Preparation and Characterization of Novel Magnesium Composite/Walnut Shells-Derived Biochar for As and P Sorption from Aqueous Solutions

Elevated or unnatural levels of arsenic (As) and phosphorus (P) concentrations in soils waterbodies from anthropogenic sources can present significant hazards for both natural ecosystems human food production. Effective, environmentally friendly, inexpensive materials, such as biochar, are needed to reduce mobility bioavailability As P. While biochar features several physicochemical properties that make it an ideal contaminant sorbent, certain modifications mineral-impregnation improve sorption efficiencies targeted compounds. Here, we conducted experiments investigate quantify the potential utility magnesium (Mg) improving efficiency P As. We synthesized a Mg-modified walnut shells-derived characterized its ability remove aqueous solutions, thereby mitigating losses valuable when while, at same time, immobilizing hazardous ecosystems. SEM-EDX, FTIR elemental analysis showed morphological functional changes formation new Mg-based composites (MgO, MgOHCl) responsible improved capacity by 10 times 20 Sorption was attributed AEC, higher SSA, chemical forms sorbates site formations. Synthetized Mg-composite/walnut shell-derived also removed >90% real samples wastewater, indicating suitability contaminated waterbody remediation.