石油学报（石油加工）
石油學報（石油加工）
석유학보（석유가공）
ACTA PETROLEI SINICA(PETROLEUM PROCESSING SECTION)
2014年
6期
1113-1118
,共6页
徐金兰%雷绒娟%邓海鑫%宋少花
徐金蘭%雷絨娟%鄧海鑫%宋少花
서금란%뢰융연%산해흠%송소화
土壤有机物%Fenton改性%H2 O2 浓度%Fe2+浓度%分批投加
土壤有機物%Fenton改性%H2 O2 濃度%Fe2+濃度%分批投加
토양유궤물%Fenton개성%H2 O2 농도%Fe2+농도%분비투가
soil organic matter%Fenton’ s modifications%concentration of hydrogen peroxide%concentration of Fe2+%stepwise addition
考察了提高 H2 O2浓度、增大Fe2＋浓度及 H2 O2分3次投加3种 Fenton改性条件对石油污染土壤有机物（SOM）和石油烃（TPH）氧化的影响。结果表明，提高 H2O2浓度时，过量的H2O2主要被SOM 氧化消耗了，并不能有效提高TPH的氧化效果；当H2O2投加摩尔浓度超过1100 mmol／L时，S1和S22种石油污染土壤中SOM氧化率大幅度提高，达10％～15％，而相应的TPH去除率基本不变，增幅仅0.5％。当Fe2＋摩尔浓度从5.8 mmol／L增大至8.7 mmol／L时，S1和S2土样中SOM的氧化率分别增大了4.7％和10.5％，表明投加过量的Fe2＋也会破坏SOM ，不利于土壤修复。将同样量的 H2 O2分3次投加， SOM 氧化率仅为3％～6％，与单次投加相比降低了25％，而TPH的氧化率大幅度提高至50％。在3种Fenton改性条件中，H2O2分批次投加是修复石油污染土壤的改性Fenton氧化技术适宜条件。
攷察瞭提高 H2 O2濃度、增大Fe2＋濃度及 H2 O2分3次投加3種 Fenton改性條件對石油汙染土壤有機物（SOM）和石油烴（TPH）氧化的影響。結果錶明，提高 H2O2濃度時，過量的H2O2主要被SOM 氧化消耗瞭，併不能有效提高TPH的氧化效果；噹H2O2投加摩爾濃度超過1100 mmol／L時，S1和S22種石油汙染土壤中SOM氧化率大幅度提高，達10％～15％，而相應的TPH去除率基本不變，增幅僅0.5％。噹Fe2＋摩爾濃度從5.8 mmol／L增大至8.7 mmol／L時，S1和S2土樣中SOM的氧化率分彆增大瞭4.7％和10.5％，錶明投加過量的Fe2＋也會破壞SOM ，不利于土壤脩複。將同樣量的 H2 O2分3次投加， SOM 氧化率僅為3％～6％，與單次投加相比降低瞭25％，而TPH的氧化率大幅度提高至50％。在3種Fenton改性條件中，H2O2分批次投加是脩複石油汙染土壤的改性Fenton氧化技術適宜條件。
고찰료제고 H2 O2농도、증대Fe2＋농도급 H2 O2분3차투가3충 Fenton개성조건대석유오염토양유궤물（SOM）화석유경（TPH）양화적영향。결과표명，제고 H2O2농도시，과량적H2O2주요피SOM 양화소모료，병불능유효제고TPH적양화효과；당H2O2투가마이농도초과1100 mmol／L시，S1화S22충석유오염토양중SOM양화솔대폭도제고，체10％～15％，이상응적TPH거제솔기본불변，증폭부0.5％。당Fe2＋마이농도종5.8 mmol／L증대지8.7 mmol／L시，S1화S2토양중SOM적양화솔분별증대료4.7％화10.5％，표명투가과량적Fe2＋야회파배SOM ，불리우토양수복。장동양량적 H2 O2분3차투가， SOM 양화솔부위3％～6％，여단차투가상비강저료25％，이TPH적양화솔대폭도제고지50％。재3충Fenton개성조건중，H2O2분비차투가시수복석유오염토양적개성Fenton양화기술괄의조건。
The oxidation of soil organic matter (SOM) and total petroleum hydrocarbon (TPH) in petroleum contaminated soil were investigated under three modified Fenton’s conditions ,including increase of H2O2 concentration ,increase of Fe2+ concentration and stepwise addition of H2O2 in order to understand the effect of SOM oxidation on the removal of TPH .The results showed that excessive amount of H2O2 was mainly consumed by SOM ,so removal of TPH hardly increased and the utilization of H2 O2 was low .The oxidation efficiency of SOM increased to 10% -15% in two petroleum contaminated soil samples while the corresponding removal efficiency of TPH kept constant with 0.5% increase only ,as the dosage of H2 O2 reached 1100 mmol/L .In addition ,4.7%and 10.8% of SOM oxidation efficiency was increased in two soil samples ,respectively ,when the Fe2+concentration was enhanced from 5.8 mmol/L to 8.7 mmol/L .Excessive dose of Fe2+ may be harmful to remediation of soil ,because SOM was undermined .It is interesting that low oxidation efficiency of SOM (3% -6% ) was observed in two soil samples with stepwise addition of H2O2 , which was 25% lower than that with one‐time addition ,and the corresponding removal efficiency of TPH was up to 50% .So ,modified Fenton method with stepwise addition of H2 O2 is suitable for remediation of petroleum‐contaminated soil .
