Soil burial biodegradation studies of palm oil-based UV-curable films

The palm oil-based ultraviolet (uv)-curable films were subjected to an outdoor soil burial test to investigate the biodegradation under natural environment. The films were burial in the soil experiment plot at the Nuclear Malaysia’s Dengkil complex. The uv-curable films were synthesized from the epoxidized palm oil acrylated (EPOLA) resin and the polyurethane palm oil (POBUA) resin, respectively. Biodegradation tests are more specific to burial film in soil experiments for 12 months under natural conditions. The biodegradability of palm oil resin based uv-curable films were investigated and compared with the petrochemical resin based film. The films properties were compared with respect to properties of the thermal characteristic, the crystallinity, the morphology and the weight loss which are analyzed using the thermogravimetric analysis (TGA), the differential scanning calorimetry (DSC), the scanning electron microscope (SEM), an optical microscope and the weight loss of film calculation. These findings suggested that the palm oil-based uv-curable films show quite satisfactory biodegradation levels

Adsorption Studies of Synthetic Batik Dye Using Granular Activated Carbon in Continuous System

From this experiment, activated carbon as the adsorbent which from coconut shell is taken from industry. As well as methylene blue as the adsorbate. Dye will be flowed to the packed bed continuously. Two parameters will be concerned in this experiment which is initial concentration and time. In order to determine how this parameters will affect the adsorption process, so the percentage of loss concentration of dye will be determined. What will be expected is the higher initial concentration, the higher the adsorption capacity. Similar to time parameter, the longer time it takes, the percentage of concentration loss will be increase. So, from the data,the maximum percent removal of methylene blue is 87.7% for 40 ppm MB concentration, and adsorption start to constant after 3 hour contact tim