scholarly journals Design of Reactors for Bioremediation of Hydrocarbon Contaminated Water Bodies

2020 ◽  
Vol 3 (9) ◽  
pp. 183-195
Author(s):  
 Elelu Madu Clement ◽  
Amadi SA ◽  
Dagde KK ◽  
Iregbu PO
Keyword(s):  
Water Bodies ◽  
Contaminated Water

scholarly journals Environmental Impacts of an Old Mine Tailings Deposit – Metal Concentrations and Water Pathways

1987 ◽  
Vol 18 (4-5) ◽  
pp. 301-312 ◽  
Author(s):  
P. Sandén ◽  
S. Karlsson ◽  
U. Lohm
Keyword(s):  
Environmental Impacts ◽  
Mine Tailings ◽  
Water Bodies ◽  
Contaminated Water ◽  
Surrounding Area ◽  
Metal Concentrations ◽  
Principal Source ◽  
Zinc Cadmium ◽  
Copper Zinc ◽  
Cadmium And Lead

Variations in metal concentrations in a heavily polluted stream receiving acidic leachates from an old mine tailings deposit are analysed from a hydrological perspective. From an extensive data material, collected during three years, the variations in concentrations of four metals (copper, zinc, cadmium and lead) are discussed. The deposit is the principal source for these metals in the watershed. The variation in metal concentrations in the vicinity of the deposit can to a large extent be explained by simple dilution of contaminated water with uncontaminated water from the surrounding area. Further downstream the deposit, other processes become increasingly important for the metal concentrations in the water bodies.

scholarly journals Hexavalent Chromium Removal from Groundwater—A Low-Tech Approach

2020 ◽  
Vol 2 (1) ◽  
pp. 25
Author(s):  
Samiotis Georgios ◽  
Lefteri Lefteris ◽  
Mavromatidou Charoula ◽  
Tsioptsias Costas ◽  
Trikilidou Eleni ◽  
...  
Keyword(s):  
Hexavalent Chromium ◽  
Low Cost ◽  
Water Bodies ◽  
Contaminated Water ◽  
Chromium Removal ◽  
Chromium Reduction ◽  
Complete Understanding ◽  
Pump And Treat ◽  
Reduction Mechanisms ◽  
The Creation

Chromium occurs in nature mainly in its trivalent or hexavalent form. Hexavalent chromium Cr(VI) is particularly toxic to humans, animals, and plants. The extensive pollution of groundwaters with Cr(VI) necessitates the complete understanding of natural chromium oxidation and reduction mechanisms, both for assessing the risk of hexavalent chromium formation and for the development of techniques for the reduction and removal of Cr(VI) from contaminated water bodies. In this work, the possibility of hexavalent chromium reduction by discarded or low-cost materials, which contain reducing compounds, is investigated regarding the creation of a compact, pump-and-treat filter for Cr(VI) removal from groundwater.

Use of Illite Clay for In Situ Remediation of137Cs-Contaminated Water Bodies:  Field Demonstration of Reduced Biological Uptake

2006 ◽  
Vol 40 (14) ◽  
pp. 4500-4505 ◽  
Author(s):  
Thomas G. Hinton ◽  
Daniel I. Kaplan ◽  
Anna S. Knox ◽  
Daniel P. Coughlin ◽  
Rebecca V. Nascimento ◽  
...  
Keyword(s):  
Water Bodies ◽  
Contaminated Water ◽  
In Situ Remediation ◽  
Biological Uptake

Isolation and Characterization of Arsenic-Resistant Bacteria from Contaminated Water-Bodies in West Bengal, India

2014 ◽  
Vol 32 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Ramansu Goswami ◽  
Suprabhat Mukherjee ◽  
Vipin Singh Rana ◽  
Dhira Rani Saha ◽  
Rajagopal Raman ◽  
...  
Keyword(s):  
West Bengal ◽  
Water Bodies ◽  
Resistant Bacteria ◽  
Contaminated Water ◽  
Isolation And Characterization ◽  
Arsenic Resistant Bacteria

Aspects of the hematology of fishes caught in contaminated water bodies

2006 ◽  
Vol 1 (2) ◽  
Author(s):  
NM Igboh ◽  
GI Ekeke ◽  
AA Uwakwe ◽  
EN Agomuo ◽  
OA Avuaja
Keyword(s):  
Water Bodies ◽  
Contaminated Water

scholarly journals Reconstruction of the Long-Term Dynamics of Particulate Concentrations and Solid–Liquid Distribution of Radiocesium in Three Severely Contaminated Water Bodies of the Chernobyl Exclusion Zone Based on Current Depth Distribution in Bottom Sediments

Land ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 29
Author(s):  
Alexei Konoplev ◽  
Gennady Laptev ◽  
Yasunori Igarashi ◽  
Hrigoryi Derkach ◽  
Valentin Protsak ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Sediment Cores ◽  
Temporal Trends ◽  
Water Bodies ◽  
Contaminated Water ◽  
Exclusion Zone ◽  
Liquid Distribution ◽  
Diffusional Model ◽  
Solid Liquid

Given the importance of understanding long-term dynamics of radionuclides in the environment in general, and major gaps in the knowledge of 137Cs particulate forms in Chernobyl exclusion zone water bodies, three heavily contaminated water bodies (Lakes Glubokoe, Azbuchin, and Chernobyl NPP Cooling Pond) were studied to reconstruct time changes in particulate concentrations of 137Cs and its apparent distribution coefficient Kd, based on 137Cs depth distributions in bottom sediments. Bottom sediment cores collected from deep-water sites of the above water bodies were sliced into 2 cm layers to obtain 137Cs vertical profile. Assuming negligible sediment mixing and allowing for 137Cs strong binding to sediment, each layer of the core was attributed to a specific year of profile formation. Using this method, temporal trends for particulate 137Cs concentrations in the studied water bodies were derived for the first time and they were generally consistent with the semiempirical diffusional model. Based on the back-calculated particulate 137Cs concentrations, and the available long-term monitoring data for dissolved 137Cs, the dynamics of 137Cs solid–liquid distribution were reconstructed. Importantly, just a single sediment core collected from a lake or pond many years after a nuclear accident seems to be sufficient to retrieve long-term dynamics of contamination.

scholarly journals Microalgae Based Sustainable Bioremediation of Water Contaminated by Pesticides

2021 ◽  
Vol 12 (1) ◽  
pp. 149-169
Keyword(s):  
Review Paper ◽  
Low Cost ◽  
Oxygen Demand ◽  
Crop Productivity ◽  
Water Bodies ◽  
Biofuel Production ◽  
Contaminated Water ◽  
Aquatic Life ◽  
Factors Affecting ◽  
Carbon Dioxide Co2

The use of pesticides in agriculture reduces the loss of crops and increases crop productivity. Agricultural discharge into water bodies increases pesticide toxicity in water. A pesticide, when entered into water bodies, attacks non-targeting species, which disturbs the aquatic life. Because of low-cost taking, high material removal efficiency, low sludgy amount, and generated biomass for economic benefit, biological bioremediation methods are mostly preferred. Algae are used to remove pollutants from the environment or to convert them into harmless forms. Bioremediation by algae is highly preferred as biomass generated is used in biogas and biofuel production. Algae fix carbon dioxide (CO2) and release oxygen (O2) by photosynthesis and increase BOD (biological oxygen demand) in contaminated water. Therefore, it is necessary to reduce the use of pesticides or dispose of them in the best manner. To be on the safer side and make our water bodies less toxic, it is necessary to make efficient water treatment arrangements. This review paper is to discuss everything about pesticides and bioremediation, the use of microalgae and fungi for the treatment of water contaminated by pesticides, and the factors affecting pesticide bioremediation.

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