Co-production of biochar, bio-oil and syngas from halophyte grass (Achnatherum splendens L.) under three different pyrolysis temperatures

Characteristics and Potential Values of Bio-Products Derived from Switchgrass Grown in a Saline Soil Using a Fixed-Bed Slow Pyrolysis System

“…The dissolved organic carbon (DOC), total nitrogen, phosphorus, K + and Na + , and Ca 2+ and Mg 2+ were determined by the potassium dichromate volumetric method, Kjeldahl method, Mo-Sb colorimetric method, with a FP 640 flame photometer (Shanghai Inesa Scientific Instrument Co. Ltd, Shanghai, China), and with inductively coupled plasma spectrometry (ICP), respectively. The ash was analyzed by heating one gram of biochar sample at 500 °C for 4 h in a muffle furnace (Irfan et al 2016). The contents of C, H, and N were estimated with an element analyzer (Vario EL III, Elementar, Frankfurt, Germany).…”

Potential value of biochar as a soil amendment: A review

“…Effect of pyrolysis temperature on biochar properties The properties of biochar are not only a function of the raw feedstock but are also dependent on the pyrolysis conditions, such as temperature, heating rate, and residence time. The C contents in the biochars were 58%, 62%, and 64% at 300, 500, and 700 °C, indicating that the biochar became more carbonaceous as temperature was increased [9]. The biochar produced at high pyrolysis temperature indicate an increase in aromaticity and a decrease in polarity [12].…”

“…The primary reason for the application of wastewater sludge for biochar production and agricultural utilization is higher concentrations of N and P in wastewater sludge biochar, as well as other micro and macronutrients [8]. More recently, [9] reported Achnatherum splendens L. biomass for biochar production and found high ash content in biochar obtained at 700 °C indicating that a significant amount of mineral nutrients are present in biochar and offers a greater potential as a soil amendment. Effect of pyrolysis temperature on biochar properties The properties of biochar are not only a function of the raw feedstock but are also dependent on the pyrolysis conditions, such as temperature, heating rate, and residence time.…”

“…A number of studies indicated that high pyrolysis temperature led to increased surface area and porosity due to escape of volatiles [13, 17]. Irfan et al [9] found increasing trend in pH, EC and ash content with increasing pyrolysis temperature. So, both feedstock source and pyrolysis temperature decide the final properties of biochar ( Figure 3).…”

Combustion Kinetics of Biochar Prepared by Pyrolysis of Macadamia Shells

“…Meanwhile, the ignition and burnout temperatures of MSs-600 were 389.6 °C and 756.1 °C, respectively. This is because the higher temperatures cause decomposition of the volatile matter during the pyrolysis process (Irfan et al 2016).…”