SORPTION OF CHROMIUM (VI) USING EXCESS MUNICIPAL SLUDGE

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MOHAMMADI F.; HASHEMINEJAD H.; TAEBI A.

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Paper Information

Journal: WATER AND WASTEWATER Year:2014 | Volume:25 | Issue:1 (89) Page(s): 34-43

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Title

SORPTION OF CHROMIUM (VI) USING EXCESS MUNICIPAL SLUDGE

Author(s)

MOHAMMADI F. | HASHEMINEJAD H. | TAEBI A. | Issue Writer Certificate

Keywords

CHROMIUM (VI)Q2

BIOSORPTIONQ2

WASTEWATER TREATMENTQ3

EXCESS ACTIVATED SLUDGEQ2

CHROMIUM REMOVALQ3

BIOSOLIDQ2

Abstract

Removing or decreasing hexavalent Chromium from wastewater to the permitted levels is important due to its non-biodegradation, bioaccumulation, cancer-causing and toxic effects. In this study, BIOSORPTION of Cr(VI) from aqueous solutions by Excess Active Municipal Sludge was investigated as a function of initial Chromium (VI) concentration (in the range of 5-90 mg/l), initial pH (in the range of 2-8), agitation speed (in the range of 50-200 rpm), adsorbent dosage (in the range of 2-10 g/l) and agitation time (in the range of 5-480 min) in a batch system. The optimum conditions were found by full factorial design approach. The results showed that the equilibrium time for adsorbent is 120 minutes. Also, sorption data have a good fitness by Freundlich isotherm model and adsorption kinetic is adopted with pseudo-second order model. In batch studies, at optimum condition (90 mg/l initial concentration, pH 2, agitation speed 200 rpm and adsorbent dosage 4 g/l), the adsorption performance was about 96%; the maximum adsorption capacity was calculated about 41.69 mg of Cr/g of adsorbent. Overall, it can be concluded that Excess Active Municipal Sludge, has a good performance as a biological, biodegradable, abundant and low-cost adsorbent for the removal of Cr (VI) from aqueous solutions.

Cites

REMOVAL OF CHROMIUM (VI) FROM AQUEOUS SOLUTION BY ACTIVATED CARBON MODIFIED WITH CATIONIC SURFACTANT BENZALKONIUM CHLORIDE

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APA: Copy

MOHAMMADI, F., HASHEMINEJAD, H., & TAEBI, A.. (2014). SORPTION OF CHROMIUM (VI) USING EXCESS MUNICIPAL SLUDGE. WATER AND WASTEWATER, 25(1 (89)), 34-43. SID. https://sid.ir/paper/104077/en

Vancouver: Copy

MOHAMMADI F., HASHEMINEJAD H., TAEBI A.. SORPTION OF CHROMIUM (VI) USING EXCESS MUNICIPAL SLUDGE. WATER AND WASTEWATER[Internet]. 2014;25(1 (89)):34-43. Available from: https://sid.ir/paper/104077/en

IEEE: Copy

F. MOHAMMADI, H. HASHEMINEJAD, and A. TAEBI, “SORPTION OF CHROMIUM (VI) USING EXCESS MUNICIPAL SLUDGE,” WATER AND WASTEWATER, vol. 25, no. 1 (89), pp. 34–43, 2014, [Online]. Available: https://sid.ir/paper/104077/en

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