Towards synergistic combination of biochar/ultrasonic persulfate enhancing removal of natural humic acids from water
نویسندگان
چکیده
Removal of natural organic matter (NOMs) from actual water is a major challenge in the context worldwide pollution resources. The removal humic acids system combining biochar adsorption and ultrasonic persulfate oxidation was studied this paper. effects addition, concentration initial pH were investigated. A high rate up to 92.5% achieved for combined biochar/ultrasonic/persulfate system, versus 84.0% biochar/persulfate, 52.0% sole biochar, 50.0% biochar/ultrasonic, 10.0% persulfate/ultrasonic, 4.0% 1.0% systems. Ultrasonic treatment increased efficiency 90.0% within 60 min. Mechanisms towards synergistic combination investigated by gel permeation chromatography, electron paramagnetic resonance quenching experiments together with characterization biochar. Hydroxyl radical contributors proposed adsorption-oxidation mechanism, followed sulfate SO4-·. results three-dimensional fluorescence diagram, regional integration TOC analysis indicated that presented promising application prospects remove NOM pollutants real water.
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ژورنال
عنوان ژورنال: Journal of environmental chemical engineering
سال: 2022
ISSN: ['2213-2929', '2213-3437']
DOI: https://doi.org/10.1016/j.jece.2022.107809