GEORGE FARINA
Pilots at Cedar Pt Ln, Killen, AL

6063204, May 16, 2000

Aug 27, 1999

9/384587

Roger D. Hester - Hattiesburg MS
George E. Farina - Killen AL

Tennessee Valley Authority - Knoxville TN
University of Southern Mississippi - Hattiesburg MS

C13K 106

127 1

A process, system, and apparatus for effectively and economically producing fermentable sugars from cellulosic feedstocks is described. The economic viability of using wood and/or agricultural waste, containing large fractions of cellulose and hemicellulose is highly dependent on the method used for hydrolysis. Underlying the gist of this invention are newly discovered methods, means, and techniques by which both the pentosans and hexosans comprising the hemicellulose fraction of the selected feedstock and the hexosans comprising the cellulose fraction of the selected feedstock can be quickly and efficiently converted in a single pass through a single device to fermentable sugars containing minimal quantities of degradation products known to inhibit fermentation. Successful operation of this new hydrolysis process employing a new reactor design can produce fermentable sugars at rates and efficiencies previously thought unattainable by reducing the number of processing steps, pieces of equipment, and unit operation previously used.

5972118, Oct 26, 1999

Nov 14, 1997

8/970554

Roger D. Hester - Hattiesburg MS
George E. Farina - Killen AL

Tennessee Valley Authority - Muscle Shoals AL

B01J 300, A01J 1700, B28B 1702, C13K 102

127 1

A process, system, and apparatus for effectively and economically producing fermentable sugars from cellulosic feedstocks is described. The economic viability of using wood and/or agricultural waste, containing large fractions of cellulose and hemicellulose is highly dependent on the method used for hydrolysis. Underlying the gist of this invention are newly discovered methods, means, and techniques by which both the pentosans and hexosans comprising the hemicellulose fraction of the selected feedstock and the hexosans comprising the cellulose fraction of the selected feedstock can be quickly and efficiently converted in a single pass through a single device to fermentable sugars containing minimal quantities of degradation products known to inhibit fermentation. Successful operation of this new hydrolysis process employing a new reactor design can produce fermentable sugars at rates and efficiencies previously thought unattainable by reducing the number of processing steps, pieces of equipment, and unit operation previously used.

5560827, Oct 1, 1996

Feb 2, 1995

8/382450

Roger D. Hester - Hattiesburg MS
George E. Farina - Killen AL

Tennessee Valley Authority - Muscle Shoals AL
University of Southern Mississippi - Hattiesburg MS

B01D 1508

210635

A process for effectively and economically separating an ionic component such as acid from a nonionic component such as sugar in polar solutions using ion exclusion technology whereby the viability of using hydrolysis to convert wood and agricultural waste products such as corn stover into fuel alcohol is substantially effected. Underlying the gist of this invention are newly discovered methods by which dispersion, caused by shrinkage of resin within ion exclusion columns, is controlled resulting in operation of such columns, over a wide range of process conditions to produce separate and distinct elution profiles for the acid and sugar. Successful operation of these new ion exclusion methods, techniques, and systems can replace lime precipitation which currently is being used in acid hydrolysis processing. This not only obviates the need for the large quantities of acid and lime required therein, but also eliminates the unwanted and highly ecologically undesirable production of huge quantities of waste gypsum.

5407580, Apr 18, 1995

Sep 29, 1993

8/128174

Roger D. Hester - Hattiesburg MS
George E. Farina - Killen AL
Srikanth Nanguneri - Baton Rouge LA

Tennessee Valley Authority - Muscle Shoals AL

B01D 1508

210635

A process for effectively and economically separating an ionic component such as acid from a nonionic component such as sugar in polar solutions using ion exclusion technology whereby the viability of using hydrolysis to convert wood and agricultural waste products such as corn stover into fuel alcohol is substantially effective. Underlying the gist of this invention are newly discovered methods by which dispersion, caused by shrinkage of resin within ion exclusion columns, is controlled resulting in operation of such columns, over a wide range of process conditions to produce separate and distinct elution profiles for the acid and sugar. Successful operation of these new ion exclusion methods, techniques, and systems can replace lime precipitation which currently is being used in acid hydrolysis processing. This not only obviates the need for the large quantities of acid and lime required therein, but also eliminates the unwanted and highly ecologically undesirable production of huge quantities of waste gypsum.

5628907, May 13, 1997

Feb 9, 1995

8/385941

Roger D. Hester - Hattiesburg MS
George E. Farina - Killen AL

Tennessee Valley Authority - Muscle Shoals AL

B01D 1508

210635

A process for effectively and economically separating an ionic component such as acid from a nonionic component such as sugar in polar solutions using ion exclusion technology whereby the viability of using hydrolysis to convert wood and agricultural waste products such as corn stover into fuel alcohol is substantially effective. Underlying the gist of this invention are newly discovered methods by which dispersion, caused by shrinkage of resin within ion exclusion columns, is controlled resulting in operation of such columns, over a wide range of process conditions to produce separate and distinct elution profiles for the acid and sugar. Successful operation of these new ion exclusion methods, techniques, and systems can replace lime precipitation which currently is being used in acid hydrolysis processing. This not only obviates the need for the large quantities of acid and lime required therein, but also eliminates the unwanted and highly ecologically undesirable production of huge quantities of waste gypsum.

5667693, Sep 16, 1997

Jun 21, 1996

8/667752

Roger D. Hester - Hattiesburg MS
George E. Farina - Killen AL

Tennessee Valley Authority - Muscle Shoals AL
University of Southern Mississippi - Hattiesburg MS

B01D 1508

210635

A process for effectively and economically separating an ionic component such as acid from a nonionic component such as sugar in polar solutions using ion exclusion technology whereby the viability of using hydrolysis to convert wood and agricultural waste products such as corn stover into fuel alcohol is substantially effected. Underlying the gist of this invention are newly discovered methods by which dispersion, caused by shrinkage of resin within ion exclusion columns, is controlled resulting in operation of such columns, over a wide range of process conditions to produce separate and distinct elution profiles for the acid and sugar. Successful operation of these new ion exclusion methods, techniques, and systems can replace lime precipitation which currently is being used in acid hydrolysis processing. This not only obviates the need for the large quantities of acid and lime required therein, but also eliminates the unwanted and highly ecologically undesirable production of huge quantities of waste gypsum.