Removal of Pb2+ from aqueous solutions by rock phosphate (low-grade)

被引：38

作者：

Keles, Eda ^{[1
]}

Ozer, A. Kadir ^{[1
]}

Yoruk, Sedat ^{[1
]}

机构：

[1] Ataturk Univ, Dept Chem Engn, TR-25240 Erzurum, Turkey

来源：

DESALINATION | 2010年 / 253卷 / 1-3期

关键词：

Lead removal; Rock phosphate; Adsorption; Heavy metal; LEAD IMMOBILIZATION; ACTIVATED PHOSPHATE; ADSORPTION; ADSORBENT; SORPTION; APATITE; IONS;

D O I：

10.1016/j.desal.2009.11.021

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this study, removal of Pb2+ from aqueous solution by adsorption on rock phosphate (low-grade) has been investigated in batch experiments.(1) The Pb2+ adsorption capability of the rock phosphate was evaluated as a function of PH, adsorbent dosage, contact time, initial Pb2+ concentration and temperature Adsorption capacity of rock phosphate was found to be 200 mg Pb2+/g of adsorbent for initial Pb2+ concentration of 50 mg/L at 25 degrees C, while the adsorbent dosage was maintained at 0 25 g/L in pH 5 and contact time 120 min Adsorption data obtained at 25, 35, 45 and 55 degrees C showed that the adsorption process was well-fitted with the pseudo-first-order adsorption rate expression and Langmuir adsorption isotherm Activation energy obtained from kinetic data was found to be 33.6 kJ mol(-1). (C) 2009 Elsevier B V All rights reserved.

引用

页码：124 / 128

页数：5

共 17 条

[1] Impacts of phosphate amendments on lead biogeochemistry at a contaminated site [J].

Cao, XD ;

Ma, LQ ;

Chen, M ;

Singh, SP ;

Harris, WG .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2002, 36 (24) :5296-5304

[2]

Chen XB, 1997, ENVIRON SCI TECHNOL, V31, P624

[3] Heavy metal removal from aqueous solutions by activated phosphate rock [J].

Elouear, Z. ;

Bouzid, J. ;

Boujelben, N. ;

Feki, M. ;

Jamoussi, F. ;

Montiel, A. .

JOURNAL OF HAZARDOUS MATERIALS, 2008, 156 (1-3) :412-420

[4]

Goswami S, 2005, WATER SA, V31, P597

[5]

Kandah MI, 2002, CHEM ENG TECHNOL, V25, P921, DOI 10.1002/1521-4125(20020910)25:9<921::AID-CEAT921>3.0.CO

[6]

2-G

[7] Chromium(VI) adsorption from aqueous solution by Hevea Brasilinesis sawdust activated carbon [J].

Karthikeyan, T ;

Rajgopal, S ;

Miranda, LR .

JOURNAL OF HAZARDOUS MATERIALS, 2005, 124 (1-3) :192-199

[8] EFFECTS OF NO3-, CL-, F-, SO42-, AND CO32- ON PB2+ IMMOBILIZATION BY HYDROXYAPATITE [J].

MA, QY ;

LOGAN, TJ ;

TRAINA, SJ ;

RYAN, JA .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1994, 28 (03) :408-418

[9] LEAD IMMOBILIZATION FROM AQUEOUS-SOLUTIONS AND CONTAMINATED SOILS USING PHOSPHATE ROCKS [J].

MA, QY ;

LOGAN, TJ ;

TRAINA, SJ .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1995, 29 (04) :1118-1126

[10] IN-SITU LEAD IMMOBILIZATION BY APATITE [J].

MA, QY ;

TRAINA, SJ ;

LOGAN, TJ ;

RYAN, JA .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1993, 27 (09) :1803-1810

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