Optimization of Biochar Preparation from Acacia Wood for Soil Amendment

Pituya, Pinitpon; Sriburi, Thavivongse; Wijitkosum, Saowanee

doi:10.4186/ej.2017.21.2.99

Cited by 8 publications

(6 citation statements)

References 6 publications

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“…For use of biochar as a soil amendment, understanding and predicting its physical and surface-chemistry characteristics are important to know how it will function and influence the physicochemical properties of soil [24]. To understand how the biochar preparation parameters influenced these final characteristics, the experiment was designed by RSM.…”

Section: Experimental Designmentioning

confidence: 99%

Optimization of process and properties of biochar from cabbage waste by response surface methodology

Pradhan

Shahbaz

Abdelaal

et al. 2020

Biomass Conv. Bioref.

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The properties of biochar produced by pyrolysis are strongly influenced by various factors such as feedstock. Cabbage makes up around 6.5% of global vegetable production with around 30% wasted from the farm to plate, making it a considerable and widely available biochar feedstock. This study investigates the optimization of three design factors, namely, pyrolysis temperature, feed particle size, and quantity of waste cabbage biomass to produce biochar. Feed particle size was selected due to its relevance to solar or other drying pretreatment, necessary for moisture reduction. To evaluate the influence of these parameters and find their optimum conditions, response surface methodology (RSM) with a central composite design of experiments was used. Optimum response for cabbage biochar was observed at lower temperature (360°C) with particle size of 0.90 mm and a relatively low quantity, though this latter parameter had minimal influence on most response parameters. Temperature was the most influential parameter on all response variables, although particle size was important for nitrogen content, cation exchange capacity (CEC), and electrical conductivity. Biochar produced at an optimum pyrolysis temperature of 360°C and nearest practical size of 1 mm was tested with Ipomoea purpurea in sandy soil. Two percent biochar loading provided an increase in water retention from 6.5% in the control to 10% in the biochar amended soil (p = 0.016). Increases were also observed in plant height and leaf production but were not statistically significant at α = 0.05.

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Section: Experimental Designmentioning

confidence: 99%

Optimization of process and properties of biochar from cabbage waste by response surface methodology

Pradhan

Shahbaz

Abdelaal

et al. 2020

Biomass Conv. Bioref.

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“…To achieve the desired temperature, a co-fuel process with biomass waste was utilized. Previously, studies [22] elaborated biochar from acacia wood using a slow pyrolysis process, achieving satisfactory results with temperatures ranging between 300 and 500 • C, with an optimum temperature of 434.8 • C for 1 h using a laboratory electrical furnace. Similarly, Sriburi and Sohi et al [23,24] used a slow pyrolysis process under a low-moderate temperature (450-500 • C) with an extended residence time (2-3 h) in the absence of oxygen to produce biochar from different waste materials, yielding satisfactory results for soil improvement purposes.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Waste Biomass from Pine, Eucalyptus, and Acacia and the Biochar Elaborated Using Pyrolysis in a Simple Double Chamber Biomass Reactor

González-Prieto,

Ortiz Torres,

Vazquez Torres

2024

Applied Sciences

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Using waste biomass is considered one of the ways to reduce climate change. Arboreal waste biomass from pine, eucalyptus, and particularly invasive plants (Acacias) would make it possible to transform this natural resource, but needs to be adjusted to current and innovative technologies. The production of high fixed carbon biochar with this biomass would improve not only environmental aspects, but also the use of currently not susceptible materials for other types of exploitation. The objective of this study is to develop biochar from three different waste biomass materials and compare their parameters with those of the original biomass. Thermochemical conversion processes were used in a simple double chamber reactor developed for this study. Temperatures between 400 and 500 °C during 280 min were achieved and allowed to transform the initial biomass in a biochar with a high content of fixed carbon. By comparing the original biomass with the final biochar through tests of humidity, density, calorific values, fixed carbon, and cationic and elemental analysis, an increase in the parameters was confirmed. Fixed carbon of 70%, 77%, and 71% with pine, acacia, and eucalyptus biomass have been obtained, respectively, with yields between 30% and 40%. The results are favorable, particularly with acacia invasive plants, and could help in their difficult silviculture management.

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“…One of the possibilities consists of the valorization of RFB into biochar through the process of pyrolysis, as well as its further application in soil that has poor agronomic properties. This approach is expected to have a positive impact because the biomass inorganic materials are entrapped in the biochar matrix, thus providing the soil with greater stocks of plant nutrient elements such as P, K, Ca, Mg, and Na [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Physicochemical Improvements in Sandy Soils through the Valorization of Biomass into Biochar

Morim,

dos Santos,

Tarelho

et al. 2023

Energies

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Forestry management operations that are designed to prevent wildfires while also protecting the environmental compartments that are directly affected by them, such as soil, are of major relevance. The valorization of residual forestry biomass into biochar that is then used to be turned back into forest soils is an approach that meets Circular Economy principles. However, the effects on soil of the application of biochar that is produced from low-grade forestry biomass are unknown. In this work, a soil incubation assay was performed with a sandy soil that was amended with biochar produced from residual forestry biomass (Acacia) to assess its effectiveness in terms of boosting soil quality. The factorial study comprised the effects of biochar at two pyrolysis temperatures (450 °C and 550 °C), four application rates (0%, 3%, 6%, and 10% (w/w)), and three particle size classes (S < 0.5 mm, M = [0.5; 3.15], and L > 3.15 mm). The soil pH increased for all treatments to suitable agronomic values (5–7), and the water-holding capacity increased by 69% to 325% when compared to the control soil. The bioavailability of the plant nutrient elements also increased with the application rate, especially for treatments with small particles of biochar. Biochar that is made of low-grade biomass from forestry maintenance operations can be efficiently recycled back into forest soils to improve the physicochemical properties of agronomic relevance, thus allowing for a reduced water demand and better soil quality. However, studies on biochar applications in different soils are needed in order to assess the effectiveness of this approach.

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Optimization of Biochar Preparation from Acacia Wood for Soil Amendment

Cited by 8 publications

References 6 publications

Optimization of process and properties of biochar from cabbage waste by response surface methodology

Optimization of process and properties of biochar from cabbage waste by response surface methodology

Comparison of Waste Biomass from Pine, Eucalyptus, and Acacia and the Biochar Elaborated Using Pyrolysis in a Simple Double Chamber Biomass Reactor

Physicochemical Improvements in Sandy Soils through the Valorization of Biomass into Biochar

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