Warman Fatra

Impregnation of CaO from Eggshell Waste with Magnetite as a Solid Catalyst (Fe3O4/CaO) for Transesterification of Palm Oil Off-Grade

Zuchra Helwani, Muliadi Ramli, Edy Saputra et al. · Catalysts · 2020 · 54 citations · Full text

Natural Sciences, Chemical Engineering, Materials Engineering +17

Alternative Briquette Material Made from Palm Stem Biomass Mediated by Glycerol Crude of Biodiesel Byproducts as a Natural Adhesive

Zuchra Helwani, Muliadi Ramli, Asep Rusyana et al. · Processes · 2020 · 25 citations · Full text

Natural Sciences, Forestry, Energy Materials +16

Effect of Alkaline Treatment on the Properties of Oil Palm Empty Fruit Bunch Fiber-reinforced Polypropylene Composite

Warman Fatra, Helena Rouhillahi, Zuchra Helwani et al. · International Journal of Technology · 2016 · 20 citations

Natural Sciences, Materials Engineering, Materials Science +12

Preparation of CaO/Fly ash as a catalyst inhibitor for transesterification process off palm oil in biodiesel production

Zuchra Helwani, Warman Fatra, Edy Saputra et al. · IOP Conference Series Materials Science and Engineering · 2018 · 18 citations · Full text

Natural Sciences, Chemical Engineering, Chemistry +17

Effect of process variables on the calorific value and compressive strength of the briquettes made from high moisture <i>Empty Fruit Bunches</i> (EFB)

Zuchra Helwani, Warman Fatra, Lukman Arifin et al. · IOP Conference Series Materials Science and Engineering · 2018 · 12 citations · Full text

Agriculture, Biosystems Engineering, Food Processing +12