Open AccessModelling of Hybrid Method for VOC Removal from Process Wastewater: Distillation and Hydrophilic Pervaporation
Author(s) -
Botond Szilágyi,
Do Thi Huyen Trang,
Dániel Fózer,
Asmaa Selim,
Enikő Haáz,
András Tóth
Publication year - 2020
Publication title -
periodica polytechnica. chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.322
H-Index - 19
eISSN - 1587-3765
pISSN - 0324-5853
DOI - 10.3311/ppch.15190
Subject(s) - pervaporation , distillation , ternary operation , methanol , process engineering , wastewater , process (computing) , separation process , extractive distillation , chromatography , industrial wastewater treatment , chemistry , environmental science , membrane , computer science , environmental engineering , organic chemistry , engineering , permeation , biochemistry , programming language , operating system
The study is motivated by the industrial problem from pharmaceutical industry, which is ethanol and methanol removal from process wastewater. To complete this goal hybrid method is investigated and optimized. Two distillation columns are sufficient for separation of alcohol-water mixture. Suitable water can be purified as bottom product of first column. Ethanol and methanol purification is achieved with combination of second distillation column and pervaporation. The target of this research is to rigorously model and optimize the separation of water-ethanol-methanol ternary mixture in professional flowsheet simulator environment. The minimal sufficient membrane transfers area and number of minimal theoretical stages of the columns are determined. Cost estimation is also investigated according to Douglas methodology. Considering the simulation and economic results it can be determined that, the hybrid configuration is suitable for separation of ternary mixture in 99.5 weight percent purity.