Tag Archives: Industrial Effluent

Effects of Industrial Effluent on the Environment Using Allium Cepa and Zea Mays As Bioindicators (Published)

Indiscriminate handling and disposal of industrial effluents into the environment represents one of the major sources of environmental pollution which invariably affects the health of man, plants and animals. The toxic effect of effluent from a candy-producing industry was investigated in terms of root growth inhibition and overall phytotoxicity using bio-indicator plants; Allium cepa and Zea mays. The presence and concentrations of some metals of environmental concern as well as Polycyclic Aromatic Hydrocarbons in the effluent were also determined. The Allium cepa and Zea mays tests were carried out at concentrations of 1, 5,10,25,50 and 100% of the untreated effluent. There was statistical significant (P<0.05) inhibition of root growth in both plants, the shoot length measurement also showed significant difference (P<0.05) at the different concentrations of the effluent as compared with the control. Morphological abnormalities were observed in the roots of the bio-indicator plants, it is therefore recommended that industrial effluents be treated before being disposed into the environment.  

Keywords: Allium Cepa, Bio-Indicators, Environment, Industrial Effluent, Phytotoxicity, Zea Mays

Effects of Industrial Effluent on the Environment Using Allium Cepa and Zea Mays as Bioindicators (Published)

Indiscriminate handling and disposal of industrial effluents into the environment represents one of the major sources of environmental pollution which invariably affects the health of man, plants and animals. The toxic effect of effluent from a candy-producing industry was investigated in terms of root growth inhibition and overall phytotoxicity using bio-indicator plants; Allium cepa and Zea mays. The presence and concentrations of some metals of environmental concern as well as Polycyclic Aromatic Hydrocarbons in the effluent were also determined. The Allium cepa and Zea mays tests were carried out at concentrations of 1, 5,10,25,50 and 100% of the untreated effluent. There was statistical significant (P<0.05) inhibition of root growth in both plants, the shoot length measurement also showed significant difference (P<0.05) at the different concentrations of the effluent as compared with the control. Morphological abnormalities were observed in the roots of the bio-indicator plants, it is therefore recommended that industrial effluents be treated before being disposed into the environment.  

Keywords: Allium Cepa, Bio-Indicators, Environment, Industrial Effluent, Phytotoxicity, Zea Mays

Determination of Volatile Organic Compounds in Petroleum Companies Using Liquid-Liquid Extraction (Published)

The recovery study of volatile organic compounds from effluents of petroleum companies in Ilorin East Local Government Area and its effect on the environmental matrixsurface water, soil, sediment and plant were sampled. The liquid-liquid extraction procedure of two organic solvent (Hexane: Dichloromethane) (50 ml: 50ml) was employed to remove volatile organic compounds from matrix so as to obtain a good recovery and repeatability at 0.01μg/l, 0.02μg/l and 0.05μg/l respectively. Sediment, soil and leaf of plant samples (10 g) were dried and soaked in hexane prior to extraction procedures, after which it was totalled into a 2 ml vial for Gas chromatography analysis. At 0.05μg/l obtained a percentage mean recovery and relative standard deviation for effluent water (82.7±2.5 – 95.0 ±1.0 %), surface water (62.3±2.5 – 97.7±4.2 %), soil (72.7±2.1 – 96.3±3.8 %), sediment (85.7±3.2 – 91.7±2.5 % ) and plant (79.3±2.5 – 99.3±2.0 %). Correlation analysis was carried out to establish a relationship between effluent and other matrix, at 0.02 μg/l percentage mean recovery effluent has effect on the sediment at that concentration. The remaining concentration levels did not show any significant relationship with the effluent variables.

Keywords: Industrial Effluent, Recovery Studies, VOCs, Volatile Organic Compounds