10 articles in this issue
Maya Rahmayanti,Guliston Abdillah,Sri Juari Santosa,Sutarno Sutarno
Humic acid modifying magnetite particles (Mag-HA) were developed for recovery of gold from chloride solution (HAuCl4). The Mag-HA particles were prepared by co-precipitation procedure with Fe(III) and Fe(II) chloride salts, sodium hydroxide, and humic aci... see more
Noor Hindryawati,Aman Sentosa Panggabean,Dirgarini Julia Nurlianti Subagyono,Rinda Anisyah Putri,Prilianda Kusmiaty,Gaanty Pragas Maniam
Degradation of blue dye waste in Sarong Samarinda production using WO3-bleaching earth (BE) has been conducted. Structural and morphological characterization has conducted using X-ray diffraction (XRD), and Scanning electron microscopy-energy dispersive s... see more
Dewi Selvia Fardhyanti,Achmad Chafidz,Bayu Triwibowo,Haniif Prasetiawan,Novia Noor Cahyani,Sinta Andriyani
Rice husk is an agricultural waste which contains 50% cellulose, 25%-30% lignin and 15%-20% silica. It can be used as raw material of bio-oil. Bio-oil is liquid which produced by pyrolysis process. Bio-oil can be produced from the rice husk at 773 and 873... see more
Iman Adipurnama,Ming Chien Yang,Tomasz Ciach,Beata Butruk Raszeja
The means for developing synthetic vascular grafts to replace blood vessels is increasing extensively because of the limited supply of autologous vessels. Synthetic polymers as the alternatives still suffer from restenosis and thrombus formation. Natural ... see more
Retno Ambarwati Sigit Lestari,Wahyudi Budi Sediawan,Sarto Sarto
Sulfur-oxidizing bacterias were isolated then grown on salak fruit seeds forming bio-film. Their performances in sulfide removal were experimentally observed. The salak fruit seeds were then used as packing material in a cylinder. Liquid containing 83 ppm... see more
Daniel Setiyo Nugroho,Cheng Yu Shen,Tzung Han Chou,Nina Hartini,Hsiang Ya Chiu
Dhoni Hartanto,Prima Astuti Handayani,Akhmad Sutrisno,Viona Widya Anugrahani,Asalil Mustain,Ianatul Khoiroh
Isopropyl alcohol is widely used as industrial chemical intermediates and common solvents in households, pharmaceuticals, food, cosmetics, and medical purposes. The high purity of isopropyl alcohol requires special separation from its impurity i.e. water ... see more
Shinta Amelia,Maryudi Maryudi
Textile industry waste contains dyes that are difficult to decompose naturally and cause disruption of ecosystems in water. The colorant that is often used in the textile industry is methylene blue which is a cationic heterocyclic aromatic compound. This ... see more
Toto Rusianto,Murni Yuniwati,Hary Wibowo
Plastic waste can cause serious environmental problems. This can be overcome by various efforts; one of them is by replacing the use of conventional plastic with biodegradable plastic. Biodegradable plastic can be produced from tubers containing starch. T... see more
Ratna Dewi Kusumaningtyas,Muhammad Hafizt Akbar,Dwi Widjanarko
The rapid growth of the population and economy has boosted up the necessity of fuel and energy source. Until now, the world’s dependency on fossil fuel as the primary energy supply is still high. On the other hand, it has been known that the foss... see more