Phototransformation of Linear Alkylbenzene Sulphonate (LAS) Surfactant Using ZnO-CuO Composite Photocatalyst

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Phototransformation of Linear Alkylbenzene Sulphonate (LAS) Surfactant Using ZnO-CuO Composite Photocatalyst

The aim of this study was to observe the effect of composition ratio of precursor and mass of ZnO-CuO for photodegradation of Linear Alkylbenzene Sulphonate. Material synthesis is done by solid stated process. The ZnO-CuO composite was characterized using DRS-UV and FTIR. The percentage of degradation was obtained from the absorbance value measured using a UV-Vis spectrophotometer. The ZnO-CuO composite photodegradation activity in 2: 1 ratio was 54.71% for 105 minutes irradiation. The degradation percentage of ZnO-CuO composites have higher photocatalytic activity than single ZnO (53.64 %) and CuO (52.21 %) semiconductors in degrading LAS.

SINTESIS SURFAKTAN METIL ESTER SULFONAT DARI PALM OIL METHYL ESTER DAN NATRIUM METABISULFIT DENGAN PENAMBAHAN KATALIS KALSIUM OKSIDA

The most widely used surfactant is an anionic surfactant which is synthesized from petroleum namely Linear Alkylbenzene sulphonate (LABS). Methyl Ester Sulfonate which is currently being developed. Surfactant can produced from palm oil methyl ester via sulfonation sulfonate. When in this research using sodium metabisulphite. The aims of this work is to synthesize Methyl Ester Sulfonate surfactant from Palm Oil Methyl Ester using Sodium Metabisulphite and a catalyst Calcium Oxide. The effects of time and the mole ratio are also investigated. Sulfonation process carried out in 4, 5, 6 hours with mole ratio of 1: 0,5, 1:1, 1: 1,5, temperature of 80° C and with stirring speed of 450 rpm. It haven been found that the surfactant produced has density of (0.89490 g/cm3 - 0.89545 g/cm3), viscosity (2.0323 cP - 2.1329 cP), pH (2,03 - 2,48), surface tension (32.60 mN/m - 33.60 mN/m), interfacial tension (30.45 mN/m - 30.94 mN/m), and the stability emulsion (59.17% - 89, 17%).

PENGARUH PENGGUNAAN PENYALUT BIOBLEND PS/PCL TERHADAP PELEPASAN ZAT AKTIF UREA GRANUL

The most widely used surfactant is an anionic surfactant which is synthesized from petroleum namely Linear Alkylbenzene sulphonate (LABS). Methyl Ester Sulfonate which is currently being developed. Surfactant can produced from palm oil methyl ester via sulfonation sulfonate. When in this research using sodium metabisulphite. The aims of this work is to synthesize Methyl Ester Sulfonate surfactant from Palm Oil Methyl Ester using Sodium Metabisulphite and a catalyst Calcium Oxide. The effects of time and the mole ratio are also investigated. Sulfonation process carried out in 4, 5, 6 hours with mole ratio of 1: 0,5, 1:1, 1: 1,5, temperature of 80° C and with stirring speed of 450 rpm. It haven been found that the surfactant produced has density of (0.89490 g/cm3 - 0.89545 g/cm3), viscosity (2.0323 cP - 2.1329 cP), pH (2,03 - 2,48), surface tension (32.60 mN/m - 33.60 mN/m), interfacial tension (30.45 mN/m - 30.94 mN/m), and the stability emulsion (59.17% - 89, 17%).