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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Agricultural solid waste for sorption of metal ions, part II: competitive assessment in multielemental solution and lake water

Texto completo
Autor(es):
Milani, Priscila Aparecida [1, 2] ; Consonni, Joao Luiz [3] ; Labuto, Georgia [4] ; Vasconcelos Martins Carrilho, Elma Neide [1, 2]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Fed Sao Carlos, Dept Ciencias Nat Matemat & Educ, BR-13600970 Araras, SP - Brazil
[2] Univ Fed Sao Carlos, Lab Mat Polimer & Biossorventes, BR-13600970 Araras, SP - Brazil
[3] Univ Fed Sao Carlos, Dept Recursos Nat & Protecao Ambiental, BR-13600970 Araras, SP - Brazil
[4] Univ Fed Sao Paulo, Dept Quim, BR-09913030 Diadema, SP - Brazil
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: Environmental Science and Pollution Research; v. 25, n. 36, SI, p. 35906-35914, DEC 2018.
Citações Web of Science: 4
Resumo

Sugarcane bagasse and hydroponic lettuce roots were used as biosorbents for the removal of Cu(II), Fe(II), Mn(II), and Zn(II) from multielemental solutions and lake water, in batch processes. These biomasses were studied in natura (lettuce roots, NLR, and sugarcane bagasse, NSB) and chemically modified with HNO3 (lettuce roots, MLR, and sugarcane bagasse, MSB). The results showed higher adsorption efficiency for MSB and either NLR or MLR. The maximum adsorption capacities (q(max)) in multielemental solution for Cu(II), Fe(II), Mn(II), and Zn(II) were 35.86, 31.42, 3.33, and 24.07mg/g for NLR; 25.36, 27.95, 14.06, and 6.43mg/g for MLR; 0.92, 3.94, 0.03, and 0.18mg/g for NSB; and 54.11, 6.52, 16.7, and 1.26mg/g for MSB, respectively. The kinetic studies with chemically modified biomasses indicated that sorption was achieved in the first 5min and reached equilibrium around 30min. Sorption of Cu(II), Fe(II), Mn(II), and Zn(II) in lake water by chemically modified biomasses was 24.31, 14.50, 8.03, and 8.21mg/g by MLR, and 13.15, 10.50, 6.10, and 5.14mg/g by MSB, respectively. These biosorbents are promising and low costs agricultural residues, and as for lettuce roots, these showed great potential even with no chemical modification. (AU)

Processo FAPESP: 16/06271-4 - Desenvolvimento de materiais adsorventes a partir de resíduo de biomassa de levedura proveniente de processos fermentativos industriais para remoção de contaminantes emergentes de águas e efluentes
Beneficiário:Geórgia Christina Labuto Araújo
Linha de fomento: Auxílio à Pesquisa - Regular