2022-06-212022-06-212008Alkan, U. vd. (2008). "Effect of sludge age on heavy metal biosorption by selector activated sludge". International Journal of Environment and Pollution, 34(1-4), 400-411.0957-4352https://doi.org/10.1504/IJEP.2008.020806https://www.inderscienceonline.com/doi/abs/10.1504/IJEP.2008.020806http://hdl.handle.net/11452/27342The influence of sludge age on the metal biosorption characteristics of an aerobic selector-activated sludge was investigated. Two bench-scale aerobic-activated sludge systems were operated at sludge ages of 5 days and 15 days for studying biosorption of Cu and Cr(VI). In-vitro batch experiments were performed to compare biosorption characteristics of the sludge samples harvested from the bench-scale systems. Adsorption capacity (k) of the sludge for both of the metals was found to decrease with increasing sludge age from 5 days to 15 days However, percent removals of the metals were variable in relation to sludge age. Although Cr(VI) removal increased from 33% to 68%, Cu removal exhibited a slight decrease from 81% to 74% with increasing sludge age.eninfo:eu-repo/semantics/closedAccessEnvironmental sciences & ecologyActivated sludgeAerobic selectorBiosorptionCopperHeavy metalsHexavalent chromiumSludge ageActivated sludge systemsAdsorption capacitiesAerobic selectorBench-scale systemHexavalent chromiumMetal biosorptionSludge ageSorptionChromium compoundsBacterial extracellular polymersStability-constantsRetention timeRemovalCultureArticle0002608427000292-s2.0-54149084532400411341-4Environmental sciencesActivated Sludge; Heavy Metal; Batch ReactorsActivated sludgeAdsorptionAerobic selector activated sludgeAgeArticleBatch processBiosorptionComplex formationConcentration (parameters)Correlation analysisIsothermParameterSludgeTechniqueWaste water managementChromiumCopperHeavy metal