APPLICATION OF ALGAE IN THE TREATMENT OF INDUSTRIAL LIQUID WASTES IN BORG EL-ARAB REGION
Yasmin Ibrahim Eldesouky M. Aboulsoud;
Abstract
This study aimed firstly to evaluate the quality of industrial wastewater in Borg El-Arab city as well as oxidation pond wastewater and to study its impact as irrigation water on soil, plant and groundwater. Secondly to conclude the most effective Egyptian algal taxa, factors and methods to remove some detected violating pollutants, namely some dyes and heavy metals, from aqueous solutions via batch biosorption. Lastly, application of the optimum concluded conditions in the treatment of the violating industrial wastewater samples that were collected from Borg El-Arab region.
About 69 % of industrial wastewater samples that were collected from Borg El-Arab region were violating the guidelines of Egyptian Environment Law by one parameter or more. Also, the oxidation pond water was violating the guidelines and unsuitable for irrigation.
The collected soil samples were greatly polluted with plenty of heavy metals and trace elements as total and DTPA-extractable contents in comparison with the control sample. Metasequoia glyptostroboides was considered as the most efficient accumulator plant taxon. Phosphate content of groundwater samples revealed their contamination with industrial wastewater.
Two Egyptian algal biomasses, namely Gelidium latifolium (Grev.) Bornet et Thuret (a red alga) and Ulva lactuca Linnaeus (a green alga) were used in their raw dried forms to remove four dyes from their aqueous solutions by batch procedure. The optimum biosorption conditions were Solid/Liquid ratio; 1/1000 g/mL, initial dye concentration; 400 mg/L, temperature; 40° C, contact time; 1 hour, pH; 1, 2, 8 and 7 for biosorption of Drimarene yellow CL4R, Drimarene blue K2RL, Congo Red and Malachite Green, respectively. The highest biosorption efficiency reached 125.18, 84.63, 181.1 and 185.36 mg/g for Drimarene yellow CL4R, Drimarene blue K2RL, Congo Red and Malachite Green, respectively using the green algal biomass Ulva lactuca.
Three Egyptian algal biomasses, namely Gelidium latifolium (Grev.) Bornet et Thuret, Ulva lactuca Linnaeus and Colpomenia sinuosa (Mertens et Roth) Derbes et Solier (a brown alga) were used in their raw dried forms to remove Al3+, Fe3+ and Zn2+ from their aqueous solutions. The optimum biosorption conditions were Solid/Liquid ratio; 1/1000 g/mL, initial element concentration; 1000 mg/L, temperature; 40° C, contact time; 1 hour, pH; 4, 3 and 6 for biosorption of Al3+, Fe3+ and Zn2+, respectively. The highest biosorption efficiency reached 63.78, 65.95 and 111.57 mg/g for Al3+, Fe3+ and Zn2+, respectively using the brown algal biomass Colpomenia sinuosa.
Algal biomasses were applied to treat the violating wastewater samples, the removal efficiency reached 80.81, 38.25, 91.79, 59.96, 95.33, 98.54, 27.39, 88.42, 36.59 and 96.98 % for Al, Co, Cr, Cu, Fe, Mn, Mo, Ni, V and Zn, respectively. The decolourization of coloured samples reached 97.46 %.
Key words:
Borg El-Arab city, industrial wastewater, biosorption, algae, biomasses, dyes, heavy metals, water treatment.
About 69 % of industrial wastewater samples that were collected from Borg El-Arab region were violating the guidelines of Egyptian Environment Law by one parameter or more. Also, the oxidation pond water was violating the guidelines and unsuitable for irrigation.
The collected soil samples were greatly polluted with plenty of heavy metals and trace elements as total and DTPA-extractable contents in comparison with the control sample. Metasequoia glyptostroboides was considered as the most efficient accumulator plant taxon. Phosphate content of groundwater samples revealed their contamination with industrial wastewater.
Two Egyptian algal biomasses, namely Gelidium latifolium (Grev.) Bornet et Thuret (a red alga) and Ulva lactuca Linnaeus (a green alga) were used in their raw dried forms to remove four dyes from their aqueous solutions by batch procedure. The optimum biosorption conditions were Solid/Liquid ratio; 1/1000 g/mL, initial dye concentration; 400 mg/L, temperature; 40° C, contact time; 1 hour, pH; 1, 2, 8 and 7 for biosorption of Drimarene yellow CL4R, Drimarene blue K2RL, Congo Red and Malachite Green, respectively. The highest biosorption efficiency reached 125.18, 84.63, 181.1 and 185.36 mg/g for Drimarene yellow CL4R, Drimarene blue K2RL, Congo Red and Malachite Green, respectively using the green algal biomass Ulva lactuca.
Three Egyptian algal biomasses, namely Gelidium latifolium (Grev.) Bornet et Thuret, Ulva lactuca Linnaeus and Colpomenia sinuosa (Mertens et Roth) Derbes et Solier (a brown alga) were used in their raw dried forms to remove Al3+, Fe3+ and Zn2+ from their aqueous solutions. The optimum biosorption conditions were Solid/Liquid ratio; 1/1000 g/mL, initial element concentration; 1000 mg/L, temperature; 40° C, contact time; 1 hour, pH; 4, 3 and 6 for biosorption of Al3+, Fe3+ and Zn2+, respectively. The highest biosorption efficiency reached 63.78, 65.95 and 111.57 mg/g for Al3+, Fe3+ and Zn2+, respectively using the brown algal biomass Colpomenia sinuosa.
Algal biomasses were applied to treat the violating wastewater samples, the removal efficiency reached 80.81, 38.25, 91.79, 59.96, 95.33, 98.54, 27.39, 88.42, 36.59 and 96.98 % for Al, Co, Cr, Cu, Fe, Mn, Mo, Ni, V and Zn, respectively. The decolourization of coloured samples reached 97.46 %.
Key words:
Borg El-Arab city, industrial wastewater, biosorption, algae, biomasses, dyes, heavy metals, water treatment.
Other data
| Title | APPLICATION OF ALGAE IN THE TREATMENT OF INDUSTRIAL LIQUID WASTES IN BORG EL-ARAB REGION | Other Titles | استخدام الطحالب في معالجة المخلفات الصناعية السائلة بمنطقة برج العرب | Authors | Yasmin Ibrahim Eldesouky M. Aboulsoud | Issue Date | 2016 |
Attached Files
| File | Size | Format | |
|---|---|---|---|
| G12261.pdf | 320.87 kB | Adobe PDF | View/Open |
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