CAJ | 학술논문

以稻壳为原料，氯化锌为活化剂，运用微波电加热双模式制备活性炭，并研究了活性炭净化水中重金属（六价）铬离子的机理．通过单因素实验得到制备活性炭的最佳工况为：活化温度600℃，活化时间50 min，浸渍比（m（氯化锌）∶m（稻壳））1.5∶1，升温速率15℃／min．使用FT-IR、比表面积及孔径分析仪（ BET）、pHIEP （等电位点pH）等方法表征最佳工况下活性炭的孔隙特性及表面化学性质．实验结果表明，稻壳活性炭的比表面积达到了1719.32 m2／g，总孔容1.05 cm3／g．进一步研究了吸附时间、pH值、活性炭投加量及（六价）铬离子初始浓度对活性炭吸附重金属（六价）铬离子的影响规律，结果表明，在pH＝2.0～3.0时，最佳工况下制备的活性炭具有最大吸附量，并且在90 min时达到吸附平衡．
이도각위원료，록화자위활화제，운용미파전가열쌍모식제비활성탄，병연구료활성탄정화수중중금속（륙개）락리자적궤리．통과단인소실험득도제비활성탄적최가공황위：활화온도600℃，활화시간50 min，침지비（m（록화자）∶m（도각））1.5∶1，승온속솔15℃／min．사용FT-IR、비표면적급공경분석의（ BET）、pHIEP （등전위점pH）등방법표정최가공황하활성탄적공극특성급표면화학성질．실험결과표명，도각활성탄적비표면적체도료1719.32 m2／g，총공용1.05 cm3／g．진일보연구료흡부시간、pH치、활성탄투가량급（륙개）락리자초시농도대활성탄흡부중금속（륙개）락리자적영향규률，결과표명，재pH＝2.0～3.0시，최가공황하제비적활성탄구유최대흡부량，병차재90 min시체도흡부평형．
Taking rice husk as raw material and zinc chloride as activation, the activated carbon was prepared by microwave and electric dual-mode heating.The mechanism of removal of chromium (Ⅵ) ions in water were studied.The optimum conditions, including the activation temperature of 600℃, the activation time of 50 min, the impregnation ratio (m(ZnCl2)∶m(rice husk)) of 1.5∶1, and the heating rate of 15℃/min were obtained through single factor experiments.The porous char-acteristics and surface chemical properties of activated carbon under optimum conditions were charac-terized by FTIR, specific surface area and porosity analyzer and pHIEP ( pH of isoelectric point) .The influence laws on Cr (Ⅵ) adsorption capacity by the contact time, pH, adsorbent dose and initial concentration of Cr (Ⅵ) ions were investigated.The results show that the specific surface area a-chieves 1 719.32 m2/g, and the total pore volume was 1.05 cm3/g.For the activated carbon from optimum conditions the maximum adsorption capacity is achieved when pH is between 2.0 and 3.0, and equilibrium adsorption stage is attained within 90 min.