Study on the adsorption mechanism of Cu2+ by steel slag-manganese slag composite ceramics

doi:10.19965/j.cnki.iwt.2021-1103

Abstract

Abstract:

Steel slag-manganese slag composite ceramsite were prepared to study the adsorption characteristics of Cu²⁺containing aqueous solution. The effects of material ratio， experimental temperature， adsorption time， stirring speed and initial mass concentration of Cu²⁺ on the adsorption rate of steel slag-manganese slag composite ceramsite were investigated， and the isothermal and kinetic models of Cu²⁺ adsorption by steel slag-manganese slag composite ceramsite were studied. The composite ceramsite were also characterized by XRD， XRF， SEM and BET， and the adsorption mechanism of Cu²⁺on steel slag-manganese slag composite ceramsite was discussed. The results showed that the composite ceramsite contained a large number of silicate compounds and basic oxides， and also had a large surface area. After hydrolysis， the ceramsite had a strong adsorption capacity for Cu²⁺. The optimal mass ratio of steel slag and manganese slag was 5∶5. The temperature has less influence on the adsorption process of Cu²⁺. During the adsorption process， the removal rate increased significantly with the increase of stirring speed when the stirring speed was in the range of 100-300 r/min. The equilibrium adsorption time was 30 minutes， and the initial mass concentration of Cu²⁺ with the best adsorption effect was 500 mg/L. After the initial mass concentration exceeded 500 mg/L， the removal rate of Cu²⁺decreased significantly with the increase of the initial mass concentration. The adsorption process of Cu²⁺ by steel slag-manganese slag composite ceramics was monolayer adsorption， and its adsorption process was in accordance with Langmuir isothermal adsorption model. The theoretical maximum saturated adsorption amount was 83.3 mg/g and the actual maximum saturated adsorption amount was 80.69 mg/g during the adsorption process. The adsorption of Cu²⁺ by steel slag-manganese slag composite ceramsite was in accordance with the quasi-secondary kinetic model， and its adsorption process was mainly chemisorption.

Key words: steel slag, manganese slag, Cu²⁺, ceramsite, adsorption

摘要：

制备了钢渣-锰渣复合陶粒，研究其对含Cu²⁺水溶液的吸附特性。考察了钢渣-锰渣复合陶粒的材料配比、实验温度、吸附时间、搅拌速度、Cu²⁺初始质量浓度对吸附效果的影响，研究了钢渣-锰渣复合陶粒吸附Cu²⁺的等温模型和动力学模型。同时用XRD、XRF、SEM、BET对该复合陶粒进行表征，讨论钢渣-锰渣复合陶粒对Cu²⁺的吸附机理。结果表明，复合陶粒中含有大量硅酸化合物和碱性氧化物，同时具有较大的表面积，水解后对Cu²⁺有较强的吸附能力。钢渣、锰渣的最佳质量比为5∶5；温度对Cu²⁺的吸附过程影响较小。吸附过程中，搅拌速度在100~300 r/min范围内时，去除率随搅拌速度的增加而显著上升。平衡吸附时间为30 min，吸附效果最佳的Cu²⁺初始质量浓度为500 mg/L，初始质量浓度超过500 mg/L后，Cu²⁺去除率随初始质量浓度的升高而显著下降。钢渣-锰渣复合陶粒对Cu²⁺的吸附过程为单层吸附，其吸附过程符合Langmuir等温吸附模型。吸附过程中理论最大饱和吸附量为83.3 mg/g，实际最大饱和吸附量为80.69 mg/g。钢渣-锰渣复合陶粒吸附Cu²⁺符合准二级动力学模型，其吸附过程以化学吸附为主。

关键词: 钢渣, 锰渣, Cu²⁺, 陶粒, 吸附

CLC Number:

Zimu LI, Canhua LI, Yuhong ZHA, Minghui LI, Gang DU. Study on the adsorption mechanism of Cu²⁺ by steel slag-manganese slag composite ceramics[J]. Industrial Water Treatment, 2022, 42(8): 113-119.

李子木, 李灿华, 查雨虹, 李明晖, 都刚. 钢渣-锰渣复合陶粒对Cu²⁺的吸附机理研究[J]. 工业水处理, 2022, 42(8): 113-119.

/ / Recommend / Download Citations

URL: https://www.iwt.cn/EN/10.19965/j.cnki.iwt.2021-1103

https://www.iwt.cn/EN/Y2022/V42/I8/113

Figures/Tables 16

Table 1 Main components and mass fraction of steel slag and manganese slag

项目	CaO	SiO₂	Fe₂O₃	Al₂O₃	MgO	MnO	P₂O₅	TiO₂
钢渣	42.59	17.05	16.33	10.78	5.83	2.55	1.81	1.76
锰渣	0.829	33.63	19.98	33.38	1.16	5.91	1.20	1.84

Fig. 1 XRD of steel slag（a）， manganese slag（b） and steel slag-manganese slag composite ceramsite（c）

Table 2

项目	钢渣	锰渣	复合陶粒B5
比表面积/（m²·g^-1）	5.596	19.512	22.234
孔容/（cm³·g^-1）	0.015	0.042	0.054

Fig. 2 Adsorption-desorption curve of steel slag-manganese slag composite ceramsite

Fig. 3 SEM of ceramsite before adsorption（a） and after adsorption（b）

Table 3 The effect of steel slag-manganese slag composite ceramsite with different proportions on the adsorption of Cu²⁺

m（钢渣）∶m（锰渣）	剩余铜质量浓度/（mg·L^-1）	去除率/%
10∶0	77.03	84.59
9∶1	15.7	96.86
8∶2	76.14	84.77
7∶3	53.91	89.22
6∶4	32.68	93.46
5∶5	14.75	97.05
4∶6	53.49	89.30
3∶7	106.49	78.70
2∶8	178.2	64.36
1∶9	318.27	36.35
0∶10	470	6

Table 4 The effect of adsorption time on the adsorption of Cu²⁺ by steel slag-manganese slag composite ceramsite

吸附时间/min	剩余铜质量浓度/（mg·L^-1）	去除率/%
1	356.55	29
3	314.46	37
6	238.14	52
10	135.28	73
15	70.1	86
20	36.4	93
25	24.86	95
30	0.11	100
35	0.02	100

Table 5 The effect of reaction temperature on the adsorption of Cu²⁺ by steel slag-manganese slag composite ceramsite

温度/℃	剩余铜质量浓度/（mg·L^-1）	去除率/%
25	4.773	99.04
35	0.588	99.88
45	0.422	99.91
50	0.364	99.93
60	0.112	99.98
65	0.149	99.97

Table 6 The effect of stirring speed on the adsorption of Cu²⁺ by steel slag-manganese slag composite ceramsite

搅拌速度/（r·min^-1）	剩余铜质量浓度/（mg·L^-1）	去除率/%
100	193.2	61.36
150	101.81	79.64
200	53.65	89.27
250	25.91	94.82
300	0.21	99.96
350	0.10	99.98
400	0.01	100
450	0.005	100

Table 7 The effect of initial mass concentration on the adsorption of Cu²⁺ by steel slag-manganese slag composite ceramsite

初始质量浓度/（mg·L^-1）	剩余铜质量浓度/（mg·L^-1）	去除率/%
200	0.23	100
300	0.24	100
400	2.21	99
500	2.51	99
600	29.82	95
700	55.28	92
800	80.96	90

Fig. 4 Cu²⁺ adsorption isotherm curve

Fig. 5 Langmuir isotherm adsorption equation（a）and Freundlich isotherm adsorption equation（b）

Table 8 Parameters in isothermal adsorption equation

等温吸附模型	参数	数值
Langmuir等温吸附模型	K _L/（L·mg^-1）	2.80
	q _max/（mg·g^-1）	83.3
	R ²	0.99
Freundlich等温吸附模型	K _F/〔mg·g^-1·（L·mg^-1） $1 n$ 〕	50.07
	n	9.44
	R ²	0.46

Table 8 Parameters in isothermal adsorption equation

等温吸附模型	参数	数值
Langmuir等温吸附模型	K _L/（L·mg^-1）	2.80
	q _max/（mg·g^-1）	83.3
	R ²	0.99
Freundlich等温吸附模型	K _F/〔mg·g^-1·（L·mg^-1） $1 n$ 〕	50.07
	n	9.44
	R ²	0.46

Fig. 6 Fitting curves of quasi-first-order kinetic model（a）and quasi-second-order kinetic model（b）

Table 9 Parameters in the kinetic model

项目	参数	数值
准一级动力学模型	k ₁/min^-1	0.21
	q _e/（mg·g^-1）	33.93
	R ²	0.97
准二级动力学模型	k ₂/（g·mg^-1·min^-1）	0.01
	q _e/（mg·g^-1）	33.78
	R ²	0.99

Table 10 Heavy metal content by TCLP method

项目	Cr	Hg	Cu	Zn	Pb
A	nd	nd	nd	nd	nd
B1	0.008 3	nd	0.000 20	nd	nd
B2	0.020	nd	nd	nd	nd
标准阈值	10	0.05	50	50	3

References 9

1	张龙强. 钢渣处理含铅、镉废水的性能研究［D］. 南京：南京理工大学， 2015.
	ZHANG Longqiang. Study on lead and cadmium removal from wastewater by steel slag［D］. Nanjing： Nanjing University of Science and Technology， 2015.
2	曾越，李徐立，陈宇驰，等. 电解锰渣基方沸石的制备及其对Pb²⁺的吸附性能［J］. 环境工程， 2020， 38（11）： 175-179.
	ZENG Yue， LI Xuli， CHEN Yuchi， et al. Preparation of analcite based on electrolytic manganese slag and study on its Pb²⁺ adsorption property［J］. Environmental Engineering， 2020， 38（11）： 175-179.
3	韩毅，周旻，万沙，等. 利用电解锰渣激发制备矿渣基胶凝材料的研究［J］. 环境科学与技术， 2019， 42（1）： 1-7.
	HAN Yi， ZHOU Min， WAN Sha， et al. Research on preparation of slag based cementing materials by electrolytic manganese residue［J］. Environmental Science ＆ Technology， 2019， 42（1）： 1-7.
4	王冰，张宝焓. 钢渣复合陶粒的制备及去除水中铅的研究［J］. 辽宁化工， 2020， 49（3）： 242-244. doi:10.3969/j.issn.1004-0935.2020.03.007
	WANG Bing， ZHANG Baohan. Study on preparation of steel slag composite ceramsite and its adsorption performance for lead ions in wastewater［J］. Liaoning Chemical Industry， 2020， 49（3）： 242-244. doi:10.3969/j.issn.1004-0935.2020.03.007
5	朱李俊，王文君，金强. 用钢渣除去废水中的Cr（Ⅲ）和Cr（Ⅵ）试验［J］. 矿产综合利用， 2019（5）： 98-101.
	ZHU Lijun， WANG Wenjun， JIN Qiang. Removal of Cr（Ⅲ） and Cr（Ⅵ） in wastewater by steel slag［J］. Multipurpose Utilization of Mineral Resources， 2019（5）： 98-101.
6	魏世勇. 几种吸附剂对氟的吸附特性的研究［J］. 湖北民族学院学报（自然科学版）， 2008， 26（1）： 81-84.
	WEI Shiyong. Adsorption characters of fluoride by several absorbents［J］. Journal of Hubei Institute for Nationalities （Natural Science Edition）， 2008， 26（1）： 81-84.
7	王传岭，于敏，周子媚. 柚子皮生物炭对铜离子的吸附［J］. 山东化工， 2020， 49（19）： 16-18. doi:10.3969/j.issn.1008-021X.2020.19.007
	WANG Chuanling， YU Min， ZHOU Zimei. Adsorption of copper ions by biochar of pomelo peel［J］. Shandong Chemical Industry， 2020， 49（19）： 16-18. doi:10.3969/j.issn.1008-021X.2020.19.007
8	余泽峰，宋卫锋，王超，等. CTAB改性地聚合物同时去除Cu（Ⅱ）和Cr（Ⅵ）［J］. 环境科学学报， 2020， 40（3）： 968-975.
	YU Zefeng， SONG Weifeng， WANG Chao， et al. Simultaneous removal of Cu（Ⅱ） and Cr（Ⅵ） with CTAB modified geopolymer［J］. Acta Scientiae Circumstantiae， 2020， 40（3）： 968-975.
9	LIU Yu. New insights into pseudo-second-order kinetic equation for adsorption［J］. Colloids and Surfaces A： Physicochemical and Engineering Aspects， 2008， 320（1/2/3）： 275-278. doi:10.1016/j.colsurfa.2008.01.032

[1]	Hengjun TANG, Biao QIU, Weiping SIMA, Jian TANG. Study on the removal of Cr(Ⅵ) by acid-modified distillers’ grains biochar [J]. Industrial Water Treatment, 2025, 45(3): 144-151.
[2]	Wei JIANG, Xiaodie CAI, Xinyu WEN, Sili CHEN, Jinsong WANG, Zhengke ZHANG. Preparation of mesoporous silica/sodium alginate composites and its removal performance of radioactive Sr²⁺ [J]. Industrial Water Treatment, 2025, 45(3): 90-98.
[3]	Qingyuan WANG, Yanping ZHANG, Yibing LI, Fen LI. Adsorption of methylene blue by biochar prepared using straw mixed with agricultural film [J]. Industrial Water Treatment, 2025, 45(3): 110-120.
[4]	Yasong CHEN, Shiyu MIAO, Chi ZHANG, Mingran LI, Jiaqi WANG, Yanyu ZHANG, Wei JIANG. Research progress on the preparation and the adsorption mechanisms of phosphorus removal adsorbents [J]. Industrial Water Treatment, 2025, 45(2): 1-9.
[5]	Wenhao WANG, Yexing CHENG, Yuyin WANG, Tingting HOU, Xiaofeng WU, Yucai LI. Effect of different types of activated carbon on the adsorption- reduction of Cr(Ⅵ) by mZVI/activated carbon [J]. Industrial Water Treatment, 2025, 45(2): 150-158.
[6]	Xianchun PENG, Lili ZHENG, Haoran LU, Zhefeng WANG, Zheng ZHU, Wenyan LIANG. Performance of sulfur/steel slag composite matrix in removing nitrate from surface water with low-carbon content [J]. Industrial Water Treatment, 2025, 45(1): 41-48.
[7]	Qing LIU, Jianbin HUANG, Weifan LI, Guodong ZHAO, Jingjing YANG. Performance of U(Ⅵ) enrichment by tannic acid sodium and alginate composite microspheres [J]. Industrial Water Treatment, 2025, 45(1): 58-65.
[8]	Weiye ZHANG, Jing SHEN, Zihe PAN, Yipeng SONG, Huaigang CHENG, Huirong ZHANG. Analysis of heel formation and influencing factors during the thermal regeneration process of saturated activated carbon [J]. Industrial Water Treatment, 2025, 45(1): 17-25.
[9]	Cuihong ZHANG, Jing WANG, Jie WANG, Wenjiao YUAN. Preparation of quaternary ammonium-modified silica and its adsorption of vanadium(V) [J]. Industrial Water Treatment, 2025, 45(1): 104-114.
[10]	Zhihua DENG, Rui LIU, Biqing LI. Preparation of different biochars and their adsorption performance for heavy metals and antibiotics [J]. Industrial Water Treatment, 2025, 45(1): 94-103.
[11]	Zirui GUO, Hongyan LI, Feng ZHANG, Jiali CUI, Qun YANG, Yun LI. Performance and mechanism of catalytic degradation of benzotriazole in water by Fe₂O₃-CuO/rCG [J]. Industrial Water Treatment, 2024, 44(9): 118-126.
[12]	Qin DENG, Yijian ZHONG, Jincheng LI, Huihui SHI, Chunman WEI, Jiajia QIN. Preparation and regeneration ability test of a new type of phosphorus removal filler [J]. Industrial Water Treatment, 2024, 44(8): 140-148.
[13]	Ya HU, Xiaolei SUN, Jingyu LU, Xiuyun SUN. Preparation of Tymycin waste salt activated carbon and its adsorption performance for EDTA-Pb(Ⅱ) [J]. Industrial Water Treatment, 2024, 44(8): 133-139.
[14]	Haoyu ZHANG, Yikang ZHOU, Yan WANG, Le PAN, Yunfei WANG, Dezhang ZHU, Yan WU. Preparation and adsorption study of waste tea-based porous carbon for methyl orange dyes [J]. Industrial Water Treatment, 2024, 44(8): 171-177.
[15]	Longji GAO, Zhiqing ZHAO, Yuan MA, Jing YUE, Wenjie LIAO, Minghui HUANG. Removal of 2,4-difluoroanilne and Cu²⁺ by Diaphorobacter sp. DFA4 assistedmagnetic biochar [J]. Industrial Water Treatment, 2024, 44(8): 90-98.

Please choose a citation manager

Content to export

Study on the adsorption mechanism of Cu²⁺ by steel slag-manganese slag composite ceramics

钢渣-锰渣复合陶粒对Cu²⁺的吸附机理研究

RichHTML

PDF

Knowledge

Cited

Abstract

Cite this article

share this article

Figures/Tables 16

References 9

Related Articles 15

Recommended Articles

Metrics

Comments

模态框（Modal）标题

Please choose a citation manager

Content to export