非金属矿
非金屬礦
비금속광
NON-METALLIC MINES
2013年
3期
73-75
,共3页
丙烯酰胺%膨润土%吸附%拟一级动力学方程%Langmuir等温吸附方程
丙烯酰胺%膨潤土%吸附%擬一級動力學方程%Langmuir等溫吸附方程
병희선알%팽윤토%흡부%의일급동역학방정%Langmuir등온흡부방정
acrylamide%bentonite%adsorption%pseudo-first-order kinetic equation%Langmuir isotherm
针对水处理过程中使用聚丙烯酰胺后残留丙烯酰胺的问题,以膨润土为吸附剂,研究了膨润土对丙烯酰胺的吸附规律.结果表明,膨润土对丙烯酰胺的吸附过程符合拟一级动力学方程和Langmuir等温吸附方程,最大饱和吸附量Qmax为232.558 mg/g,吸附热为3.92 kJ/mol,主要为物理吸附.通过XRD和FT-IR表征,分析丙烯酰胺主要通过-NH2和-C=O基团与膨润土产生氢键作用,并发生插层吸附.
針對水處理過程中使用聚丙烯酰胺後殘留丙烯酰胺的問題,以膨潤土為吸附劑,研究瞭膨潤土對丙烯酰胺的吸附規律.結果錶明,膨潤土對丙烯酰胺的吸附過程符閤擬一級動力學方程和Langmuir等溫吸附方程,最大飽和吸附量Qmax為232.558 mg/g,吸附熱為3.92 kJ/mol,主要為物理吸附.通過XRD和FT-IR錶徵,分析丙烯酰胺主要通過-NH2和-C=O基糰與膨潤土產生氫鍵作用,併髮生插層吸附.
침대수처리과정중사용취병희선알후잔류병희선알적문제,이팽윤토위흡부제,연구료팽윤토대병희선알적흡부규률.결과표명,팽윤토대병희선알적흡부과정부합의일급동역학방정화Langmuir등온흡부방정,최대포화흡부량Qmax위232.558 mg/g,흡부열위3.92 kJ/mol,주요위물리흡부.통과XRD화FT-IR표정,분석병희선알주요통과-NH2화-C=O기단여팽윤토산생경건작용,병발생삽층흡부.
According to the problem of residual acrylamide for the polyacrylamide used in water treatment, the bentonite was chosen as absorbent, and the adsorption of acrylamide was studied. The results showed that the adsorption of acrylamide on bentonite followed the pseudo-first-order kinetic equation and fitted Langmuir isotherm. The adsorption capacity Qmax was 232.558 mg/g. The sorption energy was 3.92 kJ/mol, it was indicated that the adsorption was physical adsorption. FT-IR and XRD were employed to characterize the sample. It was considered that the acrylamide interacted with bentonite depending on hydrogen bonding of -NH2 and -C=O groups, and the acrylamide was absorbed and inserted in layer of bentonite.
