Adsorption and Release of Cu(II), Co(II), Ni(II) and Mn(II) on Tropical Peatlands for Agricultural Applications

Authors:
Camila Almeida Melo, Lílian Karla de Oliveira, Leonardo Fernandes Fraceto, André Henrique Rosa

Book:
Proceedings of the 14th International Peat Congress

Venue:
Stockholm

Keywords:
adsorption, agricultural, micronutrients, peat, release

Documentfile:
Melo et al 2012: Adsorption and Release of Cu(II), Co(II), Ni(II) and Mn(II) on Tropical Peatlands for Agricultural Applications

Summary:

Theme IX. Tropical peatlands

SUMMARY

Peat is used as adsorbents of metal species and organic fertilizers. The union of these applications makes the use of peat a possible alternative to improve agricultural productivity. This work aimed to evaluate the adsorption capacity of the micronutrients Cu(II), Co(II), Ni(II) and Mn(II) ions in tropical peatlands, and to evaluate the release of previously adsorbed micronutrients. The adsorption results showed the following order of affinity: Cu(II)>Ni(II)>Co(II)>Mn(II), where about 99, 80, 71 and 70% adsorbed micronutrients by the peat samples, respectively. Release experiments showed that the order of release was: Mn(II)>Co(II)>Ni(II)>Cu(II), where about 16, 14, 10 and 1% released micronutrients by peat sample, respectively.