Organosolv pretreatments of rice straw followed by microbial hydrolysis for efficient biofuel production

2020 ◽  
Vol 148 ◽  
pp. 923-934 ◽  
Author(s):  
Bahiru Tsegaye ◽  
Chandrajit Balomajumder ◽  
Partha Roy
Keyword(s):  
Rice Straw ◽  
Biofuel Production ◽  
Microbial Hydrolysis

Expression of serpins by Clostridium thermocellum and simultaneous saccharification of lignocellulosic biomass to enhance ethanol production

BioResources ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. 8662-8676
Author(s):  
Maria Mushtaq ◽  
Muhammad Javaid Asad ◽  
Muhammad Zeeshan Hyder ◽  
Syed Muhammad Saqlan Naqvi ◽  
Saad Imran Malik ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Wheat Straw ◽  
Corn Stover ◽  
Rice Straw ◽  
Clostridium Thermocellum ◽  
Ethanol Yield ◽  
Biofuel Production ◽  
Yeast Fermentation ◽  
Second Generation Bioethanol ◽  
Simultaneous Saccharification

Utilization of biomass for production of second generation bioethanol was considered as a way to reduce burdens of fossil fuel in Pakistan. The materials wheat straw, rice straw, cotton stalk, corn stover, and peel wastes were used in this experiment. Various parameters, such as acidic and alkali pretreatment, enzymatic hydrolysis by cellulases, and effect of proteases inhibitors on ethanol production, were examined. Fermentation was completed by the yeasts Saccharomyces cerevisiae and Clostridium thermocellum separately, and their ethanol production were compared and maximum ethanol yield was obtained with wheat straw i.e.,11.3 g/L by S. cerevisiae and 8.5 g/L by C. thermocellum. Results indicated that a higher quantity of sugar was obtained from wheat straw (19.6 ± 1.6 g/L) followed by rice straw (17.6 ± 0.6 g/L) and corn stover (16.1 ± 0.9 g/L) compared to the other evaluated biomass samples. A higher yield of ethanol (11.3 g/L) was observed when a glucose concentration of 21.7 g/L was used, for which yeast fermentation efficiency was 92%. Results also revealed the increased in ethanol production (93%) by using celluases in combination with recombinant Serine protease inhibitors from C. thermocellum. It is expected that the use of recombinant serpins with cellulases will play a major role in the biofuel production by using agricultural biomass. This will also help in the economics of the biofuel.

PRODUCTION OF BIOFUEL FROM WASTE LIGNOCELLULOSIC BIOMASS MATERIALS BASED ON ENERGY SAVING VIEWPOINT

2012 ◽  
Vol 06 ◽  
pp. 715-720
Author(s):  
Maki Takano ◽  
Kazuhiro Hoshino
Keyword(s):  
Lignocellulosic Biomass ◽  
Rice Straw ◽  
Steam Explosion ◽  
Simultaneous Saccharification And Fermentation ◽  
Biofuel Production ◽  
Fermentable Sugars ◽  
Renewable Material ◽  
Suitable Combination ◽  
Biomass Materials ◽  
Simultaneous Saccharification

To develop biofuel production from waste lignocellulosic biomass materials the rice straw was selected one of renewable material and the degradation condition about pretreatment and enzymatic hydrolysis to obtain effectively fermentable sugars was investigated. Rice straw was pretreated by five kinds of methods and then the components ratio of rice straw was examined. First, the steam explosion was selected based on the degradability and the requirement energy. In addition, the best suitable combination of two cellulases to effective and economical hydrolyze was determined from the degradability of these pretreated rice straws. In the simultaneous saccharification and fermentation of the steam explosion rice straw by combining cellulase cocktail and a novel fermenting fungus, 13.2 g/L ethanol was able to product for 96 h.

Innovative combined dry fractionation technologies for rice straw valorization to biofuels

2015 ◽  
Vol 17 (2) ◽  
pp. 926-936 ◽  
Author(s):  
Santi Chuetor ◽  
Rafael Luque ◽  
Cécile Barron ◽  
Abderrahim Solhy ◽  
Xavier Rouau ◽  
...  
Keyword(s):  
Rice Straw ◽  
Biofuel Production ◽  
Waste Generation ◽  
Dry Fractionation ◽  
Lignocellulose Biomass

Development of an innovative lignocellulosic biorefinery: milling combined with electrostatic (EF-T) and turbo (TF-T) fractionation technologies of lignocellulose biomass. EF-T and TF-T appear to be interesting technologies for biofuel production from waste feedstocks (e.g. rice straw) without any chemical or water inputs and minimizing waste generation.

scholarly journals Ash Melting Behavior of Rice Straw and Calcium Additives

Agriculture ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1282
Author(s):  
Veronika Chaloupková ◽  
Tatiana Ivanova ◽  
Petr Hutla ◽  
Monika Špunarová
Keyword(s):  
Rice Straw ◽  
Positive Impact ◽  
Melting Behavior ◽  
Biofuel Production ◽  
Biomass Ash ◽  
Melting Temperatures ◽  
Ash Melting ◽  
Ash Melting Behavior ◽  
Large Formation ◽  
Feedstock Material

Rice straw is potentially an appropriate feedstock material for biofuel production, since a huge amount of this postharvest residue is generated every year. The transformation of such agricultural biomass into densified products with a higher energy value and their subsequent combustion is associated with several questions. One of them is that rice straw exhibits a large formation of ash during combustion; thus, it is essential to know the nature of its ash melting behavior. Generally, during the combustion of straw biomass, ash sintering occurs in relatively low temperatures, resulting in the damaging of heating equipment. This negative aspect can be overcome by the addition of calcium-based additives. This paper aimed to study the ash melting behavior at a laboratory scale and to determine the ash melting points of rice straw mixed with calcium carbonate (CaCO3) and calcium hydroxide (Ca(OH)2) in different proportional ratios. The standardly produced ash samples from the rice straw obtained from Cambodia were constantly heated up in a muffle furnace, and characteristic temperatures of ash melting, i.e., shrinkage, deformation, hemisphere, and flow temperature, were recorded. The results showed that increasing the additive ratio did not bring linear growth of the melting temperatures. The addition of 1% CaCO3 showed an optimal positive impact of higher ash melting temperatures, and thus a better ability to abate the sintering of the rice straw ash.

scholarly journals Physicochemical characterization of agro-industrial residues for second-generation ethanol production

2021 ◽  
Vol 10 (8) ◽  
pp. e33110817151
Author(s):  
Igor Vieira Evangelista ◽  
Adam Gonçalves Arruda ◽  
Larissa Soares de Menezes ◽  
Janaína Fischer ◽  
Carla Zanella Guidini
Keyword(s):  
Ethanol Production ◽  
Rice Straw ◽  
Sugarcane Bagasse ◽  
Second Generation ◽  
Physicochemical Characterization ◽  
Industrial Wastes ◽  
Biofuel Production ◽  
Lignocellulosic Materials ◽  
Solid Waste Disposal ◽  
Second Generation Ethanol

Ethanol production from renewable sources, such as lignocellulosic materials, is already underway in several countries. The interest in the technology stems from concerns about global warming and the environmental impacts of solid waste disposal. Moreover, the conversion of agro-industrial wastes into ethanol is a value-adding strategy. This study aimed to evaluate the physicochemical characteristics of three lignocellulosic materials— rice straw bran, sugarcane bagasse, and corn peel bran—and determine, on the basis of these analyses, their suitability as feedstocks for second-generation ethanol production. Physicochemical characterization included the determination of particle size, moisture, ash, total solids, water activity, crude fat, protein, total extractives, soluble and insoluble lignin, holocellulose, cellulose, hemicellulose, and total carbohydrates. Rice straw bran is composed of 38.33% cellulose and 19.73% hemicellulose, sugarcane bagasse is composed of 27.09% cellulose and 5.61% hemicellulose, and corn peel bran is composed of 55.75% cellulose and 12.93% hemicellulose. The characterization showed the high concentration of cellulose in the residue of the corn peel bran. The results indicate that the three biomasses are suitable raw materials for biofuel production.

Microbial hydrolysis and fermentation of rice straw for ethanol production

Fuel ◽  
2016 ◽  
Vol 180 ◽  
pp. 679-686 ◽  
Author(s):  
Xiaodan Wu ◽  
Jinsheng Zhang ◽  
Erni Xu ◽  
Yuhuan Liu ◽  
Yanling Cheng ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Rice Straw ◽  
Microbial Hydrolysis

scholarly journals Evaluation of Potential for Ethanol Production from Rice Straw Using Satellite Data

2017 ◽  
Vol 9 (6) ◽  
pp. 22
Author(s):  
Chiharu Hongo ◽  
Eisaku Tamura ◽  
I. G. A. A. Ambarawati ◽  
I. Made Anom Wijaya ◽  
A. A. A. Mirah Adi
Keyword(s):  
Rice Straw ◽  
Satellite Data ◽  
Rice Yield ◽  
Storage System ◽  
Field Investigation ◽  
Raw Material ◽  
Biofuel Production ◽  
Bioethanol Production ◽  
National Goal ◽  
Paddy Area

Purpose of this study is to estimate rice yield on a plot basis with use of satellite data and field investigation data and to calculate potential quantity of rice straw to be utilized as a raw material for biofuel production in Bali, Indonesia. In addition, for continuous supply of rice straw by farmers to a biofuel producer, it is absolutely necessary to investigate farmer’s interest, behavior and potential issues to solve. For this investigation, an interview was made to the subak heads. The subak is a traditional social organization consisting of farmers for managing irrigation and agriculture in the farmers’ village.The created estimation equation of rice yield had NDVI from SPOT satellite data as a predictor and was significant at 1% level. Based on the rice yield estimated through the equation and the paddy area, quantity of rice straw to be available and quantity of bioethanol to be produced were estimated. In case of Kediri, the rice straw quantity was 42,274 t/year and the ethanol quantity was 12,682 kl.On the other hand, the handling of rice straw after harvesting was leaving/putting back to soil or burning, which accounted for 76% of the rice straw. Concerning a price of rice straw, about 60% of farmers expressed their willingness to sell at 100 rupiah (1 cent US$) per kg, and about 88% including people saying high probability seemed to think this price would be as an adequate level of sales price. Through the interview work, it becomes clear that, when some issues such as price of rice straw are settled, farmers are positive to selling of rice straw for production of biofuel.For realizing bioethanol production from rice straw, there still remain some items to be studied further such as production process, transportation and storage system and costs. The result of our study suggests that a proposal for improvement of stable production can be made through rice yield estimation and monitoring using satellite data and that rice straw can be supplied as a promising resource of raw material for bioethanol production. This is considered to contribute the promotion of activity to reach the national goal of bioethanol production in future.

scholarly journals Energy Potential of Agri Residual Biomass in Southeast Asia with the Focus on Vietnam

Agronomy ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 169
Author(s):  
Denisa Beňová ◽  
Kryštof Mareš ◽  
Petr Hutla ◽  
Tatiana Ivanova ◽  
Jan Banout ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Rice Straw ◽  
Chemical Elements ◽  
Calorific Value ◽  
Volatile Matter ◽  
Energy Utilization ◽  
Biofuel Production ◽  
Rice Husks ◽  
Energy Potential ◽  
Residual Biomass

Southeast Asia currently faces a huge increase in energy consumption and serious environmental issues. A widely underutilized and still unexplored potential of these countries lies in residual biomass. In the present research, the production quantities and energy yields of the most abundant agricultural byproducts in Vietnam, i.e., rice straw, rice husks, sugarcane bagasse and sugarcane trash, were calculated. Total crop yield, residues ratio and net calorific values of the wet basis biomass served as input parameters for the calculations. Moreover, the results were found for individual regions and provinces of the country. The findings show that the production of paddy rice straw is an enormous 97 million tons per year with an energy potential of over 380 TWh, as well as another 9 million tons yearly and 35 TWh in the case of rice husks. More than half of rice biomass production is concentrated in the Mekong River Delta region. Harvesting and processing of sugarcane annually generates about 5 million tons of bagasse and over 3.5 million tons of sugarcane trash with the total energy potential of about 27 TWh, which is primarily available in the central regions of Vietnam. The detailed laboratory determination of fuel-energy properties of studied materials, such as gross and net calorific value, volatile matter, ash and moisture content and contents of chemical elements was also carried out. Based on the research results and literature analysis, the possibilities of biofuel production and energy utilization of the above-mentioned residues are discussed.

Pretreatment of Rice Straw by Inorganic Salts and 1-Ethyl-3-methylimdazolium Acetate for Biofuel Production

2019 ◽  
Author(s):  
Pichayanan Suwannabun ◽  
Kraipat Cheenkachorn ◽  
Methinee Prongjit ◽  
Atthasit Tawai ◽  
Malinee Sriariyanun
Keyword(s):  
Rice Straw ◽  
Biofuel Production ◽  
Inorganic Salts
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