Optimization biogas management as alternative energy from communal scale dairy farm

Ruhiyat, Ratnaningsih; Siami, Lailatus

doi:10.1088/1755-1315/106/1/012115

Cited by 1 publication

(1 citation statement)

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“…For example, high concentrations of SO2 and NOx were observed in Surabaya in 2015, primarily from industrial emissions (Handriyono & Kusuma, 2017). Methane gas that generated from dairy farm activities, as one pollutant in atmosphere, could be managed into biogas as an alternative energy, like studied by Ruhiyat and Siami (2018). Additionally, emissions from mud volcanoes have been found to contribute to acid rain, with gas and fluid content emissions ranging from 0.06 to 67.6 mol% methane gas and from 0.21 to 79.9 mol% CO2 in 11 locations of Kradenan, Central Java, and Sidoarjo, East Java.…”

Section: Introductionmentioning

confidence: 99%

Effect of Rainfall on the Chemical Composition of Rainwater in Monitoring Acid Deposition in Greater Bandung

Rievaldo

Chandra

Setyawati

et al. 2023

indones. j. urban. environ. technol.

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Aim: The study aimed to investigate the impact of rainwater on the acidity levelsto monitor acid deposition and identify sources of pollutant that affect the acidity concentrations of rainwater. Methodology and Results: One unit of rainwater sampler in each location was employed, andsamples were taken to the National Research and Innovation Agency laboratory (BRIN) for analysis of rainwater quality including acidity/pH degree, conductivity, and ion concentrations. The results show that high rainfall intensity (>300 mm/month) in April and December 2019 led to a decrease in electrical conductivity (<10 mS/cm) and ion compounds (>200 μmol/L) of rainwater, likely due to the dissolution/washing process of anions in the air during the rainy season and acid and alkaline neutralization in the dry season. The most identified chemical compounds were ammonium (NH4+), sulfate (SO42-), nitrate (NO3-), and salt (NaCl). Conclusion, significance, and impact study: Based on back-trajectory projections, the decline in rainwater quality was attributed to both local emissions (transportation, industry, agriculture, and waste burning) and long-range sources (earth crust, oceans, coastlines, marine activities, and anthropogenic and forest fires in the Australian territory).

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Section: Introductionmentioning

confidence: 99%