Judul: Adsorptivitas berbagai perlakuan bentonit terhadap heksaklorobenzena
Abstrak: In this research adsorptivity of bentonite against organochlorine compounds, namely hexachlorobenzene, was studied. Various treatments were given to the bentonite before being used as adsorbent. The treatments to the bentonite were acid and heating. The treatment that provide the best adsorption capacity and efficiency was given by heating treatment at 600 °C and followed by acid treatment of 30% H2SO4. The optimum adsorption time was obtained at 6 hours with the weight of adsorbent 0.5 g. The study of the adsorption isotherm model showed that the adsorption hexachlorobenzene using bentonite adsorbent followed the Freundlich isotherm. Adsorption of hexachlorobenzene using bentonite showed better capacity and efficiency of adsorption than using commercial activated carbon.
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Judul: Adsorptivitas kaolin dan bentonit teraktivasi terhadap heksakloroetana
Abstrak: MAIRED SAFDI DARMA. Activated Kaolinite and Bentonite Adsorptivities for Hexachloroethane. Supervised by KOMAR SUTRIAH and HENNY PURWANINGSIH. Kaolinite and bentonite can be used as adsorbent for pesticides, such as hexachloroethane (HCE). Kaolinite is a mass of clay materials with low content of irons. The chemical composition of kaolinite is hydrous aluminum silicate (2H2O·Al2O3·2SiO2). Bentonite contains 85% montmorillonite with the chemical composition of Al2O3·4SiO2·xH2O. This research was aimed to determine the adsorptivity of activated bentonite and kaolinite absorptivity toward HCE. Kaolinite and bentonite was activated using 30% sulfuric acid in 90 minutes. The result showed that optimum adsorption time for kaolinite and bentonite was 6 and 4 hours, respectively. Kaolinite was better in HCE adsorption with adsorption capacity of 8680.07 mg/g and efficiency value of 89.51% as compared to those of bentonite that was 8662.71 mg/g and efficiency value of 90.61%. Based on this research, HCE adsorption onto kaolinite and bentonite followed Freundlich isotherms.
Keyword: Kaolinite and bentonite, Bentonite andsorption, Freundlich isotherms, Bogor Agricultural University, Institut Pertanian Bogor, IPB

Judul: Pengembangan distribusi ILOS multimedia (ILOSmedia)
Abstrak: The development of open source softwares is still going rapidly nowadays, including open source operating systems for desktop computer, netbook, tablet PC, and smartphone. The open source operating systems have considerable contribution to open source software. Linux is an open source operating system that continues to grow since 1991. The characteristics in general Linux are free, can be distributed freely, and free to make changes in it. Linux in its development is divided into several distributions. Each distribution is made as a specific goal so that the operating system can focus on running the desired functions, such as multimedia, networking, education, etc. The objective of of this research is to develop and evaluate the ILOS distribution for multimedia by providing multimedia of open source packages. ILOSmedia uses Ubuntu10.10 and Remastersys as a tool to remaster. ILOSmedia is developed by installing multimedia packages that have been obtained based on the results of questionnaires from 30 respondents from three communities, which are KPLI Bogor, Linux.com forums, and Kaskus.us forums. ILOSmedia also uses the Realtime kernel as kernal Mutimedia. ILOSmedia testing is performed by 11 students of Computer Science who are members of FOKERZ community. The testing process is performed by executing ILOSmedia via live-cd and filled in a questionnaire. The test result shows that ILOSmedia has hardware compatibility on notebook and PC with good performance. As much as 72.727% of respondents believe that the size of the installer ILOSmedia of 1.34 GB and a minimum 10GB hard drive is normal. ILOSmedia has multimedia packages complete with the percentage completeness according to respondents is 45.455% are very complete and 54.545% are complete. Boot speed ILOSmedia have an average of 28.87 seconds and 90.91% of respondents consider that ILOSmedia have a desktop environment that is easy navigation
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