Year: 2025
Type: article
Abstract: The highly alkaline nature of red mud, coupled with the presence of heavy metals, represents a significant environmental risk. Phytomining has the potential to facilitate the extraction of heavy metals, including vanadium (V) and chromium (Cr), from red mud. In this study, phytomining employs the use of Cymbopogon citratus and Portulaca grandiflora plants. The objective of this study is to evaluate the capacity of both plants to engage in phytomining and extract valuable metals from red mud. The methodology employed in this study entails the incorporation of stimulants in the form of manure at concentrations of 0%, 5%, and 10%. The study was conducted over a period of 28 days, during which time toxicity testing and the phytomining ability of the two plants were observed. The phytomining capacity of the plants was determined by measuring the concentration of vanadium (V) and chromium (Cr) in the plant extractions using inductively coupled plasma-optical emission spectroscopy (ICP-OES) equipment. The findings indicated that the Cymbopogon citratus and Portulaca grandiflora plants were capable of surviving on a red mud medium with the addition of 10% manure. The highest absorption of V metal was observed in Cymbopogon citratus, with a value of 23.3 mg/kg, when 10% manure and 90% red mud were added. The highest absorption of Cr metal was 18.02 mg/kg by Portulaca grandiflora with the addition of 10% manure and 90% red mud. Therefore, the results demonstrated that the addition of 10% manure enhanced the capacity of plants to absorb metals.
Authors: Irwan Fitranto, Bieby Voijant Tangahu, Andriyan Yulikasari, Mashudi, Harmin Sulistyaning Titah, Moh. Najib Rizal, Faiza Salsabilla, Yeng Ming Lam, Yamin Wang, Hurun In, Mery Maryanawati Soesilo
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7110997035
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