Adsorption of Cadmium on Fe-Mn Nodules Derived From Soil by Spectral Methods

Chun-hui FAN; Jin-huan ZHENG; Yu-fei WANG; Zhe SU; Long-jian LIN; Chen YANG

doi:10.3964/j.issn.1000-0593(2022)02-0616-06

Journals >Spectroscopy and Spectral Analysis >Volume 42 >Issue 2 >Page 616 > Article

Spectroscopy and Spectral Analysis
Vol. 42, Issue 2, 616 (2022)

Adsorption of Cadmium on Fe-Mn Nodules Derived From Soil by Spectral Methods

Chun-hui FAN^1、*, Jin-huan ZHENG^3、3;, Yu-fei WANG^3、3;, Zhe SU^3、3;, Long-jian LIN^3、3;, and Chen YANG^3、3;

Author Affiliations

¹1. College of Life Sciences, Shenyang Normal University, Shenyang 110031, China

³3. School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China

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DOI: 10.3964/j.issn.1000-0593(2022)02-0616-06 Cite this Article

Chun-hui FAN, Jin-huan ZHENG, Yu-fei WANG, Zhe SU, Long-jian LIN, Chen YANG. Adsorption of Cadmium on Fe-Mn Nodules Derived From Soil by Spectral Methods[J]. Spectroscopy and Spectral Analysis, 2022, 42(2): 616 Copy Citation Text

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Fig. 1. X-ray diffaraction pattern of Fe-Mn nodules sample

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Fig. 2. FTIR spectrum of Fe-Mn nodules sample

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Fig. 3. Effect of reaction conditions on adsorption process

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Fig. 4. Adsorption kinetics of Cd on Fe-Mn nodules sample

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Fig. 5. Adsorption isotherms of Cd on Fe-Mn nodules sample

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样品		主量元素氧化物/(mg·g^-1)
样品		SiO₂	Al₂O₃	Fe₂O₃	MnO	K₂O	Na₂O	MgO	CaO
铁锰结核	小于0.25 mm	253.2	163.7	309.6	30.2	5.68	1.89	1.41	2.03
	0.25~0.5 mm	267.4	162.4	323.8	26.4	5.02	2.25	1.37	2.21
	0.5~1 mm	269.6	168.4	315.4	28.3	5.86	2.14	1.55	1.87
	1~2 mm	288.5	165.5	320.9	25.5	5.15	2.23	1.62	2.08
	大于2 mm	289.1	162.2	301.7	29.6	5.17	2.09	1.29	1.94
	本文使用	271.3	165.9	312.9	26.6	5.33	2.11	1.45	1.99
土壤基质		583.2	183.5	56.8	1.07	7.41	3.32	1.65	1.21

Table 1. Contents of main elemental oxides in Fe-Mn nodules and soil samples

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T/ K	ΔH⁰/ (kJ·mol^-1)	ΔG⁰/ (kJ·mol^-1)	ΔS⁰/ [J·(mol·K)^-1]
278		-4.34
283		-4.75
288		-5.16
293	8.14	-5.57	160.23
298		-5.98
303		-6.39
308		-6.80

Table 2. Thermodynamic parameters of Cd adsorption on Fe-Mn nodules sample

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溶液体积/mL	洗脱率/%
溶液体积/mL	纯净水	自来水	酸液
50	33.66	38.45	47.33
100	35.95	40.21	53.66
150	38.25	42.26	55.25
200	39.32	43.05	56.91
250	40.35	43.58	57.45
500	40.67	43.78	57.98
750	41.11	43.91	58.41
1 000	41.35	44.02	58.68

Table 3. Desorption effect of Fe-Mn nodules sample with different aqueous solutions

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