Microencapsulated reactor for simultaneous removal of calcium, fluoride and phenol using microbially induced calcium precipitation: Mechanism and functional characterization

Zhang, Lingfei; Ali, Amjad; Su, Junfeng; Wang, Zhao; Zhang, Ruijie; Liu, Yan

doi:10.1016/j.jhazmat.2022.130704

Cited by 9 publications

(1 citation statement)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various methods have been developed to eliminate phenol from wastewater, including precipitation, biological treatment, reverse osmosis, ion exchange, extraction, and adsorption techniques . In contrast to the above methods, advanced oxidation processes (AOPs) are widely considered to be one of the most effective ways for treating a broad range of toxic organic compounds due to their capability of oxidizing challenging-to-degrade or harmful pollutants into comparatively polar and less hazardous substances.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen-Doped Biochar for Enhanced Peroxymonosulfate Activation to Degrade Phenol through Both Free Radical and Direct Oxidation Based on Electron Transfer Pathways

Xie,

Zhang,

et al. 2024

Langmuir

View full text Add to dashboard Cite

Nowadays, super nitrogen-doped biochar (SNBC) material has become one of the most promising metal-free catalysts for activating peroxymonosulfate (PMS) to degrade organic pollutants. To understand the evolution of SNBC properties with fabrication conditions, a variety of SNBC materials were prepared and characterized by elemental analysis, N 2 adsorption−desorption, scanning electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction. We systematically investigated the activation potential of these SNBC materials for PMS to degrade phenol. SN 1 BC-800 with the best catalytic performance was obtained by changing the activation temperatures and the ratio of biochar to melamine. The effects of catalyst dosage, the PMS concentration, pH, and reaction temperature on phenol degradation were studied in detail. In the presence of 0.3 g/L SN 1 BC-800 and 1 g/L PMS, the removal rate of 20 mg/L phenol could reach 100% within 5 min. According to electron paramagnetic resonance spectra and free radical quenching experiments, a nonfree radical pathway of phenol degradation dominated by 1 O 2 and electron transfer was proposed. More interestingly, the excellent catalytic performance of the SN 1 BC-800/PMS system is universally applicable in the degradation of other typical organic pollutants. In addition, the degradation rate of phenol is still over 80% after five reuses, which shows that the SN 1 BC-800 catalyst has high stability and good application prospects in environmental remediation.

show abstract