Physicochemical Properties and Metal Ions in Water and Sediment of the Dhaleshwari River

Authors

  • Md Mazharul Islam Department of Chemistry, University of Dhaka, Dhaka-1000, Bangladesh
  • Md Hossan Sohid Shoraoardy Bhuiyan Department of Chemistry, University of Dhaka, Dhaka-1000, Bangladesh
  • Rakibul Islam Department of Chemistry, University of Dhaka, Dhaka-1000, Bangladesh
  • Mohammad Shoeb Department of Chemistry, University of Dhaka, Dhaka-1000, Bangladesh
  • Md Iqbal Rouf Mamun Department of Chemistry, University of Dhaka, Dhaka-1000, Bangladesh
  • Md Hafizur Rahman Department of Chemistry, University of Dhaka, Dhaka-1000, Bangladesh

DOI:

https://doi.org/10.3329/dujs.v69i1.54622

Keywords:

Tannery industries, Water quality, Sediment quality, Physicochemical parameters, Dhaleshwari River, Pollutants

Abstract

This study was aimed to measure sediment and water quality parameter such as moisture and ash content, pH, TOC, TSS, BOD, TOC, DO, Electrical Conductivity (EC) and Na, K, Ca and Cr metal ions from Dhaleshwari River close to the Savar Tannery Estate (STE). The moisture and ash content of sediments were 23.45-31.42% and 2.09-5.80%, respectively. The pHs of sediment and water samples were 5.20-6.21 and 7.68-8.03, respectively. The average of Ca-hardness, DO and BOD in water were 885.9±88.8, 1.80±0.10 and 16.70± 1.43 mg/L, respectively. The EC of the sediment and water were 24.60-374.00 μS/cm and 32.80-39.50 mS/cm, respectively. The amount of TOC in sediment and water samples were 1.29-3.25g/100g and 2.28-2.70 mg/kg which are very low indicating the fewer amounts of plant and animal residues and sediment biota. TSS in water was 776-936 mg/L which is higher than the permissible limit (600 mg/kg). The Cr content was determined by AAS which implies that the sediment has significantly higher Cr content (38.78-681.62 mg/kg) compared to water (< 0.005 mg/L). The amount of Na and Ca ions were 26.81-45.00 and 16.04-27.36 mg/L, respectively while K ion was very negligible in water.

Dhaka Univ. J. Sci. 69(1): 37-42, 2021 (January)

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Published

2021-03-31

How to Cite

Islam, M. M., Bhuiyan, M. H. S. S., Islam, R., Shoeb, M., Mamun, M. I. R., & Rahman, M. H. (2021). Physicochemical Properties and Metal Ions in Water and Sediment of the Dhaleshwari River. Dhaka University Journal of Science, 69(1), 37–42. https://doi.org/10.3329/dujs.v69i1.54622

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