PSEDOMONAS FLUORESCENS ADSORPTION AND FILTRATION AS AFFECTED BY CALCIUM SULFATE AND CARBONATE IN SAND COLUMNS UNDER SATURATED CONDITION

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ROSTAMI KAMBIZ; MOSADEGHI M.R.; MAHBOUBI A.A.; SAFARI SANJANI A.A.

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Journal: Journal of Water and Soil Science Year:2008 | Volume:12 | Issue:44 Page(s): 97-109

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Title

PSEDOMONAS FLUORESCENS ADSORPTION AND FILTRATION AS AFFECTED BY CALCIUM SULFATE AND CARBONATE IN SAND COLUMNS UNDER SATURATED CONDITION

Author(s)

ROSTAMI KAMBIZ | MOSADEGHI M.R. | MAHBOUBI A.A. | SAFARI SANJANI A.A. | Issue Writer Certificate

Keywords

CALCIUM SULFATEQ3

CALCIUM CARBONATEQ2

BREAKTHROUGH CURVEQ2

PSEUDOMONAS FLUORESCENSQ2

SATURATED FLOW CONDITIONSQ3

FILTRATION COEFFICIENTQ3

Abstract

Transport and filtering of pathogenic bacteria through porous media and groundwater resources are important and' therefore the effect of various factors on bacteria transport and filtering has been given a great attention nowadays. In this study' effects of CALCIUM SULFATE and carbonate on Psedomonas fluorescens filtration and filtering parameters were investigated in saturated sand columns under steady-state flow. The CALCIUM CARBONATE levels included 0' 5' 10 and 20 %w/w and CALCIUM SULFATE levels consisted of 0' 5 and 10 % w/w which were thoroughly mixed with sand (015-0.25 mm). The experiment was considered factorial in completely randomized design with three replicates. The treated sands were poured into pyrex cylinders with length of 20 cm and diameter of 7 cm. Then' steady-state saturated flow with constant flux was applied to the columns. When the steady-state flow was established' the bacteria suspension with concentration of 106 CFU cm-3 (C0) was injected as step input into the columns. The leaching then was continued up to 5 times of pore volume (PV). The effluent concentration of the bacteria (C) was measured at 0.25 PV intervals. Then' the sand columns were divided into 0-5' 5-10' 10-15 and 15-20 cm layers in order to measure the filtered bacteria in each layer. The results showed that the effects of CALCIUM CARBONATE on retaining of the bacteria in the 5-10 and 10-15 cm layers were significant at 1% level. It was significant at 5% for the 15-20 cm layer. The effect of CALCIUM SULFATE was also significant at 5% for the 10-15 cm and 15-20 cm layers. The interactive effects of treatments on bacteria adsorption was significant for the 5-10' 10-15 and 15-20 cm layers. The retained concentration profile and the FILTRATION COEFFICIENT were significantly affected by the treatments' showing higher bacteria adsorption at lower depths and predominance of physical filtering. The results showed the high filtering capacity of carbonate and sulfate minerals which could ultimately reduce bacteria transport in saturated porous media towards groundwater resources.

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APA: Copy

ROSTAMI, KAMBIZ, MOSADEGHI, M.R., MAHBOUBI, A.A., & SAFARI SANJANI, A.A.. (2008). PSEDOMONAS FLUORESCENS ADSORPTION AND FILTRATION AS AFFECTED BY CALCIUM SULFATE AND CARBONATE IN SAND COLUMNS UNDER SATURATED CONDITION. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 12(44), 97-109. SID. https://sid.ir/paper/14910/en

Vancouver: Copy

ROSTAMI KAMBIZ, MOSADEGHI M.R., MAHBOUBI A.A., SAFARI SANJANI A.A.. PSEDOMONAS FLUORESCENS ADSORPTION AND FILTRATION AS AFFECTED BY CALCIUM SULFATE AND CARBONATE IN SAND COLUMNS UNDER SATURATED CONDITION. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2008;12(44):97-109. Available from: https://sid.ir/paper/14910/en

IEEE: Copy

KAMBIZ ROSTAMI, M.R. MOSADEGHI, A.A. MAHBOUBI, and A.A. SAFARI SANJANI, “PSEDOMONAS FLUORESCENS ADSORPTION AND FILTRATION AS AFFECTED BY CALCIUM SULFATE AND CARBONATE IN SAND COLUMNS UNDER SATURATED CONDITION,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 12, no. 44, pp. 97–109, 2008, [Online]. Available: https://sid.ir/paper/14910/en

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