| Title | Agro-waste-based functionalized and economic adsorbents for the effective treatment of toxic contaminants from tannery effluent |
|---|---|
| ID_Doc | 17269 |
| Authors | Kabir, MM; Nahar, N; Akter, MM; Alam, F; Gilroyed, BH; Misu, MM; Didar-ul-Alam, M; Hakim, M; Tijing, L; Shon, HK |
| Title | Agro-waste-based functionalized and economic adsorbents for the effective treatment of toxic contaminants from tannery effluent |
| Year | 2023 |
| Published | |
| Abstract | The present investigation explored two novel adsorbents, i.e., hydroxyapatite (HAP) and moringa-modified activated carbon (MMAC) from eggshell and moringa (Moringa oleifera) seeds, respectively, for the treatment of tannery effluents (TE). Particular emphasis was given to Cr(VI) adsorption when varying equilibration time, effluent pH, initial concentration of Cr(VI) and temperature. The adsorbents' characteristics suggested significant Cr(VI) accumulation onto the adsorbent's surface, whereas adsorption modelling recommended pseudo-second -order (PSO) and Langmuir models fitted well with the experimental data based on the regression coefficient (R2) values with minimum errors. The surface complexation model (SCM) indicated that speciation of Cr(VI) sorbed complexes formed an inner-sphere compound dominated by acidic pH, validated by pHpzc. The maximum adsorption capacities (qmax) of Cr(VI) were accounted to be 295 and 280 mg/g for HAP and MMAC, corre-spondingly. Interestingly, both adsorbents effectively removed other metallic ions; Fe, Pd, Cu and Zn removal was 85 %, while Cd, Ni, and Mn removal was 70 %. The Cr(VI) adsorption processes followed chemisorption mechanisms dominated by the surface complexation phenomenon. The performance of a 100 L packed-bed reactor was evaluated, and the breakthrough time of Cr(VI) adsorption for both adsorbents was 15 min. The adsorbents had splendid regeneration capacities and could be re-used numerous times. In essence, the present study concludes that both adsorbents are highly effective at removing Cr(VI) and other contaminants. The ad-sorbents are innovative and economical and can be one of the breakthrough feasible options for treating toxic contaminants in a large-scale TE. |
Similar Articles
| ID | Score | Article |
|---|---|---|
14343
|
Ghanim, B; Leahy, JJ; O'Dwyer, TF; Kwapinski, W; Pembroke, JT; Murnane, JG Removal of hexavalent chromium (Cr(VI)) from aqueous solution using acid-modified poultry litter-derived hydrochar: adsorption, regeneration and reuse(2022)Journal Of Chemical Technology And Biotechnology, 97, 1 | |
| 22259
|
Muedi, KL; Masindi, V; Maree, JP; Brink, HG Rapid Removal of Cr(VI) from Aqueous Solution Using Polycationic/Di-Metallic Adsorbent Synthesized Using Fe3+/Al3+ Recovered from Real Acid Mine Drainage(2022)Minerals, 12.0, 10 | |
| 64845
|
Bakalár, T Effect of pH on adsorption of Cr(VI), K(I) and NH4(I) ions onto natural zeolites and bentonites(2021) | |
| 27501
|
Nunes, MABS; Fuentes, DP; Mesquita, JAFS; Romano, RCO; Pileggi, RG; Oliveira, PV; Petri, DFS Feasibility of sugarcane bagasse/polydopamine as sustainable adsorbents for Cr(VI) with reusability in cement composition(2023) | |
| 23951
|
Vilardi, G; Ochando-Pulido, JM; Verdone, N; Stoller, M; Di Palma, L On the removal of hexavalent chromium by olive stones coated by iron-based nanoparticles: Equilibrium study and chromium recovery(2018) | |
| 6133
|
Parameswari, E; Kalaiarasi, R; Davamani, V; Kalaiselvi, P; Paulsebastian, S; Ilakiya, T Potentials of surface modified biochar for removal of Cr from tannery effluent and its regeneration to ensure circular economy(2024)Bioremediation Journal, 28, 2 | |
| 26456
|
Kaprara, E; Daskalopoulou, E; Simeonidis, K; Mitrakas, M An Integrated Approach for the Recovery of Sn from Used Water Adsorbents(2023)Water, 15, 1 | |
| 14608
|
Ajala, EO; Aliyu, MO; Ajala, MA; Mamba, G; Ndana, AM; Olatunde, TS Adsorption of lead and chromium ions from electroplating wastewater using plantain stalk modified by amorphous alumina developed from waste cans(2024)Scientific Reports, 14, 1 | |
| 24618
|
Vaishna, VR; Sam, J; Nair, RR; Akhina, MK; Haritha, K; Prathish, KP Sustainable utilization of nutmeg fruit rind waste for Cr(VI) removal and resource recovery from industrial wastewater: An integrated approach(2023)Journal Of Environmental Chemical Engineering, 11, 6 | |
| 21660
|
Campisi, S; Leone, M; Papacchini, M; Evangelisti, C; Polito, L; Postole, G; Gervasini, A Multifunctional interfaces for multiple uses: Tin(II)-hydroxyapatite for reductive adsorption of Cr(VI) and its upcycling into catalyst for air protection reactions(2023) |