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By using a hydrothermal treatment process, coal fly ash was transferred to a series of synthesized zeolites and characterized XRD and SEM observations. The synthesized zeolites exhibited more enhanced adsorption capacities for metals compared to the raw material as the increased CEC of the synthesized zeolites apparently provides a better adsorptive ability for metals. For the three synthesized zeolite...
Oyster shells wastes resulting from the mariculture presents an imperative disposal problem in the coastal region. In this study, the nitrification efficiency on an aerated biofilter with raw oyster shells (ROS) as the sole buffer agent and the biomass carrier was evaluated. The capability of alkalinity supplied by ROS was found to be about 1050 mg/L, enabling a loading ammonia concentration up to...
The adsorption of fluoride onto a Ce-La binary hydroxide adsorbent, herein referred to as CLH adsorbent, was studied under various pH values, adsorbent dose, contact time, and the presence of major anions. In the pH range of 4 to 8, the fluoride adsorption onto CLH reaches a maximum, then decreases with further increasing of pH. A considerably higher adsorption capacity (77.4-89.5 mg g-1) was maintained...
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