Year of research: 2020-2023

Source of funds: Kemenristekdikti

Research on "Intelligent Material alternative sources derived from solid waste combustion PLTU: characterization and mapping its potential in Kalimantan's coal basin" is located at the Kendilo Coal mine, East Kalimantan as the location for sampling and research. This is due to the geological condition of the mine that supports the process of enrichment of sparse soil element is combined between type 1 to 4. With geological conditions that support is expected to produce a much larger REE + Yttrium enrichment compared to previous studies.

Figure 1. Map of geological Kalimantan Island and PLTU distribution in Kalimantan Island

You can access the publication related to the above research theme at the link below:

[1] Rosita, W., Bendiyasa, I., Prime, I. and Anggara, F., 2020. Sequential particle-size and magnetic separation for enrichment of rare-earth elements and yttrium in Indonesia coal fly ash, Journal of Environmental Chemical Engineering, 8 (1), p. 103575.

Year of research: 2019-2021

Source of funds: PT Bukit Asam, TBK.

Research on "Utilization of Fly Ash and Bottom Ash at UPTE, PT. Bukit Asam "includes the mapping and characterization of coal in the PTBA working area, characterization of existing fly ash and bottom ash (FABA) from PLTU PTBA as raw material of cenosphere and Rare Earth Element (REE) as well as the manufacture of geopolymer concrete. In addition, there is also a study of ashing against coal that has the potential to contain high REE and characterization and its REE.

Figure 1. Documentation for sampling research in PT coal field. Bukit Asam

You can access the publication related to the above research theme at the link below:

[1] Hirajima, Tsuyoshi, et al., 2010, Recovery of Cenospheres from Coal Fly Ash Using a Dry Separation Process: Separation Estimation and Potential Application, International Journal of Mineral Processing, vol. 95, No. 1-4, pp. 18 – 24., doi: 10.1016/J. Minpro. 2010.03.004.

[2] Peter, H.T.B.M., et al., 2011, Performance of Dry-Separation Processes in the Recovery of Cenospheres from Fly Ash and Their Implementation in a Recovery Unit, International Journal of Mineral Processing, vol. 98, No. 1-2, pp. 15 – 23., doi: 10.1016/J. Minpro. 2010.09.002.

[3] Anggara, F., et al., 2018, Rare Earth Element and Yttrium Content of Coal in the Banko Coalfield, South Sumatra Basin, Indonesia: Contributions's from Tonstein Layers, International Journal of Coal Geology, vol. 196, pp. 159 – 172., doi: 10.1016/J. Coal. 2018.07.006.

[4] Anggara, F., et al., 2019, characteristics and Genesa enrichment of soil elements sparsely on coal field of estuary of Big Three northern coal, Cape Enim, South Sumatera Basin, Geology Resource Bulletin, vol. 14, No. 3, pp. 198-212.

[5] Fatikhin, Rais, et al., 2019, Synthesis of Dry-Mix of Fly Ash Based Geopolymer, doi: 10.1063/1.5095028.

[6] Adelizar, A S, et al., 2020, Fly Ash and Bottom Ash Utilization as Geopolymer: Correlation on Compressive Strength and Degree of Polymerization Observed Using FTIR, IOP Conference Series: Materials Science and Engineering, vol. 742, pp. 012042., doi: 10.1088/1757-899x/742/1/012042.

Year of research: 2019

Source of funds: Department of Geological Engineering UGM

Research on "The change of high-ranking coal mineralogical to the grafitisation in Laya Water mining, South Sumatera" aims to determine the potential utilization of coal in contact with intrusion. The results of this research are expected to be used as a basis in determining residual coal development as a result of frozen rock intrusion.

Figure 1. Coal-like intrusion affected by grafitization

You can access the publication related to the above research theme at the link below:

[1] Tambaria, T.N., Amijaya, H. and Anggara, F., 2017, Intrusion Effect to Rare Earth Element Enrichment on Coal in Air Laya Area, South Sumatera, International Symposium on Earth Science and Technology.

[2] Maulana, A., Patria, A.A. and Anggara, F., 2019, effect of intrusion on graphite content in coal water mining Laya Mining Area PTBA Tanjung Enim, South Sumatra, Department of Geological Engineering.

Year of research: 2016

Source of funds: Department of Geological Engineering UGM

Permeability is one of the most important factors in the exploration of the CBM. Research on "Cleats system studies and its associated with low-ranking coal permeability" aims to determine the influence of cleats systems on low-ranking coal permeability.

Figure 1. Petrology Cleats (1a) pyrite, (1b) incision, pyrite, (2a) amber, (2b) incision, amber-polishing ppl, (3a) silica, (3b), silica polishing incisions.

You can access the publication related to the above research theme at the link below:

[1] Maulana, T. and Anggara, F., 2016, Relation Cleat system with the permeability of low-ranking coal, at West Banko mine, Muara Enim, South Sumatera, Proceeding National Seminar of the 9th Kebumian role Research of earth science in Community Empowerment, pp. 227-240

Year of research: 2016

Source of funds: Kemenristekdikti

REY's need to rise year after year encourages the discovery of a new source of REY. Research on "The Nanomaterial characterization of Rare Earth Element (REE) in coal in Indonesia as well as the development of its extraction technique as an alternative to new REE sources" aims to determine the concentration of REE + Yttrium (REY) on coal at the research site and can be forwarded until the appropriate extraction method.

Figure 1. Coal outline in Ombilin area, West Sumatera

You can access the publication related to the above research theme at the link below:

[1] Anggara, F., Petrus, H.T.B.M., 2015, Potential Source Of Rare Earth Elements (REE) from Sangatta Coal, Kutai Basin, Indonesia, Proceeding Of 32^nd Annual Meeting Of The Society for Organic Petrology, vol. 32.

[2] Patria, A.A., Anggara, F., 2019, Microfasies and reconstruction of Sawahlunto coal Paleomire, basin of Ombilin, Proceeding National Seminar of the 12th Kebumian, pp. 31-46.