Journal
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
Volume 53, Issue 2, Pages 719-731Publisher
SPRINGER
DOI: 10.1007/s41779-017-0085-z
Keywords
Clinoptiolite; Sedimentation; Polyacrylamide; Leather residues; Brick
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Toxic tannery wastewater(s) (TWW) pose(s) a great risk to the environment. This study explores the potential of mitigating the harmful effects of TWW through sedimentation using clinoptiolite in the presence of various anionic, cationic and non-ionic flocculants with different molecular weights and charge densities followed by encapsulation in a brick structure for stability. Compressive strength (CS), size reduction after firing (SRAF), water absorption (WA) and colouring parameters of bricks were determined. X-Ray diffraction (XRD) and scanning electron microscopy (SEM)-energy dispersive X-ray (EDX) analyses were conducted on brick bodies. Kinetic leaching experiments were conducted for possible heavymetal release from the bricks. Bricks containing 10 wt% leather waste and 5 wt% clinoptiolite sintered at 800 degrees C instead of 920 degrees C possessed similar properties to the standard brick (SB).
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