Abstract:
:Pretreatment is required to destroy recalcitrant structure of lignocelluloses and then transform into fermentable sugars. This study assessed techno-economics of steam explosion, dilute sulfuric acid, ammonia fiber explosion and biological pretreatments, and identified bottlenecks and operational targets for process improvement. Techno-economic models of these pretreatment processes for a cellulosic biorefinery of 113.5 million liters butanol per year excluding fermentation and wastewater treatment sections were developed using a modelling software-SuperPro Designer. Experimental data of the selected pretreatment processes based on corn stover were gathered from recent publications, and used for this analysis. Estimated sugar production costs ($/kg) via steam explosion, dilute sulfuric acid, ammonia fiber explosion and biological methods were 0.43, 0.42, 0.65 and 1.41, respectively. The results suggest steam explosion and sulfuric acid pretreatment methods might be good alternatives at present state of technology and other pretreatment methods require research and development efforts to be competitive with these pretreatment methods.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Baral NR,Shah Adoi
10.1016/j.biortech.2017.02.068subject
Has Abstractpub_date
2017-05-01 00:00:00pages
331-343eissn
0960-8524issn
1873-2976pii
S0960-8524(17)30191-8journal_volume
232pub_type
杂志文章abstract::A combined process was designed for the co-production of ethanol and methane from unwashed steam-exploded corn stover. A terminal ethanol titer of 69.8 g/kg mass weight (72.5%) was achieved when the fed-batch mode was performed at a final solids loading of 35.5% (w/w) dry matter (DM) content. The whole stillage from h...
journal_title:Bioresource technology
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更新日期:2014-08-01 00:00:00
abstract::Lack of knowledge about the microbial consortia involved in wastewater treatment at different operating temperatures, is a major reason for failure of anaerobic reactors in field applications. Present study was undertaken to correlate performance of hybrid anaerobic reactors operating at different temperatures (37, 45...
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doi:10.1016/j.biortech.2012.05.047
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abstract::Phosphorus (P) in animal manure can be an important nutrient for crops or an environmental contaminant if in excess. Organic P in dairy manure may add to the environmentally bioactive P pools upon mineralization. A 353d incubation study of manures containing C:P between 83 and 130:1 was conducted to determine linkages...
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abstract::Inulin is a naturally occurring second largest storage polysaccharide with a wide range of applications in pharmaceutical and food industries. It is a robust polysaccharide which consists of a linear chain of β-2, 1-linked-d-fructofuranose molecules terminated with α-d-glucose moiety at the reducing end. It is present...
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pub_type: 杂志文章,评审
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abstract::Two coals, sawdust and coal tar were selected to prepare briquettes. Thermogravimetric analyses at three heating rates (i.e. 10, 20 and 30°C/min) and up to 1000°C were carried out with the briquette components. Four blends were prepared and the experimental decomposition profiles were compared with the calculated data...
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journal_title:Bioresource technology
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abstract::Novel biochemical approaches remain to be developed to improve microbial lipid technology. This study demonstrated that sulfate limitation was effective to promote accumulating substantial amounts of intracellular lipid by the oleaginous yeast Rhodosporidium toruloides Y4. When it was cultivated using a medium with an...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2010.09.033
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abstract::This paper reviews technologies for the removal of volatile methyl siloxanes (VMS) from biogas. More than 20 years after identifying silicon dioxide in gas engines running on landfill and sewage gas, three technologies are commercially available to remove siloxanes today: adsorption, absorption and deep chilling. Newe...
journal_title:Bioresource technology
pub_type: 杂志文章,评审
doi:10.1016/j.biortech.2009.12.018
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pub_type: 杂志文章
doi:10.1016/j.biortech.2013.09.017
更新日期:2013-11-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/j.biortech.2017.09.026
更新日期:2018-01-01 00:00:00
abstract::The Synechococcus elongatus PCC 6301 phosphoenolpyruvate carboxylase (ppc) gene was constitutively overexpressed in fluorescent pseudomonads, to increase the supply of oxaloacetate, a crucial anabolic precursor and an intermediate in biosynthesis of organic acids implicated in phosphate (P) solubilization. Pseudomonas...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2009.08.075
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abstract::In this study, an electrolysis-assisted down-flow constructed wetland (E-DFCW) was successfully established, and achieved simultaneously efficient removal of PO43--P (93.6% ± 3.2%), NO3--N (97.1% ± 2.0%) and TN (80.6% ± 5.4%). When compared with electrolysis-assisted up-flow constructed wetland (E-UFCW), E-DFCW allowe...
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更新日期:2021-01-11 00:00:00
abstract::Despite recent advances in down-stream processing, production of microalgae remains substantially limited because of economical reasons. Harvesting and dewatering are the most energy-intensive processing steps in their production and contribute 20-30% of total operational cost. Bio-flocculation of microalgae by co-cul...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2015.03.026
更新日期:2015-06-01 00:00:00
abstract::The aim of this work was to study the influence of influent chemical oxygen demand (COD), upflow velocity of wastewater, and cationic polymer additives in inoculum, on biomass granulation and COD removal efficiency in upflow anaerobic sludge blanket (UASB) reactor for treating low strength wastewater. Statistical mode...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2007.08.075
更新日期:2008-07-01 00:00:00
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journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2019.121494
更新日期:2019-09-01 00:00:00
abstract::Ethanol production by a recombinant bacterium from wheat straw (WS) at high solid loading by separate hydrolysis and fermentation (SHF) and simultaneous saccharification and fermentation (SSF) was studied. The yield of total sugars from dilute acid pretreated WS (150 g/L) after enzymatic saccharification was 86.3±1.5 ...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2011.09.041
更新日期:2011-12-01 00:00:00
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pub_type: 杂志文章
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abstract::In the present investigation, recovery of malic acid from the fermentation broth was performed by using in situ reactive extraction method employing different combination of amine and solvent systems. Totally six solvent mixtures were tested for toxicity on Aspergillus niger PJR1. Further, effect of solvent mixture co...
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pub_type: 杂志文章
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abstract::A novel intracellular bioflocculant (named MBF-W6) produced by Chryseobacterium daeguense W6 cultured in low nutrition medium was investigated in this study. The effects of carbon source, nitrogen source, C/N ratio, initial pH, inoculum size, culture temperature and shaking speed on MBF-W6 production were studied. Che...
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