Abstract. In this study, cellulose acetate/polyethylene glycol (CA/PEG) membrane with composition 80/20 was prepared by phase inversion method. Titanium dioxide with different number has been added by using surface coating. Hydrophilicity, morphology, flux permeate and salt rejection of membranes has been studied. The hydrophilicity is determined by FourierTransformed Infra-Red (FTIR) spectra and contact angle analysis. Surface and fractured morphology are identified by using Scanning Electron Microscopy (SEM). The experiment results show that hydrophilicity of CA/PEG membrane increases with the addition and the increasing of TiO2 contents. However, with further increasing of TiO2, hydrophilicity of CPT membrane decreases. The optimum membrane is CA/PEG/TiO2 80/20/1,25 g/L solvent (CPT 3) with flux permeate of 111,82 L.m-2h-1 and salt rejection of 48,30%.
The role of the community is one of the causes of the decline in the quality of drainage water. The decrease in the quality of drainage is related to behavior that is formed based on the characteristics of a person and their environment. The sample in this study is the community from 30 houses directly facing the drainage which is the object of research. The research aims to determine the effect of age, length of stay, and gender on people's behavior in managing household liquid waste and disposing of waste in trash cans. This research was analyzed quantitatively using SPSS, Paired Sample t-test for comparison test. The results of this study showed that the behavior of household wastewater management, age, length of stay, and gender did not have a significant effect. While the behavior of throwing garbage in the trash, only the age factor has a significant effect, while the length of stay and gender factors have no significant effect.
Efforts to realize a sustainable palm oil industry from upstream to downstream encourage companies to implement environmental regulations and corporate social responsibility that are carried out by multiple parties in the palm oil industry sector. This study aims to prove the effect of environmental regulation and corporate social responsibility on environmental performance, as well as to provide a mediating effect of corporate social responsibility on the relationship between environmental regulation and environmental performance. Data collection is done through the sustainability report of each company. Based on the results of testing the hypothesis found that environmental regulations have a positive but not significant effect on environmental performance, environmental regulations have a positive and significant effect on corporate social responsibility, corporate social responsibility has a positive and significant effect on environmental performance, and corporate social responsibility mediates the relationship between environmental regulations with environmental performance in oil palm plantation companies in Indonesia.
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