Utilization of silica from indonesian solid wastes as catalyst materials

Kurniawansyah Firman*, D. Istiqomah Amila, J. Malahayati Aisyah, T. B.M.Petrus Himawan, Roesyadi Achmad

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)


Synthesizing materials can be attempted by utilizing alternative sources such as wastes or disposed/by-products of certain activities. In this article, exploration of silica from agricultural waste and from geothermal sludgefor production of silica catalysts, are presented. The first silica catalyst was synthesized from rice husk. The husk was initially heated until silica ashes could be formed. After immersion in acidic solution, impregnation with nickel and molybdenum were conducted to introduce active metal of nickel (Ni) and molybdenum (Mo) in the support structure. The catalyst formed, Ni-Mo/SiO2 was applied to convert crude palm oil into biofuels. The other silica catalyst was obtained from geothermal sludge. After washing, the catalyst was soaked in sulphuric acid solution to form acidic silica solid catalyst. The catalyst was applied in hydrolysis of seaweed-industry solid waste to produce glucose. The catalyst was relatively successful to facilitate 19-20% glucose yield, or up to 21% glucose selectivity from waste material.

Original languageEnglish
Title of host publicationWaste and Biomass Application
EditorsChandra Wahyu Purnomo
PublisherTrans Tech Publications Ltd
Number of pages6
ISBN (Print)9783035716986
Publication statusPublished - 2020
Event2nd Annual Symposium on Solid Waste Refinery, ANSWER 2019 - Yogyakarta, Indonesia
Duration: 13 Nov 201914 Nov 2019

Publication series

NameKey Engineering Materials
Volume849 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795


Conference2nd Annual Symposium on Solid Waste Refinery, ANSWER 2019


  • Biomass
  • Catalyst
  • Geothermal
  • Silica
  • Solid Waste


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