| Title | Enhanced adsorption of aqueous Pb(II) by modified biochar produced through pyrolysis of watermelon seeds |
|---|---|
| ID_Doc | 13863 |
| Authors | Ahmed, W; Mehmood, S; Núñez-Delgado, A; Ali, S; Qaswar, M; Shakoor, A; Mahmood, M; Chen, DY |
| Title | Enhanced adsorption of aqueous Pb(II) by modified biochar produced through pyrolysis of watermelon seeds |
| Year | 2021 |
| Published | |
| Abstract | A biochar (BC) was obtained by the pyrolysis of watermelon seeds (WM) in nitrogen environment. In addition, a modified biochar (HP-BC) was obtained by means of H2O2 treatment of BC. Later on, both kinds of biochar (BC and HP-BC) were characterized and compared as regards their potential for Pb(II) adsorption from wastewater. Characterization was performed by using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), energy dispersive spectroscopy (EDS), Zeta potential analysis, elemental mapping, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Pb(II) adsorption characteristics for HP-BC and BC as were evaluated as a function of solution pH, contact time and Pb(II) equilibrium concentration, using kinetic and thermodynamic studies, as well as adsorption isotherms. Regarding kinetics, the pseudo-second order model showed good fitting to experimental data. Based on the Langmuir model, the maximum Pb(II) adsorption capacities were calculated as 44.32 mg g(-1) and 60.87 mg g(-1) for BC and HP-BC, respectively. Thermodynamic study indicated that Pb(II) adsorption onto BC and HP-BC was spontaneous and primarily governed by chemisorption and surface complexation. In view of the results, the H2O2 modification of the watermelon seeds biochar can be considered as a promising and cost effective approach as regards Pb(II) removal from water/wastewater, which would not cause adverse impacts on the surrounding environments. Overall, it can be seen as a procedure promoting the effective recycling of a waste/by-product, in line of the precepts of the circular economy, aiding to protect human and environmental health. (C) 2021 Elsevier B.V. All rights reserved. |
Similar Articles
| ID | Score | Article |
|---|---|---|
24928
|
Wang, Q; Wang, YL; Tang, JJ; Yang, Z; Zhang, L; Huang, XW New insights into the interactions between Pb(II) and fruit waste biosorbent(2022) | |
| 13773
|
Nardis, BO; Franca, JR; Carneiro, JSD; Soares, JR; Guilherme, LRG; Silva, CA; Melo, LCA Production of engineered-biochar under different pyrolysis conditions for phosphorus removal from aqueous solution(2022) | |
| 23606
|
Baldovi, AA; Ayvazian, AP; Coelho, LHG; de Jesus, TA Biosorption of Pb(II) by Unmodified Banana Peel in Batch and Column Experiments: a Potential Green and Low-Cost Technology for Industrial Effluent Treatment(2022)Water Air And Soil Pollution, 233, 12 | |
| 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 | |
| 20225
|
Marcinczyk, M; Ok, YS; Oleszczuk, P From waste to fertilizer: Nutrient recovery from wastewater by pristine and engineered biochars(2022) | |
| 21431
|
Sudan, S; Kaushal, J; Khajuria, A; Goyal, H; Mantri, A Bentonite clay-modified coconut biochar for effective removal of fluoride: kinetic, isotherm studies(2024)Adsorption-Journal Of The International Adsorption Society, 30.0, 3-4 | |
| 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 | |
| 24478
|
Biswal, BK; Balasubramanian, R Use of biochar as a low-cost adsorbent for removal of heavy metals from water and wastewater: A review(2023)Journal Of Environmental Chemical Engineering, 11, 5 | |
| 28814
|
Pap, S; Boyd, KG; Taggart, MA; Sekulic, MT Circular economy based landfill leachate treatment with sulphur-doped microporous biochar(2021) | |
| 29744
|
Zhang, RC; Zhang, YZ; Goei, R; Oh, WD; Zhang, Z; He, C Sustainable utilization of Sedum plumbizincicola as superior hydrochar for efficient nutrients recovery(2023) |