Dr. Alvin r. caparanga is recognized of his outstanding scientific research in environmental engineering, particularly on the physical and thermodynamic properties of new or alternative solvent systems (i.e., solvent systems for CO2 and/or H2S capture), which have been reported in international peer-reviewed journals and which have contributed to the data bank of properties. Knowledge of these properties is indispensible in the design of processes and equipment systems, including such applications as CO2 absorption during its capture and sequestration. Moreover, such solvent systems have been demonstrated to improve absorption rate and efficiency and to lower energy requirement during solvent regeneration.