Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1991-10-31
1993-09-14
Niebling, John
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204138, 204151, 127 37, 127 462, 127 54, B01D 6144
Patent
active
052445534
ABSTRACT:
The invention discloses a method for separating acid from an acid-sugar hydrolyzate in an electrodialysis apparatus comprising the steps of continuously passing the hydrolyzate through a diluate compartment of the electrodialysis apparatus, continuously passing a carrier fluid through a concentrate compartment of the electrodialysis apparatus, and maintaining a current between the anode-cathode pair of the electrodialysis apparatus that forces the anions and cations of the acid to migrate from the diluate compartment into a concentrate compartment.
REFERENCES:
patent: 4612286 (1986-09-01), Sherman et al.
Goldstein et al., "Acid Recovery by Electrodialysis and its Economic Implications for Concentrated Acid Hydrolysis of Wood" (1989) pp. 95-106, Applied Biochemistry and Biotechnology.
"Sklarewitz, An Engineering and Economic Analysis for HEI recovery by Electrodialysis in concentrated Acid Wood Hydrolysis". PHD dissertation, North Carolina State University (1984).
Wright, Power & Bergeron, Evalution of Concentrated Hologen Acid Hydrolysis Process for Alcohol Fuel Production, Solar Energy Research Institute/TR-232-2386, Secs. 3, 5-6 (Jun. 1985).
Goldstein, Bayat-Makooi, Sabharwal & Singh, Applied Biochemistry and Biotechnology, Acid Recovery by Electrodialysis and its Economic Implications for Concentrated Acid Hydrolysis of Wood, Applied Biochemistry and Biotechnology 20/21:95-106 (1989).
Nguyen, Venkatesh, Marsland & Goldstein, Applications of Gems to Preliminary Process Design and Economic Analysis for an Integrated Wood Hydrolysis Plant, AICHE Symposium Series 77:85-92 (1981).
Sklarewitz & Goldstein, Recycle of Hydrochloric Acid In A Wood Hydrolysis Plant By Membrane Technology, InterAmerican Congress of Chemical Engineering (Santiago, Chile 1983).
Sklarewitz, An Engineering and Economic Analysis For HC1 Recovery by Electrodialysis in Concentrated Acid Wood Hydrolysis, (Ph.D. Dissertation, North Carolina State University, 1984).
Oshima, Wood Chemistry--Process Engineering Aspects 31-33 (1964).
Locke & Garnum, Working Party on Wood Hydrolysis, Forest Products Journal 11:380-82 (Aug. 1961).
Niebling John
North Carolina State University
Phasge Arun S,.
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