Pyrolysis of crop residues in a mobile bench-scale pyrolyser: Product characterization and environmental performance

Bian, Rongjun; Ma, Biao; Zhu, Xiuyue; Wang, Weijin; Li, Lianqing; Joseph, Stephen; Liu, Xiaoyu; Pan, Genxing

doi:10.1016/j.jaap.2016.03.018

Cited by 64 publications

(21 citation statements)

References 37 publications

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“…The primary reason was that relatively small portion of labile C in fresh biochar was decomposed by microorganisms during the early stages of incubation. More labile C fractions (containing higher H/C) existed in the fresh biochar, especially for biochar that was made at lower pyrolysis temperatures (Bian et al, ; Liu et al, ; Mukherjee, Zimmerman, & Harris, ). They can be utilized more easily by soil microorganisms over short periods (Chen et al, ).…”

Section: Discussionmentioning

confidence: 99%

The responses of soil organic carbon mineralization and microbial communities to fresh and aged biochar soil amendments

et al. 2019

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While biochar soil amendment has been widely proposed as a soil organic carbon (SOC) sequestration strategy to mitigate detrimental climate changes in global agriculture, the SOC sequestration was still not clearly understood for the different effects of fresh and aged biochar on SOC mineralization. In the present study of a two‐factorial experiment, topsoil samples from a rice paddy were laboratory‐incubated with and without fresh or aged biochar pyrolyzed of wheat residue and with and without crop residue‐derived dissolved organic matter (CRM) for monitoring soil organic matter decomposition under controlled conditions. The six treatments included soil with no biochar, with fresh biochar and with aged biochar treated with CRM, respectively. For fresh biochar treatment, the topsoil of a same rice paddy was amended with wheat biochar directly from a pyrolysis wheat straw, the soil with aged biochar was collected from the same soil 6 years following a single amendment of same biochar. Total CO2 emission from the soil was monitored over a 64 day time span of laboratory incubation, while microbial biomass carbon and phospholipid fatty acid (PLFA) were determined at the end of incubation period. Without CRM, total organic carbon mineralization was significantly decreased by 38.8% with aged biochar but increased by 28.9% with fresh biochar, compared to no biochar. With CRM, however, the significantly highest net carbon mineralization occurred in the soil without biochar compared to the biochar‐amended soil. Compared to aged biochar, fresh biochar addition significantly increased the total PLFA concentration by 20.3%–33.8% and altered the microbial community structure by increasing 17:1ω8c (Gram‐negative bacteria) and i17:0 (Gram‐positive bacteria) mole percentages and by decreasing the ratio of fungi/bacteria. Furthermore, biochar amendment significantly lowered the metabolic quotient of SOC decomposition, thereby becoming greater with aged biochar than with fresh biochar. The finding here suggests that biochar amendment could improve carbon utilization efficiency by soil microbial community and SOC sequestration potential in paddy soil can be enhanced by the presence of biochar in soil over the long run.

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Section: Discussionmentioning

confidence: 99%

The responses of soil organic carbon mineralization and microbial communities to fresh and aged biochar soil amendments

et al. 2019

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“…Therefore, biochars without a removal of their labile OC fraction could exert greater benefits for crop productivity and soil nutrient retention especially of phosphorus though extraction did not cause a significant change in reduction of overall greenhouse gas emission. Otherwise, the labile OC could be extracted for foliar use and leave the extracted biochar to be used for soil metal immobilization 45 .…”

Section: Discussionmentioning

confidence: 99%

Extractable pool of biochar controls on crop productivity rather than greenhouse gas emission from a rice paddy under rice-wheat rotation

Korai

Xia

Liu

et al. 2018

Sci Rep

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The role of extractable pool of biochar in crop productivity and soil greenhouse gas (GHGs) emission is not yet clear. In this study, two biochars with and without extraction was added to a paddy before rice transplantation at 20 t·ha−1. Crop yield, plant traits and greenhouse gas emission monitored throughout a rice-wheat rotation. Between the biochar treatments, changes in bulk density and microbial biomass carbon were insignificant. However, the increase in organic carbon was similar between maize and wheat biochars while higher under bulk wheat biochar than extracted one. The increase in available P and K was higher under wheat than maize biochar regardless of extraction. Moreover, the increase in plant traits and grain yield, in rice season only, was higher under bulk than extracted biochars. Yet, there was no difference in changes in GHGs emission between bulk and extracted biochars regardless of feedstock. Nevertheless, increased methane emission for rice season was lower under extracted biochars than bulk ones. Overall, crop productivity rather than GHGs emission was affected by treatment of extraction of biochars. Thus, use of unextracted biochar is recommended for improving soil crop productivity in the paddy soils.

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“…Apart from this, the fine texture of biomass may also result in porous and nonporous material that can be used for various purposes such as anode for lithium ion batteries, filters, and fillers (Caglar et al., 2016; Sun et al., 2013). Especially the porosity of the remaining solid products is affected by the release of volatiles and chemical (Bian et al., 2016).…”

Section: Introductionmentioning

confidence: 99%

The pyrolysis of industrial alliaceous plant wastes: Illustration of process and characterization of products

Çağlar

Aydınlı

2018

Energy Exploration & Exploitation

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Biomass is one of the renewable energy and material sources. Agricultural biomass wastes are in top list in terms of quantity and uniformity. The stalks, leafs, and peels of them have taken considerable attention for various purposes. The biomass and wastes in recycling of matter and recuperation of chemicals with thermochemical conversion techniques are an efficient way in environmental perspective. The alliaceous plant reaches huge amount and its peels take attention in terms of difficulty of recycling with potential valuable compounds like its pulp. Here the pyrolysis of this garlic peel wastes was accomplished to obtain various valuable solid and liquid products that were analyzed with miscellaneous methods (thermogravimetric analysis/differential thermal analysis, gas chromatography/mass spectrometry, and scanning electron microscope). Three basic zones were appeared in thermal analysis for pyrolysis process. The valorization of these wastes to obtain precious chemicals and combustible compounds equivalent to petroleum products was illustrated by this way. Also carbonaceous compounds have been sequestered in solid and liquid forms by this way. The main fuel additives, methanol was obtained in remarkable amount (22.5%) from the liquid products. Also, porous material was produced from the solid products.

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Pyrolysis of crop residues in a mobile bench-scale pyrolyser: Product characterization and environmental performance

Cited by 64 publications

References 37 publications

The responses of soil organic carbon mineralization and microbial communities to fresh and aged biochar soil amendments

The responses of soil organic carbon mineralization and microbial communities to fresh and aged biochar soil amendments

Extractable pool of biochar controls on crop productivity rather than greenhouse gas emission from a rice paddy under rice-wheat rotation

The pyrolysis of industrial alliaceous plant wastes: Illustration of process and characterization of products

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