Vulnerability of groundwater to iron and manganese contamination in the coastal alluvial plain of a developing Indonesian city
| Autor: | Seiichiro Ioka, Anna Fadliah Rusydi, Mitsuyo Saito, Rizka Maria, Iwan Ridwansyah, Robert M. Delinom, Shin-ichi Onodera |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
General Chemical Engineering
0208 environmental biotechnology General Engineering General Physics and Astronomy chemistry.chemical_element 02 engineering and technology Manganese 010501 environmental sciences Contamination Saline water 01 natural sciences 020801 environmental engineering Alluvial plain Salinity chemistry Environmental chemistry Dissolved organic carbon General Earth and Planetary Sciences Environmental science General Materials Science Dissolution Groundwater 0105 earth and related environmental sciences General Environmental Science |
| Zdroj: | SN Applied Sciences. 3 |
| ISSN: | 2523-3971 2523-3963 |
| Popis: | This paper evaluates environmental conditions responsible for the high concentrations of trace metals in Indonesian coastal groundwater. Indramayu, which has significant potential groundwater resources, but for which limited information is available regarding its vulnerability, is selected as our study area. Results show that Fe2+ and Mn2+ are natural contaminants in the groundwater of the study site. The correlations of trace metals with salinity and redox-sensitive parameters verify that saline water has a significant impact upon the dissolution of Fe and Mn. Furthermore, reductive condition is confirmed to be responsible for Fe and Mn dissolution with a less significant correlation compared to salinity. Moreover, the high concentrations of trace metals are coupled with high dissolved organic carbon (DOC), which indicates that reductive environment may arise because of organic-matter decomposition. Finally, the impact of human activity upon Fe and Mn dissolution is identified at the northern tip of Indramayu, where trace-metal contents are significantly elevated. Further, in the southern part, the groundwater condition is relatively more natural; thus, the impact of human activity upon the presence of Fe and Mn is lesser in this region. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink