Determination of the Biosorption of Cd(Ⅱ) by Coconut Fiber

Made available in DSpace on 2015-05-04T17:07:34Z (GMT). No. of bitstreams: 2 license.txt: 1914 bytes, checksum: 7d48279ffeed55da8dfe2f8e81f3b81f (MD5) mirian_pereiraetal_IOC_2014.pdf: 279050 bytes, checksum: 56b80540ed54c2c0f81bacc18831da2f (MD5) Previous issue date: 2014Universidade Federal do Rio Grande do Norte. Centro Tecnológico. Engenharia Mecânica. Natal. RN, Brasil / University of Coimbra. Centre of Chemical Processes Engineering and Forest Products (CIEPQPF), Coimbra, Portugal / Universidade Federal do Rio Grande do Norte. Faculdade de Ciências da Saúde do Traíri. Santa Cruz, RN, Brasil.Universidade Federal do Rio Grande do Norte. Centro Tecnológico. Engenharia Mecânica. Natal. RN, Brasil .Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Ultraestrutura Celular. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Ultraestrutura Celular. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Ultraestrutura Celular. Rio de Janeiro, RJ, Brasil.Universidade Federal do Rio Grande do Norte. Departamento de Análises Clínicas. Natal, RN, Brasil.Universidade Federal do Rio Grande do Norte. Departamento de Engenharia Têxtil. Natal, RN, Brasil.University of Coimbra. Centre of Chemical Processes Engineering and Forest Products (CIEPQPF). Coimbra, Portugal.University of Coimbra. Centre of Chemical Processes Engineering and Forest Products (CIEPQPF). Coimbra, Portugal.Universidade Federal do Rio Grande do Norte. Centro Tecnológico. Engenharia Mecânica. Natal. RN, Brasil / Fundação Oswaldo Cruz. Laboratório de Ultraestrutura Celular. Rio de Janeiro, RJ, Brasil.The coconut fiber is produced in large quantities in Brazil, even though very small quantities are being used by some industries, mainly cordage mats and handicrafts. An alternative usage would be the use of these fibers in biosorption of heavy metals from aqueous solutions. This present study aimed to evaluate the potentiality of cadmium biosorption by coconut fiber. The coconut fibers were used at kinetic analysis, influence of pH and adsorption isotherms were also carried out. It can be concluded that there is great potential for the use of coconut fiber, and the optimum pH for adsorption was around 5.0. The adsorption kinetics is fast and equilibrium occurs within 120 min. The Langmuir isotherm was considered the most suitable to describe the experimental data