Development of natural cellulase inhibitor mediated intensified biological pretreatment technology using Pleurotus florida for maximum recovery of cellulose from paddy straw under solid state condition

2017 ◽  
Vol 244 ◽  
pp. 353-361 ◽  
Author(s):  
Manickam Naresh Kumar ◽  
Rajarathinam Ravikumar ◽  
Senniyappan Thenmozhi ◽  
Muthuvelu Kirupa Sankar
2012 ◽  
Vol 6 (1) ◽  
pp. 14-19 ◽  
Author(s):  
Urmila Gupta Phutela ◽  
Karamjeet Kaur ◽  
Madhurama Gangwar ◽  
NK Khullar

Biogas production from paddy straw offers a great potential as an alternative to fossilfuels. But, lignin and silica adversely affect the efficient utilization of paddy straw. Henceforth, the potential of biological pretreatment of paddy straw by a lignocellulolytic fungus, Pleurotus florida was investigated whereby the straw was inoculated with different spore concentrations of Pleurotus florida for different durations. Biodegradability of paddy straw was determined at different incubation periods and the selected pretreatment was further used for biogas production studies. An incubation period of 30 days was found to be the optimum pretreatment period in enhancing paddy straw digestibility with 19.3% increase in cellulose and 55.1% decrease in lignin. The biologically degraded paddy straw resulted in 15.4% increase in biogas production than that of the untreated paddy straw. DOI: http://dx.doi.org/10.3126/ijls.v6i1.5550


2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Wei Gao ◽  
Zhiqiang Lei ◽  
Lope G Tabil ◽  
Rongfei Zhao

Pelleting can increase the efficiency of handling and transportation of biomass. Pretreatment obtains lignin fragments by disrupting the lignocellulosic structure of biomass and ensures the high-quality compressed pellets. In this study, solid-state fermentation (SSF) is used as a biological method to improve the quality of pellets of oat straw. SSF of oat straw using Trametes versicolor 52J (TV52J) and Phanerochaete chrysosporium (PC) was conducted. Response surface methodology (RSM) was employed by using a four-factor, three-level Box–Behnken design with fermentation time (days), moisture content (%), particle size (mm), and fermentation temperature (°C) as independent parameters. Pellet density, dimensional stability, and tensile strength were the response variables. The optimization options of fermentation time (33.96 and 35 days), moisture content (70%), particle size (150 and 50 mm), and fermentation temperature (22°C) of oat straw pretreated with these two fungal strains were obtained. The microscopic structural changes of oat straw caused by biological pretreatment were investigated by scanning electron microscopy (SEM). Observation results of SEM showed that the connection between single fibers became relatively loose, and this was beneficial to improve the physical quality of the pellets.


2016 ◽  
Vol 45 (1) ◽  
pp. 221-226 ◽  
Author(s):  
Mohammad Nasehi ◽  
Nor Mohammad Torbatinejad ◽  
Saied Zerehdaran ◽  
Amir Reza Safaie

Author(s):  
Oinam Jennifer ◽  
Laishram Joymati Devi

Mushrooms are a source of nutrition particularly in respect of proteins and vitamins. It has been rightly called “vegetable meat”. Apart from being potential protein and energy source, mushrooms are famous for their medicinal values. In addition to their fascination for the gourmet, they are nature’s most active agents in the disposal of forest’s waste materials. Not only in disposing timber, but also helps in converting dead plants into available food. They are efficient agents, fitting into the nutrient cycle of farms and forests. As they utilize agricultural by products and wastes as their substrate, mushroom cultivation is an eco-friendly activity. In a country like India where vegeterians dominate, every attempt should be made to popularize a vegetable protein source like mushroom. A study on the cultivation of oyster mushroom, Pleurotus florida was undertaken. It was found to grow on various solid wastes viz. paddy straw, rice husk, saw dust, water hyacinth and a mixture of all the selected substrates. The oyster mushroom cultivated on the paddy straw gives the maximum yield with high content of protein, carbohydrate and lipid.


2019 ◽  
Vol 1 (1) ◽  
pp. 5-17
Author(s):  
Budiyono Budiyono ◽  
Siswo Sumardiono ◽  
Fadillah Fathir Mahmud Fofana ◽  
Ihwan Fauzi ◽  
Agus Hadiyarto

Rice husk is one of the agricultural waste from rice crop residue which has high potential to be processed into biogas. The purpose of this research is to study the effect of solid state anaerobic digestion and liquid anaerobic digestion on biogas production from rice husk waste. The anaerobic digestion laboratory scale used in this experiment is operated in a batch system and at room temperature. This method is added with chemical and biological pretreatment that was NaOH and microbial consortium. Total solid (TS) was varied from 5%, 7%, 9%, 11% which is L-AD and 17%, 19%, 21%, 23% are SS-AD. Biogas results were measured using the water displacement method every two days to determine daily production. The results showed that with the addition of NaOH the total volume of biogas obtained by L-AD method (TS 9%) and SS-AD (TS 23%) were 1254 ml and 1397 ml. Production of biogas per unit of TS for L-AD method is 46,44 ml / grTS and for SS-AD is 20,246 ml / grts, while biogas production per reactor volume unit for L-AD method is 6,26 ml / ml reactor and for SS-AD method is 4.64 ml / ml reactor. The kinetics constant of biogas production with L-AD method obtained A, U, and λ respectively were 50,53 ml / grTS, 1.23ml / grTS.day, 11,71 day, while for SS-AD method obtained A, U , and λ respectively 21.07 ml / grTS, 0.6 ml / grTS.day, 6.2 days.


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