Status and perspectives on bioenergy in Korea

Lee, Jin Suk; Lee, Joon Pyo; Park, Ji Yeon; Lee, Jung Hwa; Park, Soon Chul

doi:10.1016/j.rser.2011.07.065

Cited by 11 publications

(8 citation statements)

References 9 publications

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“…According to the plan, biofuels will account for about 17% of total transport fuel consumption by 2030 [1]. Since Korea can supply only 30% of the necessary biomass feedstocks, most are imported from foreign countries.…”

Section: Introductionmentioning

confidence: 99%

Optimization of NaOH-catalyzed steam pretreatment of empty fruit bunch

Choi

Park

Lee

et al. 2013

Biotechnol Biofuels

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BackgroundEmpty fruit bunch (EFB) has many advantages, including its abundance, the fact that it does not require collection, and its year-round availability as a feedstock for bioethanol production. But before the significant costs incurred in ethanol production from lignocellulosic biomass can be reduced, an efficient sugar fractionation technology has to be developed. To that end, in the present study, an NaOH-catalyzed steam pretreatment process was applied in order to produce ethanol from EFB more efficiently.ResultsThe EFB pretreatment conditions were optimized by application of certain pretreatment variables such as, the NaOH concentrations in the soaking step and, in the steam step, the temperature and time. The optimal conditions were determined by response surface methodology (RSM) to be 3% NaOH for soaking and 160°C, 11 min 20 sec for steam pretreatment. Under these conditions, the overall glucan recovery and enzymatic digestibility were both high: the glucan and xylan yields were 93% and 78%, respectively, and the enzymatic digestibility was 88.8% for 72 h using 40 FPU/g glucan. After simultaneous saccharification and fermentation (SSF), the maximum ethanol yield and concentration were 0.88 and 29.4 g/l respectively.ConclusionsDelignification (>85%) of EFB was an important factor in enzymatic hydrolysis using CTec2. NaOH-catalyzed steam pretreatment, which can remove lignin efficiently and requires only a short reaction time, was proven to be an effective pretreatment technology for EFB. The ethanol yield obtained by SSF, the key parameter determining the economics of ethanol, was 18% (w/w), equivalent to 88% of the theoretical maximum yield, which is a better result than have been reported in the relevant previous studies.

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Section: Introductionmentioning

confidence: 99%

Optimization of NaOH-catalyzed steam pretreatment of empty fruit bunch

Choi

Park

Lee

et al. 2013

Biotechnol Biofuels

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“…In addition, Lim et al [17] have shown that the gasoline consumers in South Korea are willing to pay a significant premium for the consumption of E5 gasohol (i.e., 5% bioethanol and 95% gasoline). On the other hand, Lee et al [18] argue that South Korea's limited biomass resources along with the high production costs of biofuels present significant barriers to the widespread adoption of biofuels and the achievement of the 2030 implementation targets. However, learning by doing can significantly reduce the biofuel production costs as demonstrated by Goldemberg et al [19] and Chen and Khanna [20].…”

Section: Introductionmentioning

confidence: 99%

Biofuels and Their Potential in South Korea

Tabakis¹

2020

Sustainability

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We investigated the biofuel potential of South Korea and the implications of the introduction of biofuels for the Korean fuel market. We approximated the upper-bound biomass potential from forestry residues, livestock manure, and staple crops and calculated the amount of fuel that could be produced using these different biomass feedstocks. Our assessment suggests that biomass can be used to produce a significant portion of the fuel consumed annually in South Korea, with the most promising feedstock being forestry residues. Out of all the technologies considered, the production of cellulosic ethanol from forestry residues could potentially impact the fuel market the most. The key novelty of our study lies in that we considered a broad portfolio of biofuel technologies and carefully examined their potential economic and environmental implications for South Korea given its biomass availability (which we estimated).

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“…As a consequence of increased energy demand and global warming, sustainability and green growth are considered key concepts for public and industrial growth. In 2014, Korea consumed 0.27 billion tons of oil equivalent (TOE) and is the 9th highest energy consumer and 7th highest carbon dioxide emitter in the world [ 1 , 2 ]. Fossil fuel-based energy resources, such as petroleum (37.1%), coal (29.9%), and natural gas (16.9%), account for approximately 84% of the primary energy consumption [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of biomass quality in short-rotation bamboo (Phyllostachys pubescens) for bioenergy products

Lee

Nguyễn

et al. 2017

Biotechnol Biofuels

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BackgroundIn order to improve the availability of biomass, the concept of growing high yield biomass with short rotations and intensive culture has been introduced. Bamboo has become a feedstock of potential interest for future energy production due to its high productivity and short rotation time. The growth age of biomass is an important factor affecting the efficiency of bioconversion and pretreatment for bioenergy production. In this regard, more information is required on the morphology and chemical composition of bamboo for short-rotation biomass production. In this study, we used a compositional assay to compare a bamboo of two different growth ages.ResultsBamboo of two different ages showed characteristics patterns of morphology, chemical composition, and bioconversion. In young-age (2-month-old) bamboo, the pattern of tissue organization was similar to that of old-age (3-year-old) bamboo, indicating that the former had reached its full height. There were significant differences between young-age and old-age bamboo in terms of chemical composition. The glucose contents in old-age bamboo did not differ significantly among its internodes. For young-age bamboo, the lignin contents were 14.6–18.3%, whereas those of old-age bamboo were considerably higher, ranging from 25.4 to 27.1% with increasing syringyl-to-guaiacyl ratio. The yield of total sugars following enzymatic hydrolysis of young-age bamboo was approximately eight times. However, following hydrogen peroxide–acetic acid pretreatment, the results of separate hydrolysis and fermentation and simultaneous saccharification and fermentation did not differ significantly between young- and old-age bamboo. However, ethanol production was higher in 2-month old than in 3-year old from initial raw biomass.ConclusionOur data show that the production of total sugar from raw material was high in young bamboo with low lignin content. With respect to short-rotation biomass, bamboo culm harvested after termination of height growth is more appropriate for use as a biomass resource to achieve a high yield for bioconversion process.

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Status and perspectives on bioenergy in Korea

Cited by 11 publications

References 9 publications

Optimization of NaOH-catalyzed steam pretreatment of empty fruit bunch

Optimization of NaOH-catalyzed steam pretreatment of empty fruit bunch

Biofuels and Their Potential in South Korea

Evaluation of biomass quality in short-rotation bamboo (Phyllostachys pubescens) for bioenergy products

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