CAJ | 학술논문

研究了水溶液中萘在粘胶基活性炭纤维(VACF)吸附剂上的等温吸附.用多种吸附方程(Langmuir、Freundlich、Dubinin-Radushkevitch(D-R)、Dubinin-Astalov(D-A)、Langmuir-Freundlich(L-F)、Redlich-Pcterson(R-P))对吸附实验数据进行拟合,考察了温度、pH和负载铜离子对萘吸附的影响.方程拟合结果表明微孔吸附容积填充理论对VACF吸附萘有较好的适用性,优于单层吸附理论.在20-40℃之间,萘的吸附是自发进行的,30℃以上时,萘的吸附量显著降低.提出了新的机理来解释pH较低时吸附量显著上升的实验现象.负载铜离子后VACF对萘吸附量降低.
연구료수용액중내재점효기활성탄섬유(VACF)흡부제상적등온흡부.용다충흡부방정(Langmuir、Freundlich、Dubinin-Radushkevitch(D-R)、Dubinin-Astalov(D-A)、Langmuir-Freundlich(L-F)、Redlich-Pcterson(R-P))대흡부실험수거진행의합,고찰료온도、pH화부재동리자대내흡부적영향.방정의합결과표명미공흡부용적전충이론대VACF흡부내유교호적괄용성,우우단층흡부이론.재20-40℃지간,내적흡부시자발진행적,30℃이상시,내적흡부량현저강저.제출료신적궤리래해석pH교저시흡부량현저상승적실험현상.부재동리자후VACF대내흡부량강저.
We studied the isothermal adsorption of naphthalene on a viscose-based activated carbon fiber (VACF) in aqueous solution. The adsorption experimental data were fitted to adsorption equations such as the Langmuir, Freundlich, Dubinin-Radushkevitch (D-R), Dubinin-Astalov (D-A), Langmuir-Freundlich (L-F), and Redlich-Peterson (R-P) equations. The effects of temperature, pH, and pre-loaded copper ions on the VACF on the adsorption of naphthalene were investigated. The fitting results show that the micropore volume filling theory fits better than the single-layer adsorption theory for naphthalene adsorption onto VACF. The adsorption of naphthalene occurs spontaneously between 20 and 40 ℃. The adsorption capacity of VACF for naphthalene decreases significantly above 30 ℃. A new mechanism is proposed to explain why the adsorption capacity increases significantly in lower pH aqueous solutions. The reduction of naphthalene takes place on the VACF with pre-loaded copper ions.