High efficiency on resin photocatalysis: Study on application and kinetic mechanism using langmuir Hinshelwood Model

Q1 Social Sciences

South African Journal of Chemical Engineering Pub Date : 2025-04-18 DOI:10.1016/j.sajce.2025.04.013

Restu Hikmah Ayu Murti, Muhammad Abdus Salam Jawwad, Khusnul Khotimah Ayuningtiyas, Euis Nurul Hidayah

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引用次数: 0

Abstract

This study aims to evaluate the effectiveness of Resin Immobilize Photocatalyst on reducing tofu waste water under the UV light, the resin is doped with two different semiconductor metals, ZnO and TiO₂. Resin Immobilization Photocatalyst Process (RIPT) was synthesized by impregnating resin and catalyst. In this study, RIPT was made with variations in catalyst weight to determine the effect of catalyst ratio. The primary focus of this study is the reduction of Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) in tofu wastewater. A Langmuir-Hinshelwood kinetic model was used in the photocatalysis kinetic study to determine the reaction rate, in this study the resin capacity of each sample was also calculated. In RIPT-ZnO, the weight of the catalyst affects the reduction of BOD, the highest BOD reduction was obtained from RIPT with 30 g ZnO with a performance that can reduce BOD of tofu waste by 90.2 %, while in removing COD parameter RIPT-ZnO weighing 30 g can reduce 92.61 %. In RIPT-TiO₂ also shows the same trend, the more catalyst used, the greater the removal, whether in BOD or COD, sequentially the reduction in BOD and COD is 79.96 % and 85.29 %. The results of this study indicate that the use of RIPT with different catalyst ratios can effectively reduce BOD and COD in tofu wastewater, with ZnO showing superior performance compared to TiO₂.

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高效树脂光催化：基于langmuir Hinshelwood模型的应用及动力学机理研究

本研究旨在评价树脂固定化光催化剂在紫外光下还原豆腐废水的效果，树脂中掺杂两种不同的半导体金属ZnO和TiO2。采用浸渍树脂和催化剂合成了树脂固定化光催化剂工艺（RIPT）。在本研究中，通过改变催化剂重量来制备RIPT，以确定催化剂配比的影响。本研究的主要重点是降低豆腐废水中的生化需氧量（BOD）和化学需氧量（COD）。光催化动力学研究采用Langmuir-Hinshelwood动力学模型确定反应速率，同时计算每个样品的树脂容量。在RIPT-ZnO中，催化剂的重量影响BOD的还原，30 g ZnO的RIPT对BOD的还原效果最高，可将豆腐废物的BOD降低90.2%，而在去除COD参数时，30 g RIPT-ZnO的还原效果为92.61%。在rpt - tio2中也表现出同样的趋势，无论是在BOD还是COD上，催化剂用量越多，去除率越大，依次BOD和COD的去除率分别为79.96%和85.29%。本研究结果表明，使用不同催化剂配比的RIPT可有效降低豆腐废水中的BOD和COD，其中ZnO表现出优于TiO2的性能。

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来源期刊

South African Journal of Chemical Engineering Social Sciences-Education

CiteScore

8.40

自引率

0.00%

发文量

100

审稿时长

33 weeks

期刊介绍： The journal has a particular interest in publishing papers on the unique issues facing chemical engineering taking place in countries that are rich in resources but face specific technical and societal challenges, which require detailed knowledge of local conditions to address. Core topic areas are: Environmental process engineering • treatment and handling of waste and pollutants • the abatement of pollution, environmental process control • cleaner technologies • waste minimization • environmental chemical engineering • water treatment Reaction Engineering • modelling and simulation of reactors • transport phenomena within reacting systems • fluidization technology • reactor design Separation technologies • classic separations • novel separations Process and materials synthesis • novel synthesis of materials or processes, including but not limited to nanotechnology, ceramics, etc. Metallurgical process engineering and coal technology • novel developments related to the minerals beneficiation industry • coal technology Chemical engineering education • guides to good practice • novel approaches to learning • education beyond university.