Availability of phosphorous on ex-gold mining soil ameliorated with sub-bituminous coal & activation of sub-bituminous coal with NaOH

Teguh Budi Prasetyo, . and ; Amsar Maulana, . and Mimien Harianti, . and Indra Dwipa, . and Irwan Darfis, . and Dewi Rezki, . and Herviyanti Herviyanti, . (2024) Availability of phosphorous on ex-gold mining soil ameliorated with sub-bituminous coal & activation of sub-bituminous coal with NaOH. Malaysian Journal of Soil Science (MJSS) (Malaysia), 29. pp. 29-37. ISSN 1394-7990

Mercury (Hg) contamination of ex-gold mining soils is of particular concern as it affects the availability of nutrients in the soil such as phosphorus (P). The interaction of Hg with P in soil needs to be studied quantitatively through amelioration technology that is expected to control Hg in the soil system. The purpose of this research is to study and analyze the correlation of Hg and P in ex-gold mining soil ameliorated with sub-bituminous coal and the activation of sub-bituminous coal with NaOH. The experimental design used in this study was a completely randomized design (CRD) with three (3) replications. The treatment I (Sub-bituminous coal) and II [activation of Sub-bituminous coal with 10% NaOH) was implemented in the pot with equivalent doses, respectively: (A) 0 [0g 100gˉ¹ soil], (B) 10 [0.5g 100gˉ¹ soil], (C) 20 [1g 100gˉ¹ soil], (D) 30 [1.5g 100gˉ¹ soil], and (E) 40 t haˉ¹ [2.0g 100gˉ¹ soil]. The correlation and equation of linear regression between total Hg with Available P on ex-gold mining soil ameliorated with sub-bituminous coal [r = -0.922** and Hg = -0.206 (PO₄ˉ) + 7.0068; R² = 0.9052] and activation of sub-bituminous coal with 10% NaOH [r = -0.862** and Hg = -0.0265 (PO₄ˉ) + 6.2774; R² = 0.7851]. Amelioration technology on ex-gold mining soil with sub-bituminous coal and activation of sub-bituminous coal with 10% NaOH can reduce the total Hg by 2.50 and 2.84 mg kgˉ¹ and also increase the available P by 11.88 and 76.91 ppm PO₄ˉ respectively, compared to control.

Full text available from: Official URL: https://www.msss.com.my/mjss/Full%20Text/vol29/V29...

Abstract

Mercury (Hg) contamination of ex-gold mining soils is of particular concern as it affects the availability of nutrients in the soil such as phosphorus (P). The interaction of Hg with P in soil needs to be studied quantitatively through amelioration technology that is expected to control Hg in the soil system. The purpose of this research is to study and analyze the correlation of Hg and P in ex-gold mining soil ameliorated with sub-bituminous coal and the activation of sub-bituminous coal with NaOH. The experimental design used in this study was a completely randomized design (CRD) with three (3) replications. The treatment I (Sub-bituminous coal) and II [activation of Sub-bituminous coal with 10% NaOH) was implemented in the pot with equivalent doses, respectively: (A) 0 [0g 100gˉ¹ soil], (B) 10 [0.5g 100gˉ¹ soil], (C) 20 [1g 100gˉ¹ soil], (D) 30 [1.5g 100gˉ¹ soil], and (E) 40 t haˉ¹ [2.0g 100gˉ¹ soil]. The correlation and equation of linear regression between total Hg with Available P on ex-gold mining soil ameliorated with sub-bituminous coal [r = -0.922** and Hg = -0.206 (PO₄ˉ) + 7.0068; R² = 0.9052] and activation of sub-bituminous coal with 10% NaOH [r = -0.862** and Hg = -0.0265 (PO₄ˉ) + 6.2774; R² = 0.7851]. Amelioration technology on ex-gold mining soil with sub-bituminous coal and activation of sub-bituminous coal with 10% NaOH can reduce the total Hg by 2.50 and 2.84 mg kgˉ¹ and also increase the available P by 11.88 and 76.91 ppm PO₄ˉ respectively, compared to control.

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Item Type:	Article
AGROVOC Term:	soil
AGROVOC Term:	phosphorus
AGROVOC Term:	coal
AGROVOC Term:	plant available phosphorus
AGROVOC Term:	activation energy
AGROVOC Term:	pot experimentation
AGROVOC Term:	mercury
AGROVOC Term:	nutrient availability
Geographical Term:	Indonesia
Depositing User:	Mr. Khoirul Asrimi Md Nor
Date Deposited:	21 Jul 2026 14:03
Last Modified:	21 Jul 2026 14:03
URI:	http://webagris.upm.edu.my/id/eprint/4956

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