MFI zeolite as adsorbent for selective recovery of hydrocarbons from ABE fermentation broths

Validerad; 2014; 20130920 (dankor)
1-Butanol and butyric acid are two interesting compounds that may be produced by acetone, butanol, and ethanol fermentation using e.g. Clostridium acetobutylicum. The main drawback, restricting the commercialization potential of this process, is the toxicity of butanol for the cell culture resulting in low concentrations of this compound in the broth. To make this process economically viable, an efficient recovery process has to be developed. In this work, a hydrophobic MFI type zeolite with high silica to alumina ratio was evaluated as adsorbent for the recovery of butanol and butyric acid from model solutions. Dual component adsorption experiments revealed that both butanol and butyric acid showed a high affinity for the hydrophobic MFI zeolite when adsorbed from aqueous model solutions. Multicomponent adsorption experiments using model solutions, mimicking real fermentation broths, revealed that the adsorbent was very selective to the target compounds. Further, the adsorption of butyric and acetic acid was found to be pH dependent with high adsorption below, and low adsorption above, the respective pKa values of the acids. Thermal desorption of butanol from MFI type zeolite was also studied and a suitable desorption temperature was identified.

Zarebska, AgataLuleå tekniska universitet,Kemiteknik(Swepub:ltu)agazar (author)
Saremi, PardisLuleå tekniska universitet(Swepub:ltu)parsar (author)
Korelskiy, DanilLuleå tekniska universitet,Kemiteknik(Swepub:ltu)dankor (author)
Ohlin, LindsayLuleå tekniska universitet,Kemiteknik(Swepub:ltu)linohl (author)
Rova, UlrikaLuleå tekniska universitet,Kemiteknik(Swepub:ltu)ulrok (author)
Hedlund, JonasLuleå tekniska universitet,Kemiteknik(Swepub:ltu)johe (author)
Grahn, MattiasLuleå tekniska universitet,Kemiteknik(Swepub:ltu)magr (author)
Luleå tekniska universitetKemiteknik (creator_code:org_t)

In:Adsorption: Springer Science and Business Media LLC20:2-3, s. 465-4700929-56071572-8757

By the author/editor: Faisal, Abrar; Zarebska, Agata; Saremi, Pardis; Korelskiy, Danil; Ohlin, Lindsay; Rova, Ulrika; show more...; Hedlund, Jonas; Grahn, Mattias; show less...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Chemical Enginee ...; and Chemical Process ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Industrial Biote ...; and Bioprocess Techn ...

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.