Use of biochar from rice husk pyrolysis: assessment of reactivity in lime pastes

Assessment of the application of two amendments (lime and biochar) on the acidification and bioavailability of Ni in a Ni-contaminated agricultural soils of northern Colombia

“…The pyrolysis temperature was raised to 500 °C at a rate of 20 °C min −1 and held constant for 3 h, followed by cooling to room temperature inside a furnace. The biochar was aerated for 24 h at room temperature (25 °C), then sieved (<2mm) and stored in airtight containers ( Morales et al., 2021 ; Sepúlveda-Cadavid et al., 2021 ; Herrera et al., 2022 ). The biochar obtained was named as SP-BC.…”

Biochar and bio-oil fuel properties from nickel nanoparticles assisted pyrolysis of cassava peel

“…Generally, the production of biochar and bio-oil can be conducted from different waste biomass sources such as almond shell, corn cob, rice husk, sugarcane bagasse, groundnut shell, poplar sawdust, food waste, Crofton weed, citrus peel, coffee husk, palm kernel shell, walnut shell and cassava rhizome ( Cheng et al., 2021 , 2022 ; Egbosiuba et al., 2020a ; Ifa et al., 2020 ; Islam et al., 2021 ; Kalair et al., 2021 ; Morales et al., 2021 ; Nkomo et al., 2021 ; Promraksa and Rakmak, 2020 ; Quillope et al., 2021 ; Rueangsan et al., 2021 ; Saleem, 2022 ; Selvarajoo et al., 2022 ; Soka and Oyekola, 2020b ). The quality of the biochar can be determined by physicochemical parameters such as volatile matter, percentage carbon content, fixed carbon, ash content and higher heating value (HHV).…”

Magnetization of a Biochar Derived from Orange Peel and Its Application for the Removal of Crystal Violet

“…XRD patterns of OPB and OPB/Fe3O4 are shown in Figure 2. An Extended signal between intervals of 2θ between 18°-25° was observed in the diffractograms of OPB, indicating the presence of amorphous carbon [31][32], the presence of a peak at 2θ = 43.25° confirm also the presence of certain degree of graphitic carbon [33][34]. In addition, the XRD patterns displayed other peaks at 2θ = 25°, 32°, 39°, and 48° which can be attributed to the presence of hydroxyapatite in the biochar (ICDD-PDF No 00-001-1008) [24].…”