Food waste based biochars for ammonia nitrogen removal from aqueous solutions

Xue, Shan; Zhang, Xinbo; Ngo, Huu Hao; Guo, Wenshan; Wen, Huabing; Li, Chaocan; Zhang, Yongchao; Ma, Chanjuan

doi:10.1016/j.biortech.2019.121927

Cited by 94 publications

(22 citation statements)

References 39 publications

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“…These were each of the four individual dried food wastes and an equal-weighted mixture of the four wastes. Pyrolysis was conducted in the absence of oxygen using a muffle furnace (Lindberg Blue M-3504, Thermo Scientific) in batch mode at the following temperatures to assess their influence on biochar yield and properties: 300, 400, 500 and 600 °C (Xue et al 2019). Fifty grams of each dried feedstock was pyrolyzed at the four different temperature conditions to produce biochar.…”

Section: Biochar Productionmentioning

confidence: 99%

Biochar from vegetable wastes: agro-environmental characterization

Pradhan

Abdelaal

Mroué

et al. 2020

Biochar

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Considering the global issue of vegetable wastes generation and its impact on the environment and resources, this study evaluated the conversion of four largely produced vegetable wastes (cauliflower, cabbage, banana peels and corn cob residues) into biochar. Each waste was tested individually and as a combined blend to assess feedstock influences on biochar properties. In addition, various pyrolysis temperatures ranging from 300 °C to 600 °C and two particle size fractions (less than 75 µm, 75–125 µm) were considered. Biochars were characterized for various properties that can influence the biochars’ effectiveness as a soil amendment. It was found that pyrolysis temperature was the most dominant factor on biochar properties, but that individual feedstocks produced biochars with different characteristics. The biochars had characteristics that varied as follows: pH 7.2–11.6, ECE 0.15–1.00 mS cm−1, CEC 17–cmolc kg−1 and ζ-potential − 0.24 to − 43 mV. Based on optimal values of these parameters from the literature, cauliflower and banana peels were determined to be the best feedstocks, though mixed vegetable waste also produced good characteristics. The optimum temperature for pyrolysis was around 400 °C, but differed slightly (300–500 °C) depending on the distinct feedstock. However, smaller particle size of biochar application was always optimal. Biochar yields were in the range of 20–30% at this temperature range, except for corn cobs which were higher. This study demonstrates that pyrolysis of dried vegetable wastes is a suitable waste valorization approach to produce biochar with good agricultural properties.

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Section: Biochar Productionmentioning

confidence: 99%

Biochar from vegetable wastes: agro-environmental characterization

Pradhan

Abdelaal

Mroué

et al. 2020

Biochar

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“…The correlation coefficients (R 2 ) value reveals that the Langmuir model is more reasonable than the Freundlich model in describing the process, which also indicates that the change of particle size doesn't bring effects on the monolayer adsorption nature of MB or NH4 + onto STs and PSTs [47,48].…”

Section: Adsorption Isothermsmentioning

confidence: 96%

Secondary particle size determining sedimentation and adsorption kinetics of titanate-based materials for ammonia nitrogen and methylene blue removal

Zhang

Huo

Hou

et al. 2021

Journal of Molecular Liquids

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“…Where MC is moisture content, A is the mass of the sample before drying, g, and B is the change in weight of the sample before and after drying in the oven. According to [13] the volatile matter refers to the part of a biomass matter that is released as volatile gases. During combustion, most of the solid waste was volatile and burn as gas in the cookstove this implies the high volatile content of biomass material.…”

Section: ………………… (13)mentioning

confidence: 99%

“…The Ultimate analysis determination of the waste of the degradable waste aims to analyze the content of its carbon, hydrogen, oxygen, sulfur, and ash [11]. From the research literature conducted, the percentage of carbon and nitrogen in food waste is 54% and 0.69%, respectively [12]. These values vary somewhat from the ultimate values which are 49% and 2.8% for carbon and nitrogen, respectively [13].…”

Section: Introductionmentioning

confidence: 99%

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Conversion of Degradable Solid Waste into Alternative Energy using Local Wastes as a Binder, Case of Southwestern Ethiopia

Bayu

Hundie

2020

SJE

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The objective of this research is to produce high quality of charcoal from the most known local wastes as a binder. The solid waste was collected from Southwestern Ethiopia and the production of charcoal briquette based on different binder preparation. The local wastes like sawdust and paper were used as a binder comparing with starch as a standard binder. The result obtained by using sawdust shows better burning time and less smoke comparing with using paper as a binder next to using starch as a binder. The proximate analysis result obtained for degradable solid waste was its density, percentage of moisture, volatile matter, ash, fixed carbon, and caloric value of 16.73 kg/m 3 ,17.81%, 67.56%,4.78%, 9.85%, and 18.39MJ/kg respectively. In the same way, fuel briquette using sawdust as a binder was characterized for its density, percentage of porosity, weight index, shatter resistance, moisture content, volatile matter content, ash content, fixed carbon content, and caloric value which is 750.06 kg/m 3 , 29.05%, 92.38%, 9.87%, 29.6%, 3.56%, 56.97% and 27.38 MJ/kg respectively. Using sawdust is better than using paper as a binder since the briquette produced by using sawdust as a binder shows less smoke and higher burning time. This shows that it is possible to convert solid wastes into fuel briquettes using local wastes as binders.

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Food waste based biochars for ammonia nitrogen removal from aqueous solutions

Cited by 94 publications

References 39 publications

Biochar from vegetable wastes: agro-environmental characterization

Biochar from vegetable wastes: agro-environmental characterization

Secondary particle size determining sedimentation and adsorption kinetics of titanate-based materials for ammonia nitrogen and methylene blue removal

Conversion of Degradable Solid Waste into Alternative Energy using Local Wastes as a Binder, Case of Southwestern Ethiopia

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