Physico-chemical characterization of biochars from solid municipal waste for use in soil amendment

Rehrah, Djaafar; Bansode, Rishipal R.; Hassan, Osman; Ahmedna, Mohamed

doi:10.1016/j.jaap.2015.12.022

Cited by 89 publications

(55 citation statements)

References 35 publications

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“…4 (b)), but varied very widely among the feedstocks. The increase in pH was due mainly to the release of some basic elements as the pyrolysis temperature increased (Rehrah et al 2016). Therefore, the pH and EC of biochar are correlated for all feedstocks (r = 0.7) (Fig.…”

Section: Biochar Yields and Compositionsmentioning

confidence: 91%

Biochar Amendment of Soils According to their Physicochemical Properties

Kameyama

Iwata

Miyamoto

2017

JARQ

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In this work, we reviewed the following: 1) the influences of feedstocks and pyrolysis temperature on the physicochemical properties of biochar as a soil amendment material in Japan; and 2) the effects of biochar application on the physicochemical properties of two Japanese soils. We analyzed the physicochemical properties of biochar produced from waste woodchips (Japanese cedar and Japanese cypress), waste moso bamboo chips, rice husk, sugarcane bagasse, poultry manure, and domestic wastewater sludge at pyrolysis temperatures of 400°C, 600°C, and 800°C. Biochar produced from both wood-based biomass and sugarcane bagasse are suitable as a soil amendment material for enhancing water retention in soil. Biochar produced from wood-based biomass at a low pyrolysis temperature (400°C) is suitable for enhancing the cation exchange capacity, whereas biochar produced from wood-based biomass at a high pyrolysis temperature (800°C) can enhance nitrate adsorption. Poultry manure-derived biochar can improve the soil pH and supply phosphate. Based on two case studies using sand dune soil and calcareous soil, we demonstrated that soils can be effectively improved by considering specific soil properties that require improvement/remediation, and by applying a suitable biochar to enhance these properties.

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Section: Biochar Yields and Compositionsmentioning

confidence: 91%

Biochar Amendment of Soils According to their Physicochemical Properties

Kameyama

Iwata

Miyamoto

2017

JARQ

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“…24 Besides, fixed carbon content increased from 33.70% (300 ∘ C) to 57.91% (600 ∘ C), and then stabilized at 58% in the pyrolysis temperature range 700 to 800 ∘ C. Calisto et al 24 found that the release of VM as well as the increase of non-volatile carbon were the two main factors responsible for carbon-rich and highly porous biochar formation, therefore a lower ratio of VM to fixed carbon was more beneficial for NH 4 + adsorption. The pH of BRC samples increased with temperature increase due to the carbonization of BR which resulted in separation of the minerals from the organic matrix, and subsequently enhanced content of alkali elements 21,30 (especially Mg 2+ and Ca 2+ ), which was further confirmed by the result of EDX analysis (Fig. 2) as well as the higher ash content under higher pyrolysis temperature (Table 1).…”

Section: Proximate Analysis and Elemental Compositionsmentioning

confidence: 59%

“…The temperature significantly affected PY, which decreased with increasing temperature due to decomposition of the components of BR. The decrease was first sharp as the temperature was increased from 300 (76.39%) to 600 ∘ C (44.71%), then the decrease became steady as the temperature was increased from 700 to 800 ∘ C. This decrease was attributed to the dehydration of hydroxyl groups, the loss of chemically bound moisture as well as the thermal degradation of lignocellulosic structures, 21,29 which was consistent with the TG analysis showing that the main mass loss occurred in the range 250 to 700 ∘ C.…”

Section: Characterizations Of Br/brc Samples Tg-dtg Analysis Of Br Samentioning

confidence: 98%

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

Zheng

Yang

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND: Increasing attention is being paid to find an alternative way to handle biogas residue from biogas production which is important for sustainable development of biogas project. In this study, biochars from distillers' grains anaerobic digestion residue (BRC) in the pyrolysis temperature range of 300 to 800 ∘ C were prepared. Subsequently, elemental analysis, thermal stability, specific surface area (SSA), scanning electron microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR) and the performance of ammonia (NH 4 + ) adsorption were studied.

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“…According to these SEM images, the char morphology changed with the pyrolysis peak temperature [19]. Overall, it was observed that the porosity increased as the pyrolysis temperature increased due to the release of volatiles compounds during thermochemical degradation [20,21]. The higher the pyrolysis temperature, the lower the pore sizes of the char [19].…”

Section: Resultsmentioning

confidence: 96%

“…The pore network observed for chars suggest their potential use as soil amendment. The porosity can play an important role for helping as a storage of water in soil, serving as habitat for a variety of 5 E3S Web of Conferences 22, 00043 (2017) DOI: 10.1051/e3sconf/20172200043 ASEE17 microorganism, and help in the root movement in soils [20]. On the other hand, these chars could be also be used depending on the pore size as gas adsorbent.…”

Section: Resultsmentioning

confidence: 99%

Temperature influence on the fast pyrolysis of manure samples: char, bio-oil and gases production

et al. 2017

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Abstract. Fast pyrolysis characterization of three dry manure samples was studied using a pyrolyzer. A heating rate of 600°C/s and a holding time of 10 s were selected to reproduce industrial conditions. The effect of the peak pyrolysis temperature (600, 800 and 1000°C) on the pyrolysis product yield and composition was evaluated. Char and bio-oil were gravimetrically quantified. Scanning electron microscopy (SEM) was used to analyse the char structure. H2, CH4, CO and CO2 were measured by means of gas chromatography (GC). A decrease in the char yield and an increase of the gas yield were observed when temperature increased. From 800°C on, it was observed that the char yield of samples Dig R and SW were constant, which indicated that the primary devolatilization reactions stopped. This fact was also corroborated by GC analysis. The bio-oil yield slightly increased with temperature, showing a maximum of 20.7 and 27.8 wt.% for samples Pre and SW, respectively, whereas sample Dig R showed a maximum yield of 16.5 wt.% at 800°C. CO2 and CO were the main released gases whereas H2 and CH4 production increased with temperature. Finally, an increase of char porosity was observed with temperature.

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Physico-chemical characterization of biochars from solid municipal waste for use in soil amendment

Cited by 89 publications

References 35 publications

Biochar Amendment of Soils According to their Physicochemical Properties

Biochar Amendment of Soils According to their Physicochemical Properties

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

Temperature influence on the fast pyrolysis of manure samples: char, bio-oil and gases production

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