Abstract: P-nitrophenol-containing wastewater is of highly carcinogenic and poor biodegradability.Its long-term retention and enrichment in the environment will seriously endanger human health.A self-made TiZnSn/AC particle electrode is used to study the degradation of the simulated p-nitrophenol wastewater in photoelectric system.The influences of particle dosage,p-nitrophenol concentration,pH value and current density on the treatment efficiency and the degradation kinetics equation are investigated.The degradation process of p-nitrophenol is also studied.According to the changes of COD value and UV-Vis absorption spectrum during the degradation process,it is found that p-nitrophenol is gradually oxidized into small molecular substances through ring-opening under the action of free radicals and other active groups until they are completely degraded.It is proved that the three-dimensional photoelectrochemical system has good degradation ability to p-nitrophenol.
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