Effect of process variables on liquid hot water pretreatment of wheat straw for bioconversion to fuel-ethanol in a batch reactor

2007 ◽  
Vol 82 (10) ◽  
pp. 929-938 ◽  
Author(s):  
José A Pérez ◽  
Alberto González ◽  
J Miguel Oliva ◽  
Ignacio Ballesteros ◽  
Paloma Manzanares
Keyword(s):  
Wheat Straw ◽  
Batch Reactor ◽  
Fuel Ethanol ◽  
Hot Water ◽  
Process Variables ◽  
Liquid Hot Water Pretreatment ◽  
Liquid Hot Water ◽  
Water Pretreatment ◽  
Hot Water Pretreatment

Optimizing Liquid Hot Water pretreatment conditions to enhance sugar recovery from wheat straw for fuel-ethanol production

Fuel ◽  
2008 ◽  
Vol 87 (17-18) ◽  
pp. 3640-3647 ◽  
Author(s):  
J.A. Pérez ◽  
I. Ballesteros ◽  
M. Ballesteros ◽  
F. Sáez ◽  
M.J. Negro ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Wheat Straw ◽  
Fuel Ethanol ◽  
Hot Water ◽  
Sugar Recovery ◽  
Liquid Hot Water Pretreatment ◽  
Liquid Hot Water ◽  
Water Pretreatment ◽  
Pretreatment Conditions ◽  
Hot Water Pretreatment

Industrial Scale-Up of pH-Controlled Liquid Hot Water Pretreatment of Corn Fiber for Fuel Ethanol Production

2005 ◽  
Vol 125 (2) ◽  
pp. 077-098 ◽  
Author(s):  
Nathan S. Mosier ◽  
Richard Hendrickson ◽  
Mark Brewer ◽  
Nancy Ho ◽  
Miroslav Sedlak ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Scale Up ◽  
Fuel Ethanol ◽  
Hot Water ◽  
Corn Fiber ◽  
Industrial Scale ◽  
Liquid Hot Water Pretreatment ◽  
Liquid Hot Water ◽  
Water Pretreatment ◽  
Hot Water Pretreatment

scholarly journals Liquid Hot Water Pretreatment of Wheat Straw for Full Carbohydrates Biorefinery

BioResources ◽  
2017 ◽  
Vol 12 (3) ◽  
Author(s):  
Haiyan Yang ◽  
Kun Wang ◽  
Jianfeng Ma ◽  
Jing Yang ◽  
Zhengjun Shi
Keyword(s):  
Wheat Straw ◽  
Hot Water ◽  
Liquid Hot Water Pretreatment ◽  
Liquid Hot Water ◽  
Water Pretreatment ◽  
Hot Water Pretreatment

scholarly journals Liquid Hot Water Pretreatment of Lignocellulosic Biomass at Lab and Pilot Scale

Processes ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 1518
Author(s):  
Jose M. (Chema) Jimenez-Gutierrez ◽  
Rob A. J. Verlinden ◽  
Peter C. van der Meer ◽  
Luuk A. M. van der Wielen ◽  
Adrie J. J. Straathof
Keyword(s):  
Pilot Plant ◽  
Batch Reactor ◽  
Pilot Scale ◽  
Hot Water ◽  
Liquid Hot Water Pretreatment ◽  
Operational Conditions ◽  
Liquid Hot Water ◽  
Water Pretreatment ◽  
Plant Trials ◽  
Hot Water Pretreatment

Liquid hot water pretreatment is considered to be a promising method for increasing biomass digestibility due to the moderate operational conditions without chemical additions. A necessary step towards the scalability of this pretreatment process is performing pilot plant trials. Upscaling was evaluated with a scaling factor of 500, by using 50 mL in the laboratory and 25 L in a pilot plant batch reactor. Pretreatment times were varied from 30 to 240 min, and temperatures used were 180–188 °C, while applying similar heating profiles at both scales. The initial mass fraction of poplar wood chips ranged from 10% to 16%. Liquid hot water pretreatment at laboratory and pilot scale led to analogous results. The acetic acid analysis of the liquid and solid fractions obtained after pretreatment indicated that complete deacetylation of poplar biomass can be achieved.

scholarly journals Liquid Hot Water Pretreatment and Enzymatic Hydrolysis as a Valorization Route of Italian Green Pepper Waste to Delivery Free Sugars

Foods ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1640
Author(s):  
M.A. Martín-Lara ◽  
L. Chica-Redecillas ◽  
A. Pérez ◽  
G. Blázquez ◽  
G. Garcia-Garcia ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Liquid Fraction ◽  
Hot Water ◽  
Effect Of Temperature ◽  
Green Pepper ◽  
Free Sugars ◽  
Liquid Hot Water Pretreatment ◽  
Liquid Hot Water ◽  
Water Pretreatment ◽  
Hot Water Pretreatment

In this work, liquid hot water pretreatment (autohydrolysis) was used to improve enzymatic hydrolysis of a commonly consumed vegetable waste in Spain, Italian green pepper, to finally produce fermentable sugars. Firstly, the effect of temperature and contact time on sugar recovery during pretreatment (in insoluble solid and liquid fraction) was studied in detail. Then, enzymatic hydrolysis using commercial cellulase was performed with the insoluble solid resulting from pretreatment. The objective was to compare results with and without pretreatment. The results showed that the pretreatment step was effective to facilitate the sugars release in enzymatic hydrolysis, increasing the global sugar yield. This was especially notable when pretreatment was carried out at 180 °C for 40 min for glucose yields. In these conditions a global glucose yield of 61.02% was obtained. In addition, very low concentrations of phenolic compounds (ranging from 69.12 to 82.24 mg/L) were found in the liquid fraction from enzymatic hydrolysis, decreasing the possibility of fermentation inhibition produced by these components. Results showed that Italian green pepper is an interesting feedstock to obtain free sugars and prevent the enormous quantity of this food waste discarded annually.

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