Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 27, Issue 18, Pages 23246-23257Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-020-07972-5
Keywords
Palm oil mill effluent; Characterization; Liquid membrane formulation; Transport mechanism; Waste valorization
Categories
Funding
- Ministry of Higher Education, Universiti Teknologi Malaysia [PDRU: Q.J130000.21A2.04E65, CRG 40.0: Q.J130000.2451.08G02, CRG40.3: R.J130000.7309.4B413]
- Centre of Lipids Engineering and Applied Research
- Ibnu Sina Institute for Scientific and Industrial Research
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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.
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