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All Journal AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Journal Serambi Engineering (JSE)
Rizqy, Winda Nurmalia
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering

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Upaya Pengelolaan Sungai Madiun Melalui Penentuan Indeks Pencemaran Air Rizqy, Winda Nurmalia; Cundaningsih, Nurvita
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Madiun River is the largest and main river in Madiun City, which is part of the Bengawan Solo River with a river length of 141 km. Sampling was carried out at seven points along the Madiun River to determine the quality and status of the river. Parameters tested included physical (pH, TSS, DO), chemical (BOD, COD, nitrate, phosphate) and biological (faecal coliform). The Pollution Index (IP) method is used to determine the water quality status of the river, based on the Decree of the Minister of the Environment No. 115 of 2003 on the determination of water quality status. The results showed that the average IP value of the Madiun River was 2.353, which is classified as slightly polluted. The parameters BOD, phosphate and faecal coliform are the main indicators of pollution as they do not meet the requirements of Class II quality standards based on PP RI Number 22 of 2021. Reducing pollution requires routine monitoring, good management of domestic waste and socialisation of the community and farmers on the importance of maintaining river water quality. The research is expected to provide a basis for the government and stakeholders to formulate comprehensive water quality management policies and programmes.
Performance of Fixed-Bed Adsorption Reactor for Total Chromium Removal from Batik Wastewater Using Bioadsorbents and Zeolite Rizqy, Winda Nurmalia; Putro, Raden Kokoh Haryo; Sitogasa, Praditya Sigit Ardisty Sitogasa
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 1 (2026)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v10i1.921

Abstract

Industrial batik wastewater contains total chromium, a heavy metal that can pollute aquatic environments. This study aims to evaluate the performance of a fixed-bed adsorption reactor in reducing total chromium concentrations in batik wastewater using coconut shell, corn cob, and zeolite adsorbents. The batik wastewater was obtained from Jemursari, Surabaya, with an initial total chromium concentration of 2.349-2.374 mg/L and a pH of 8. The bioadsorbents were prepared through carbonization at 500–600 °C, followed by chemical activation using 3 M H?PO?. The adsorption process was conducted continuously in a 5 L laboratory-scale fixed-bed reactor, with sampling times at 10, 40, 70, and 100 minutes. The results showed that total chromium removal efficiency increased significantly within the first 40 minutes for all adsorbents. The highest removal efficiency was achieved using zeolite at 87.8%, followed by coconut shell at 81.9% and corn cob at 73.1%. The superior performance of zeolite was attributed to its ion-exchange mechanism and physical properties, which are well-suited to continuous-flow systems. Contribution to Sustainable Development Goals (SDGs):SDG 6: Clean Water and SanitationSDG 12: Responsible Consumption and ProductionSDG 11: Sustainable Cities and CommunitiesSDG 14 : Life Below Water
Co-Authors Cundaningsih, Nurvita Raden Kokoh Haryo Putro Sitogasa, Praditya Sigit Ardisty Sitogasa