TY  - JOUR
TI  - Spectroscopic Characterisation and Elemental Composition of Biochars Obtained from Different Agricultural Wastes
AB  - The use of biochar (BC) has an environmental importance in terms ofclimate change, soil fertility, waste management and energy generation.The purpose of this study was to reveal some of the structuralcharacteristics of BC produced from agricultural wastes by employingspectroscopic techniques within a short time frame. The BCs wereproduced via slow pyrolysis at 300 °C from four feedstocks: tea waste(TW), hazelnut husk (HH), rice husk (RH) and poultry litter (PL). The pHof plant-derived BC was alkaline (pH: 7-9), and the pH of manure-derivedBC was strongly alkaline (pH: 10.1). PLBC has the highest (4.67 dS m-1)electrical conductivity (EC) when compared to other BC materials.According to the X-ray fluorescence (XRF) analysis method, organiccompound contents of TWBC and HSBC were found to be higher thanthe other two BCs, while the other two BCs (RHBC and PLBC) werericher in mineral content. TWBC and HHBC were composed of moremineral elements when compared to RHBC and PLBC, but the latter twowere still rich in minerals. The surface area of RHBC was found higher(12.9 m2 g-1) than other BC materials. According to the X-rayfluorescence (XRF) analysis method, the total element content of PLBCwas found higher than the other BCs. In addition, the silicon (Si) contentof RHBC was considerably higher (16.4%). In PLBC’s XRD diagram:quartz (SiO2) at 3.41 (Å); calcite (CaCO3) at 3.96, 2.94 and 1.91 (Å);sylvine (KCl) at 3.06 and 1.85 (Å); and whitlockite ([Ca, Mg]3 [PO4]2) at2.78 and 2.17 (Å) were found. In HHBC and RHBC diagrams, partiallycrystallized carbon (CryC) peaks were mainly observed between 1.20 and2.34 (Å), and cristobalite peaks (i.e., amorphous SiO2) were observed at3.91 and 3.40 (Å).
AU  - Deniz, Kıymet
AU  - SOZÜDOGRU OK, SONAY
AU  - MOHAMEDELNOUR, Abdelbagi
AU  - AKÇA, Muhittin Onur
AU  - Kibar, Mümtaz
DO  - 10.15832/ankutbd.623876
PY  - 2021
JO  - Tarım Bilimleri Dergisi
VL  - 27
IS  - 4
SN  - 1300-7580
SP  - 426
EP  - 435
DB  - TRDizin
UR  - http://search/yayin/detay/462456
ER  -