工业水处理
工業水處理
공업수처리
INDUSTRIAL WATER TREATMENT
2014年
12期
38-41
,共4页
水滑石%有机改性%染料废水%吸附
水滑石%有機改性%染料廢水%吸附
수활석%유궤개성%염료폐수%흡부
layered double hydroxides%organic modification%dye wastewater%adsorption
采用十六烷基三甲基溴化铵改性制得有机改性水滑石，并用XRD和红外光谱进行表征。考察了有机改性水滑石对染料废水的吸附能力及相关影响因素。结果表明，水滑石改性后对染料吸附能力提高，染料去除率随改性水滑石投加量的增加而提高，随染料初始浓度的增大而降低，温度太高不利于染料的吸附，pH对染料废水的处理效果影响不大。改性水滑石对染料的吸附可用Langmuir等温吸附方程拟合，二级吸附模型能很好地描述改性水滑石对染料的吸附行为。表征结果表明十六烷基三甲基溴化铵进入到水滑石层间，但水滑石结构并没有发生大的变化。
採用十六烷基三甲基溴化銨改性製得有機改性水滑石，併用XRD和紅外光譜進行錶徵。攷察瞭有機改性水滑石對染料廢水的吸附能力及相關影響因素。結果錶明，水滑石改性後對染料吸附能力提高，染料去除率隨改性水滑石投加量的增加而提高，隨染料初始濃度的增大而降低，溫度太高不利于染料的吸附，pH對染料廢水的處理效果影響不大。改性水滑石對染料的吸附可用Langmuir等溫吸附方程擬閤，二級吸附模型能很好地描述改性水滑石對染料的吸附行為。錶徵結果錶明十六烷基三甲基溴化銨進入到水滑石層間，但水滑石結構併沒有髮生大的變化。
채용십륙완기삼갑기추화안개성제득유궤개성수활석，병용XRD화홍외광보진행표정。고찰료유궤개성수활석대염료폐수적흡부능력급상관영향인소。결과표명，수활석개성후대염료흡부능력제고，염료거제솔수개성수활석투가량적증가이제고，수염료초시농도적증대이강저，온도태고불리우염료적흡부，pH대염료폐수적처리효과영향불대。개성수활석대염료적흡부가용Langmuir등온흡부방정의합，이급흡부모형능흔호지묘술개성수활석대염료적흡부행위。표정결과표명십륙완기삼갑기추화안진입도수활석층간，단수활석결구병몰유발생대적변화。
Organic modified layered double hydroxides(LDHs) has been prepared by the modification of cetyltrime-thyl ammonium bromide (CTAB),and characterized by XRD and FT-IR,respectively. The adsorption capacity of organic modified layered double hydroxide for dye wastewater and the corresponding influencing factors are systematically investigated. The results show that the modified LDHs can improve its adsorption capacity for dye. The dye removing rate increases with the increase of LDHs dosage and decreases with the increase of initial concentration of dye. High temperature is not good for dye adsorption ,but pH does not have much influence on the treatment efficiency of dye wastewater. The adsorption of modified LDHs can be fitted by Langmuir isotherm adsorption equation,and the secondary adsorption model can well describe the adsorption behavior of modified LDHs. The characterization results show that cetyltrimethyl ammonium bromide has entered into the layers of LDHs , but there has not been much change in the structure of LDHs.
