In-Process Recycling of Acetic Acid From Dilute Aqueous Waste Streams

EPA Contract Number: 68D30111
Title: In-Process Recycling of Acetic Acid From Dilute Aqueous Waste Streams
Investigators: Baker, Richard W.
Small Business: Membrane Technology and Research Inc.
EPA Contact: Manager, SBIR Program
Phase: I
Project Period: September 1, 1993 through March 1, 1994
Project Amount: $50,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1993) RFA Text |  Recipients Lists
Research Category: SBIR - Pollution Prevention , Pollution Prevention/Sustainable Development , Small Business Innovation Research (SBIR)


Dilute acetic acid wastewater streams are produced in large quantities by the synthetic organic chemical industry, for example, in the synthesis of terephthalic acid, the precursor of polyethylene terephthalate. Recovery of acetic acid from these wastestreams for in-process recycling of the acid would reduce waste and save valuable resources. This proposal describes the development of a process that combines selective dialysis followed by bipolar-membrane electrolysis to recover and concentrate this acid. Although the program focuses on acetic acid recovery, the technology could be applied to recovery and recycling of other weak acids such as acrylic acid, lactic acid, and phenols.

Supplemental Keywords:

Scientific Discipline, Toxics, Waste, Water, Sustainable Industry/Business, National Recommended Water Quality, cleaner production/pollution prevention, Wastewater, Chemistry, Contaminant Candidate List, Technology for Sustainable Environment, New/Innovative technologies, Engineering, Hazardous, 33/50, Engineering, Chemistry, & Physics, Environmental Engineering, in-process recycling, electrochemical technology, waste reduction, acetic acid, emission control technologies, recovery, membrane-based, membrane processes, dialysis, electrochemical techniques, recycling, Phenol, electrochemical, waste streams, aqueous waste, pollution prevention, electrochemcial treatment, bipolar-membrane electrolysis, membrane technology, electrochemical treatment, phenolic compounds

Progress and Final Reports:

  • Final