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The Cd biosorption on the dried sewage sludge biomass were experimentally evaluated and mathematically modeled at different pH values. The potentiometric titration of the biomass was well fitted by the four-site model, which consists of three-negative and one-positive sites. The main functional groups were identified through the FTIR study. The pH edge study showed that both the carboxyl and phosphonate...
Four types of waste sludge were collected from a drinking water treatment plant (waterworks sludge; WS), sewage treatment plant (sewage sludge; SS), anaerobic digestion (digested sludge; DS) and landfill site (landfill sludge; LS). These sludges were evaluated as biosorbents for the removal of Reactive Orange 16 (RO 16). The maximum sorption capacities of the four waste sludges estimated using the...
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