Characterizations of Some Selected Clay Types for Cost Effective Wastewater TreatmentsPages 418-429
Suresh Aluvihara Abstract:
Water pollution is a significant issue affecting water consumption, including drinking. Factors contributing to water pollution include industrial waste, improper garbage disposal, waste accumulation, and natural phenomena. Water treatment is essential for managing water and maintaining environmental standards. Physical, chemical, and biological methods are used, but chemical reagents and complex systems are common. Recent research has focused on cost-effective earth materials, offering advantages such as affordability, ease of use, health benefits, and abundance. This study analyzed the characteristics of selected natural materials for wastewater treatment, specifically through processes like adsorption, absorption, and filtration. Several earth materials abundant in Sri Lanka, including three different types of clays were chosen for evaluation. The research revealed that all clays contain over 75% iron as major clay minerals, with some exhibiting finer particles for increased porosity and permeability. These raw materials can be used to manufacture wastewater treatment systems for the removal of suspended and dissolved solids, heavy metals, pathogens, oils, and toxic compounds. Their unique chemical compositions make them suitable for catalytic and advanced chemical purposes.
Keywords: Water pollution,
Water treatment,
Clay,
Adsorption,
Absorption,
Filtration
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