Production of char from vacuum pyrolysis of South-African sugar cane bagasse and its characterization as activated carbon and biochar

Carrier, Marion; Hardie, Ailsa G.; Uras, Ümit; Görgens, Johann F.; Knoetze, J.H.

doi:10.1016/j.jaap.2012.02.016

Cited by 206 publications

(91 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Char from rice husk, produced at a relatively low temperature (i.e., 300 °C) was found to be acidic (pH < 6); however, char pH increased with increasing charring temperatures [43]. Similarly, Carrier et al [44] reported that sugarcane bagasse char produced under vacuum pyrolysis conditions (450 °C) contained acidic functional groups, i.e., carboxylic, and phenolic groups on its surface causing the char to be slightly acidic, i.e., pH = 6.56. The gradual increase in char alkalinity with temperature increase may be attributed to the dissociation of AAEM species and the formation and deposition of alkali carbonates on char surfaces [45].…”

Section: Biochar Acidity/alkalinity Levels As Influenced By Carbonizamentioning

confidence: 87%

Characterization of Biochar from Switchgrass Carbonization

et al. 2014

View full text Add to dashboard Cite

Switchgrass is a high yielding, low-input intensive, native perennial grass that has been promoted as a major second-generation bioenergy crop. Raw switchgrass is not a readily acceptable feedstock in existing power plants that were built to accommodate coal and peat. The objective of this research was to elucidate some of the characteristics of switchgrass biochar produced via carbonization and to explore its potential use as a solid fuel. Samples were carbonized in a batch reactor under reactor temperatures of 300, 350 and 400 °C for 1, 2 and 3 h residence times. Biochar mass yield and volatile solids decreased from 82.6% to 35.2% and from 72.1% to 43.9%, respectively, by increasing carbonization temperatures from 300 °C to 400 °C and residence times from 1 h to 3 h. Conversely, biochar heating value (HV) and fixed carbon content increased from 17.6 MJ kg and from 22.5% to 44.9%, respectively, under the same conditions. A biomass discoloration index (BDI) was created to quantify changes in biochar colors as affected by the two tested parameters. The maximum BDI of 77% was achieved at a carbonization temperature of 400 °C and a residence time of 3 h. The use of this index could be expanded to quantify biochar characteristics as affected by thermochemical treatments. Carbonized biochar could be considered a high quality solid fuel based on its energy content. OPEN ACCESSEnergies 2014, 7 549

show abstract

Section: Biochar Acidity/alkalinity Levels As Influenced By Carbonizamentioning

confidence: 87%

Characterization of Biochar from Switchgrass Carbonization

et al. 2014

View full text Add to dashboard Cite

show abstract

“…The cation exchangeable capacity (CEC) is the total capacity of a biochar to adsorb and exchange positively charged species (Carrier et al 2012). The CEC of biochar decreased sharply as the pyrolysis temperature increased from 400°C to 600°C (Fig.…”

Section: Chemical Properties Of Biocharsmentioning

confidence: 99%

Biochar Amendment of Soils According to their Physicochemical Properties

Kameyama

Iwata

Miyamoto

2017

JARQ

View full text Add to dashboard Cite

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.

show abstract

“…The increase in soil properties can lead back to the application of nutrients trough AR (Carrier et al, 2012;Ram and Masto, 2014). The research of Machado et al (2014) compared treatments with and without application of organic residues (aquatic macrophytes) and phosphorus (triple superphosphate) as fertilizers for degraded soils.…”

Section: ) -----------% -------------------(Mg Dm -3 ) --------mentioning

confidence: 99%