| 钢渣对Ni2+与Cu2+的竞争吸附研究 |
| |
| 引用本文： | 冯珊珊,汪凯举,章蓝月,顾子萱,李灿华.钢渣对Ni2+与Cu2+的竞争吸附研究[J].硅酸盐通报,2022,41(5):1750-1757. |
| |
| 作者姓名： | 冯珊珊 汪凯举 章蓝月 顾子萱 李灿华 |
| |
| 作者单位： | 1.安徽工业大学冶金工程学院,马鞍山 243000; 2.宣城市宣城经开区科技创业服务中心,宣城 242000; 3.宣城市安工大工业技术研究院有限公司,宣城 242000 |
| |
| 摘 要： | 将转炉钢渣磨碎筛分,从钢渣投加量、吸附时间、酸性条件等方面探究其对水溶液中Ni2+的吸附性能及吸附机理,并讨论Cu2+对钢渣吸附Ni2+的影响。研究结果表明,100 mL浓度为50 mg·L-1的Ni2+溶液,用200目(0.074 mm)0.15 g的钢渣处理30 min,Ni2+的吸附率为99.88%。钢渣吸附Ni2+的过程符合准二级动力学模型和Freundlich等温模型。钢渣吸附Cu2+与吸附Ni2+属于竞争吸附,且钢渣对Cu2+的吸附能力优于对Ni2+的吸附能力。钢渣吸附Ni2+的过程以化学吸附为主,伴随着物理吸附,且随着钢渣表层吸附位点的减少,钢渣对Ni2+的物理吸附作用会逐渐减弱。该研究对处理工业含Ni2+与Cu2+的废水具有一定的指导意义。
|
| 关 键 词： | 钢渣 吸附 Ni2+ Cu2+ 竞争吸附 废水处理 |
| 收稿时间： | 2021-12-28 |
Study on Competitive Adsorption of Ni2+ and Cu2+ by Steel Slag |
| |
| FENG Shanshan,WANG Kaiju,ZHANG Lanyue,GU Zixuan,LI Canhua.Study on Competitive Adsorption of Ni2+ and Cu2+ by Steel Slag[J].Bulletin of the Chinese Ceramic Society,2022,41(5):1750-1757. |
| |
| Authors: | FENG Shanshan WANG Kaiju ZHANG Lanyue GU Zixuan LI Canhua |
| |
| Affiliation: | 1. College of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243000, China; 2. Science and Technology Entrepreneurship Service Center, Xuancheng Economic Development Zone, Xuancheng 242000, China; 3. Xuancheng Industrial Technology Research Institute of Anhui University of Technology Co., Ltd., Xuancheng 242000, China |
| |
| Abstract: | The adsorption performance and mechanism of converter steel slag for Ni2+ in aqueous solution were discussed from the aspects of steel slag dosage, adsorption time and acid conditions, and the effect of Cu2+ on the adsorption of Ni2+by steel slag was also discussed. The results show that when 100 mL Ni2+ solution with a concentration of 50 mg·L-1 is treated with 200 mesh (0.074 mm) 0.15 g steel slag at 25 ℃ for 30 min, the adsorption capacity of Ni2+ is 33.290 mg·g-1 (adsorption rate is 99.88%). The adsorption process of Ni2+ by steel slag conforms to the pseudo-second-order kinetic equation and Freundlich isothermal model, and the correlation coefficient R2 is 0.984 and 0.994, respectively. The adsorption of Ni2+ and Cu2+ by steel slag belongs to competitive adsorption, and the adsorption capacity of Cu2+ by steel slag is better than that of Ni2+. When the pH value is very low, the adsorption effect of steel slag on Ni2+ and Cu2+ is poor. The adsorption process of steel slag on Ni2+ is mainly chemical adsorption, accompanied by physical adsorption, and with the decrease of adsorption sites on the steel slag surface, the physical adsorption of steel slag on Ni2+ will gradually weaken. The research may provide some guidance to the treatment of industrial wastewater containing Ni2+ and Cu2+. |
| |
| Keywords: | steel slag adsorption Ni2+ Cu2+ competitive adsorption effluent treatment |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《硅酸盐通报》浏览原始摘要信息 |
|
点击此处可从《硅酸盐通报》下载全文 |
|
