Palm Oil Mill Effluent Treatment Using Electrocoagulation: Process Optimization for the Removal of Dissolved Organic Matter

IF 3.4 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society Pub Date : 2026-03-12 DOI:10.1016/j.jics.2026.102549

Nofri Naldi , Reni Desmiarti , Primas Emeraldi , Maulana Yusup Rosadi , Muhammad Miftahur Rahman , Nofrizon Rahman , Ariadi Hazmi

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Abstract

The reduction of dissolved organic matter (DOM) in palm oil mill effluent (POME) was investigated by using electrocoagulation (EC) with aluminum electrodes. The operational parameters, including current intensities (12, 14, 16, and 31 A), applied voltages (2 V and 4 V), and contact times (30, 60, 120, and 180 min), were examined to assess their influence on DOM removal during EC treatment. UV absorbance at 260 nm (UV₂₆₀), dissolved organic carbon (DOC), and fluorescent DOM were monitored to assess the changes in concentration and composition. The raw POME contained 2687 mg/L of DOC and exhibited high levels of protein-like, fulvic-like, and humic-like components. The results showed that EC at 31 A with a stirring speed of 30 rpm achieved reductions of 83% in DOC, 90% in UV₂₆₀, and 67% in humic-like Peak 5 after 45 min. Additionally, the aromatic content of DOM, measured by specific UV absorbance (SUVA), decreased by 62% after 15 min of treatment at 31 A with 10 rpm stirring, indicating that DOM transformed into aliphatic compounds. The Peak 5/Peak 2 ratio showed a good correlation with SUVA, suggesting that EC effectively reduced aromatic humic-like DOM. Furthermore, X-ray fluorescence analysis of the resulting EC sludge revealed a high aluminum content, both in its elemental form (60.4%) and as Al₂O₃ (71.3%), suggesting potential for material recovery and reuse.

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电絮凝法处理棕榈油厂废水：去除溶解有机物的工艺优化

采用铝电极电絮凝法（EC）对棕榈油厂废水（POME）中的溶解性有机物（DOM）进行了还原研究。检查了操作参数，包括电流强度（12、14、16和31 A）、施加电压（2 V和4 V）和接触时间（30、60、120和180分钟），以评估它们对EC处理过程中DOM去除的影响。监测260 nm紫外吸光度（UV260）、溶解有机碳（DOC）和荧光DOM的变化，评估其浓度和组成的变化。粗POME的DOC含量为2687 mg/L，并表现出高水平的蛋白质样、黄腐钙样和腐殖质样成分。结果表明，在31 A、30 rpm的搅拌速度下，EC在45 min后，DOC降低83%，UV260降低90%，腐殖质样峰5降低67%。经31 A、10 rpm搅拌处理15 min后，DOM的芳香族含量下降62%，表明DOM转化为脂肪族化合物。峰5/峰2比值与SUVA呈良好的相关性，表明EC能有效还原芳香腐殖质样DOM。此外，对所得EC污泥的x射线荧光分析显示，铝的元素含量（60.4%）和Al2O3（71.3%）都很高，表明材料回收和再利用的潜力。

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来源期刊

Journal of the Indian Chemical Society 化学-化学综合

CiteScore

3.50

自引率

7.70%

发文量

492

审稿时长

3-8 weeks

期刊介绍： The Journal of the Indian Chemical Society publishes original, fundamental, theorical, experimental research work of highest quality in all areas of chemistry, biochemistry, medicinal chemistry, electrochemistry, agrochemistry, chemical engineering and technology, food chemistry, environmental chemistry, etc.