Characterization and ammonia adsorption of biochar prepared from distillers' grains anaerobic digestion residue with different pyrolysis temperatures

Zheng, Xianqing; Yang, Zhiman; Xu, Xiaohui; Meng, Dong

doi:10.1002/jctb.5340

Cited by 28 publications

(18 citation statements)

References 42 publications

(123 reference statements)

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“…Biochar, pyrogenic black carbon derived from incomplete biomass combustion under anaerobic condition (Zhang and Wang 2016), had various physicochemical properties determined by the feedstock and pyrolysis conditions (Zheng et al 2018). And it was generally characterized by alkaline nature, porous structure, and high hydrophilic characteristic and C/N ratio as well as large specific surface area (Gul et al 2015;Liu et al 2017).…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Response in Physicochemical Properties of Tobacco-Growing Soils and N/P/K Accumulation in Tobacco Plant to Tobacco Straw Biochar

Zheng

Song

Guan

et al. 2020

J Soil Sci Plant Nutr

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The purpose of this study was to investigate the response of physicochemical properties of tobacco-growing soils and N/P/K accumulation of tobacco plant to tobacco straw biochar. Two contrasting tobacco-growing soils of paddy soil (Ultisol in USDA taxonomy) and brown soil (Alfisol in USDA taxonomy) were selected to conduct the pot experiments. Five addition rates (w/w) of tobacco straw biochar of 0%, 1%, 2%, 4%, and 10% without or with tobacco (Nicotiana tabacum) were applied in a greenhouse. The 7.41-35.90% increase of soil field capacity, 0.71-15.11% increase of total porosity, 3.40-17.55% increase of capillary porosity, 15.98-293.13% increase of organic matter, 6.52-58.75% increase of available phosphorus, 109.07-1789.70% increase of potassium, 3.23-147.71% increase of exchangeable cation, and 12.13-48.48% increase of soil pH were observed after biochar addition. And this improvement increased with the increasing application rate. The same trend was also found in the tobacco N/P/K uptake in the biochar application range of 0-4% and subsequently decreased at 10% rate. Meanwhile, biochar decreased the soil bulk density of 0.68-14.06%. The step regression equation showed that the exchangeable potassium and aluminum for Ultisol as well as the exchangeable potassium and hydrogen for Alfisol were the predominant factors that determined the soil pH. According to the PCA results, exchangeable calcium > exchangeable potassium > exchangeable cation > pH > organic matter > exchangeable magnesium > available potassium > available phosphorus and organic matter > exchangeable potassium > available phosphorus > exchangeable cation > available potassium > pH > exchangeable calcium had a significant impact on soil fertility of Ultisol and Alfisol, respectively. Finally, a comprehensive evaluation of soil fertility by PCA revealed that ST10 (10% rate, w/w) performed best, followed by the ST4 (4% rate, w/w) in both soils. The application of tobacco straw biochar, with appropriate rate, is an effect method to improve physicochemical properties of tobacco-growing soil and N/P/ K uptake of tobacco plant.

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Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Response in Physicochemical Properties of Tobacco-Growing Soils and N/P/K Accumulation in Tobacco Plant to Tobacco Straw Biochar

Zheng

Song

Guan

et al. 2020

J Soil Sci Plant Nutr

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“…Wang et al [34] investigated the adsorption of NH4 + -N onto progressively oxidized maple wood biochar and found that the maximum adsorption capacity was 10.1 mg/g. Zheng et al [20] prepared biochar from anaerobic digestion residue, with an NH4 + adsorption capacity of 8.37 mg/g. Zhu et al [22] prepared activated carbon from avocado seeds through methanesulfonic acid activation and found that its NH4 + -N adsorption capacity was 5.4 mg/g.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Adsorption of Ammonium Nitrogen from Aqueous Solution on Chemically Activated Biochar Prepared from Sorghum Distillers Grain

et al. 2019

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Chemically activated biochars prepared from sorghum distillers grain using two base activators (NaOH and KOH) were investigated for their adsorption properties with respect to ammonium nitrogen from aqueous solution. Detailed characterizations, including scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetry (TG), and specific surface area analyses, were carried out to offer a broad evaluation of the prepared biochars. The results showed that the NaOH- and KOH-activated biochars exhibited significantly enhanced adsorption capacity, by 2.93 and 4.74 times, respectively, in comparison with the pristine biochar. Although the NaOH-activated biochar possessed larger specific surface area (132.8 and 117.7 m2/g for the NaOH- and KOH-activated biochars, respectively), the KOH-activated biochar had higher adsorption capacity owing to its much higher content of functional groups. The adsorption kinetics and isotherms of the KOH-activated biochar at different temperatures were further studied. The biochar had a maximum adsorption capacity of 14.34 mg/g at 45 °C, which was satisfactory compared with other biochars prepared using different feedstocks. The adsorption process followed pseudo-second-order kinetics, and chemical adsorption was the rate-controlling step. The equilibrium data were consistent with the Freundlich isotherm, and the thermodynamic parameters suggested that the adsorption process was endothermic and spontaneous. Consequently, this work demonstrates that chemically activated biochar from sorghum distillers grain is effective for ammonium nitrogen removal.

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“…Moreover, NH 4 + adsorption capacities have been reported to be greater in biochars produced at low temperatures between 300 to 400 • C, possibly due to their higher proportion of acid functional groups [16,17] including high pH [18]. However, a study also found biochars with higher NH 4 + adsorption capacities with increasing pyrolysis temperatures [19]. Though, different feedstock materials were used in the preparation of the biochars examined.…”

Section: Of 15mentioning

confidence: 99%

“…These studies have shown that biochar sorption mechanisms still require further investigation and suggest that hydrochars from the hydrothermal carbonisation (HTC) process are likely to possess greater ability for NH 3 /NH 4 + sorption compared to biochars, given their higher proportion of acidic functional groups. On the other hand, the higher surface areas of biochars may compensate for their lower acidic functionalities since some studies have reported that high adsorbent surface areas and pore volumes increase NH 3/ NH 4 + removal efficiencies [10,19,20]. Moreover, the high surface areas of some biochars may provide more sites for the loading of acidic or cationic species which increase the number of Brønsted and Lewis acid sites respectively.…”

Section: Of 15mentioning

confidence: 99%

Biomass-Derived Carbonaceous Adsorbents for Trapping Ammonia

et al. 2019

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The preparation of low-cost carbonaceous adsorbents for nitrogen recovery is of interest from agricultural and waste management perspectives. In this study, the gaseous ammonia (NH3) and aqueous ammonium (NH4+) sorption capacities have been measured for different types of carbonaceous chars produced under different conditions. The study includes a comparison of an oak-based hydrochar produced from hydrothermal carbonisation (HTC) at 250 °C with two biochars produced from slow pyrolysis at 450 °C and 650 °C, respectively. The chars were also chemically modified with H2SO4, H3PO4, H2O2, and KOH to investigate the potential for sorption enhancement. The highest sorption capacities for NH3 were observed for the hydrochars with typical uptake capacities ranging from 18–28 mg g−1 NH3. Sorption capacity for oak biochars is significantly lower and ranges from 4–8 mg g−1 for biochars produced at 450 °C and 650 °C, respectively. Hydrochar showed a substantially higher sorption capacity for NH3 despite its lower surface area. The CaCl2 extractable NH4+ following ammonia adsorption is incomplete. Typically, only 30–40% of the N is released upon washing with CaCl2 in form of NH4+. Post chemical modification of the chars resulted in only limited enhancement of char NH3 and NH4+ sorption. H3PO4 treatment showed the greatest potential for increasing NH3/NH4+ sorption in biochars, while KOH and H2O2 treatment increased NH3 sorption in the hydrochar. As only marginal increases to char surface area were observed following char treatment, these findings suggest that char surface functionality is more influential than surface area in terms of char NH3/NH4+ sorption.

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Characterization and ammonia adsorption of biochar prepared from distillers' grains anaerobic digestion residue with different pyrolysis temperatures

Cited by 28 publications

References 42 publications

Response in Physicochemical Properties of Tobacco-Growing Soils and N/P/K Accumulation in Tobacco Plant to Tobacco Straw Biochar

Response in Physicochemical Properties of Tobacco-Growing Soils and N/P/K Accumulation in Tobacco Plant to Tobacco Straw Biochar

Adsorption of Ammonium Nitrogen from Aqueous Solution on Chemically Activated Biochar Prepared from Sorghum Distillers Grain

Biomass-Derived Carbonaceous Adsorbents for Trapping Ammonia

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