Soil Research Soil Research Society
Soil, land care and environmental research
RESEARCH ARTICLE

Use of bentonite to control the release of copper from contaminated soils

Wanting Ling A B , Qing Shen C , Yanzheng Gao A D , Xiaohong Gu A and Zhipeng Yang A
+ Author Affiliations
- Author Affiliations

A College of Resource and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.

B Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Natural Resources and Environmental Science, Zhejiang University, 310029 Hangzhou, China.

C Department of Food Sciences, the University of Reading, Whiteknights, Reading, RG6 6DW, UK.

D Corresponding author. Email: gaoyanzheng@njau.edu.cn

Australian Journal of Soil Research 45(8) 618-623 https://doi.org/10.1071/SR07079
Submitted: 6 June 2007  Accepted: 22 October 2007   Published: 7 December 2007

Abstract

A decrease in release and availability of heavy metals in soil has been of worldwide interest in recent years. Bentonite is a type of expandable montmorillonite clay, and has strong sorption for heavy metals. In this work, the control of amended bentonite on the release of copper (Cu2+) from spiked soils was investigated using a batch equilibrium technique. Sorption of Cu by bentonite was pH-dependent, and could be well described using the Langmiur model. Maximum sorption capacity of the bentonite used in this study was 5.4 mg/g, which was much greater than soils reported in the literature. The extent of Cu2+ release from spiked soils was correlated with slurry concentrations, pH, and soil ageing process. In all cases, the amendment of bentonite was observed to effectively decrease the release of Cu2+ from soils. The apparent aqueous concentrations of Cu2+ released from soils devoid of bentonite treatment were 113–1160% higher than those from the soils amended with bentonite. Moreover, the magnitude of Cu2+ release decreased with increasing amount of bentonite added to soils. The bentonite added was more effective in retaining Cu2+ in sorbents for aged contaminated soils. Such enhanced retention resulting from the presence of bentonite was observed within a wide pH range from 2.5 to 7.0. Bentonite, as one of the most abundant minerals in soils, is regarded to improve the soil overall quality. The results obtained from this work provide useful information on utilisation of bentonite to control the release of heavy metals from contaminated soils.

Additional keywords: heavy metals, soil, bentonite, clay, sorption, desorption, availability, remediation.


Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (20777036, 40701073), the National Natural Science Foundation of Jiangsu Province (BK2007580, BK2006518), the Program for New Century Excellent Talents in University (NCET T-06-0491), and the Foundation of Ministry of Education Key Laboratory of Environment Remediation and Ecological Health (050302).


References


Abollino O, Aceto M, Malandrino M, Sarzanini C, Mentasti E (2003) Adsorption of heavy metals on Na-montmorillonite: effect of pH and organic substances. Water Research 37, 1619–1627.
CrossRef | PubMed |

Al-Qunaibit MH, Mekhemer WK, Zaghloul AA (2005) The adsorption of Cu(II) ions on bentonite—a kinetic study. Journal of Colloid and Interface Science 283, 316–321.
CrossRef | PubMed |

Andini S, Cioffi R, Montagnaro F, Pisciotta F, Santoro L (2006) Simultaneous adsorption of chlorophenol and heavy metal ions on organophilic bentonite. Applied Clay Science 31, 126–133.
CrossRef |

Boonfueng T, Axe L, Xu Y, Tyson TA (2006) Nickel and lead sequestration in manganese oxide-coated montmorillonite. Journal of Colloid and Interface Science 303, 87–98.
CrossRef | PubMed |

Bordas F, Bourg A (2001) Effect of solid/liquid ratio on the remobilization of Cu, Pb, Cd and Zn from polluted river sediment. Water, Air, and Soil Pollution 128, 391–400.
CrossRef |

Donat R, Akdogan A, Erdem E, Cetisli H (2005) Thermodynamics of Pb2+ and Ni2+ adsorption onto natural bentonite from aqueous solutions. Journal of Colloid and Interface Science 286, 43–52.
CrossRef | PubMed |

Gao YZ, He JZ, Ling WT, Hu HQ, Liu F (2003) Effects of organic acids on copper and cadmium desorption from contaminated soils. Environment International 29, 613–618.
CrossRef | PubMed |

Gao YZ, Xiong W, Ling WT, Xu JM (2006) Sorption of phenanthrene by contaminated soils with heavy metals. Chemosphere 65, 1355–1361.
CrossRef | PubMed |

García-Sánchez A, Alastuey A, Querol X (1999) Heavy metal adsorption by different minerals: application to the remediation of polluted soils. The Science of the Total Environment 242, 179–188.
CrossRef |

Hu H, Liu H, He J (2005) Effects of organic acids on sorption of Cu by soils with permanent and variable charges. Acta Pedologica Sinica 42, 232–237.

Jang A, Choi YS, Kim In S (1998) Batch and column tests for the development of an immobilization technology for toxic heavy metals in contaminated soils of closed mines. Water Science and Technology 37, 81–88.
CrossRef |

Kaya A, Ören AH (2005) Adsorption of zinc from aqueous solutions to bentonite. Journal of Hazardous Materials 125, 183–189.
CrossRef | PubMed |

Khan AG, Kuek C, Chaudhry TM, Khoo CS, Hayes WJ (2000) Role of plants, mycorrhizae and phytochelators in heavy metal contaminated land remediation. Chemosphere 41, 197–207.
CrossRef | PubMed |

Khan SA, Riaz-ur-Rehman , Khan MA (1995) Adsorption of chromium (III), chromium (VI) and silver (I) on bentonite. Waste Management 15, 271–282.
CrossRef |

Lacin O, Bayrak B, Korkut O, Sayan E (2005) Modeling of adsorption and ultrasonic desorption of cadmium(II) and zinc(II) on local bentonite. Journal of Colloid and Interface Science 292, 330–335.
CrossRef | PubMed |

Li X, Ling W, He J (2002) Interaction between charge characteristics and Cu2+ adsorption–desorption of soils with variable or permanent charge. Pedosphere 12, 321–328.

Ling WT, Xu JM, Gao YZ (2005) Effects of DOM from sewage sludge on atrazine sorption by soils. Science in China 48, 157–166.

Liu Y, Shen X, Xian Q, Chen H, Zou H, Gao S (2006) Adsorption of copper and lead in aqueous solution onto bentonite modified by 4′-methylbenzo-15-crown-5. Journal of Hazardous Materials 137, 1149–1155.
CrossRef | PubMed |

Mellah A, Chegrouche S (1997) The removal of zinc from aqueous solutions by natural bentonite. Water Research 31, 621–629.
CrossRef |

Mustafa G, Kookana RS, Singh B (2006) Desorption of cadmium from goethite: effects of pH, temperature and aging. Chemosphere 64, 856–865.
CrossRef | PubMed |

Naseem R, Tahir SS (2001) Removal of Pb(II) from aqueous/acidic solutions by using bentonite as an adsorbent. Water Research 35, 3982–3986.
CrossRef | PubMed |

Oyanedel-Craver VA, Smith JA (2006) Effect of quaternary ammonium cation loading and pH on heavy metal sorption to Ca bentonite and two organobentonites. Journal of Hazardous Materials 137, 1102–1114.
CrossRef | PubMed |

Phillips IR (1998) Use of Soil Amendments to reduce nitrogen, phosphorus and heavy metal availability. Journal of Soil Contamination 7, 191–212.
CrossRef |

Saison C, Perrin-Ganier C, Amellal S, Morel JL, Schiavon M (2004) Effect of metals on the adsorption and extractability of 14C-phenanthrene in soils. Chemosphere 55, 477–485.
CrossRef | PubMed |

Serrano S, Garrido F, Campbell CG, García-González MT (2005) Competitive sorption of cadmium and lead in acid soils of Central Spain. Geoderma 124, 91–104.
CrossRef |

Sheta AS, Falatah AM, Al-Sewailem MS, Khaled EM, Sallam ASH (2003) Sorption characteristics of zinc and iron by natural zeolite and bentonite. Microporous and Mesoporous Materials 61, 127–136.
CrossRef |

Yoon J, Cao X, Zhou Q, Ma LQ (2006) Accumulation of Pb, Cu, and Zn in native plants growing on a contaminated Florida site. The Science of the Total Environment 368, 456–464.
CrossRef | PubMed |

Zhu L, Chen B, Shen X (2000) Sorption of phenol, p-nitrophenol, and aniline to dual-cation organobentonites from water. Environmental Science & Technology 34, 468–475.
CrossRef |








Rent Article (via Deepdyve) Export Citation Cited By (21)