Effects of different conditions on Pb2+ adsorption from soil by irrigation of sewage in South China

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	Effects of different conditions on Pb2+ adsorption from soil by irrigation of sewage in South China
	Huang, GX (Huang Guan-xing)7; Zhang, Y (Zhang Ying); Sun, JC (Sun Ji-chao); Jing, JH (Jing Ji-hong); Liu, JT (Liu Jing-tao); Wang, Y (Wang Ying)
刊名	JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY
	2012
卷号	19 期号:1 页码:213-221
关键词	adsorption Pb2+ soil pH humic acid
ISSN号	1005-9784
英文摘要	Pb2+ adsorption onto a soil by irrigation of sewage in the Pearl River Delta of South China was examined as a function of the reaction time, solution pH, initial lead concentration, organic matter (humic acid) and competitive ions (Cu2+). The adsorption of Pb2+ onto the soil was investigated on batch equilibrium adsorption experiments. Results show that the Pb2+ adsorption on the soil is relatively rapid in the first 30 min and reaches equilibrium at 2 h, and the kinetics of the adsorption process on the soil is well characterized by the pseudo-second order reaction rate. Langmuir, Freundlich and Temkin isothermal models are fit for the adsorption of Pb2+ onto the soil, and the maximum amount of Pb2+ adsorption (Q(m)) is 7.47 mg/g. The amount of Pb2+ adsorption increases with increasing the pH at the range of 1.2-4.5 and reaches a plateau at the range of 4.5-12. The presence of humic acid in soil decreases the adsorption of Pb2+ onto the soil at solution pH of 8 since the negatively charged humic acid with Pb2+ is difficult to be adsorbed on the negatively charged soil surface. The adsorption of Pb2+ onto the soil also decreases in the presence of Cu2+ due to the competition adsorption between Pb2+ and Cu2+.
学科主题	环境地质学
WOS关键词	HEAVY-METALS ; IONIC-STRENGTH ; AQUEOUS-SOLUTION ; HUMIC-ACID ; COMPETITIVE SORPTION ; ORGANIC-MATTER ; LEAD SORPTION ; IRON-OXIDE ; PH ; PB(II)
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL OF CENTRAL SOUTH UNIV TECHNOLOGY
WOS记录号	WOS:000299930000031
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39514]
专题	中国地质调查局
作者单位	1.[Huang Guan-xing 2.Zhang Ying 3.Sun Ji-chao 4.Jing Ji-hong 5.Liu Jing-tao 6.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Peoples R China 7.中国地质科学院水文地质环境地质研究所
推荐引用方式 GB/T 7714	Huang, GX ,Zhang, Y ,Sun, JC ,et al. Effects of different conditions on Pb2+ adsorption from soil by irrigation of sewage in South China[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY,2012,19(1):213-221.
APA	Huang, GX ,Zhang, Y ,Sun, JC ,Jing, JH ,Liu, JT ,&Wang, Y .(2012).Effects of different conditions on Pb2+ adsorption from soil by irrigation of sewage in South China.JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY,19(1),213-221.
MLA	Huang, GX ,et al."Effects of different conditions on Pb2+ adsorption from soil by irrigation of sewage in South China".JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY 19.1(2012):213-221.