High efficiency bioethanol production from OPEFB using pilot pretreatment reactor

Han, Minhee; Kim, Yule; Kim, Seung Wook; Choi, Gi Wook

doi:10.1002/jctb.2668

Cited by 54 publications

(25 citation statements)

References 21 publications

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“…Although, sonication time did not appear significant as an individual effect, but its interaction with acid concentration (AC) was significant to improve the sugar release from rice straw. Besides their non-significance, interaction, and quadratic terms were not omitted from the quadratic model as suggested in some studies (Chauhan and Gupta 2004;Han et al 2011a) because the quadratic and interaction terms (even non-significant) contribute to the response vector up to certain extent (Khalili et al 2011). Three-dimensional response surface plots were constructed to find out the optimum level of each factor with an objective to maximize the sugar yield.…”

Section: Resultsmentioning

confidence: 99%

Optimization of sono-assisted dilute sulfuric acid process for simultaneous pretreatment and saccharification of rice straw

Rehman¹,

Kim²,

Kim³

et al. 2013

Int. J. Environ. Sci. Technol.

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In this study, sono-assisted dilute sulfuric acid process was evaluated for its viability of simultaneous pretreatment and saccharification of rice straw. Three critical factors for simultaneous pretreatment and saccharification process, such as sonication time (30-50 min), temperature (70-90°C), and acid concentration (5-10 %), were optimized to maximize reducing sugar yield using Box-Behnken design and response surface methodology. The response surface methodology model was found to be adequately fitted to the obtained data. Simultaneous pretreatment and saccharification factors were optimized at sonication of 50 min, 80°C and an acid concentration of 10 % yielding the maximum sugar content (31.78 g/100 g of biomass). Scanning electron microscopy revealed that the smooth surface of raw biomass was altered into a rough and porous surface as a result of sugar release, which showed the prospective feasibility of simultaneous pretreatment and saccharification process. This process integration may lead to develop economical bioethanol production facility. However, further research is required to make this process industrially viable.

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Section: Resultsmentioning

confidence: 99%

Optimization of sono-assisted dilute sulfuric acid process for simultaneous pretreatment and saccharification of rice straw

Rehman¹,

Kim²,

Kim³

et al. 2013

Int. J. Environ. Sci. Technol.

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“…However, it seems that alkali pretreatment is the most effective pretreatment method for oil palm biomass according to what is reported in the literature. Han and his colleagues investigated NaOH pretreatment of OPEFB for bioethanol production and a total glucose conversion rate (TGCR) of 86.37 % was obtained (Han et al 2011 ). Lignin degradation might contribute to the effectiveness of alkali pretreatment and H 2 O 2 posttreatment can further enhance such effects.…”

Section: Pretreatment Of Solid Oil Palm Biomassmentioning

confidence: 98%

“…Oil palm biomass pretreatment can be classifi ed into biological pretreatment, physical pretreatment, chemical (Syafwina et al 2002 ;Amin et al 2010 ). Chemical method is the most often used pretreatment method for oil palm biomass, such as two-stage dilute acid hydrolysis (Millati et al 2011 ), alkali pretreatment (Han et al 2011 ), sequential dilute acid and alkali pretreatment (Kim et al 2012 ), alkali and hydrogen peroxide pretreatment (Misson et al 2009 ), sequential alkali and phosphoric acid pretreatment (Kim et al 2012 ), aqueous ammonia (Jung et al 2011a ), and solvent digestion ). However, it seems that alkali pretreatment is the most effective pretreatment method for oil palm biomass according to what is reported in the literature.…”

Section: Pretreatment Of Solid Oil Palm Biomassmentioning

confidence: 99%

Upgrading of Oil Palm Biomass to Value-Added Products

Geng

2014

Biomass and Bioenergy

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“…Hassan et al (2013) studied the pretreatment effects of steam assisted 5% acidic and alkaline pretreatments by using acetic acid as well as NaOH solutions and found that steam assisted acetic acid produced better results for enzymatic saccharification and sugar production enhanced to 62.36% xylose and 81.84% glucose. Han et al (2011) studied the effect of alkaline pretreatment and used concentrated NaOH (3M). They reported 85% total cellulose conversion by enzymatic saccharification.…”

Section: Figure 1-pretreatment Process Of Lignocellulosicmentioning

confidence: 99%

Delignification of Palm Fiber by Microwave Assisted Chemical Pretreatment for Improving Energy Efficiency

Laghari¹,

Isa²,

Laghari³

2016

MJS

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Fossils fuels are main source of energy. However, their depletion has caused widespread concern. In recent years, utilization of agricultural wastes for energy has received a lot of attention. Lignocellulosic biomass is an abundantly available agricultural waste. It is a candidate for economic and environmental friendly source of biofuel production. However, high lignin content of the biomass reduces its digestibility and energy recovery. Suitable pretreatment of biomass can degrade the lignin content and enhance its conversion to biofuel. This work studied the effects of various microwave assisted chemical pretreatments on delignification of palm fiber to improve energy recovery. A total of 12 solutions using four chemicals, namely, sulphuric acid, sodium hydroxide, hydrogen peroxide, and sodium carbonate with 3 different concentrations i.e. 2%, 3.5%, and 5% were prepared. 1 g of palm fiber was pretreated in 10 ml of each solution, for 48 h. The solution along with the biomass was then heated by microwave irradiation for 5 min. The results showed that the pretreatments performed were effective in reducing lignin content and increasing cellulose content of the samples. Sodium hydroxide and hydrogen peroxide were most suitable for delignification of palm fiber. Treatment with these chemicals reduced the lignin content and changed the C/N ratio to the optimum range. This increased cellulose content enhances energy potential to produce biofuel by conversion to ethanol or biogas.

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High efficiency bioethanol production from OPEFB using pilot pretreatment reactor

Cited by 54 publications

References 21 publications

Optimization of sono-assisted dilute sulfuric acid process for simultaneous pretreatment and saccharification of rice straw

Optimization of sono-assisted dilute sulfuric acid process for simultaneous pretreatment and saccharification of rice straw

Upgrading of Oil Palm Biomass to Value-Added Products

Delignification of Palm Fiber by Microwave Assisted Chemical Pretreatment for Improving Energy Efficiency

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