化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2014年
3期
758-761
,共4页
交联β-环糊精%超声%苯酚废水%吸附
交聯β-環糊精%超聲%苯酚廢水%吸附
교련β-배호정%초성%분분폐수%흡부
crosslinkingβ-cyclodextrin%ultrasound%phenol wastewater%absorption
环糊精因其特殊的结构特点,尤其是经过交联剂改性的交联β-环糊精(MDI-β-CD),可以处理与其空腔尺寸匹配的苯酚污染物,具有更好的处理苯酚废水的能力。为进一步提高 MDI-β-CD 处理苯酚废水的效果,研究其在超声协同条件下的废水处理能力和适合工况。通过对MDI-β-CD用量、废水pH值、废水浓度、超声声强和频率的研究,找到处理苯酚废水的适合工艺条件:超声频率20 kHz,超声声强0.2 W/cm2,苯酚初始浓度100 mg/L,pH值6.0,溶液体积100 mL,反应温度40℃,吸附时间120 min,MDI-β-CD用量40 g/L;在此条件下, MDI-β-CD与超声协同处理苯酚废水吸附效率可以达到94.1%。
環糊精因其特殊的結構特點,尤其是經過交聯劑改性的交聯β-環糊精(MDI-β-CD),可以處理與其空腔呎吋匹配的苯酚汙染物,具有更好的處理苯酚廢水的能力。為進一步提高 MDI-β-CD 處理苯酚廢水的效果,研究其在超聲協同條件下的廢水處理能力和適閤工況。通過對MDI-β-CD用量、廢水pH值、廢水濃度、超聲聲彊和頻率的研究,找到處理苯酚廢水的適閤工藝條件:超聲頻率20 kHz,超聲聲彊0.2 W/cm2,苯酚初始濃度100 mg/L,pH值6.0,溶液體積100 mL,反應溫度40℃,吸附時間120 min,MDI-β-CD用量40 g/L;在此條件下, MDI-β-CD與超聲協同處理苯酚廢水吸附效率可以達到94.1%。
배호정인기특수적결구특점,우기시경과교련제개성적교련β-배호정(MDI-β-CD),가이처리여기공강척촌필배적분분오염물,구유경호적처리분분폐수적능력。위진일보제고 MDI-β-CD 처리분분폐수적효과,연구기재초성협동조건하적폐수처리능력화괄합공황。통과대MDI-β-CD용량、폐수pH치、폐수농도、초성성강화빈솔적연구,조도처리분분폐수적괄합공예조건:초성빈솔20 kHz,초성성강0.2 W/cm2,분분초시농도100 mg/L,pH치6.0,용액체적100 mL,반응온도40℃,흡부시간120 min,MDI-β-CD용량40 g/L;재차조건하, MDI-β-CD여초성협동처리분분폐수흡부효솔가이체도94.1%。
New functional materials crosslinkingβ-cyclodextrin(MDI-β-CD) can be used for better treatment of wastewater containing phenol because of the special structure. Modified crosslinkingβ-cyclodextrins has the ability to absorb phenol pollutants because of the porous structure. In order to improve treatment effects,the treatment abilities of MDI-β-CD and the suitable working conditions of the phenol wastewater were studied using ultrasonic. The dosage of MDI-β-CD , the pH and concentration of wastewater,ultra sound intensity and frequency were investigated. The suitable technological conditions of adsorption were determined as the following:pH 6.0,initial concentration 100 mg/L,wastewater volume 100 mL,new type crosslinking β-cyclodextrins 40 g/L,absorption temperature 40 ℃,absorption time 120 min. The ultrasound parameters were 0.2 W/cm2 of ultrasonic intensities and 20 kHz ultrasonic frequency. The absorption efficiency was up to 94.1%.