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Ethanol from lignocellulosic biomass...

Jain, Tushar.

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Ethanol from lignocellulosic biomass using cell encapsulation.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Ethanol from lignocellulosic biomass using cell encapsulation./
作者:	Jain, Tushar.
面頁冊數:	133 p.
附註:	Source: Dissertation Abstracts International, Volume: 74-06(E), Section: B.
Contained By:	Dissertation Abstracts International74-06B(E).
標題:	Engineering, Agricultural. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3536887
ISBN:	9781267954565

Ethanol from lignocellulosic biomass using cell encapsulation.
Jain, Tushar.

Ethanol from lignocellulosic biomass using cell encapsulation. - 133 p.

Source: Dissertation Abstracts International, Volume: 74-06(E), Section: B.

Thesis (Ph.D.)--University of Idaho, 2013.

Encapsulated cell technologies have the potential to make lignocellulosic ethanol production more efficient and cost-effective. This study developed the operating conditions needed to apply this technology to two separate processes in lignocellulosic ethanol production. Hydrolysis of pretreated saw dust using enzymes produced from encapsulated T. reesei cells was effective at converting the cellulose to sugars. Encapsulation helped to keep the cells viable in continuous operation with high productivities. Fermentation by using concentrated encapsulated S. cerevisiae beads increased the rate of fermentation which reduced the time of fermentation to 6 h and the ethanol yield of 95% could be achieved. The novel concentrated encapsulated beads showed high activity for their reuse for 50 batches. It also was observed to eliminate the problems of other conventional high concentration yeast fermentation methods (Melle-Boinot process) including foam formation, separation difficulties and excessive heat production. High yeast levels also convert sugars faster limiting the amount of sugars available for other microorganisms such as bacteria to consume. The novel encapsulation method protects the yeast from osmotic stress of high sugar concentrations. These beads could ferment 35% sugar solutions using backset operation with a yield ranging from 95 - 97%. Moreover, the encapsulated yeast beads can be dried and stored for future use. The reuse of beads, decrease in fermentation time and increase in yield reduce fermentation cost, which makes ethanol production more economic.

ISBN: 9781267954565Subjects--Topical Terms:

1019504
Engineering, Agricultural.

Ethanol from lignocellulosic biomass using cell encapsulation.
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245 1 0 $a Ethanol from lignocellulosic biomass using cell encapsulation.
300 $a 133 p.
500 $a Source: Dissertation Abstracts International, Volume: 74-06(E), Section: B.
500 $a Adviser: Jon Van Gerpen.
502 $a Thesis (Ph.D.)--University of Idaho, 2013.
520 $a Encapsulated cell technologies have the potential to make lignocellulosic ethanol production more efficient and cost-effective. This study developed the operating conditions needed to apply this technology to two separate processes in lignocellulosic ethanol production. Hydrolysis of pretreated saw dust using enzymes produced from encapsulated T. reesei cells was effective at converting the cellulose to sugars. Encapsulation helped to keep the cells viable in continuous operation with high productivities. Fermentation by using concentrated encapsulated S. cerevisiae beads increased the rate of fermentation which reduced the time of fermentation to 6 h and the ethanol yield of 95% could be achieved. The novel concentrated encapsulated beads showed high activity for their reuse for 50 batches. It also was observed to eliminate the problems of other conventional high concentration yeast fermentation methods (Melle-Boinot process) including foam formation, separation difficulties and excessive heat production. High yeast levels also convert sugars faster limiting the amount of sugars available for other microorganisms such as bacteria to consume. The novel encapsulation method protects the yeast from osmotic stress of high sugar concentrations. These beads could ferment 35% sugar solutions using backset operation with a yield ranging from 95 - 97%. Moreover, the encapsulated yeast beads can be dried and stored for future use. The reuse of beads, decrease in fermentation time and increase in yield reduce fermentation cost, which makes ethanol production more economic.
520 $a Keywords: Encapsulation, bead, yeast, S. cerevisiae , T. reesei, lignocellulosic, ethanol, hydrolysis, pretreatment, immobilization.
590 $a School code: 0089.
650 4 $a Engineering, Agricultural. $3 1019504
650 4 $a Engineering, Chemical. $3 1018531
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650 4 $a Biology, Microbiology. $3 1017734
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