Browsing Fakultas Teknik by Author "Purnama, Herry"

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    • Adsorpsi Limbah Tekstil Sintetis dengan Jerami Padi 

      Purnama, Herry; Setiati, S (Gelagar Vol. 15 No. 1 April 2004, 2004-04)
      Selama ini jerami padi belum dimanfaatkan secara optimal, padahal jerami padi mempunyai banyak kegunaan. Salah satwrya adalah sebagai penjerap (adsorbent) zat warna pada limbah tekstil, karena struktur dari jerami padi ...

    • Effects of Time and Temperature of Poly Ether Ether Ketonesulfonation (sPEEK) on The Solubility of sPEEK in Dimethylacetamide 

      Mujiburohman, Muhammad; Hidayati, Nur; Purnama, Herry; Nihayati, Siti R.; Kurniawan, Vendi; Hakim, Muhammad F. (Proceedings of International Conference On Education, Technology and Science 2013, 2013)
      This work aims at investigating the effects of time and temperature of PEEK sulfonation on the solubility of sulfonated PEEK (sPEEK) in the solvent of dimethylacetamide (DMAc), as a part of manufacturing Proton Exchange ...

    • Photocatalytic Decolouration of Reactive Orange 16 (R3R) Dye 

      Purnama, Herry (Gelagar Vol. 15 No. 2 Oktober 2005, 2005-10)
      Photocatalytic decolouration of dyes is a new concern among researchers since it offers an attractive method for decolouration of dyes and breaks them into simple mineral forms. Commonly the method utilises a TiO2 semiconductor ...