Journal of
Environmental Chemistry and Ecotoxicology

  • Abbreviation: J. Environ. Chem. Ecotoxicol.
  • Language: English
  • ISSN: 2141-226X
  • DOI: 10.5897/JECE
  • Start Year: 2009
  • Published Articles: 197

Full Length Research Paper

Physicochemical dynamics of the impact of paper mill effluents on Owerrinta River, eastern Nigeria

Ihejirika Chinedu Emeka1*, Emereibeole Enos Ihediohamma1, Nwaogu Linus2, Uzoka Christopher Ndubuisi1 and Amaku Grace Ebele1
  1Department of Environmental Technology, Federal University of Technology, Owerri, Nigeria. 2Department of Biochemistry, Federal University of Technology, Owerri, Nigeria.
Email: [email protected]

  •  Accepted: 29 September 2011
  •  Published: 31 October 2011



Industrial effluent discharge constitute major source of water pollution.  Effects of effluent discharge from three paper mill industries on recipient Owerrinta River was determined by subjecting samples to standard physicochemical analysis.  All values were within standard excepting the pH value of Effluent-II sample (3.92) and Total Suspended Solids values of all the effluent samples (84, 496, and 165 mg/L) respectively.  There were significant variations (P < 0.05) between effluents and river samples and within effluents and river samples respectively, for all the parameters.  The values varied as follows: temperature (24.70 – 24.12); pH (6.68 – 3.92); conductivity (64.67 – 0.02); Turbidities (259.00 – 16.00); Total Dissolved Solids (29.50 – 1.50); Total Suspended Solids (496.00 – 2.02); nitrate (NO3-) (19.10 – 0.08); phosphate (PO42-) (0.81 – 0.02); sulphate (SO42-) (34.00 – 0.06); Biochemical Oxygen Demand (1.09 – 0.41); Chemical Oxygen Demand (8.25 – 0.72) and Oil and Grease (4.01 – 1.92).  Variations from River samples indicated impact from effluents discharge, while variations in effluents values implied the contributory pattern of the effluents to River quality.  The River recovered from some parameter.  Treatment of effluents to insignificant values will reduce the impact on River quality.


Key words: Paper mill, effluents, Owerrinta River, water quality, sustainable, development.