Effect of pyrolysis temperature on the composition of DOM in manure-derived biochar

Gui, Xiangyang; Liu, Chen; Li, Feiyue; Wang, Jianfei

doi:10.1016/j.ecoenv.2020.110597

Cited by 84 publications

(15 citation statements)

References 60 publications

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“…Feedstock materials and pyrolysis temperature are important factors significantly affecting the biochar properties (Qian et al, 2016). It was reported that biochar characteristics varied with different feedstocks, while high pyrolysis temperature generally resulted in increased stability in environment, high biochar surface area, pH, and mineral nutrient contents but low N content, DOC contents, and nutrient availability for plant uptake (Gui et al, 2020; Zhang et al, 2017). Previous studies have reported that biochar is effective at sequestering carbon and increasing soil carbon sinks as a result of its high carbon percentage and stability (Wei et al, 2019; Yang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis temperature and feedstock alter the functional groups and carbon sequestration potential of Phragmites australis‐ and Spartina alterniflora‐derived biochars

Wang

Bai

et al. 2021

GCB Bioenergy

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Biochar produced by pyrolysis of biomass under oxygen‐limited conditions has recently attracted increasing attention. To investigate the effects of feedstock and pyrolysis temperature on biochar characteristics, Phragmites australis straw and Spartina alterniflora straw were used to produce biochars at different temperatures from 300 to 500°C with an increment of 50°C. The biochars were characterized by their yields, ash contents, elemental compositions (i.e., carbon [C], hydrogen [H], oxygen [O], and nitrogen [N]), functional groups, dissolved organic carbon (DOC) contents, carbon sequestration potential, higher heating values (HHVs), and production costs. The results illustrated that pyrolysis temperature negatively affected biochar yields, H and O contents. In contrast, biochar produced at high temperature showed high ash contents, C contents, HHVs, and stronger aromaticity with low H/C and O/C ratios. In addition, S. alterniflora‐derived biochar (SB) contained higher ash content but lower C/H/N/O contents and HHVs than P. australis‐derived biochar (PB; p < 0.05). In addition, DOC contents in both SB and PB declined as temperature increased, and SB exhibited higher DOC contents than PB. Fourier transform infrared spectroscopy showed that absorption intensities of –OH, C=O, –CH, and –C–O–C‐stretching vibration declined with increasing temperature. The stability of the biochars was enhanced at high temperatures, and the biochar derived from S. alterniflora at 500°C might have a better carbon sequestration potential according to thermogravimetric analysis. Additionally, cost analysis showed that the production cost of biochar with large‐scale reactor was lower than that with bench‐scale reactor, and SB had a higher cost than PB due to the price of feedstock and drying process for the former. Our results could offer effective information on resource utilization of P. australis and S. alterniflora straw and are valuable for optimizing pyrolysis temperature to tune P. australis and S. alterniflora biochar properties for specific environmental usage.

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Section: Introductionmentioning

confidence: 99%

Pyrolysis temperature and feedstock alter the functional groups and carbon sequestration potential of Phragmites australis‐ and Spartina alterniflora‐derived biochars

Wang

Bai

et al. 2021

GCB Bioenergy

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“…C-H stretching of the aromatic structures indicates high aromaticity, owing to which they are not easily decomposed [ 42 ]. A similar study revealed structural changes in the DOM as the pyrolysis temperature increased; the order of peak changes was polysaccharide C-O > lipid group C=O > carboxyl group C=O > aromatic ring C-H > aromatic ring C=C [ 43 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of Pyrolysis Temperature on the Characterisation of Dissolved Organic Matter from Pyroligneous Acid

et al. 2021

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Dissolved organic matter (DOM) greatly influences the transformation of nutrients and pollutants in the environment. To investigate the effects of pyrolysis temperatures on the composition and evolution of pyroligneous acid (PA)-derived DOM, DOM solutions extracted from a series of PA derived from eucalyptus at five pyrolysis temperature ranges (240–420 °C) were analysed with Fourier transform infrared spectroscopy, gas chromatography–mass spectroscopy, and fluorescence spectroscopy. Results showed that the dissolved organic carbon content sharply increased (p < 0.05) with an increase in pyrolysis temperature. Analysis of the dissolved organic matter composition showed that humic-acid-like substances (71.34–100%) dominated and other fluorescent components (i.e., fulvic-acid-like, soluble microbial by-products, and proteinlike substances) disappeared at high temperatures (>370 °C). The results of two-dimensional correlation spectroscopic analysis suggested that with increasing pyrolysis temperatures, the humic-acid-like substances became more sensitive than other fluorescent components. This study provides valuable information on the characteristic evolution of PA-derived DOM.

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“…[19] The outer surface of the cucurbit[n]uril is composed of a large number of nitrogen atoms and carbon atoms and the cavity has a certain degree of hydrophobicity that can form a stable host-guest inclusion complex with a guest molecule via non-bonding interactions, such as hydrogen bonds, van der Waals forces and ionic dipoles. [20][21][22][23][24][25][26][27] It has been proved that cucurbit[n]urils can be used as non-toxic and safe drug carriers, [28][29][30] among which cucurbit [8]uril (Q [8]) [31] has a large cavity with certain application value in increasing the solubility, [32] stability [33] and release rate [34] of drug molecules. However, research studies on using cucurbit[n]urils as a drug carrier for chloramphenicol have not been reported to date.…”

Section: Urils (B)mentioning

confidence: 99%

Host-guest interaction and properties of cucurbit[8]uril with chloramphenicol

Zhang¹,

Zheng²,

Luo³

et al. 2021

Preprint

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The interaction between cucurbit[8]uril (Q[8]) and chloramphenicol (CPE) was investigated using single-crystal X-ray diffraction, spectroscopy, isothermal titration calorimetry (ITC) and UV-Vis, NMR and IR spectroscopy. The effects of Q[8] on the stability, in vitro release performance and antibacterial activity of CPE were also studied. The results showed that CPE and Q[8] formed a 1:1 inclusion complex (CPE@Q[8]) with an inclusion constant of 5.4736 × 105 L/mol. The intervention of Q[8] did not affect the stability of CPE, but obviously reduced the release rate of CPE in artificial gastric and intestinal juice; Q[8] has a slow-release effect on CPE. The antibacterial results showed that the minimum inhibitory concentration (MIC) of CPE and CPE@Q[8] toward Escherichia coli (E. coli) was 1.5 × 10–3 and 1.0 × 10–3 mol/L, respectively, and toward Staphylococcus aureus (SA), the MIC was 2.0 × 10–3 mol/L for both CPE and CPE@Q[8]. Therefore, Q[8] enhanced the inhibitory activity of CPE against E. coli.

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Effect of pyrolysis temperature on the composition of DOM in manure-derived biochar

Cited by 84 publications

References 60 publications

Pyrolysis temperature and feedstock alter the functional groups and carbon sequestration potential of Phragmites australis‐ and Spartina alterniflora‐derived biochars

Pyrolysis temperature and feedstock alter the functional groups and carbon sequestration potential of Phragmites australis‐ and Spartina alterniflora‐derived biochars

Effect of Pyrolysis Temperature on the Characterisation of Dissolved Organic Matter from Pyroligneous Acid

Host-guest interaction and properties of cucurbit[8]uril with chloramphenicol

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