Optimization of cultural factors of newly isolated microalga Spirulina subsalsa and its co-digestion with paddy straw for enhanced biogas production

2019 ◽  
Vol 5 ◽  
pp. 185-198 ◽  
Author(s):  
Rouf Ahmad Dar ◽  
Mehak Arora ◽  
Urmila Gupta Phutela
Keyword(s):  
Biogas Production ◽  
Cultural Factors ◽  
Paddy Straw ◽  
Spirulina Subsalsa

scholarly journals Effect of Different Concentration of Paddy Straw and Cattle Dung on Biogas Production

2019 ◽  
Vol 8 (07) ◽  
pp. 537-544
Author(s):  
Raveena Kargwal ◽  
Yad vika ◽  
M.K. Garg ◽  
Kamla Malik ◽  
Shikha Mehta
Keyword(s):  
Biogas Production ◽  
Cattle Dung ◽  
Paddy Straw

scholarly journals Effect of Pleurotus florida on paddy straw digestibility and biogas production

2012 ◽  
Vol 6 (1) ◽  
pp. 14-19 ◽  
Author(s):  
Urmila Gupta Phutela ◽  
Karamjeet Kaur ◽  
Madhurama Gangwar ◽  
NK Khullar
Keyword(s):  
Incubation Period ◽  
Biogas Production ◽  
Biological Pretreatment ◽  
Paddy Straw ◽  
Efficient Utilization ◽  
Pleurotus Florida ◽  
Production Studies ◽  
Pretreatment Period ◽  
Incubation Periods

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

scholarly journals Comparative evaluation of different pretreatment methods on biogas production from paddy straw

2017 ◽  
Vol 9 (3) ◽  
pp. 1525-1533
Author(s):  
Vishwas Garg ◽  
Rouf Ahmad Dar ◽  
Urmila Gupta Phutela
Keyword(s):  
Comparative Evaluation ◽  
Biogas Production ◽  
Silica Content ◽  
Paddy Straw ◽  
Maximum Increase ◽  
Enzymatic Pretreatment ◽  
Naoh Pretreatment ◽  
Fungal Pretreatment ◽  
Pre Treatment ◽  
Potential Methods

The present investigations observed the effect of chemical, enzymatic, biological and micro-wave pretreatment on paddy straw for enhancement of biogas production. Chopped and soaked paddy straw was subjected to chemicals Na2CO3 (1%) and NaOH (2%) concentrations, microwave irradiation (720 watt, 30 min), fungal (spawn impregnated, 7 days) and crude silicase (24 hrs) pretreatment. The proximate and chemical analysis showed 16.0% and 12.1% reduction in lignin and silica content in the case of Na2CO3 pretreated paddy straw whereas 23.0% and 46.8% reduction was observed in enzymatic pretreatment with 43.7% and 31.1% enhancement in biogas production respectively. This clearly indi-cates that Pleurotus ostreatus MTCC 142 is silicolytic as well as ligninolytic in nature. Enzymatic pre-treatment was also compared with, microwave (30 min) and fungal pretreatment which showed 31.2% and 32.8% reduction in silica content enhancing biogas production by 19.7% and 42.6% respectively. NaOH pretreatment showed a maximum increase in biogas production i.e. 49.7% as compared to 1% pretreated sample which showed 28.5% enhancement. The results indicated that the NaOH pretreatment was one of the potential methods to increase biogas production of paddy straw.

Sign in / Sign up

Export Citation Format

Share Document