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Photocatalytic of anionic dyes on Congo red with M2+/Al (M2+=Ni, Mg, and Zn) layered double hydroxide intercalated polyoxometalate Hanifah, Yulizah; Mohadi, Risfidian; Mardianto; Nur Ahmad; Suheryanto; Lesbani, Aldes
Communications in Science and Technology Vol 8 No 1 (2023)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.8.1.2023.1170

Abstract

The modification catalysts of layered double hydroxide (LDH) with polyoxometalate based on Keggin type were prepared and characterized using X-Ray, FTIR, and SEM to confirm the layered double hydroxide structure. Intercalation was successfully synthesized and showed a heterogeneous aggregate resulted from SEM analysis. The degradation parameters of LDH pristine and LDH composite were determined by observing a number of factors such as pH, catalyst weight, and degradation time. The modification material resulted by preparation material LDH and polyoxometalate (POM) successfully resulted in the lower band gap value compared to material pristine LDH allowing LDH polyoxometalate as photocatalysts to show good photocatalytic activities. The NiAl-SiW12O40 material had the highest percentage of degradation removing Congo Red up to 86% degradation when compared to another composite material, yet it was still significantly better than LDH pristine. The result showed that the LDH composite presented excellent photocatalytic activity in reducing Congo Red.
Preliminary Study on the Measurement of Cadmium Levels in Scavenger Hair at Sukawinatan Landfill Palembang Panca Putri, Yunita; Irfannuddin; Daniel Saputra; Suheryanto
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 21 No. 2 (2024): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v21i2.17058

Abstract

Cadmium (Cd) is a toxic heavy metal with the potential to contaminate the environment, particularly in landfill sites using open dumping systems, such as the Sukawinatan Landfill in Palembang. This study aims to measure Cd levels in scavengers’ hair as an indicator of heavy metal exposure. A cross-sectional study design was conducted in January 2024, with hair samples collected from five respondents using purposive sampling techniques. Cd levels were measured using the Atomic Absorption Spectrophotometry (AAS) method. The results showed that Cd levels in the scavengers' hair ranged from 0.31 to 0.99 ppm, exceeding the normal limit set which is <0.10 ppm. The duration of work as a scavenger was identified as the dominant factor influencing Cd levels, although anomalies were observed in younger scavengers with high exposure intensity. These findings suggest that the working environment at the landfill significantly contributes to the accumulation of Cd in the body. This study provides preliminary insights into the health risks faced by scavengers at the Sukawinatan Landfill, which can serve as a basis for developing policies and mitigation measures to improve scavengers' occupational health and safety.
Distribution of heavy metals in Gasing River, South Sumatra, Indonesia Izromaita; Ibrahim, Eddy; Suheryanto; Wildayana, Elisa
Journal of Degraded and Mining Lands Management Vol. 12 No. 2 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.122.7313

Abstract

The environment consists of land, the earth's atmosphere, and air. Air quality is a measure of air conditions relative to the needs of one or more biotic species. The results of the air quality analysis obtained cloudy water at sampling points 1-5, parameters below class II water quality standards are found in pH parameter at points 6-15, DO parameter at all points, BOD parameter at all points, COD parameter at points 4-6, TSS parameters at points 1-5 and 7, while the temperature and TDS parameter are still below the quality standards at all sampling points. The results of heavy metal measurements obtained Pb parameter at all points, Cu parameter at points 4-15, Cd parameter at point 7, Fe parameter at all points, Mn parameter at points 1-3 and 6-15, while the Cr parameter is still below the quality standards at all sampling points. Point 8 obtained an index value of 5.13, which means moderate pollution, while points 1 to 7 and points 9 to 15 were lightly polluted.
Air Quality at Urban Transportation Nodes: A Case Study of SO₂, NO₂, and CO Concentrations in Palembang City Yuwati, Sri; Gulo, Fakhili; Zulkarnain, Mohammad; Suheryanto
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 3 (2025): September
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i3.17495

Abstract

This study aimed to analyze variations in sulfur oxide (SO₂), nitrogen oxide (NO₂), and carbon monoxide (CO) concentrations at eight major intersections in Palembang City.This study analyzed ambient air quality at eight major traffic nodes in Palembang City using SO₂, NO₂, and CO parameters. Measurements were carried out at a height of 2–3 meters according to US-EPA and WHO standards. SO₂ was determined using the West–Gaeke method, NO₂ with the Griess–Saltzman and chemiluminescence analyzer, while CO was measured using the Non-Dispersive Infrared (NDIR) method. All procedures were accompanied by recording of meteorological factors and instrument quality control. The results showed a significant difference between morning and afternoon, with higher average concentrations in the afternoon (SO₂: p = 0.014; NO₂: p = 0.000; CO: p = 0.003), which was influenced by traffic density and meteorological conditions. Pollutant concentrations tended to increase during rush hour at intersections with high vehicle flow. In contrast, inter-location analysis showed variations in pollutant concentrations, but they were not statistically significant (p > 0.05), indicating a relatively homogeneous distribution of traffic emissions in urban areas. Exposure to SO₂, NO₂, and CO has the potential to cause serious health impacts, including respiratory and cardiovascular disorders, as well as liver dysfunction due to oxidative stress and hypoxia. These findings emphasize the need for continuous air quality monitoring and transportation emission control policies in Palembang.