JOURNAL OF THE ENERGY INSTITUTE
·
2022
·
IF 6.47
Ming Zhao,Jun Sun,Muhammad Asif Akhtar,Shu Zhang,Juntao Wei,Deliang Xu,Xun Hu,Mortaza Gholizadeh,Hong Zhang
Waste wood-based panels (WBPs) with high nitrogen content is a typical kind of industrial biomass waste, and a large amount of NO x will be generated during its incineration treatment. Therefore, this work is aimed at studying the retention and conversion characteristics of nitrogen in gasification char of WBPs. For fixing more nitrogen in char, co-gasification experiments of fiberboard (FB, the main kind of WBPs) and glucose were carried out using a fixed bed reactor , and the subsequent analysis was conducted by element analyzer, XPS , SEM and BET. The results show that the addition of glucose could efficiently fix nitrogen in gasification char , the nitrogen retention ratios of FB-glucose char under N 2 and CO 2 atmosphere were 2.6–5.6 times and 1.4–2.0 times greater than that of individual FB char, respectively, due to the enhanced Maillard reaction. As the temperature increased, the portions of N-5 and N-6 decreased along with the formation of N-Q and N–O. Moreover, the addition of glucose led to the delay of the conversion from N-5 and N-6 to N-Q and N–O in char. BET results demonstrate that the surface area and total pore volume of co-gasified char were significantly lower than those of individual FB gasified char. The glucose had a negative effect on the pore structure development of co-gasified char. These results could offer strategies on reducing NO x emission in biomass thermal conversion and regulating nitrogen functional groups in biochar.
研究领域:
能源与环境科学
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生物质转化
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产品关联
DOI
高影响因子
FUEL
·
2023
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IF 7.4
Jinchuan Wang,Li Zhang,Jinping Weng,Juntao Wei,Deliang Xu,Bin Li,Shu Zhang,Mortaza Gholizadeh,Electo Silva Lora,Hong Zhang
The retention and transformation of nitrogen in hydrochars prepared from co-hydrothermal carbonization (Co-HTC) of fiberboard (FB) and glucose were mainly investigated in this study. This study showed that more than 90 wt% nitrogen has transferred into aqueous solution at 180–220 °C during the hydrothermal carbonization (HTC) of FB. When the HTC temperatures were higher than 220 °C, some dissolved nitrogen recombined into hydrochars due to the enhancement of nitrogen fixation reactions (Maillard reactions). The addition of glucose could significantly increase nitrogen retention rate in hydrochars, which was due to abundant oxygen-containing intermediates (5-HMF, furfural, etc.) formed in aqueous phase by the hydrothermal decomposition of glucose. Besides, the hydrochars with more microspheres formed on the surface could apparently enhance nitrogen fixation due to the increased contacting area. In Co-HTC, the temperature range of 220–280 °C favored the nitrogen retention in hydrochars. Additionally, nitrogen retention rate increased significantly with increasing residence time and mixture ratio of glucose in a certain extent. While the heterocyclic-N was the main nitrogen functional group in hydrochars and it transformed from pyridinic-N, pyrrolic-N to quaternary-N with higher HTC temperatures and longer residence times, additionally, some amine-N was clearly formed when the nitrogen returned from the aqueous phase into hydrochars.
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
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2019
·Vol. 44
·期 2
·1167-1178
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IF 3.343
Weimin Chen,Min Luo,Xin Wang,Kai Yang,Xiaoyan Zhou
Summary It is a great challenge to simultaneously achieve high yield, high nitrogen retention, and low cost for chitin-based porous carbons (PCs) while obtaining highly porous structure. Herein, copper (II) chloride dihydrate (CuCl 2 2H 2 O) is innovatively used as the microwave absorber and also porogen for direct synthesis of PCs from chitin via microwave heating. A very short duration of 10 minutes is achieved for this synthesis, because microwave irradiation renders a rapid heating rate of 126°C min −1 during the initial 5 minutes. In addition, the melted CuCl 2 wraps the chitin to preserve its overall structure during synthesis, thus obtaining a yield as high as 36% and a nitrogen retention up to 5.2%. Furthermore, a low temperature of about 600°C that triggers the redox reactions of CuCl 2 into Cu to achieve well-developed porous structure (specific surface area up to 1535 m 2 g −1 ) is observed, suggesting a merit of low cost for this synthesis. The PC-based electrode exhibits not only a high specific capacitance of 227 F g −1 at 0.5 A g −1 in 6 mol L −1 KOH electrolyte but also a good rate capability with a high capacitance retention of 67.7% even at an ultra-high current density of 50 A g −1 . Owing to these promising capacitive performances of PCs, the fabricated supercapacitor can remain 70.1% of the energy density when the power density was dramatically increased by 20 times.
研究领域:
材料科学
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能源技术
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化学工程
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
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2020
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IF 3.421
Deliang Xu,Liu Yang,Ming Zhao,Mengyao Guo,Xun Hu,Mortaza Gholizadeh,Hong Zhang,Shu Zhang
The fiberboard waste with about 10% adhesive as bonding materials will release a large amount of NOx into the atmosphere when being used for energy resources. To mitigate the emission, it is desirable to convert the waste biomass into material-based products, so that the N species could be possibly retained in the solids without being emitted into the air. Thus, this study aims to examine the effects of glucose addition on the N retention and migration in chars during the copyrolysis with fiberboard wastes, especially considering the N-doped solid char as a potential high value functional carbon material. The pyrolysis experiments were mainly conducted in a fixed-bed quartz reactor at various temperatures, and the resultant chars were subjected to XPS analysis and other characterizations. It was found that the introduction of glucose has significantly increased the N retentions by 2–3 times at all the examined temperatures compared to the pyrolysis of fiberboard alone. During the copyrolysis, the relative abundance of amine-N in char at 400 °C has greatly decreased, while 500 °C has seen only N-5 and N-6 remaining in the char. Therefore, the copyrolysis of fiberboard waste and glucose could considerably enhance the N retentions in chars as well as vary the transformation of N occurring forms by the reactions between the adhesive-derived volatiles and the O-containing groups from the decomposition of glucose.
研究领域:
环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
RENEWABLE ENERGY
·
2022
·
IF 8.634
Liu Yang,Mengyao Guo,Yiwen Qian,Deliang Xu,Mortaza Gholizadeh,Karnowo,Hong Zhang,Xun Hu,Shu Zhang
This study aims to examine the capability of nascent glucose-derived char on absorbing and solidifying N-containing gas species from the pyrolysis of fiberboard . A specially designed double-bed quartz reactor was used to carry out the experimental work. The N chemical forms and carbon structure in chars were characterized using XPS and Raman techniques, respectively. The results clearly indicate that the glucose char could effectively retain N-containing volatiles, especially at low temperatures due to its high content in O functional groups. The occurring forms of N inherently existing in fiberboard-derived char showed different transforming patterns from those in the glucose chars where the N compounds (e.g., amide-N) were externally obtained by intensive volatile-char interactions. The in-situ DRIFT analysis showed that the amino groups released from fiberboard may react with the aldehyde groups containing in the glucose char and form N-doped aromatic rings . Additionally, although the increase in carrier gas (thus decreasing the volatile-char interaction time) did not affect the N retention, the carbon structure revealed by Raman analysis dramatically altered.
研究领域:
能源与环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
AQUACULTURE NUTRITION
·
2019
·Vol. 26
·期 3
·646-656
·
IF 2.098
Hameeda Kalhoro,Shengli Tong,Lei Wang,Qingjun Shao
Taurine is a component that tends to be deficient in fish diets that contain higher plant-derivative proteins. Acanthopagrus schlegelii juveniles (IBW − 11.28 g) were fed nine diets containing SPC levels (SPC40, SPC60, SPC80 and SPC100), or supplemented with 5 g/kg of taurine at each replacement level. Our results showed higher WGR and SGR in SPC60 + TAU (WGR; 224.67, SGR; 2.10) followed by SPC40 + TAU (WGR; 221.75, SGR; 2.09). Phosphorus retention efficiency was significantly raised as the SPC increased when compared with the control diet. Taurine addition showed an incline in the nitrogen retention efficiency. An effect was observed within FR between fish and the SPC content. ADCs of dry matter, crude lipid and phosphorous were affected by SPC, while taurine addition affected only crude lipid. A significant effect was seen in ash and phosphorus by the SPC and taurine. TAU supplementation showed an increased T-AOC activity in the SPC80 + TAU (1.90), while malondialdehyde and catalase activity were reduced except in completely replaced fish meal groups. It could be concluded that black sea bream can accept the substitution of FM with 60% of SPC while at the inclusion of dietary TAU (5 g/kg) growth could be improved.
研究领域:
水产养殖
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营养学
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海洋生物学
✓ 已验证
产品关联
DOI
高影响因子
Animal Nutrition
·
2024
·
IF 6.1
Jinming Hu,Shuo Zhang,Mengmeng Li,Guangyong Zhao
This study investigated the effects of β-alanine (β-Ala) on ruminal fermentation, nutrient digestibility, nitrogen (N) metabolism, plasma biochemical parameters, and rumen bacterial communities in beef steers. Six steers with initial liveweight of 252.8 ± 5.2 kg and 3 treatments of supplementing with 0, 30, or 60 g β-Ala per day to the basal diet were allocated in a replicated 3 × 3 Latin square design. Each experimental period was 20 d, of which the first 15 d were for adaptation and the subsequent 5 d were for sampling. The results showed that β-Ala linearly increased the ruminal concentration of microbial crude protein (MCP) ( P = 0.002), but it did not affect the ruminal concentrations of ammonia N and total volatile fatty acids ( P > 0.10). β-Ala also linearly increased the dry matter (DM) ( P = 0.009), organic matter (OM) ( P = 0.017) and crude protein (CP) ( P = 0.043) digestibility, tended to decrease the acid detergent fiber digestibility ( P = 0.077), but it did not affect the neutral detergent fiber digestibility ( P = 0.641). β-Ala quadratically increased the relative abundance of ruminal Bacteroidota ( P = 0.021) at the phylum level, and increased Prevotella ( P = 0.028), and Prevotellaceae_UCG-003 ( P = 0.014) and decreased the relative abundance of NK4A214_group ( P = 0.009) at the genus level. Feeding steers with β-Ala linearly increased the urinary N excretion ( P = 0.006) and urea excretion ( P = 0.002) and the N retention ( P = 0.004), but it did not affect the N utilization efficiency ( P = 0.120). β-Ala quadratically increased the plasma concentrations of albumin ( P = 0.048) and linearly increased the plasma concentration of insulin-like growth factor-1 ( P < 0.001) and the total antioxidant capacity ( P = 0.011). In summary, dietary supplementation with β-Ala improved the rumen MCP supply and increased the digestibility of DM, OM, CP and the N retention. Further research is necessary to verify the ruminal degradability of β-Ala and to investigate the mechanism of the impact of absorbed β-Ala on the anti-oxidative ability of the steers.
研究领域:
动物营养学
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微生物学
·
反刍动物生理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）