Prediction of individual Freundlich isotherms from binary and ternary phenolic compounds mixtures.

Method for simultaneous determination of individual component's adsorption equilibrium parameters for binary and ternary phenolic compounds mixtures was investigated in this research. The Freundlich equilibrium parameters of binary and ternary component of phenolic compounds were determined from one fixed composition of phenolic wastewater. The simulation results obtained from both binary and ternary systems on the basis of ideal adsorbed solution theory were consistent with single component equilibrium data.

Characteristics of landfill leachates in central Taiwan.

Due to the complex nature of landfill leachates, the leachate treatment plants have difficulty to meet the current Taiwan EPA's effluent standards. Three typical types of landfills, closed landfill A, mixed landfill B (disposal of MSW with bottom ashes from MSW incinerators) and direct MSW landfill C, (disposal of MSW only), are investigated in this research in order to have a better understanding of characteristics of leachates. Factors investigated in this research include landfill age, pH, BOD, COD, TS, DS, VS, seasons, metals (Pb, Ca, Cd, Hg, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, and Zn), humic substances (humic acid, fulvic acid, and non-humic substance), aromaticity and toxicity.