Biostimulation of Anaerobic Digestion Using Iron Oxide Nanoparticles (IONPs) for Increasing Biogas Production from Cattle Manure
The effect of synthesised IONPs employing a nontoxic leaf extract of <i>Azadirachta indica</i> as a reducing, capping, and stabilizing agent for increasing biogas and methane output from cattle manure during anaerobic digestion (AD) was investigated in this study. Furthermore, the UV-vis...
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MDPI AG
2022-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/3/497 |
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| author | Dilbag Singh Kamla Malik Meena Sindhu Nisha Kumari Vijaya Rani Shikha Mehta Karmal Malik Poonam Ranga Kashish Sharma Neeru Dhull Shweta Malik Nisha Arya |
| author_facet | Dilbag Singh Kamla Malik Meena Sindhu Nisha Kumari Vijaya Rani Shikha Mehta Karmal Malik Poonam Ranga Kashish Sharma Neeru Dhull Shweta Malik Nisha Arya |
| author_sort | Dilbag Singh |
| collection | DOAJ |
| description | The effect of synthesised IONPs employing a nontoxic leaf extract of <i>Azadirachta indica</i> as a reducing, capping, and stabilizing agent for increasing biogas and methane output from cattle manure during anaerobic digestion (AD) was investigated in this study. Furthermore, the UV-visible spectra examination of the synthesized nanoparticles revealed a high peak at 432 nm. Using a transmission electron microscope, the average particle size of IONPs observed was 30–80 nm, with irregular, ultra-small, semi-spherical shapes that were slightly aggregated and well-distributed. IONPs had a polydisparity index (PDI) of 219 nm and a zeta potential of −27.0 mV. A set of six bio-digesters were fabricated and tested to see how varying concentrations of IONPs (9, 12, 15, 18, and 21 mg/L) influenced biogas, methane output, and effluent chemical composition from AD at mesophilic temperatures (35 ± 2 °C). With 18 mg/L IONPs, the maximum specific biogas and methane production were 136.74 L/g of volatile solids (VS) and 64.5%, respectively, compared to the control (<i>p</i> < 0.05), which provided only 107.09 L/g and 51.4%, respectively. Biogas and methane production increased by 27.6% and 25.4%, respectively using 18 mg/L IONPs as compared to control. In all treatments, the pH of the effluent was increased, while total volatile fatty acids, total solids, volatile solids, organic carbon content, and dehydrogenase activity decreased. Total solid degradation was highest (43.1%) in cattle manure + 18 mg/L IONPs (T5). According to the results, the IONPs enhanced the yield of biogas and methane when compared with controls. |
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| last_indexed | 2024-03-09T23:23:31Z |
| publishDate | 2022-01-01 |
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| series | Nanomaterials |
| spelling | doaj.art-87bbc36e33e54378ad20a3ee3f82f9b42023-11-23T17:21:44ZengMDPI AGNanomaterials2079-49912022-01-0112349710.3390/nano12030497Biostimulation of Anaerobic Digestion Using Iron Oxide Nanoparticles (IONPs) for Increasing Biogas Production from Cattle ManureDilbag Singh0Kamla Malik1Meena Sindhu2Nisha Kumari3Vijaya Rani4Shikha Mehta5Karmal Malik6Poonam Ranga7Kashish Sharma8Neeru Dhull9Shweta Malik10Nisha Arya11Department of Microbiology, CCS Haryana Agricultural University, Hisar 125004, IndiaDepartment of Microbiology, CCS Haryana Agricultural University, Hisar 125004, IndiaDepartment of Microbiology, CCS Haryana Agricultural University, Hisar 125004, IndiaDepartment of Biochemistry, CCS Haryana Agricultural University, Hisar 125004, IndiaDepartment of Farm Machinery and Power Engineering, CCS Haryana Agricultural University, Hisar 125004, IndiaDepartment of Microbiology, CCS Haryana Agricultural University, Hisar 125004, IndiaDepartment of Agronomy, CCS Haryana Agricultural University, Hisar 125004, IndiaDepartment of Microbiology, CCS Haryana Agricultural University, Hisar 125004, IndiaDepartment of Microbiology, CCS Haryana Agricultural University, Hisar 125004, IndiaDepartment of Microbiology, CCS Haryana Agricultural University, Hisar 125004, IndiaDepartment of Agronomy, CCS Haryana Agricultural University, Hisar 125004, IndiaDepartment of Textile and Apparel Designing, CCS Haryana Agricultural University, Hisar 125004, IndiaThe effect of synthesised IONPs employing a nontoxic leaf extract of <i>Azadirachta indica</i> as a reducing, capping, and stabilizing agent for increasing biogas and methane output from cattle manure during anaerobic digestion (AD) was investigated in this study. Furthermore, the UV-visible spectra examination of the synthesized nanoparticles revealed a high peak at 432 nm. Using a transmission electron microscope, the average particle size of IONPs observed was 30–80 nm, with irregular, ultra-small, semi-spherical shapes that were slightly aggregated and well-distributed. IONPs had a polydisparity index (PDI) of 219 nm and a zeta potential of −27.0 mV. A set of six bio-digesters were fabricated and tested to see how varying concentrations of IONPs (9, 12, 15, 18, and 21 mg/L) influenced biogas, methane output, and effluent chemical composition from AD at mesophilic temperatures (35 ± 2 °C). With 18 mg/L IONPs, the maximum specific biogas and methane production were 136.74 L/g of volatile solids (VS) and 64.5%, respectively, compared to the control (<i>p</i> < 0.05), which provided only 107.09 L/g and 51.4%, respectively. Biogas and methane production increased by 27.6% and 25.4%, respectively using 18 mg/L IONPs as compared to control. In all treatments, the pH of the effluent was increased, while total volatile fatty acids, total solids, volatile solids, organic carbon content, and dehydrogenase activity decreased. Total solid degradation was highest (43.1%) in cattle manure + 18 mg/L IONPs (T5). According to the results, the IONPs enhanced the yield of biogas and methane when compared with controls.https://www.mdpi.com/2079-4991/12/3/497biogas productionanaerobic digestionmethanecattle manureiron oxide nanoparticles<i>Azadirachta indica</i> |
| spellingShingle | Dilbag Singh Kamla Malik Meena Sindhu Nisha Kumari Vijaya Rani Shikha Mehta Karmal Malik Poonam Ranga Kashish Sharma Neeru Dhull Shweta Malik Nisha Arya Biostimulation of Anaerobic Digestion Using Iron Oxide Nanoparticles (IONPs) for Increasing Biogas Production from Cattle Manure Nanomaterials biogas production anaerobic digestion methane cattle manure iron oxide nanoparticles <i>Azadirachta indica</i> |
| title | Biostimulation of Anaerobic Digestion Using Iron Oxide Nanoparticles (IONPs) for Increasing Biogas Production from Cattle Manure |
| title_full | Biostimulation of Anaerobic Digestion Using Iron Oxide Nanoparticles (IONPs) for Increasing Biogas Production from Cattle Manure |
| title_fullStr | Biostimulation of Anaerobic Digestion Using Iron Oxide Nanoparticles (IONPs) for Increasing Biogas Production from Cattle Manure |
| title_full_unstemmed | Biostimulation of Anaerobic Digestion Using Iron Oxide Nanoparticles (IONPs) for Increasing Biogas Production from Cattle Manure |
| title_short | Biostimulation of Anaerobic Digestion Using Iron Oxide Nanoparticles (IONPs) for Increasing Biogas Production from Cattle Manure |
| title_sort | biostimulation of anaerobic digestion using iron oxide nanoparticles ionps for increasing biogas production from cattle manure |
| topic | biogas production anaerobic digestion methane cattle manure iron oxide nanoparticles <i>Azadirachta indica</i> |
| url | https://www.mdpi.com/2079-4991/12/3/497 |
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