Investigation of sulfidic natural water in Sebau Lombok Island to remove dissolved copper (Cu2+) in acid mine drainage

Hadi, Surya; Asnawati, D.; Kamali, Siti Raudhatul; Zulkarnaen, Z.; Syaifuddin, S.; Hizmi, S.

doi:10.1063/1.5064080

Cited by 1 publication

(2 citation statements)

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“…CO 2 emission is controlled by carbon source availability (organic matter), microbe activity, and soil characteristics (mainly moisture content, pH, and redox potential) [112,113]. The emission of CH 4 is correlated with physical properties of soil associated with soil-water movement [6]. Methanogenesis, the process responsible for CH 4 production, occurs when 70-80% of the pore spaces are filled with water.…”

Section: Emerging Ghg Emission Issuesmentioning

confidence: 99%

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Coastal Acid-Sulfate Soils of Kalimantan, Indonesia, for Food Security: Characteristics, Management, and Future Directions

Sulaeman,

Maftuáh,

Noor

et al. 2024

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Coastal acid-sulfate soils are crucial for producing crops and thus, for food security. However, over time, these soil resources experience degradation, leading to higher agro-input, lower yields, and environmental hazards that finally threaten food security. The optimal use of this fragile resource is only attained by implementing vigorous integrated water–soil–crop management technologies amid the climate change impact. This study aimed to review the distribution, properties, use, and management of acid-sulfate soils in Kalimantan, Indonesia. Acid-sulfate soils cover about 3.5 Mha of the coastal area in Kalimantan and have high acidity, high-risk iron and aluminum toxicity, and low fertility, requiring precise water management, amelioration and fertilizer application, crop variety selection, and rice cultivation technologies. Lime, biochar, organic fertilizer, compost, ash, and fly ash are ameliorants that raise pH, reduce iron and aluminum toxicity, and improve crop yield. Rice cultivation has developed from traditional to modern but needs re-designing to fit local conditions. Depending on the soil nutrient status, rice cultivation requires 80–200 kg ha−1 of urea, 50–150 kg ha−1 of SP36, 50–150 kg ha−1 of KCl, and 125–400 kg ha−1 of NPK compound fertilizer, but is affected by CH4 and CO2 emissions. Good water management impacts the effective implementation of amelioration and fertilizer application technologies. The remaining challenges and future directions for water management, amelioration, fertilizer application, crop varieties, cultivation techniques, land use optimization, climate change adaptation and mitigation, technology adoption and implementation, and resource conservation are outlined. Acid-sulfate soils remain a resource capital that supports food security regionally and nationally in Indonesia.

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Section: Emerging Ghg Emission Issuesmentioning

confidence: 99%

“…During rice cultivation, in particular, these soils emit CH 4 under reduced soil conditions (Eh < −250 mV) and CO 2 under oxidized conditions. Tidal type influences CH 4 and N 2 O emissions [6], while rice variety controls CH 4 emissions [7].…”

Section: Introductionmentioning

confidence: 99%