PHYSICOCHEMICAL AND ADSORPTION CHARACTERISTICS OF MICROWAVE HYDROCHARS FROM STRAW ENHANCED BY ACID MEDIA

Niu Wenjuan; Feng Yuxin; Li Chuyi; Yuan Jiahong; Zhang Xing; Xiao Qiuyun

doi:10.19912/j.0254-0096.tynxb.2021-1312

PDF(2358 KB)

Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (3) : 270-276. DOI: 10.19912/j.0254-0096.tynxb.2021-1312

PHYSICOCHEMICAL AND ADSORPTION CHARACTERISTICS OF MICROWAVE HYDROCHARS FROM STRAW ENHANCED BY ACID MEDIA

Niu Wenjuan¹, Feng Yuxin¹, Li Chuyi¹, Yuan Jiahong², Zhang Xing², Xiao Qiuyun²

Author information +

History +

Abstract

The physicochemicaland adsorption characteristics of themicrowave hydrocharswere discussed by using pure water,phosphoric acid,citric acid,acetic acid and sulfuric acid solutions as the hydrothermal reaction media.The results showed that the addition ofacid media reduced the yield of hydrochar. The addition of phosphoric acid solution medium resulted in the highest yield of hydrochar,which was 44.25%-47.24%. Compared to that preparedin pure water medium, the C, ash and fixed carbon of hydrochar prepared in acid media were higher,while the H/C and O/C were lower. The application of acid mediaenhanced the C==O,C==C and aromatic C—H bonds in the hydrochar. The hydrochars prepared in the phosphoric acid medium had the most abundant pore structures and carbon microspheres, followed by those prepared in the citric acid medium. The phosphoric acid medium resulted in the largest specific surface area of 10.669-15.506 m²/g and the largest total pore volume of 0.070-0.116 cm³/g of the hydrochar.The hydrochars prepared in acid media had a significant increase in the adsorption amount of ammonia nitrogen,and those prepared in phosphoric acid medium had the highest adsorption amount of ammonia nitrogen of 5.26 mg/g. The contents of ash,fixed carbon, C,N and O of hydrochars had a positive impact on the adsorption of ammonia nitrogen, meanwhile,the adsorption of ammonia nitrogen were also positively correlated with the specific surface area, total pore volumeand aperture size of the hydrochar.

Key words

biomass energy / acid / hydrochar / adsorption / physicochemical properties / straw / microwave hydrothermal carbonization

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Niu Wenjuan, Feng Yuxin, Li Chuyi, Yuan Jiahong, Zhang Xing, Xiao Qiuyun. PHYSICOCHEMICAL AND ADSORPTION CHARACTERISTICS OF MICROWAVE HYDROCHARS FROM STRAW ENHANCED BY ACID MEDIA[J]. Acta Energiae Solaris Sinica. 2023, 44(3): 270-276 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1312

References

[1] 王冠, 赵立欣, 孟海波, 等. 秸秆炭定向调控工艺优化试验[J]. 农业工程学报, 2020, 36(16): 182-191.
WANG G, ZHAO L X, MENG H B, et al.Optimization test of directional control process of straw carbon[J]. Transactions of the Chinese Society of Agricultural Engineering, 2020, 36(16): 182-191.
[2] 宋大利, 侯胜鹏, 王秀斌, 等. 中国秸秆养分资源数量及替代化肥潜力[J]. 植物营养与肥料学报, 2018, 24(1): 1-21.
SONG D L, HOU S P, WANG X B, et al.Nutrient resource quantity of crop straw and its potential of substituting[J]. Journal of plant nutrition and fertilizers,2018, 24(1): 1-21.
[3] CAO H L, WU X S, SYED-HASSAN S S A, et al. Characteristics and mechanisms of phosphorous adsorption by rape straw-derived biochar functionalized with calcium from eggshell[J]. Bioresource technology, 2020, 318:124063.
[4] ARPIA A A, CHEN W H, LAM S S, et al.Sustainable biofuel and bioenergy production from biomass waste residues using microwave-assisted heating:a comprehensive review[J]. Chemical engineering journal, 2021, 403: 126233.
[5] SHARMA H B, SARMAH A K, DUBEY B. Hydrothermal carbonization of renewable waste biomass for solid biofuel production:a discussion on process mechanism, the influence of process parameters, environmental performance and fuel properties of hydrochar[J]. Renewable and sustainable energy reviews,2020,123:109761.1.
[6] LI J,DAI J J, LIU G Q, et al.Biochar from microwave pyrolysis of biomass: a review[J]. Biomass and bioenergy,2016, 94: 228-244.
[7] REZA M T, ROTTLER E, HERKLOTZ L, et al.Hydrothermal carbonization(HTC) of wheat straw:influence of feedwater pH prepared by acetic acid and potassium hydroxide[J]. Bioresource technology, 2015,182: 336-344.
[8] LIU J Z,ZHONG F, NIU W J, et al.Effects of temperature and catalytic methods on the physicochemical properties of microwave-assisted hydrothermal products of crop residues[J]. Journal of cleaner production, 2021, 279: 123512.
[9] LEI Q,KANNAN S, RAGHAVAN V.Uncatalyzed and acid-aided microwave hydrothermal carbonization of orange peel waste[J]. Waste management, 2021, 126: 106-118.
[10] LYNAM J G, CORONELLA C J, YAN W, et al.Acetic acid and lithium chloride effects on hydrothermal carbonization of lignocellulosic biomass[J]. Bioresource technology, 2011, 102(10): 6192-6199.
[11] CHEN W H, YE S C, SHEEN H K.Hydrothermal carbonization of sugarcane bagasse via wet torrefaction in association with microwave heating[J]. Bioresource technology, 2012, 118: 195-203.
[12] SEVILLA M, FUERTES A B.Chemical and structural properties of carbonaceous products obtained by hydrothermal carbonization of saccharides[J]. Chemistry,2009, 15(16): 4195-4203.
[13] GAO Y,LIU Y H, ZHU G K, et al.Microwave-assisted hydrothermal carbonization of dairy manure: chemical and structural properties of the products[J]. Energy, 2018,165: 662-672.
[14] LI J W, ZHAO P T, LI T, et al.Pyrolysis behavior of hydrochar from hydrothermal carbonization of pinewood sawdust[J]. Journal of analytical and applied pyrolysis, 2020, 146:104771.
[15] GHANIM B M,KWAPINSKI W, LEAHY J J.Hydrothermal carbonisation of poultry litter:effects of initial pH on yields and chemical properties of hydrochars[J]. Bioresource technology, 2017, 238: 78-85.
[16] HONG P, LIU X, ZHANG X, et al.Hierarchically porous carbon derived from the activation of waste chestnut shells by potassium bicarbonate (KHCO₃) for high-performance supercapacitor electrode[J]. International journal of energy research, 2020, 44(2): 988-999.
[17] JAGTOYEN M,DERBYSHIRE F.Activated carbons from yellow poplar and white oak by H₃PO₄ activation[J]. Carbon, 1998, 36(7): 1085-1097.
[18] HONG Z Y, ZHONG F, NIU W J, et al.Effects of temperature and particle size on the compositions, energy conversions and structural characteristics of pyrolysis products from different crop residues[J]. Energy, 2020,190: 116413.
[19] 田雨, 刘晓刚, 赵玉, 等. 稻壳炭制备工艺参数对吸附性能的影响[J]. 农业工程学报, 2020, 36(24): 211-217.
TIAN Y, LIU X G,ZHAO Y, et al.Effects of preparation process parameters of rice husk carbon on adsorption performance[J]. Transactions of the Chinese Society of Agricultural Engineering, 2020, 36(24): 211-217.
[20] 吕敏, 吴雪双, 刘俊怡, 等. 牛粪炭吸附NH₄⁺的动力学和热力学行为[J]. 太阳能学报, 2020, 41(7): 26-32.
LYU M, WU X S, LIU J Y, et al.Kinetic and thermodynamic behavior of cattle manure biochar adsorpting NH₄⁺[J]. Acta energiae solaris sinica, 2020, 41(7): 26-32.