CAJ | 학술논문

考察了Mg~(2+)、Mn~(2+)、丙烯酸/2-丙烯酰胺基-2-甲基丙烯磺酸/丙烯酸羟丙酯共聚物(AA/AMPS/HPA)和氨基三亚甲基膦酸(ATMP)抑制CaCO_3沉积的协同效应;采用协同系数确定了协同作用较明显的区域,运用经典的均相成核理论解释了抑制机理;利用扫描电子显微镜和X射线衍射技术表征了CaCO_3的形貌和晶型.结果表明,在AA/AMPS/HPA+ATMP的质量浓度较低(低于14 mg/L或10 mg/L)时,Mg~(2+)、Mn~(2+)、AA/AMPS/HPA和ATMP共存体系对CaCO_3的协同抑制作用明显,协同系数均大于1.杂质离子及有机抑制剂对CaCO_2的抑制作用,缘于混合体系提高了CaCO_3析出时的表面自由能和结晶活化能.混合体系使CaCO_3沉积物形貌发生强烈的变化,CaCO_3的晶型从单纯的方解石转换成以球霰石为主的晶型.
고찰료Mg~(2+)、Mn~(2+)、병희산/2-병희선알기-2-갑기병희광산/병희산간병지공취물(AA/AMPS/HPA)화안기삼아갑기련산(ATMP)억제CaCO_3침적적협동효응;채용협동계수학정료협동작용교명현적구역,운용경전적균상성핵이론해석료억제궤리;이용소묘전자현미경화X사선연사기술표정료CaCO_3적형모화정형.결과표명,재AA/AMPS/HPA+ATMP적질량농도교저(저우14 mg/L혹10 mg/L)시,Mg~(2+)、Mn~(2+)、AA/AMPS/HPA화ATMP공존체계대CaCO_3적협동억제작용명현,협동계수균대우1.잡질리자급유궤억제제대CaCO_2적억제작용,연우혼합체계제고료CaCO_3석출시적표면자유능화결정활화능.혼합체계사CaCO_3침적물형모발생강렬적변화,CaCO_3적정형종단순적방해석전환성이구산석위주적정형.
The synergistic effects of Mg~(2+), Mn~(2+), polymer acrylic acid /2-acrylarnido-2-methylpropane sulfonic acid /hydroxypropyl acrylate (AA/AMPS/HPA) and aminotrimethylenephosphonic acid (ATMP) on the inhibition of CaCO_3 precipitation were studied. The obvious synergy regions were confirmed according to the synergistic parameters. The inhibitory mechanism was discussed according to the light of homogeneous nucleation theory. The crystal of CaCO_3 was characterized by means of SEM and XRD. There were good synergistic effects on CaCO_3 inhibition in the presence of combination of Mn~(2+) or Mg~(2+), AA/AMPS/HPA and ATMP with lower concentration of AA/AMPS/HPA+ATMP (lower than 14 mg/L or 10 mg/L). The synergistic parameters were more than 1. The inhibition effect of ion impurities and organic additives on CaCO~(2+) might result from the increasing of surface free energy and activation energy. The regular shapes of CaCO_3 crystals were changed obviously in the presence of impurity ions and organic additives, that was, the crystalline form of CaCO_3 transformed from calcite into vaterite.