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Waste Technology
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Education,
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Articles 112 Documents
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Kinetic and Isotherm Analysis of TiO₂/UiO-66-NH₂ Composites for Treating Produced Water Contaminants Kusworo, Tutuk Djoko; Budiyono, Budiyono
Waste Technology Vol 12, No 2 (2024)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/12.2.%p

Abstract

The TiO₂/UiO-66-NH₂ composites synthesized through a hydrothermal method, demonstrated a significant enhancement in photocatalytic activity under visible light, offering a promising solution for the treatment of pollutants in produced water. These composites exhibited exceptional photocatalytic adsorption and degradation capabilities, efficiently removing various contaminants. The adsorption process during pollutant removal was effectively modeled by both the Freundlich and Langmuir isotherms, indicating the heterogeneous nature of the adsorption sites and the monolayer adsorption behavior, respectively. The composites achieved impressive removal efficiencies of 88.46% for NH₃-N and 81.97% for total dissolved solids (TDS), underscoring their potential to address common pollutants in produced water. UV-vis spectroscopy analysis revealed a band gap energy of 2.28 eV for the TiO₂/UiO-66-NH₂ composites, which is lower than that of pure TiO₂, contributing to enhanced photocatalytic performance under visible light. This reduced band gap improves the material's ability to absorb visible light, thereby facilitating more efficient degradation of organic pollutants. Furthermore, the pseudo-second-order kinetic model best described the adsorption process for both TiO₂ and TiO₂@UiO-66-NH₂ composites, suggesting that chemisorption is the dominant mechanism for NH₃-N removal. This indicates that the composites exhibit a high affinity for NH₃-N, effectively removing it from produced water. Overall, the TiO₂/UiO-66-NH₂ composites provide a promising approach for mitigating contaminants in produced water, demonstrating their potential for use in both environmental and industrial water treatment applications. 
A Systematic Literature Review on Agricultural Effluent Treatment using Advanced Membrane Technologies Kusworo, Tutuk Djoko; Utomo, Dani Puji
Waste Technology Vol 13, No 1 (2025)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/13.1.1-14

Abstract

Agricultural wastewater poses significant environmental challenges due to its complex composition, including high concentrations of nutrients, organic matter, and emerging contaminants. Membrane-based technologies have emerged as advanced solutions for effective treatment and resource recovery from such effluents. This review provides a comparative analysis of various membrane systems—pressure-driven membranes, membrane bioreactors (MBRs), photocatalytic membranes, forward osmosis (FO), membrane distillation (MD), and adsorptive membranes—focusing on their performance in terms of pollutant removal, fouling behavior, energy consumption, and cost-effectiveness. Photocatalytic and FO membranes exhibit high potential for removing persistent organic pollutants and ensuring water reuse, while MD and MBRs demonstrate robust performance in nutrient and organic load reduction. Adsorptive membranes offer selective removal capabilities, particularly for antibiotics and pesticides, although scalability remains a concern. Advances in membrane materials, surface modifications, and hybrid system integration are paving the way for enhanced operational efficiency. The findings underscore the need for integrated, multi-barrier treatment approaches and continued innovation to meet the sustainability requirements of agricultural wastewater management.. 

Page 12 of 12 | Total Record : 112

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