Journal of Chemical Engineering & Process Technology
Open Access
ISSN: 2157-7048
ISSN: 2157-7048
Regina M. Matsapola
South Africa
Research Article
Recovery of Calcium Carbonate from Wastewater Treatment Sludge Using a Flotation Technique
Author(s): Jannie P. Maree, Caliphs M. Zvinowanda, Munyaradzi Mujuru, Regina M. Matsapola, David J. Delport and Wynand J. LouwJannie P. Maree, Caliphs M. Zvinowanda, Munyaradzi Mujuru, Regina M. Matsapola, David J. Delport and Wynand J. Louw
The use of flotation technique for the recovery of calcium carbonate (CaCO3) from wastewater treatment sludge was investigated in this study. The parameters that were investigated included dosage of floating agents (sodium oleate and sunlight dish liquid) and the percentage solids of the slurry. The experiments were performed by floating sieved and un-sieved materials and CaCO3 was determined for both conditions as well as from tailings.
Initial CaCO3 analysis for the bulk material indicated that sieved and un-sieved materials had 63.4% and 32.9% CaCO3 content by weight respectively. The modification of pH was effected by dosing 1g NaCO3 to both 1000 g of sieved and un-sieved materials which was sufficient to raise the pH of the slurry to 9.5. A lower average recovery of 2.33% was observed on un-sieved material after using sodium ole.. View More»
DOI:
10.4172/2157-7048.1000130