Research

Conference publications

Lena Kämpfner, Thomas R. Rüde, Doni P. E. Putra. 2021. Vulnerability Assessment of a Tropical Cone Karst Area in Gunung Kidul (Java) as a Resource for a Water Supply Improvement in a Changing Climate. Conference presentation at the 48th IAH Congress – Inspiring Groundwater. September 2021 direct download link

Pena-Castellnou, S., Marliyani, G., Reicherter, K. 2019. Preliminary Tectonic Geomorphology of the Opak Fault System, Java (Indonesia). Geophysical Research Abstracts, 21, EGU2019-12307

Pena-Castellnou, S., Marliyani, G., Reicherter, K. 2019. The 27th of May 2006 Yogyakarta Earthquake, Central Java (Indonesia). 7th International Colloquium on Historical Earthquakes & Paleoseismology Studies, Barcelona

Hauck, Lara Amelie; Lottermoser, Bernd G.; Idrus, Arifudin. 2018. Platinum-group element mineral resources of Indonesia. Konferenz/Event: Resource for Future Generations Conference, Vancouver, Canada, RFG 2018, 2018-06-16 - 2018-06-21

Hauck, Lara Amelie; Lottermoser, Bernd G. 2018. Platinum-group metal resources of Indonesia. Abstract volume First International Conference Mines of the Future: 23 - 24 May 2018 / MRE Institute of Mineral Resources Engineering, RWTH Aachen University; Lottermoser BG (editor), Seiten/Artikel-Nr: Poster-09, 89-89

Dissertation topic: Rare earth recycling from NdFeB magnet using molten salt electrolysis

As the demand of rare earth element (REE) increased, it is essential to do recycling process of the REE from REE-containing products, such as NdFeB magnet. This special magnet is usually used in many high-tech application, including electric vehicle, wind turbines, computer and loudspeaker. Performing molten salt electrolysis on this end-of-life magnet allows extraction of the contained REE. However, as the REE only represents about 20-25% of the magnet (high Fe), pretreatment step and process behavior become the challenge. The main object of this research is to study the molten salt electrolysis process of this NdFeB magnet so that the extracted REE is ready to be used as magnet material again.

Dissertation topic: Determination of the groundwater resource of a tropical karst area as a basis for sustainable water supply in the future

The aim of this PhD project is to develop a hydrogeological system understanding for a karst area on the Indonesian island of Java in order to develop a new sustainable concept for the extraction of karst water. The project systematically prepares existing previous knowledge relating to individual aspects and subareas in a database through cooperation with other research groups and thus for the first time provides knowledge for the entire area. The dynamics of the karst water are to be investigated over a period of two years using automated measuring stations and repeated field visit.

Dissertation topic: Paleoseismology and active tectonics of the Yogyakarta area, Java (Indonesia)

This project focuses on earthquake geology of the Opak Fault System which has a clear NE-SW striking topographic expression located in the vicinity of the densely populated city of Yogyakarta (approx. 4 M people). The discrepancy between tectonic morphology and the absence or rare landscape-shaping earthquakes will be studied by neo- and active tectonic studies. The aim is to recognize, map, and characterize the Opak Fault System and evaluate its potential seismic hazard within a multidisciplinary approach: remote sensing, fieldwork (structural geology and paleoseismology), and dating method.

Dissertation topic: Geological controls and characteristics of acid rock drainage in the Kali Kuning mining area, Wetar Island, Indonesia

The PhD research focus on the presence of ARD (acid rock drainage) Kali Kuning copper mining site, Wetar Island, Maluku, Indonesia. This copper deposit is a confirmed volcanogenic massive sulfide (VMS) deposit, contains abundant barite, and hosted by a volcanic breccia, which could to be associated with arc volcanism.
The main purposes of the research are to establish a new simple, rapid and cost-effective field-based test for ARD prediction in Kali Kuning mining site, and to identify the relationship between the geo-environmental signature of VMS deposit and ARD generations at Kali Kuning mining site. A further result will be best practices guidelines for ARD characterisation in the context of on-site environmental decision-making in Indonesian mining.

Dissertation topic: “Carbonate sedimentology in Kepulauan Seribu, Indonesia in the Anthropocene”

Indonesia is part of the Indo-Pacific coral triangle which is known for its reefal diversity. In contrast to the common held view of tropical carbonates as ‘blue water’ system, the carbonate systems in Indonesia are often characterized by moderate to high terrestrial runoff and low salinity, caused by high rainfall rates of the monsoonal climate. We study the effect of these environmental conditions on a coral patch reef complex in the Java Sea, offshore Jakarta Bay. A potential environmental stressor is the ingestion of microplastic by reef corals with potentially detrimental effects on coral growth. Despite this, microplastic accumulation in reef systems remains largely unquantified. We aim to analyze the control of sedimentary processes on the distribution of microplastic in different carbonate depositional environments.

Link of dissertation :
https://publications.rwth-aachen.de/record/816964/files/816964.pdf

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