|
1
|
Pessôa NT, Sales DCS, Do Nascimento GE, Dos Santos JHL, Silva MNDS, Napoleão DC, Rodríguez-Díaz JM, Duarte MMMB. Effective adsorption of cadmium and nickel ions in mono and bicomponent systems using eco-friendly adsorbents prepared from peanut shells. ENVIRONMENTAL RESEARCH 2024; 247:118220. [PMID: 38242422 DOI: 10.1016/j.envres.2024.118220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 01/09/2024] [Accepted: 01/14/2024] [Indexed: 01/21/2024]
Abstract
The work investigates the potential of peanut shells, an abundant agro-industrial waste, to serve as an adsorbent precursor for the effective and simple treatment of effluents loaded with cadmium and nickel ions. Among the adsorbents prepared, carbonized peanut shell (CCarb), due to its higher adsorption capacity, proved to be the most effective compared to carbonized and activated peanut shell (CATQ). The carbonization process led to structural changes, which resulted in an increase in surface area (around 6 times more in CATQ) and pore volume (around 3 times more in CATQ). Even so, the amount of H+ acid sites due to acid activation produced unfavorable effects for adsorption. Hydroxyl, carboxyl and carbonyl groups were identified on the adsorbent surface which presented favorable charges for metal adsorption. This improvement propels the carbonized variant to the forefront, demonstrating the highest adsorption capacity and reaching equilibrium in less than 90 and 60 min for cadmium and nickel ions, respectively. In both monocomponent and bicomponent systems concentrations greater than 40 ppm signify an increase in adsorption capacity for Ni2+. The experimental data best fit the Freundlich model, showing maximum adsorption capacities of 17.04 mg g-1 for cadmium and 31.28 mg g-1 for nickel. Despite the antagonistic effect observed in the bicomponent system, this study concludes by underlining the promise of activated carbon from peanut shells to harmonize technical and environmental concerns.
Collapse
Affiliation(s)
- Natália Trindade Pessôa
- Departamento de Engenharia Química, Universidade Federal de Pernambuco, Av. Prof. Arthur de Sá, S/n, 50740-521, Recife, PE, Brazil
| | - Deivson Cesar Silva Sales
- Escola Politécnica de Pernambuco, Universidade de Pernambuco, Rua Benfica, 455, Madalena, 50720-001, Recife, PE, Brazil
| | - Graziele Elisandra Do Nascimento
- Departamento de Engenharia Química, Universidade Federal de Pernambuco, Av. Prof. Arthur de Sá, S/n, 50740-521, Recife, PE, Brazil
| | - Jean Heliton Lopes Dos Santos
- Departamento de Engenharia Química, Universidade Federal de Pernambuco, Av. Prof. Arthur de Sá, S/n, 50740-521, Recife, PE, Brazil
| | - Marina Nunes Dos Santos Silva
- Departamento de Engenharia Química, Universidade Federal de Pernambuco, Av. Prof. Arthur de Sá, S/n, 50740-521, Recife, PE, Brazil
| | - Daniella Carla Napoleão
- Departamento de Engenharia Química, Universidade Federal de Pernambuco, Av. Prof. Arthur de Sá, S/n, 50740-521, Recife, PE, Brazil
| | - Joan Mamnuel Rodríguez-Díaz
- Departamento de Procesos Químicos, Facultad de Ciencias Matemáticas, Físicas y Químicas, Universidad Técnica de Manabí, S/N, Avenida Urbina y Che Guevara, Portoviejo, 130104, Ecuador; Laboratorio de Análisis Químicos y Biotecnológicos, Instituto de Investigación, Universidad Técnica de Manabí, S/N, Avenida Urbina y Che Guevara, Portoviejo, 130104, Ecuador.
| | | |
Collapse
|
|
2
|
Sarathchandra SS, Rengel Z, Solaiman ZM. A Review on Remediation of Iron Ore Mine Tailings via Organic Amendments Coupled with Phytoremediation. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091871. [PMID: 37176929 PMCID: PMC10181287 DOI: 10.3390/plants12091871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/08/2023] [Accepted: 04/28/2023] [Indexed: 05/15/2023]
Abstract
Mining operations degrade natural ecosystems by generating a large quantity of mine tailings. Mine tailings remain in dams/open ponds without further treatment after valuable metals such as iron ore have been extracted. Therefore, rehabilitation of tailings to mitigate the negative environmental impacts is of the utmost necessity. This review compares existing physical, chemical and amendment-assisted phytoremediation methods in the rehabilitation of mine tailings from the perspective of cost, reliability and durability. After review and discussion, it is concluded that amendment-assisted phytoremediation has received comparatively great attention; however, the selection of an appropriate phytoremediator is the critical step in the process. Moreover, the efficiency of phytoremediation is solely dependent on the amendment type and rate. Further, the application of advanced plant improvement technologies, such as genetically engineered plants produced for this purpose, would be an alternative solution. Further research is needed to determine the suitability of this method for the particular environment.
Collapse
Affiliation(s)
- Sajeevee S Sarathchandra
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6009, Australia
| | - Zed Rengel
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6009, Australia
| | - Zakaria M Solaiman
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6009, Australia
| |
Collapse
|