Synergistic effect of alkaline pretreatment and magnetite nanoparticle application on biogas production from rice straw

Agricultural residues have high potential for biogas production, complex lignocellulosic structure is however the main hindrance in their bioconversion. This research focuses on combined effect of alkaline pretreatment of rice straw and magnetite (Fe3O4) nanoparticle application. Four doses of magnetite nanoparticles viz. 60, 80, 100 and 120 ppm were used in the anaerobic digestion of untreated and 2% NaOH pretreated rice straw. Compared to control, 2% NaOH pretreatment alone increased biogas and methane yield by 57 and 60% respectively. Magnetite nanoparticle (MNP) application alone gave maximum yield at 100 ppm which consisted of 37 and 33% more biogas and methane yield respectively. Combining the effect of 2% NaOH pretreatment and 120 ppm MNPs synergistically increased biogas and methane yield by 100 and 129% as compared to control. In addition, an energy assessment indicated a positive net gain of 3765 kJ for 2% NaOH pretreated rice straw with 120 ppm MNPs.

Download Full-text

Hydrothermal, acidic, and alkaline pretreatment of waste flower-mix for enhanced biogas production: a comparative assessment

Biomass Conversion and Biorefinery ◽

10.1007/s13399-021-01607-6 ◽

2021 ◽

Author(s):

Avantika Agarwal ◽

Kunwar Paritosh ◽

Pragati Dangayach ◽

Priyanka Gehlot ◽

Nidhi Pareek ◽

...

Keyword(s):

Biogas Production ◽

Comparative Assessment ◽

Alkaline Pretreatment

Download Full-text

Effect of initial pH on anaerobic co-digestion of Salvinia molesta and rice straw for biogas production and kinetics

Biocatalysis and Agricultural Biotechnology ◽

10.1016/j.bcab.2018.10.007 ◽

2018 ◽

Vol 16 ◽

pp. 594-603 ◽

Cited By ~ 15

Author(s):

Iqbal Syaichurrozi ◽

Suhirman Suhirman ◽

Topik Hidayat

Keyword(s):

Rice Straw ◽

Biogas Production ◽

Salvinia Molesta ◽

Initial Ph

Download Full-text

STUDY OF THE POTENTIAL ANAEROBIC CO-DIGESTION FOR BIOGAS PRODUCTION FROM SALVINIA MOLESTA AND RICE STRAW

Jurnal Bahan Alam Terbarukan ◽

10.15294/jbat.v6i1.9017 ◽

2017 ◽

Vol 6 (1) ◽

pp. 61-67

Author(s):

Iqbal Syaichurrozi

Keyword(s):

Rice Straw ◽

Room Temperature ◽

Fermentation Process ◽

Biogas Production ◽

Rumen Fluid ◽

Salvinia Molesta ◽

Initial Ph

The purpose of this research was to analyze the biogas production from co-digestion of Salvinia molesta and rice straw. Ratio of Salvinia molesta and rice straw was 5:0, 4:1, 3:2. Lab-scale-batch digesters (600 mL) were operated at room temperature (30 oC) and pressure of 1 atm. Total basis of Salvinia molesta and rice straw was 10 gr, water was added with ratio of organic matter:water = 1:7 (w/w), rumen fluid was added as inoculum, initial pH was adjusted to be 7. Fermentation process was conducted for 30 days. The results showed that total biogas volume for ratio of 5:0, 4:1, 3:2 was 6.300.00; 32.7618.32; 107.5418.51 mL/g VS respectively. The pH of substrate was changing from 7.00 to 6.770.19; 6.600.14; 6.730.09 for all variables respectively.

Download Full-text