Abstract
Aluminium-based water treatment sludge (WTS) was investigated for its potential to remove chromium(VI) from simulated wastewater. Batch sorption tests and column tests were carried out using poly aluminium chloride sludge. Results of the batch study showed that chromium sorption decreased with increase in pH for the pH range studied (2.0–12.0). Long-duration column test with an empty bed contact time of 3 h indicated good Cr(VI) removal capacity of WTS as no chromium was present in the effluent for 115 bed volumes, and a sorption capacity of 1.62 mg/g of dry sludge was obtained which was lower than the sorption capacity reported in the literature. In the presence of other metals such as Co, Cu, Hg and Pb, both percentage Cr(VI) removal and sorption capacity was negatively affected in column tests, and Cr(VI) sorption capacity was only 0.96 mg/g of dry sludge.
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Thomas, T.N., Ahammed, M.M. (2020). Removal of Chromium Using Water Treatment Sludge. In: Kalamdhad, A. (eds) Recent Developments in Waste Management . Lecture Notes in Civil Engineering, vol 57. Springer, Singapore. https://doi.org/10.1007/978-981-15-0990-2_23
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DOI: https://doi.org/10.1007/978-981-15-0990-2_23
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