摘要
Abstract
Taking coal gangue as the silicon-aluminum source,coal gangue-based zeolite molecular sieve is prepared via the alkali fusion-hydrothermal crystallization method,and its adsorption performance for copper ions(Cu2+)in wastewater is investigated.The X-ray diffraction,scanning electron microscope,and BET surface area and pore size analyzer results indicate that the product exhibits high crystallinity,a specific surface area of approximately 66 m2/g,and a composite microporous-mesoporous pore structure.Simulated Cu2+-containing wastewater is prepared,and the effects of zeolite molecular sieve dosage,solution pH value,adsorption temperature,and adsorption time are systematically investigated.When the dosage of zeolite molecular sieve is 0.24%,the solution pH value is 6,the adsorption temperature is 40℃,and the adsorption time is 60 min,the adsorption rate of Cu2+from wastewater reaches 92.28%,with an equilibrium adsorption capacity of 115.7 mg/g.The results indicate that the coal gangue-based zeolite molecular sieve exhibits high adsorption capacity and removal rate for Cu2+,making it a suitable low-cost adsorbent material for heavy metal wastewater.关键词
煤矸石基沸石分子筛/碱熔-水热晶化法/铜离子/吸附性能/废水Key words
coal gangue-based zeolite molecular sieve/alkali fusion-hydrothermal crystallization method/copper ions/adsorption performance/wastewater分类
化学化工
