Adsorption characteristics of Cu and Ni on Irish peat moss

Journal of Environmental Management
B Sen GuptaT K Ghosh

Abstract

Peat has been widely used as a low cost adsorbent to remove a variety of materials including organic compounds and heavy metals from water. Various functional groups in lignin allow such compounds to bind on active sites of peat. The adsorption of Cu(2+) and Ni(2+) from aqueous solutions on Irish peat moss was studied both as a pure ion and from their binary mixtures under both equilibrium and dynamic conditions in the concentration range of 5-100mg/L. The pH of the solutions containing either Cu(2+) or Ni(2+) was varied over a range of 2-8. The adsorption of Cu(2+) and Ni(+2) on peat was found to be pH dependent. The adsorption data could be fitted to a two-site Langmuir adsorption isotherm and the maximum adsorption capacity of peat was determined to be 17.6 mg/g for Cu(2+) and 14.5mg/g for Ni(2+) at 298 K when the initial concentration for both Cu(2+) and Ni(2+) was 100mg/L, and the pH of the solution was 4.0 and 4.5, respectively. Column studies were conducted to generate breakthrough data for both pure component and binary mixtures of copper and nickel. Desorption experiments showed that 2mM EDTA solution could be used to remove all of the adsorbed copper and nickel from the bed.

References

Jul 11, 2002·Water Research·L Ringqvist, I Oborn
Jul 11, 2002·Water Research·L RingqvistI Oborn

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Citations

Jul 11, 2013·Environmental Technology·Luisa Antonia Sepulveda, Cesar Costapinto Santana
Apr 26, 2012·Journal of Environmental Management·Nikhil R ShindeSmita S Zinjarde
Jul 7, 2009·Journal of Hazardous Materials·A EwecharoenH Bertagnolli
Jun 19, 2009·Journal of Environmental Management·Francisco W SousaRonaldo F Nascimento
Oct 17, 2015·The Science of the Total Environment·Laura Souter, Shaun A Watmough
Jan 29, 2014·Bulletin of Environmental Contamination and Toxicology·Andrzej KłosMałgorzata Rajfur
Aug 27, 2013·Journal of Hazardous Materials·Muhammad BilalQaisar Mahmood
Aug 7, 2012·Bioresource Technology·M A HossainT Setiadi
Oct 22, 2014·Environmental Science and Pollution Research International·Ewa Stanislawska-GlubiakAnna Kocon
Apr 9, 2016·Environmental Science. Processes & Impacts·Jin Hee ParkJae Woo Chung
Jun 1, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Yae WangMartin Cannon
Jul 15, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·S LévesqueY Comeau
Jul 28, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Taimur KhanMohammed Saedi Jami
May 24, 2020·The Science of the Total Environment·Mir Amir Mohammad ReshadiGordon McKay
Jan 27, 2019·The Science of the Total Environment·Uzair Akbar KhanAnna-Kaisa Ronkanen

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