School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia.
Centre of Lipids Engineering and Applied Research (CLEAR), Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia.
Environ Sci Pollut Res Int. 2020 Jun;27(18):23246-23257. doi: 10.1007/s11356-020-07972-5. Epub 2020 Apr 25.
Polluted sterilization condensate discharged from palm oil mill may contain polyphenols that are rich in the antioxidant property. Emulsion liquid membrane (ELM) process is a promising method for polyphenol recovery due to its several attractive features such as high selectivity, simple operation, and low energy consumption. In this study, the condensate was characterized to determine its total phenolic content (TPC), ionic elements, and pH. ELM formulation containing tributylphosphate (TBP) as a carrier, kerosene as a diluent, sorbitan monooleate (Span 80) as a surfactant, and sodium hydroxide (NaOH) as a stripping agent was developed. The results show that sterilization condensate contains 700-1500 mg GAE/L of TPC. During the ELM process, more than 91% of extraction with 83% recovery and 8.3 enrichment were achieved at the favorable condition of 0.1 M TBP, external phase pH 5, 1 M NaOH, 1:5 treat ratio, 5% v/v of octanol as a modifier, and 100 mg GAE/L external phase concentrations. Thus, ELM offers a potential alternative technology to extract and recover polyphenols from palm oil mill sterilization condensate while contributing to sustainable production. Graphical abstract Extraction of polyphenols from palm oil mill sterilization condensate using ELM process.
来自棕榈油厂的污染消毒冷凝物可能含有富含抗氧化性能的多酚。乳状液膜（ELM）工艺是一种有前途的多酚回收方法，因为它具有高选择性、操作简单和能耗低等特点。在本研究中，对冷凝物进行了特性分析，以确定其总酚含量（TPC）、离子元素和 pH 值。ELM 配方包含磷酸三丁酯（TBP）作为载体、煤油作为稀释剂、山梨糖醇单油酸酯（Span 80）作为表面活性剂和氢氧化钠（NaOH）作为剥离剂。结果表明，消毒冷凝物含有 700-1500mgGAE/L 的 TPC。在 ELM 过程中，在 0.1M TBP、外部相 pH5、1M NaOH、1:5 处理比、5%v/v 辛醇作为改性剂和 100mgGAE/L 外部相浓度的有利条件下，萃取率超过 91%，回收率为 83%，浓缩倍数为 8.3。因此，ELM 为从棕榈油厂消毒冷凝物中提取和回收多酚提供了一种潜在的替代技术，同时有助于可持续生产。
