Adsorptive removal of naproxen onto nano magnesium oxide‐modified castor wood biochar: Treatment of pharmaceutical wastewater via sequential Fenton's‐adsorption process

• DOI: 10.1002/iub.2912
• Publication Date: 2024-09-16T12:40:42Z
• Authors: Amreen Bano; Mohd Kashif Aziz; Fuad Ameen; Kavita Singh; Bablu Prasad; Nandan; Hemen Dave; Rajesh Ravi; Jayanand Manjhi; Madhu Kumari; Kumar Suranjit Pr...

Abstract This current investigation explored the thermal conversion process of castor wood into biochar, which was subsequently harnessed for removing naproxen from pharmaceutical industrial effluent via adsorption. Surface composition analyses conducted through scanning electron microscopy–energy dispersive X‐ray, laser‐induced breakdown spectroscopy, and Fourier‐transform infrared studies unveiled presence nano MgO particles within adsorbent material. Employing optimization techniques such as response surface methodology facilitated a refined approach to batch study. The optimized conditions sodium (NPX) adsorption on nano‐MgO‐modified biochar were identified pH 4, 1.5 g/L dosage, 120‐min contact time maintaining constant NPX concentration 10 mg/L. capacity calculated be 123.34 mg/g nano‐magnesium oxide‐modified (modified biochar) 99.874 pristine (pristine biochar). Fenton's reagents comprising 15 mM FeSO 4 (7H 2 O) 25 H O have been scrutinized under 3.0, reaction 30 min, temperature 30°C, stirring at 120 rpm, followed by treatment. COD, NH 3 –N, NO − , PO 3− removal percentages found 90%, 87%, 79%, 80%, respectively. Thus MgO‐modified holds promise treatment effluent.