Enhanced biogas production from rice straw, triticale straw and softwood spruce by NMMO pretreatment

Teghammar, Anna; Karimi, Keikhosro; Horváth, Ilona Sárvári; Taherzadeh, Mohammad J.

doi:10.1016/j.biombioe.2011.10.019

Cited by 106 publications

(56 citation statements)

References 18 publications

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“…In the study of Gao et al [59] the yield obtained was considerably lower compared to our work, reaching a biogas yield of 122 mL/g VS (with approximately 60% methane content). On the other hand, Teghammar et al [30] obtained similar results (245 mL CH4/g VS) with our work from ionic liquid pretreated spruce. Finally, alkaline pretreatment resulted also in lower results of methane yields, such as 50 mL/g VS after pretreatment with 7% w/w NaOH [60], whereas addition of 5.5% w/w thiourea resulted in a methane yield of 210 mL/g VS [61].…”

Section: Effect Of Ethanol Content On Methane Yieldsupporting

confidence: 76%

High-Titer Methane from Organosolv-Pretreated Spruce and Birch

et al. 2017

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Abstract:The negative impact of fossil fuels and the increased demand for renewable energy sources has led to the use of novel raw material sources. Lignocellulosic biomass could serve as a possible raw material for anaerobic digestion and production of biogas. This work is aimed at using forest biomass, both softwood (spruce) and hardwood (birch), as a raw material for anaerobic digestion. We examined the effect of different operational conditions for the organosolv pretreatment (ethanol content, duration of treatment, and addition of acid catalyst) on the methane yield. In addition, we investigated the effect of addition of cellulolytic enzymes during the digestion. We found that inclusion of an acid catalyst during organosolv pretreatment improved the yields from spruce, but it did not affect the yields from birch. Shorter duration of treatment was advantageous with both materials. Methane yields from spruce were higher with lower ethanol content whereas higher ethanol content was more beneficial for birch. The highest yields obtained were 185 mL CH 4 /g VS from spruce and 259.9 mL CH 4 /g VS from birch. Addition of cellulolytic enzymes improved these yields to 266.6 mL CH 4 /g VS and 284.2 mL CH 4 /g VS, respectively.

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Section: Effect Of Ethanol Content On Methane Yieldsupporting

confidence: 76%

High-Titer Methane from Organosolv-Pretreated Spruce and Birch

et al. 2017

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“…Compared with other volatile organic cellulose solvents, NMMO possess the advantages of low toxicity, low hydrophobicity, low viscosity, thermal stability, broad selection of anion and cation combinations, enhanced electrochemical stability, high reaction rates, low volatility with potentially minimal environmental impact, and non-flammable properties [44]. Teghammar et al (2012) [45] reported effect of NMMO pretreatment on digestion of rice straw with 50% w/w NMMO solution after 3 hour pretreatment at 130⁰C, while mixing every 15 min, where 328 Nml CH4/gCH was produced. This production is seven times more than the methane production of the untreated rice straw samples, and corresponds to 79% of the theoretical yield.…”

Section: Nmmo Pretreatmentmentioning

confidence: 99%

“…This is one of the main advantages of pretreatment of lignocellulose biomass with NMMO compared with similar pretreatment methods. The best digestion of rice straw was obtained after the 1 h pretreatment, and longer pretreatments resulted in lower initial digestion rate and also less methane produced [45]. Unlike physical and biological pretreatment, chemical pretreatment may leave chemical residues which may influence the downstream AD process.…”

Section: Nmmo Pretreatmentmentioning

confidence: 99%

Enhanced biogas production from rice straw with various pretreatment : a review

Sari

Budiyono

2014

waste technol.

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Abstrack -Rice straw is one of organic material that can be used for sustainable production of bioenergy and biofuels such as biogas . Out of all bioconversion technologies for biogas production, anaerobic digestion (AD) is a most cost-effective bioconversion technology that has been implemented worldwide for commercial production of electricity, heat, and compressed natural gas (CNG) from organic materials. However, the utilization of rice straw for biogas production via anaerobic digestion has not been widely adopted because the complicated structure of the plant cell wall makes it resistant to microbial attack. Pretreatment of recalcitrant rice straw is essential to achieve high biogas yield in the AD process. A number of different pretreatment techniques involving using physical pretreatment (hydrothermal and freeze), chemical pretreatment (sodium carbonate -sodium sulfite, hydrogen peroxide, NMMO, alkaline, and dilute acid) and biological pretreatment (fungal pretreatment) also combined pretretment (microwave irradiation and chemical) approaches have been investigated, but there is no report that systematically compares the performance of these pretreatment methods for application on rice straw for biogas production. This paper reviews the methods that

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“…However, most of the rice straws are burnt in the field causing significant environmental and health problems as well as serious traffic accidents in addition to the loss of valuable resource (Chou et al, 2009). Rice residues are abundantly available and renewable and can be used as an energy source in thermochemical conversion processes such as gasification and combustion (Yoon et al, 2012;Delivand et al, 2011) or in bioconversion processes for production of bioethanol (Karimi et al, 2006) and biogas (Teghammar et al, 2012). The ash produced from gasification and combustion processes can be used as a supplementary material in cement and ceramic manufacturing (Zain et al, 2011) and the spent material from bioconversion can be used as an animal feed (Bisaria et al, 1997).…”

Section: Ajasmentioning

confidence: 99%

Physical Properties of Rice Residues as Affected by Variety and Climatic and Cultivation Onditions in Three Continents

Zhang

Ghaly

Li³

2012

American Journal of Applied Sciences

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Rice husk and straw are by-products of rice cultivation and processing industry and can be used as an energy source. Proper understanding of the physical properties of rice residues is necessary for utilizing them in thermochemical conversion processes such as gasification and combustion. The physical properties (moisture content, particle size, bulk density and porosity) of rice husks and straws obtained from three countries (Egypt, Cuba and China) were evaluated in this study. The moisture contents of rice husks and straws were in the ranges of 4.60-6.07% and 6.58-6.92%, respectively. For all rice varieties tested, the moisture content of the straws was higher than these of the husks. The particle sizes of rice husks and straws were in the ranges of 0.212-0.850 mm and 0-0.710 mm, respectively. All the rice husk varieties had a normal distribution of particle size around the main value of 0.6 mm while the particle size distribution for the rice straws showed a decreasing trend, the larger the particle size the higher was the weight percentage. The bulk density of rice husks and straws were in the ranges of 331.59-380.54 kg m -3 and 162. 03-194.48 kg m -3 , respectively. The bulk density values of rice straws were lower than those of rice husks. A negative linear relationship between the bulk density and the average particle size was observed for rice husks and straws. The porosity of rice husks and straws were in the ranges of 63.64-68.94% and 71.21-85.28%, respectively. A positive linear relationship between the porosity and the average particle size was observed for rice husks and straws. Also, a negative linear relationship between the porosity and the bulk density was observed. The results obtained from this study showed significant differences in the physical properties of the rice husks and straws collected from different countries (located in three different continents). These differences may be due to variations in climatic conditions, soil type, methods of cultivation and type of fertilizer used. The results also indicated that different parts of rice plant (straw and husk) had different physical properties. Also, significant differences were observed among rice varieties even though they were grown under the same climatic conditions using same soil type and cultivation method as in the case of the long and short grain rice variety of Egypt.

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Enhanced biogas production from rice straw, triticale straw and softwood spruce by NMMO pretreatment

Cited by 106 publications

References 18 publications

High-Titer Methane from Organosolv-Pretreated Spruce and Birch

High-Titer Methane from Organosolv-Pretreated Spruce and Birch

Enhanced biogas production from rice straw with various pretreatment : a review

Physical Properties of Rice Residues as Affected by Variety and Climatic and Cultivation Onditions in Three Continents

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