Ruthenium recovery from acetic acid industrial effluent using chemically stable and high-performance polyethylenimine-coated polysulfone-Escherichia coli biomass composite fibers

•The PEI-PSBF was fabricated and used for Ru recovery from industrial effluent.•PEI-PSBF was not swollen nor dissolved in the effluent.•PEI-PSBF showed superior sorption capacity to commercial resins.•Thin fiber type PEI-PSBF could be successfully applied in flow-through column. Recovery of precious...

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Bibliographic Details
Published in:Journal of hazardous materials 2016-08, Vol.313, p.29-36
Main Authors: Kim, Sok, Choi, Yoon-E, Yun, Yeoung-Sang
Format: Article
Language:English
Subjects:
Acetic acid
Acetic Acid - chemistry
Adsorption
Biomass
Effluents
Escherichia coli
Escherichia coli - metabolism
Fibers
Industrial Waste
Ion exchange resin
Polyetherimides
Polyethyleneimine - chemistry
Polyethylenimine
Polymers - chemistry
Precious metal
Recovery
Ruthenium
Ruthenium - isolation & purification
Sorbent
Sorbents
Sorption
Sulfones - chemistry
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Summary:•The PEI-PSBF was fabricated and used for Ru recovery from industrial effluent.•PEI-PSBF was not swollen nor dissolved in the effluent.•PEI-PSBF showed superior sorption capacity to commercial resins.•Thin fiber type PEI-PSBF could be successfully applied in flow-through column. Recovery of precious metal ions from waste effluents is of high concern. In general, ruthenium (Ru) is used in the Cativa process as promoter for carbonylation catalyst and discharged into acetic acid effluent. In the present work, we have designed and developed polyethylenimine-coated polysulfone-bacterial biomass composite fiber (PEI-PSBF) to recover Ru from industrial effluent. The sorbent was manufactured by electrostatic attachment of polyethylenimine (PEI) to the surface of polysulfone-biomass composite fiber (PSBF), which was prepared through spinning of the mixture of polysulfone and Escherichia coli biomass in N,N-dimethylformamide (DMF) into water. Developed PEI-PSBF was highly stable in the acetic acid effluent. The maximum sorption capacity of the developed sorbent PEI-PSBF, coated with PEI (with M.W. of 75,000), was 121.28±13.15mg/g, which was much higher than those of ion exchange resins, TP214, Amberjet 4200, and M500. The PEI-PSBF could be successfully applied in the flow-through column system, showing 120 beds of breakthrough volume.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2016.03.075