Browsing by Author "Syaiful, Bahri"

Now showing 1 - 3 of 3
  • No Thumbnail Available
    Item
    Characterization of modified Cengar natural clay
    (2014-11-09) Muhdarina; A.Wahab, Mohammad; Syaiful, Bahri
    Natural clay from Desa Cengar in Riau Province has been taken as an experimental focus. The natural clay which consist of kaolinite, muscovite and quartz were modified in chloride acid, acetic acid, and salts of ammonium chloride and ammonium acetic, exactly in 1 molar aqueous solution by mixing it there, respectively. The modified clay, then, were characterized the physicochemical is change of mineral identities, chemical composition, Si/Al ratio, exchangeable cation capacity and specific surface area. The modifying processes don’t change their mineral content and Si/Al ratio, but some of Ca and Mg cations have been exposure from surfaces of natural clay, while the change of specific surface area of the modified clay have been varied. Ammonium chloride salt modifier with the highest decationization action and the other one, ammonium acetic salt have increased the specific surface area of natural clay. Keywords: Cengar natural clay, physicochemical, modifying process, decationization
  • No Thumbnail Available
    Item
    Indonesia Bioenergy Future Prospective: Status, Challenge And Opportunity
    (2014-11-09) Syaiful, Bahri; Muhdarina
    It was realised that the World energy consumptions tend to increase whilist it supplies continuously decreases. Fossil fuel as main fuel resources have trend declining. So an alternative energy resources is inevitably needed for substitution. Bioenergy is one of renewable energy r-esources have a potential prospect. In recent day fossil fuel resorces were still powerful but not for future. There is a huge number of renewable energy resources available around the world, as well as in lndonesia. Indonesia is having a potential abundance of renewable energy resources, such as, solar, wind, water, tide, wave, biomass etc., which is scill underdevelopped. Indonesia bioenergy potential need to have a serious attention and exploitation to become a part of substitution of world energy demand. Facing this situation lndonesia should have a strong strategy and effort to coup-up-with this challenge. Indonesia roadmap for renewable energy research strategy should have established. There were a lots of things should be provided as a consequences such as research infrastructure. research team and budget, manufacture and businesses of bioenergy, business industry and marketing.To be part of world bioenergy community, lndonesia has an opportunity become a key nation to play role as a bioenergy potential for future due to its potential resources. Key word; bioenergy, nation potential, renewable energy
  • No Thumbnail Available
    Item
    Isoterm Adsorpsi Cobal T(Ii) Dari Media Air Oleh Lempung Alam Cengar Secara Batch
    (2014-11-09) Muhdarina; Syaiful, Bahri
    Efektitas suatu adsorben dinilai dari kemampuannya untuk menjerap adsorbat ke atas permukaannya, Situs adsorpsi Permukaan adsorben disiapkan melalui impregnasi lempung alam Cengar ke dalam larutan 0, I molar garam amonium asetat Dan klorida Serangkaian uji adsorpsi dijalankan sebagai fungsi waktu kontak, konsentrasi adsorbat dan ph larutan di dalarn System batch. Kemampuan adsorpsi Cobalt(ll) oleh lempung alam Cengar dipelajari melalui model isotenn Freundlich, Lengmuir dan Dubinin-Raduskevich, Kation Cobalt(II) lebih banyak terjerap pada situs permukaan lempung yang Diimpregnasi di dalam larutan amonium asetat. Proses adsorpsi terjadi selarna 120 detik dan umumnya berlangsung pada PH 7. Adsorpsi kation cobait(II) di permukaan lempung Cengar mengikuti model isotenn Freundlich dan Langmuir . Kekuatan ikatan antara kation logam dengan situs adsorpsi permukaan lempung sesuai dengan gaya coulomb. Kata Kunci : Lempung alam Cengar, impregnasi, garam amonium, isoterm,Coulomb