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All Journal INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY
Azrina Abd Aziz
Electrical and Electronics Engineering Department, Universiti Teknologi PETRONAS, Seri Iskandar, 32610, Malaysia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Energy Environmental Science

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EFFECT OF RAINFALL ON THE CHEMICAL COMPOSITION OF RAINWATER IN MONITORING ACID DEPOSITION IN GREATER BANDUNG Dandy Rievaldo; Indra Chandra; Wiwiek Setyawati; Asri Indrawati; Dyah Aries Tanti; Ardiansyah Ramadhan; Lutfhi Rizqi Mubarok; Tazlila Rahmi Rasyid; Azrina Abd Aziz; Zainal Arid Burhanudin
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 6, NUMBER 1, APRIL 2023
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v6i1.14051

Abstract

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).
EFFECT OF RAINFALL ON THE CHEMICAL COMPOSITION OF RAINWATER IN MONITORING ACID DEPOSITION IN GREATER BANDUNG Dandy Rievaldo; Indra Chandra; Wiwiek Setyawati; Asri Indrawati; Dyah Aries Tanti; Ardiansyah Ramadhan; Lutfhi Rizqi Mubarok; Tazlila Rahmi Rasyid; Azrina Abd Aziz; Zainal Arid Burhanudin
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 6, NUMBER 1, APRIL 2023
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v6i1.14051

Abstract

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).
IMPROVED DYNAMIC BOTANICAL AIR PURIFIER WITH LIGHT EFFECT FOR REDUCING CO2 CONCENTRATION IN CHAMBER Carolina Dwi Sundari; Muhammad Fajri Hadi Syahputra; Lulu Millatina Rachmawati; Andhika Jalasena; Nabil Ananta Hasmul; Indra Chandra; Rahmat Awaludin Salam; Yeni Octaviani; Zahwa Rizzi Ani; Sefani Fitria Suyatna; Azrina Abd Aziz; Zainal Arif Burhanudin
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 7, NUMBER 1, APRIL 2024
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v7i1.17442

Abstract

Aims: This study aimed to investigate the effectiveness of the DBAP in reducing CO2 levels and improving indoor air quality. It also explores the impact of adding blue light to enhance photosynthesis. Additionally, the study examines the ability of the DBAP's HEPA filter to reduce PM2.5 concentration. Methodology and results: The methodology used in this study involved testing the reduction of CO2 levels in plants using blue light as an enhancement. The researchers also developed a Dynamic Botanic Air Purifier (DBAP) that incorporated activated carbon and a fan as an active filter to improve CO2 reduction. The study measured the reduction level of CO2 in the plants with blue light enhancement, resulting in a 40% reduction. Subsequently, after adding the active filter to the plants, the CO2 reduction improved by an additional 11% compared to without the active filter. Additionally, the study found that the HEPA filter within the active filter effectively reduced the concentration of PM2.5 to 71.6%. Conclusion, significance and impact study: In conclusion, this study highlights the significance of addressing poor indoor air quality and its potential impact on occupant health and well-being. Developing the Dynamic Botanic Air Purifier (DBAP), incorporating plants, activated carbon, a fan, and blue light enhancement, offers a promising solution for improving indoor air quality and preventing Sick Building Syndrome (SBS). The findings of this study have the potential to inform the development of effective strategies and technologies aimed at creating healthier indoor environments, thus positively impacting public health and overall indoor air quality.
Co-Authors Andhika Jalasena Ardiansyah Ramadhan Asri Indrawati Carolina Dwi Sundari Dandy Rievaldo Dyah Aries Tanti Indra Chandra Lulu Millatina Rachmawati Lutfhi Rizqi Mubarok Muhammad Fajri Hadi Syahputra Nabil Ananta Hasmul Rahmat Awaludin Salam Sefani Fitria Suyatna Tazlila Rahmi Rasyid Wiwiek Setyawati Yeni Octaviani Zahwa Rizzi Ani Zainal Arid Burhanudin Zainal Arif Burhanudin