| Title | Cadmium and lead adsorption and desorption by coffee waste-derived biochars |
|---|---|
| ID_Doc | 13058 |
| Authors | Carnier, R; Coscione, AR; de Abreu, CA; Melo, LCA; da Silva, AF |
| Title | Cadmium and lead adsorption and desorption by coffee waste-derived biochars |
| Year | 2022 |
| Published | |
| Abstract | Biochar derived from coffee waste has been reported as a promising material for heavy metal sorption. However, if the intended use is environmental remediation, knowing the extent to which desorption may occur is critical. Thus, the objective of this work was to evaluate the efficiency of spent coffee ground (SCG) and coffee parchment (CP) biochars pyrolyzed at 700 degrees C under laboratory conditions, in the sorption of Cd and Pb from aqueous solutions, in a pH range from 2 to 10, and their retention after an induced desorption process with a 2.9 pH acetic acid solution. Both biochars were alkaline, and the initial pH of the solution had a large effect on the sorption capacity of SCG but a small effect on the sorption capacity of CP. The Pb sorption capacity was higher for CP (18.6 mg center dot g(-1)) than for SCG (11.4 mg center dot g(-1)), while both biochars had low Cd retention capacities (1.18 mg center dot g(-1)). Coffee parchment also showed the highest Pb retention (30% to 87%), while for Cd there was no difference between CP and SCG biochars. Our results showed that metal precipitation was the main mechanism for metal immobilization and CP biochar proved to be more reliable than SCG, mainly for Pb, due to its higher sorption capacity and lower metal release by desorption than SCG. These characteristics are particularly important for the use of biochar in environmental remediation. Besides that, the biochar production represents an eco-friendly destination for these feedstocks, contributing to the circular economy. |
| https://www.scielo.br/j/brag/a/Xh7Bv8bhvC54tXTL8rMNXWN/?lang=en&format=pdf |
Similar Articles
| ID | Score | Article |
|---|---|---|
15170
|
Carnier, R; Coscione, AR; Delaqua, D; Puga, AP; de Abreu, CA Jack Bean Development in Multimetal Contaminated Soil Amended with Coffee Waste-Derived Biochars(2022)Processes, 10, 10 | |
| 14431
|
Stylianou, M; Christou, A; Dalias, P; Polycarpou, P; Michael, C; Agapiou, A; Papanastasiou, P; Fatta-Kassinos, D Physicochemical and structural characterization of biochar derived from the pyrolysis of biosolids, cattle manure and spent coffee grounds(2020)Journal Of The Energy Institute, 93, 5 | |
| 28731
|
Zhang, X; Su, PJ; Wang, WC; Yang, WC; Ge, YY; Jiang, KL; Huang, JW Optimized carbonization of coffee shell via response surface methodology: A circular economy approach for environmental remediation(2024) | |
| 12430
|
Correa-Navarro, YM; Moreno-Piraján, JC; Giraldo, L Processing of fique bagasse waste into modified biochars for adsorption of caffeine and sodium diclofenac(2022)Brazilian Journal Of Chemical Engineering, 39.0, 4 | |
| 13435
|
Fdez-Sanromán, A; Pazos, M; Rosales, E; Sanromán, MA Unravelling the Environmental Application of Biochar as Low-Cost Biosorbent: A Review(2020)Applied Sciences-Basel, 10, 21 | |
| 13056
|
Lee, KT; Tsai, JY; Hoang, AT; Chen, WH; Gunarathne, DS; Tran, KQ; Selvarajoo, A; Goodarzi, V Energy-saving drying strategy of spent coffee grounds for co-firing fuel by adding biochar for carbon sequestration to approach net zero(2022) | |
| 10233
|
Li, CH; Huang, Q; Zhang, HX; Wang, QQ; Xue, RX; Guo, GM; Hu, J; Li, TH; Wang, JF; Hu, S Characterization of Biochars Produced by Co-Pyrolysis of Hami Melon (Cantaloupes) Straw Mixed with Polypropylene and Their Adsorption Properties of Cadmium(2021)International Journal Of Environmental Research And Public Health, 18, 21 | |
| 13429
|
Chen, WH; Du, JT; Lee, KT; Ong, HC; Park, YK; Huang, CC Pore volume upgrade of biochar from spent coffee grounds by sodium bicarbonate during torrefaction(2021) | |
| 15063
|
Bousdra, T; Papadimou, SG; Golia, EE The Use of biochar in the Remediation of Pb, Cd, and Cu-Contaminated Soils. The Impact of biochar Feedstock and Preparation Conditions on Its Remediation Capacity(2023)Land, 12, 2 | |
| 9150
|
del Pozo, C; Rego, F; Yang, Y; Puy, N; Bartrolí, J; Fàbregas, E; Bridgwater, AV Converting coffee silverskin to value-added products by a slow pyrolysis-based biorefinery process(2021) |