore, we found that with the increase in the river depth, the FDOM substances decreased due to the absorption of sunlight, microbial degradation, and photosynthesis. It is recommended that industrial estates implement proper wastewater treatment plants, and the Department of Environment (DoE) should take political and legislative actions to establish an adequate water quality monitoring system.
Details
- Title
- Water quality and fluorescent dissolved organic matter dynamics of Dhaleshwari River
- Creators
- Mohammad Mohinuzzaman - Noakhali Science and Technology UniversityJannatul Mowa - Noakhali Science and Technology UniversityMohammad Mahbub Kabir - Noakhali Science and Technology UniversityMuhammed Alamgir Zaman Chowdhury - Bangladesh Atomic Energy CommissionMeherun Nesha - Bangladesh Atomic Energy CommissionKhan M. G. Mostofa - Tianjin UniversityNahin Mostofa Niloy - Jahangirnagar UniversityMashura Shammi - Jahangirnagar UniversityShafi M. Tareq - Jahangirnagar University
- Publication Details
- Frontiers in water, Vol.7, pp.1-14
- Publisher
- Frontiers Media S.A.
- Number of pages
- 14
- Grant note
- This research was supported by the Research Cell, Noakhali Science and Technology University, Project No. NSTU/RC-ESDM/T-21/57, 2020–21.
- Identifiers
- 991013372734302368
- Copyright
- © 2025 Mohinuzzaman, Mowa, Kabir, Chowdhury, Nesha, Mostofa, Niloy, Shammi and Tareq.
- Academic Unit
- Southern Cross Analytical Research Services; Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article