Green adsorption of oil and grease from wastewater using oil palm leaves activated carbon

Cleaner Waste Systems Pub Date : 2025-06-16 DOI:10.1016/j.clwas.2025.100330

Muhammad Raza Ul Mustafa , Muhammad Usama Salim Gandapur , Hifsa Khurshid

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引用次数: 0

Abstract

Oil and grease contamination in wastewater poses a significant environmental threat due to its persistence and harmful ecological effects. Conventional treatment methods are often limited by high costs, inefficiency, and the risk of secondary pollution. This study investigates the use of oil palm leaves-based activated carbon (OPLAC) as a low-cost, environmentally friendly adsorbent for removing oil and grease from wastewater. A Central Composite Design (CCD) under Response Surface Methodology (RSM) was employed to optimize the process, resulting in 17 batch experiments. The model successfully predicted oil and grease removal efficiency. The regeneration and reusability study has also contributed to great results. It identifies optimal conditions at pH 6, 0.16 g adsorbent dosage, and 44 min contact time to achieve a high removal efficiency of 99.4 %. The Langmuir isotherm and pseudo-second-order kinetic models best describe adsorption data. Both have R² values of 0.99, confirming strong model fit and consistent adsorption behaviour. The regeneration and reusability efficiency of OPLAC was 92 %, 85 % and 77 % with a 15 % loss. These findings highlight the potential of OPLAC as a viable solution for treating oil- and grease-laden wastewater and as a means to valorize agricultural waste, contributing to circular economy practices and sustainable water management.

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油棕叶活性炭对废水中油脂的绿色吸附

废水中的油脂污染由于其持久性和有害的生态效应，对环境构成了重大威胁。传统的处理方法往往受到高成本、低效率和二次污染风险的限制。本研究研究了油棕叶活性炭（OPLAC）作为一种低成本、环保的吸附剂用于去除废水中的油脂。采用响应面法（RSM）下的中心复合设计（CCD）对工艺进行优化，共进行了17批试验。该模型成功地预测了油脂的去除效率。再生和可重用性的研究也取得了很大的成果。在pH为6、吸附剂用量为0.16 g、接触时间为44 min的条件下，可获得99.4% %的高去除率。Langmuir等温线和拟二级动力学模型最能描述吸附数据。两者的R²值均为0.99，证实了较强的模型拟合和一致的吸附行为。OPLAC的再生和再利用效率分别为92 %、85 %和77 %，损耗为15 %。这些发现突出了OPLAC作为处理含油脂废水的可行解决方案的潜力，以及作为农业废物增值的一种手段，有助于循环经济实践和可持续水资源管理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cleaner Waste Systems

CiteScore

2.60

自引率

0.00%

发文量