Characterization of Post-Mining Soil and Solid Waste from Silica Sand Purification

Susianti, Bernadetha; Warmadewanthi, Idaa; Tangahu, Bieby Voijant

doi:10.12911/22998993/151145

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…Te very high BD value indicates that this ex-mining soil has lost its function as a good plant growth medium because the soil becomes solid, making it difcult for roots to penetrate [39] and refecting that the ability to transport water has been decreased and diminished [40]. Furthermore, poor porosity indicates that this soil lacks sufcient or balanced macrospore and microspore space, which reduces the rate of water infltration [41] and makes runof more likely [42]. Te relatively rapid permeability will have implications for the easy loss of water from the soil solum, reducing the ability to hold water [43].…”

Section: Initial Characteristics Of Ex-mining Soilmentioning

confidence: 99%

Bioremediation of Ex-Mining Soil with the Biocompost in the Incubation Experiments

Rosa

Sufardi

Syafruddin

et al. 2023

Applied and Environmental Soil Science

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A process called bioremediation can be used to turn abandoned mining sites into useful agricultural land. An alternative to enhancing the quality of the ex-siltstone mining soil so that it can be used again as agricultural land is the application of biocompost fertilizer. This study intends to investigate how biocompost might enhance the ex-siltstone mining soil’s quality in incubation treatments. The composition of biocompost used in this study is ingredient I: (a) cow manure = 50%; (b) chicken manure = 30%; (c) sand = 10%; (d) bacteria (bioactivator) = 10%; ingredient II: ingredient I is mixed with cow manure in a composition ratio of 1 : 2. The ex-mining soils were gathered in the ex-cement mining region of Lhoknga Subdistrict, Aceh Besar District (5.45°N, 95.2°E). Incubation experiments were conducted in incubation pots (approximately 5 kg per pot) that were randomly placed in a greenhouse using a 4 × 4 factorial completely randomized design (CRD) with three replications. The first factor is the ratio of ex-siltstone mining soil : biocompost, which consists of four levels of comparison: control (ex-mining soil not incubated), 1 : 1 (50 : 50), 1 : 2 (33 : 67), and 1 : 3 (25 : 75). The second factor is the incubation period, which has four levels: 0, 2, 4, and 6 weeks with 48 experimental units. Indicators of the impact of biocompost on the physical and chemical quality of ex-siltstone mining soil were examined. The result shows that bioremediation of ex-siltstone mining soil with biocompost application improves the quality of ex-siltstone mining soil by decreasing bulk density and permeability and also increasing porosity, decreasing soil pH from alkaline to neutral, and increasing soil organic C, total N, available P, and total K. The incubation period of ex-siltstone mining soil influences the changes and dynamics of the soil’s chemical properties.

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