Assessment of lowest chromium bioaccumulation vegetables irrigated by Sheba Leather Industry contaminated water in Wukro, Tigray – Ethiopia

High chromium concentration is threatening to the environment, since it is persistent and non-biodegradable pollutant while introduced once to our planet. Bioaccumulation capacity of chromium has carcinogenic potential to human beings. To minimize the risk of chromium bioaccumulation, the study was conducted in Wukro irrigation fields. 54 plants, 24 water and 18 soil samples were collected in triplication from the selected points of upstream, treatment plant and downstream of the Sheba leather industry. Samples were transported to advanced laboratory for chromium analysis and results were analysed by R-software. Downstream vegetable samples were measured higher chromium bioaccumulation compared to the upstream sites. Highest chromium concentration was recorded in rood edible vegetables, and the lowest was measured in fruit edible vegetables. Chromium concentration was significantly different between the upstream and downstream vegetables, water and soil samples at p<0.01, p<0.05 and p < 0.001 respectively. The chromium bioaccumulation order were root edible > leaf edible > fruit edible vegetables. Environmental laws have to be strictly enforced and further researches are recommended.

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Determination of Polycyclic Aromatic Hydrocarbons in Contaminated Water and Soil Samples by Immunological and Chromatographic Methods

Environmental Science & Technology ◽

10.1021/es991215f ◽

2000 ◽

Vol 34 (10) ◽

pp. 2035-2041 ◽

Cited By ~ 42

Author(s):

Dietmar Knopp ◽

Martin Seifert ◽

Virpi Väänänen ◽

Reinhard Niessner

Keyword(s):

Polycyclic Aromatic Hydrocarbons ◽

Aromatic Hydrocarbons ◽

Soil Samples ◽

Contaminated Water ◽

Chromatographic Methods ◽

Water And Soil Samples ◽

Polycyclic Aromatic

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Isolation, Screening and Identification of Phenol-Degrading Bacteria from Coking Wastewater

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.209-211.2027 ◽

2012 ◽

Vol 209-211 ◽

pp. 2027-2031

Author(s):

Xue Kai Sun ◽

Xi Ping Ma ◽

Cheng Bin Xu ◽

Jie Bai ◽

Wei Zhang

Keyword(s):

Activated Sludge ◽

Treatment Plant ◽

Contaminated Water ◽

Aeration Tank ◽

Coking Wastewater ◽

Human Beings ◽

Iron And Steel ◽

Degrading Bacteria ◽

Screening And Identification ◽

Physiological Tests

Phenol is the most common pollutant which can be found in several types of industries. It is highly toxic to human beings. To seek the best phenol-degrading bacteria, we collected activated sludge from an aeration tank of the coking wastewater treatment plant, Benxi Iron and Steel Corporation. Five phenol-degrading strains, designated BS3, BS4, BS23, BS28 and BS29, were isolated and screened from activated sludge. Under the conditions of initial phenol 500 mg•L-1,170 rpm and 28°C, the removal efficiencies of BS3, BS4, BS23, BS28 and BS29 strains reached to 79.6%±1.8%, 55.2%±1.0%, 62.4%±2.6%, 78.6%±2.0% and 61.2%±1.9% within 24 h, respectively. By a series of morphological and biochemical and physiological tests, the five phenol-degrading bacteria were identified. The results indicated that they were Pseudomonas spp.. Hence these strains can be effectively used for bioremediation of phenol contaminated water.

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Assessment of physiochemical, heavy metal and indicator bacterial groups in water and soil samples of different oil contaminated regions, Tiruchirappalli city

International Journal of Advances in Scientific Research ◽

10.7439/ijasr.v2i7.3513 ◽

2016 ◽

Vol 2 (7) ◽

pp. 146

Author(s):

C. Vinothini ◽

R. Ravikumar

Keyword(s):

Heavy Metal ◽

Continuous Monitoring ◽

Soil Samples ◽

Contaminated Water ◽

Sediment Samples ◽

Water And Sediment ◽

Water And Soil Samples ◽

Bacterial Groups ◽

Water And Sediment Samples

The levels of physiochemical, heavy metal and microbiological pollution in different oil contaminated regions of Tiruchirappalli city were reported in the study. The water and sediment samples from four different oil contaminated regions in Tiruchirappalli city were collected during monsoon 2015. The sampling regions were divided into two category such as heavy oil contaminated regions (oil shed / oil washed regions) and bus stand regions. In oil contaminated water sample, counts of TVC, TC, TS, FC, FS, VC, SAC, SHC and PC were in the range of 21300 126000, 1620 13200, 240 1050, 250 1130, 100 250, 120 180, 80 160, 130 200 and 260 560 CFU/mL, respectively. In soil sample, the TVC, TC, TS, FC, FS, VLO, SC and PC ranges were 56000 218000, 3100 14800, 350 1260, 330 1420, 150 300, 110 240, 120 200, 160 260 and 410 1060 CFU/g, respectively. The results of this study indicated that oil shed regions gor higher pollutions tha bus stand regions. This study gave a special emphasis on the determination of the levels of pollution and also identified the vulnerable regions. Hence, throughout impoundment and continuous monitoring is needed.

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