铁掺杂生物炭活化过一硫酸盐降解十二烷基硫酸钠增溶萘的性能与机制
Performance and mechanism of sodium dodecyl sulfate-solubilized naphthalene degradation via peroxymonosulfate activation by iron-doped biochar
Aiming at the technical bottleneck of difficult degradation of sodium dodecyl sulfate (SDS)-solubilized naphthalene composite wastewater,iron-doped biochar (Fe-BC) was prepared by impregnation and pyrolysis at 600℃ under nitrogen atmosphere using walnut shell as carbon source,and used to activate peroxymonosulfate (PMS) for naphthalene degradation.The results showed that Fe-BC exhibited significantly better catalytic performance than pristine biochar,achieving 87.37% naphthalene removal within 60 min under optimal conditions.The system maintained stable performance at pH 3-11,strong resistance to common inorganic anions,good activity after 7 cycles,and low iron leaching below the national standard.It also worked efficiently at 5-15℃.The degradation was dominated by sulfate radical with hydroxyl radical as auxiliary,providing technical support for similar wastewater treatment.
铁掺杂生物炭 / 过一硫酸盐 / 萘 / 十二烷基硫酸钠 / 复合污染废水处理
iron-doped biochar / peroxymonosulfate / naphthalene / sodium dodecyl sulfate(SDS) / composite wastewater treatment
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