Synthesis and Characterization of Adsorbent Biochar/MnFe₂O₄ Composite from Agricultural Residue for Wastewater Treatment

Abstract

Agriculture residue is produced every year in millions of tons worldwide and can be used as cheaper and environmentally friendly adsorbent. Herein, the biochar was synthesized by pyrolysis from coconut hull, corncob, rice husk, peanut hull and wheat straw. Total organic carbon was determined by standard TC-IC method, i.e., for Wheat Straw was found 20% highest among others agricultural residue and selected for biochar/MnFe2O4 composite synthesis. FTIR spectroscopy showed a band at 630 cm−1 that confirms the presence of MnFe2O4. BET surface analysis data showed the average specific surface area of biochar in the range of (4.3–79.389 m2 g−1). The surface area of biochar/MnFe2O4 composite was 149.96 m2 g−1, which was highest of all synthesized biochar’s. Adsorption study was carried out by using a specified amount of biochar for the specified time in a 50 ml wastewater sample of known chemical oxygen demand (COD) value. Biochar/MnFe2O4 adsorbent composite showed greater COD reducing the capacity of 70% than that of biochar produced without the formation of precipitates of MnFe2O4. The combination of various appealing attributes including cost-effective, environmentally friendly, and good COD reducing ability makes adsorbent a good option to be used in industrial applications specifically in the field of water treatment.

Augmented Catalytic Performance of PVA- Assisted Fe2O3 Nano Catalyst for Water Treatment Synthesized via Green Route

“…16 Nanomaterials developed through green routes will directly escalate the remediation process to eco-friendly approach. 17 Such that, it will contribute towards reduction of derivates/pollutants and use of safer solvent/auxiliaries as well as sustainable raw material. 18 Adaption of eco-friendly synthesis is further desired to evade the creation of toxic residues through using reliable, sustainable solvents and innate organic systems.…”