Salmariza Sy., Intan Lestari, Desy Kurniawati, Harmiwati, Hermansyah Aziz, Zulkharnain Chaidir, Rahmiana Zein
Characterization of waste activated sludge of crumb rubber industry (CRI-WAS) αs adsorbent of Cd(II) from aqueous solution had been done. The sludge is discarded as waste from wastewater treatment processing, and expected to be an economical adsorbent for metal ion remediation from water and wastewater. The FTIR, XRF and SEM-EDX analysis were conducted to characterize the CRI-WAS. Batch adsorption experiments were carried out to investigate the effects of pH solution, dosage of adsorbent, and contact time. The results showed that Adsorbent developed from waste activated sludge of crumb rubber industry (CRI-WAS) containing high silica and alumina and also has an abundant functional groups. The optimum adsorption of Cd(II) was found at pH 5, dose 0.5 g, and contact time 210 minute with the maximum adsorption capacity was 30.38 mg/g.
Institute for Research and Standardization of Industry, Padang, Indonesia; Department of Chemistry, Faculty of Science and Technology, Jambi University, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padang State University, Indonesia; Department Chemical Engineering of Natural Product, Polytechnic ATI Padang, Indonesia; Laboratory of Analytical Environmental Chemistry, Department of Chemistry, Andalas University, Faculty of Mathematics and Natural Sciences, Indonesia
