CAJ | 학술논문

为了经济实用地对废水进行处理,将来源广泛的黑藻制成粉末加入到含铜、镍离子的废水中,研究了其对废水中铜、镍离子的吸附作用,考察了溶液pH值、金属离子初始浓度、吸附剂用量、吸附时间和干扰离子等因素对吸附性能的影响.结果表明:黑藻吸附2种重金属离子的速度快,30 min即达到吸附平衡,适宜的pH值为5.0～6.0,干扰离子对Ni2+的影响大于对Cu2+的影响;黑藻对2种重金属的吸附均符合Langmiur,FreunoUich和Dubinin-Radushkevich(D-R)模型,对2种金属离子的吸附能力顺序是:Cu2+>Ni2+.
위료경제실용지대폐수진행처리,장래원엄범적흑조제성분말가입도함동、얼리자적폐수중,연구료기대폐수중동、얼리자적흡부작용,고찰료용액pH치、금속리자초시농도、흡부제용량、흡부시간화간우리자등인소대흡부성능적영향.결과표명:흑조흡부2충중금속리자적속도쾌,30 min즉체도흡부평형,괄의적pH치위5.0～6.0,간우리자대Ni2+적영향대우대Cu2+적영향;흑조대2충중금속적흡부균부합Langmiur,FreunoUich화Dubinin-Radushkevich(D-R)모형,대2충금속리자적흡부능력순서시:Cu2+>Ni2+.
The adsorption behavior of Hydrilla Verticillata for Cu2+ and Ni2+ in wastewater was studied. The effects of pH value of the wastewater, initial con-centration of metal ions, dosage of the biosorbent, contact time and interference ions on the adsorption behavior were studied. It was found that Hydrilla Verticillata was able to adsorb the two kinds of heavy metal ions, and the adsorption reached balance 30 min later. The suitable pH value for adsorption was 5.0, and mixed-metal ions had a larger effect on the adsorption behavior of Hydrilla Verticillata for Ni2+ than for Cu2+. Moreover, the ad-sorption behavior of Hydrilla Verticillata for Ni2+ and Cu2+ could be fitted by using Langmiur, Freundlich and D-R equations. The order of adsorption capacity was ranked as Cu2+ > Ni2+.