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Kinetics of lead phytostabilization in post-gold mining soils: Synergistic effects of dolomite and organic amendments on Ipomoea aquatica and Amaranthus caudatus

Journal of Degraded and Mining Lands Management · Vol. 13 No. 4 (2026) · pp. 11405–11412

DOI
10.15243/jdmlm.2026.134.11405
ISSN
2502-2458, 2339-076X
Published
2026-10-01
Publisher
Brawijaya University
Language
eng
License
creativecommons.org/licenses/by-nc/4.0

Abstract

Ecological damage in tropical post-gold-mining areas in Kuantan Singingi Regency, Riau Province, Indonesia is a major concern, with very low pH and high lead (Pb) bioavailability. Therefore, this study aimed to investigate the synergistic effect of dolomite and organic amendments on the phytostabilization potential of Ipomoea aquatica and Amaranthus caudatus under contaminated substrates from Benai, Indonesia. A 28-day mesocosm experiment tested the effectiveness of soil conditioners in immobilizing metals and determining plant uptake kinetics. Applying amendments effectively neutralized soil acidity and optimized the cation exchange capacity (15.01-20.84 cmol/kg), providing favorable rhizosphere conditions for soil stabilization. Pb removal efficiency was high in both species, with a maximum efficiency of 53.51% for Ipomoea aquatica and 53.05% for Amaranthus caudatus by Day 21. Kinetic modeling showed that Amaranthus caudatus reached maximum accumulation earlier (Day 7) than Ipomoea aquatica (Day 14). Moreover, a bioconcentration factor of 0.67–0.69 and a Translocation Factor <1.0 indicated that vertical metal transfer was limited due to uptake by root systems. A biological approach to internal toxicity management was observed, as no significant growth dilution effect was identified by Day 28. Ipomoea aquatica and Amaranthus caudatus are considered good phytostabilizers and candidate pioneer species for large-scale reclamation because they can rapidly immobilize metals and restore ecological buffering with dolomite addition.

Keywords

Collaboration network of the authors

18 authors · 46 co-authorship links

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Co-authorOrganisationJoint articles
Bambang YuliantoAffiliation unknown1
Agus SabdonoDiponegoro University1
OCKY KARNA RADJASAAffiliation unknown1
Prastyo Abi WidyanantoAffiliation unknown1
Sakti Imam MuchlissinAffiliation unknown1
Rizky PurnamaAffiliation unknown1
Amati Eltriman HuluAffiliation unknown1
Bau ToknokAffiliation unknown1
Madina Dwi PanuntunAffiliation unknown1
Istiqomah Shariati ZamaniAffiliation unknown1
Agamuthu PariatambyAffiliation unknown1
Mehran Sanam BhattiAffiliation unknown1
Norkhairah AnuarAffiliation unknown1
Norkhairiyah AnuarAffiliation unknown1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) http://jdmlm.ub.ac.id/index.php/jdmlm/oai, first harvested 9 Nov 2026, last seen 9 Nov 2026.
Original metadata (oai_dc) 
<oai_dc:dc xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/  http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">Kinetics of lead phytostabilization in post-gold mining soils: Synergistic effects of dolomite and organic amendments on Ipomoea aquatica and Amaranthus caudatus </dc:title>
	<dc:creator>Taslapratama, Irwan</dc:creator>
	<dc:creator>Aryanti, Ervina</dc:creator>
	<dc:creator>Hasibuan, Dwi Kartika Asih</dc:creator>
	<dc:creator>Hamid, Fauziah Shahul</dc:creator>
	<dc:subject xml:lang="en-US">Amaranthus caudatus</dc:subject>
	<dc:subject xml:lang="en-US">gold mine tailings</dc:subject>
	<dc:subject xml:lang="en-US">Ipomoea aquatica</dc:subject>
	<dc:subject xml:lang="en-US">lead immobilization</dc:subject>
	<dc:subject xml:lang="en-US">phytostabilization kinetics</dc:subject>
	<dc:description xml:lang="en-US">Ecological damage in tropical post-gold-mining areas in Kuantan Singingi Regency, Riau Province, Indonesia is a major concern, with very low pH and high lead (Pb) bioavailability. Therefore, this study aimed to investigate the synergistic effect of dolomite and organic amendments on the phytostabilization potential of Ipomoea aquatica and Amaranthus caudatus under contaminated substrates from Benai, Indonesia. A 28-day mesocosm experiment tested the effectiveness of soil conditioners in immobilizing metals and determining plant uptake kinetics. Applying amendments effectively neutralized soil acidity and optimized the cation exchange capacity (15.01-20.84 cmol/kg), providing favorable rhizosphere conditions for soil stabilization. Pb removal efficiency was high in both species, with a maximum efficiency of 53.51% for Ipomoea aquatica and 53.05% for Amaranthus caudatus by Day 21. Kinetic modeling showed that Amaranthus caudatus reached maximum accumulation earlier (Day 7) than Ipomoea aquatica (Day 14). Moreover, a bioconcentration factor of 0.67–0.69 and a Translocation Factor &amp;lt;1.0 indicated that vertical metal transfer was limited due to uptake by root systems. A biological approach to internal toxicity management was observed, as no significant growth dilution effect was identified by Day 28. Ipomoea aquatica and Amaranthus caudatus are considered good phytostabilizers and candidate pioneer species for large-scale reclamation because they can rapidly immobilize metals and restore ecological buffering with dolomite addition.</dc:description>
	<dc:publisher xml:lang="en-US">Brawijaya University</dc:publisher>
	<dc:date>2026-10-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://jdmlm.ub.ac.id/index.php/jdmlm/article/view/18035</dc:identifier>
	<dc:identifier>10.15243/jdmlm.2026.134.11405</dc:identifier>
	<dc:source xml:lang="en-US">Journal of Degraded and Mining Lands Management; Vol. 13 No. 4 (2026); 11405–11412</dc:source>
	<dc:source>2502-2458</dc:source>
	<dc:source>2339-076X</dc:source>
	<dc:source>10.15243/jdmlm.2026.134</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://jdmlm.ub.ac.id/index.php/jdmlm/article/view/18035/2185</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2026 Journal of Degraded and Mining Lands Management</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-nc/4.0</dc:rights>
</oai_dc:dc>