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Design of Seaweed Liquid Waste Processing Installation in the Alkali Treatment Process as Recycled Water Based on Physics and Chemistry Djusdil Akrim; Suparno; Muh Fikruddin; Jumadil; Nani Anggraini; Andi Zulfikar Syaiful; Hamsina; Ridwan
Jurnal Penelitian Pendidikan IPA Vol 10 No 6 (2024): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i6.6312

Abstract

World seaweed production in 2020 published by the Food and Agriculture Organization of the United Nations (FAO), Indonesia was ranked second as the largest seaweed producer with production of 11.8 million tons. The aim of this research is: To analyze the characteristics of seaweed liquid waste at PT. XYZ. To design a seaweed liquid waste processing process at PT. XYZ based on physics-chemistry as recycled water. Methods include analysis and experiments. This method is used to analyze the characteristics of liquid waste and determine the design of the seaweed liquid waste processing process at PT. XYZ. Research results: The characteristics of the seaweed liquid waste produced do not meet the quality standards in Kep.08/Men. LH/2009 concerning Industrial Waste. A physic-chemical based liquid waste processing process with neutralization, filtering and aeration can be used as recycled water in the alkali treatment process.
Quantifying Peak-Hour Traffic Contributions to Urban Air Pollution in Makassar City, Indonesia Yunus, Sattar; Anggraini, Nani; Muis, Ramdiana; Rachman, Indriyani; Matsumoto, Toru
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 9, NUMBER 1, APRIL 2026
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v9i1.25969

Abstract

Aim: This study focuses on the main urban corridors of Makassar City and the short-term exposure levels of CO, PM2.5, and TSP resulting from traffic congestion during peak hours. Methodology and Results: Field measurements were conducted along three major corridors: Sultan Alauddin, A.P. Pettarani, and Urip Sumoharjo. The measurements included pollutant concentrations, traffic counts, and weather conditions during both peak and non-peak periods. The study employed a time-series quantitative observational design. The statistical analyses used were Pearson’s correlation, multiple linear regression, and the independent-samples t-test. The results revealed correlations of 0.98–0.99 between traffic volume and CO concentrations, and 0.94 for TSP. During peak periods, a strong correlation was observed between vehicle volume and PM2.5 levels, which exceeded WHO limits. TSP concentrations were also noticeably above the acceptable exposure range. CO concentrations were influenced by traffic volume and remained low but significant. Conclusion, Significance, and Impact of the Study: During peak traffic congestion, substantial tailpipe and non-tailpipe emissions are released, leading to the accumulation of pollutants along urban corridors. The implementation of a fully functional multi-corridor and multi-pollutant traffic and air quality monitoring system demonstrates an assessment framework that can be applied in other locations. These findings provide evidence to support sustainable urban transport systems and air quality management strategies, with expected outcomes including time-targeted traffic control and reductions in non-tailpipe emissions. Ultimately, these efforts contribute to achieving the Sustainable Development Goals (SDG 11 and SDG 3) related to improved air quality.