Characterisation of bauxite cleaning waste in Tanjungpinang Indonesia

Eka Putra Ramdhani*, Inelda Yulita, Tri Widya Edelwis, D. Permana, L. A. Kadir, Wahab Wahab, Hilfi Pardi, N. A.N. Siregar, Eko Santoso, Didik Prasetyoko

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


The processing of bauxite ore into aluminium produces a large amount of waste materials. Red mud as waste from the alumina industry is a problem that damages the hydrological function of the soil. Red mud can still be utilised according to its composition and characteristics. In this study, red mud originating from Tanjungpinang is characterised using several techniques (Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX), X-ray Diffraction (XRD), and Adsorption desorption nitrogen. XRD characterisation results for all samples tested, namely bmd1, bsg1, bsg2, and bsg3, have relatively uniform phases: boehmite, Gibbsite, Nepheline, Calcite, Hematite, and Quartz. The SEM-EDX test obtained data on the composition of the highest Al content found in bsg3 with a weight of 7.2%. Adsorption desorption nitrogen test results obtained bsg3 has the highest surface area with 62,423 m2/g. With the characteristics of red mud from bauxite washing, this waste material can be utilised in various fields.

Original languageEnglish
Article number012001
JournalIOP Conference Series: Earth and Environmental Science
Issue number1
Publication statusPublished - 2023
Event2nd Maritime Continent Fulcrum International Conference, MaCiFIC 2022 - Tanjungpinang, Virtual, Indonesia
Duration: 27 Sept 202230 Sept 2022


  • bauxite
  • characterisation
  • red mud


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