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Integration of Photocatalysis and Membrane Technology as a Hybrid System for Microplastic Degradation in Wastewater Sri Rahayu Dwi Purnaningtyas; Mila Sari; Eka Cahya Muliawati; Afridon
Science Journal Get Press Vol 3 No 1 (2026): January, 2026
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/science.v3i1.411

Abstract

Microplastic contamination in wastewater poses a serious threat to aquatic ecosystems and human health due to its persistence and limited removal by conventional treatment processes. This study evaluates a hybrid photocatalytic membrane reactor (PMR) integrating TiO₂-based photocatalysis with membrane filtration for the removal and degradation of polyethylene (PE), polypropylene (PP), and polyester (PET) microplastics. Photocatalytic membranes were fabricated via phase inversion using polyethersulfone (PES) and characterized by SEM, XRD, contact angle, porosity, and water flux measurements.TiO₂ incorporation significantly increased membrane hydrophilicity and permeability while maintaining the asymmetric structure and anatase crystallinity. The hybrid PMR achieved microplastic removal efficiencies above 99% for all polymers, outperforming membrane-only filtration and standalone photocatalysis. FTIR and SEM analyses confirmed oxidative polymer chain scission, while mineralization efficiencies reached 8.7%, 11.3%, and 18.9% for PE, PP, and PET, respectively. The degradation followed apparent first-order kinetics, with PET showing the highest rate constant. Hydroxyl radicals were identified as the dominant reactive species. The PMR also exhibited mitigated membrane fouling, stable performance over five cycles, and negligible TiO₂ leaching. The specific energy consumption ranged from 0.38 to 0.46 kWh m⁻³ with an estimated operational cost of USD 0.42–0.53 per m³. These findings demonstrate the technical and economic feasibility of the hybrid PMR for advanced microplastic treatment.
Analisis Parameter Kualitas Air Sungai Batang Ombilin di Nagari Limo Koto Kecamatan Koto VII Kabupaten Sijunjung Tahun 2025 Afridon; Kalasta Ayunda Putri; Aulia Rahmi Cheni; Oktamianiza; Vitratul Ilahi
Buletin Keslingmas Vol 44 No 4 (2025): BULETIN KESLINGMAS: VOL. 44 NO. 4 TAHUN 2025
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31983/keslingmas.v44i4.14176

Abstract

Batang Ombilin River in Nagari Limo Koto, Koto VII District, Sijunjung Regency, is the main water source for the local community, used for domestic needs, agriculture, and other economic activities. However, the water quality of this river has declined due to human activities such as agriculture, settlements, and illegal gold mining (PETI). This decline in water quality has the potential to impact public health, leading to an increase in cases of skin diseases and diarrhea in the surrounding areas. This study aims to analyze the water quality of the Batang Ombilin River through testing physical and chemical parameters, including temperature, color, Total Suspended Solids (TSS), Total Dissolved Solids (TDS), Biochemical Oxygen Demand (BOD), and Chemical Oxygen Demand (COD). Water samples were taken from three points (upstream, middle, downstream) and analyzed in the laboratory. The research results show that the parameters of temperature, TDS, BOD, and COD still meet the quality standards for Class II according to Government Regulation No. 22 of 2021. However, color and TSS parameters exceeded standard limits at some points, especially near community and mining activities. In conclusion, although the water quality remains safe for most parameters, there are indications of pollution that require further attention. Regular monitoring and public education are needed to prevent further degradation of water quality.
Co-Authors Aulia Rahmi Cheni Eka Cahya Muliawati Kalasta Ayunda Putri Mila Sari Oktamianiza Oktamianiza Sri Rahayu Dwi Purnaningtyas Vitratul Ilahi