Biological pretreatment of corn straw for enhancing degradation efficiency and biogas production

Li, Pan-Pan; He, Chao; Li, Gang; Ding, Pan; Lan, Mingming; Gao, Zan; Jiao, Youzhou

doi:10.1080/21655979.2020.1733733

Cited by 81 publications

(32 citation statements)

References 27 publications

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“…Compared to the raw feedstock that contained 46.16% (dry basis) cellulose, the digested feedstock cellulose content dropped to 38.02%, 36.03%, and 34.45%, for methods 1, 2, and 3 operations, respectively, which was 17.64%, 21.95%, and 25.37% decrease; similarly, the hemicellulose content showed 46.48%, 54.55%, and 57.19% decrease for methods 1, 2, and 3 operations, respectively. The degradation rates were comparable to a previous study, which showed 44.4% and 34.9% degradation rates for hemicellulose and cellulose, respectively [ 36 ]. Degradation of cellulose and hemicellulose largely determines the methane yield of corn stover, as the other organic components, such as protein and extractives, are usually low in corn stover [ 31 ].…”

Section: Resultssupporting

confidence: 88%

Comparison of Operating Methods in Cartridge Anaerobic Digestion of Corn Stover

2021

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Anaerobic digestion of lignocellulosic biomass faces changes such as biomass floating and effluent discharge. To overcome these challenges, a unique removable cartridge anaerobic digester was built and tested using corn stover as the feedstock. Three operating methods differing in the number of cartridges and days of rotation were tested. The first method used three cartridges, with each cartridge being rotated every 7 days. The second and third methods employed four cartridges, with cartridges being rotated every 7 and 9-10 days, respectively. The retention time for methods 1, 2, and 3 was 21, 28, and 38 days, respectively. After observation spanning 1 year, it was found that the cartridge digester was capable of generating a stable amount of biogas for energy without biomass floating or effluent discharging issues. The average daily methane yield from each method was 7.57, 7.11, and 6.82 L/day/kg-VS, and the cumulative methane yield was 158. 95, 199.04, and 259.00 L/kg-VS, respectively. Ammonium nitrogen and pH values were in normal ranges throughout the experiment. This study provided new knowledge in operating and optimizing this cartridge digester, which may be broadly used for the anaerobic digestion of lignocellulosic biomass in the near future.

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Section: Resultssupporting

confidence: 88%

Comparison of Operating Methods in Cartridge Anaerobic Digestion of Corn Stover

2021

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“…where the degradation of the surface and of the physico-chemical structure was not really as on Myrothecium verrucaria (MV). Similar results were obtained or observed in [14 ] , [15 ] , [ 16] , [ 17] , [ 18], [ 19] , [20 ].…”

Section: Discussionsupporting

confidence: 90%

The Effects of <em>Myrothecium verrucaria</em> (MV) on Corn Stover During Co-Composting Process Under Room Temperature Conditions

Hopla¹,

Yao²,

Lei³

et al. 2021

Preprint

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In China, the production of crop straw has been estimated to be approximately 800 Million tons yearly of which about 40% was burned. Corn stover is one of the main agricultural wastes in China. It has shown that lignin in corn stover could be effectively removed byMyrothecium verrucaria. The effects of the pretreatment of corn strover by Myrothecium verrucaria on compost were studied. The results showed that corn stover pretreatment by Myrothecium verrucaria, the Cellulose, Hemicellulose, and lignin were degraded and the results were 33.43%, 11.53% and 18.70% respectively. Scanning electron microscope (SEM) analysis showed that the surface structure of corn stover was changed. Fourier transform infrared spectroscopy (FTIR) analysis showed that the degradation products of lignin were increased. The exposed area of cellulose and hemicellulose was increased. Compared with the control group, the pH value was stable and the temperature was higher. The content of nitrogen in the material decreased, while the contents of total phosphorus and total potassium increased.The C/N ratio of materials decreased after composting.The results showed that the pretreatment of Myrothecium verrucaria improve the degradation of lignocelluloses, a great contribution was made to reduce the causes loss of plant nutrient and to fight against environmental pollution.

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“…under anaerobic conditions (Kana et al, 2012). Various other gases are also produced which can be further used in different synthesis processes (Li et al, 2020;Senés-Guerrero et al, 2019). In comparison to their bulk counterparts, nanomaterials with excellent structural and morphological properties significantly enhance the methane production.…”

Section: Biofuels: a Sustainable Energy Sourcementioning

confidence: 99%

Fabrication and Optimization of Nanocatalyst for Biodiesel Production: An Overview

et al. 2020

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Necessity and exploitation of fossil fuel products are implacable in serving the needs of humanity despite being a finite and limited resource. To meet the thrust of energy, biofuels derived from varieties of renewable resources are imperative in fulfilling the demand of renewable fuels on a large scale without creating environmental concerns. Biofuels are inevitably the result of the carbon fixation process which stores chemical energy, ultimately reducing the total amount of carbon dioxide. Different kinds of biofuels like bioethanol, biomethanol, biogas, and biodiesel are derived depending on varieties of feedstock materials. Among these, production of biodiesel augments the progression of clean and renewable fuel. In this review, we have discussed the production of biodiesel derived from various feedstock and using several processes like pyrolysis, direct blending, micro-emulsion, and trans-esterification, with critical discussion focussing on increasing biodiesel production using nanocatalysts. Biodiesel production mainly proceeds through homogenous and heterogeneous catalysis via trans-esterification method. The review further discusses the significance of nanocatalyst in heterogeneous catalysis based trans-esterification for large scale biodiesel production. With the advent of nanotechnology, designing and modification of nanocatalyst gives rise to attractive properties such as increased surface area, high thermal stability, and enhanced catalytic activity. The role of nanocatalysts have been extensively studied and investigated in regard to the increased biodiesel production. Along with the modification of nanocatalysts, we have briefly discussed the physico-chemical properties and the role of the optimization parameters as it plays a pivotal role in enhancing the biodiesel production commercially.

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Biological pretreatment of corn straw for enhancing degradation efficiency and biogas production

Cited by 81 publications

References 27 publications

Comparison of Operating Methods in Cartridge Anaerobic Digestion of Corn Stover

Comparison of Operating Methods in Cartridge Anaerobic Digestion of Corn Stover

The Effects of <em>Myrothecium verrucaria</em> (MV) on Corn Stover During Co-Composting Process Under Room Temperature Conditions

Fabrication and Optimization of Nanocatalyst for Biodiesel Production: An Overview

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