Photocatalysis is one of the alternative methods for treatment of textile waste. One of the synthetic dyes that is often used in the textile industry is methylene blue dye. The coloring process in textiles uses synthetic ...

Palm oil mills produce two types of waste in producing Crude Palm Oil (CPO), namely solid waste and liquid waste. Solid waste in the form of empty fruit bunches, shells and palm fiber which can be used as boiler fuel. ...

Fresh palm oil mill effluent (POME) is a hot, bad odor, acidic (pH between 4 to 5), which contains high amounts of organic matter, total solids, and high concentrations of BOD and COD. Direct discharge of POME into ...

The synthesis of cobalt oxides by precipitation method have been done. (Co(NO3)2.6H2O and KOH was used as precursors in synthesis. Molar ratio of precursors 1:1 M. Temperature of calcination at 900oC was done to deteminate ...

In this study, the ZnO/Fly ash composite with palm frond extract was synthesized using the precipitation method. Based on XRD, UV-DRS and FTIR characterization. XRD characterization showed that the crystal size of the ...