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H. J. Choi, Biosorption of heavy metals from acid mine drainage by modified sericite and microalgae hybrid system, Water Air Soil Pollut., 226(6), 1-8 (2015).
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C. H. Wu, C. Y. Kuo, and S. S. Guan, Adsorption kinetics of lead and zinc ions by coffee residues, Pol. J. Environ. Stud., 24, 761-767 (2015).
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M. Ghasemi, M. Naushad, N. Ghasemi, and Y. Khosravi-fard, Adsorption of Pb(II) from aqueous solution using new adsorbents prepared from agricultural waste: Adsorption isotherm and kinetic studies, J. Ind. Eng. Chem., 20(4), 2193-2199 (2014).
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4 |
J. Anwar, U. Shafique, W. Zaman, M. Salman, A. Dar, and A. Shafique, Removal of Pb(II) and Cd(II) from water by adsorption on peels of banana, Bioresour. Technol., 101, 1752-1755 (2010).
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5 |
A. A. Alghamdi, An investigation on the use of date palm fibers and coir pith as adsorbents for Pb(II) iones from its aqueous solution, Desalination Water Treat., 57(25), 12216-12226 (2015).
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S. Gupta, D. Kumar, and J. P. Gaur, Kinetic and isotherm modeling of Pb(II) sorption onto some waste plant materials, Chem. Eng. J., 148, 226-233 (2009).
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H. D. Utomo, Lead adsorption onto various solid surfaces, Nat. Resour., 6, 152 (2015).
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R. Lafi, A. B. Fradj, A. Hafiane, and B. H. Hameed, Coffee waste as potential adsorbent for the removal of basic dyes from aqueous solution, Korean J. Chem. Eng., 31, 2198-2206 (2014).
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9 |
F. J. Cerino-Cordova, P. E. Diaz-Flores, R. B. Garcia-Reyes, E. Soto-Regalado, R. Gomez-Gonzalez, M. T. Garza-Gonzalez, and E. Bustamante-Alcantara, Biosorption of Cu(II) and Pb(II) from aqueous solutions by chemically modified spent coffee grains, Int. J. Environ. Sci. Technol., 10, 611-622 (2013).
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10 |
H. G. Alemayehu, A. K. Burkute, and A. G. Ede, Adsorptive removal of Pb(II) and Cr(VI) from wastewater using acid untreated coffee husk, Interlink Cont. J. Environ. Sci. Toxicol., 1, 9-16 (2014).
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S. Berhe, D. Ayele, A. Tadesse, and A. Mulu, Adsorption efficiency of coffee husk for removal of lead(II) from industrial effluents: equilibrium and kinetic study, Int. J. Sci. Res. Publ., 5, 1-8 (2015).
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12 |
F. R. Oliveira, A. K. Patel, D. P. Jaisi, S. Adhikari, H. Lu, and S. K. Khanal, Environmental application of biochar: Current status and perspectives, Bioresour. Technol., 246, 110-122 (2017).
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13 |
R. Gomez-Gonzalez, F. J. Cerino-Cordova, A. M. Garcia-Leon, E. Soto-Regalado, N. E. Davila-Guzman, and J. J. Salazar-Rabago, Lead biosorption onto coffee grounds: Comparative analysis of several optimization techniques using equilibrium adsorption models and ANN, J. Taiwan Inst. Chem. Eng., 68, 201-210 (2016).
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14 |
C. Jeon, Adsorption and recovery of immobilized coffee ground beads for silver ions from industrial wastewater, J. Ind. Eng. Chem., 53, 261-267 (2017).
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H. J. Choi, Behavior of Pb(II) and Cd(II) Removal from aqueous solution by adsorption onto methyl-esterified sericite, KSWST J. Water Treat., 24(4), 87-100 (2016).
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H. J. Choi and K. H. Kim, Parametric study a dyeing wastewater treatment by modified sericite, Environm. Technol., 37(20), 2572-2579 (2016).
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I. Anastopoulos, M. Karamesouti, A. C. Mitropoulos, and G. Z. Kyzas, A review for coffee adsorbents, J. Mol. Liq., 229, 555-565 (2017).
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18 |
F. Fu and Q. Wang, Removal of heavy metal ions from wastewaters: A review, J. Environ. Manag., 92(3), 407-418 (2011).
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19 |
S. W. Yu and H. J. Choi, Use of hybrid bead, tannin and chitosan, for treatment of Pb(II) from aqueous solution, KSWST J. Water Treat., 26(2), 53-64 (2018).
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20 |
H. J. Choi, S. W. Yu, and K. H. Kim, Efficient use of Mg-modified zeolite in the treatment of aqueous solution contaminated with heavy metal toxic ions, J. Taiwan Inst. Chem. Eng., 63, 482-489 (2016).
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21 |
G. Z. Kyzas, Commercial coffee wastes as materials for adsorption of heavy metals from aqueous solutions, Materials, 5, 1826-1840 (2012).
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22 |
H. J. Choi and S. M. Lee, Heavy metal removal in the acid mine drainage using calcined eggshells and microalgae hybrid system, Environ. Sci. Pollut. Res., 22(17), 13404-13411 (2015).
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23 |
J. Goel, K. Kadirvelu, C. Rajagopal, Kumar, and V. Garg, Removal of lead(II) by adsorption using treated granular activated carbon: batch and column studies, J. Hazard. Mater., 125(1), 211-220 (2005).
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24 |
Z. Guo, J. Zhang, Y. Kang, and H. Liu, Rapid and efficient removal of Pb(II) from aqueous solutions using biomass-derived activated carbon with humic acid in-situ modification, Ecotoxicol. Environ. Saf., 145, 442-448 (2017).
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25 |
B. G. Alhogbi, Potential of coffee husk biomass waste for the adsorption of Pb(II) ion from aqueous solutions, Sustain Chem. Pharm., 6, 21-25 (2017).
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26 |
S. Y. Lee and H. J. Choi, Persimmon leaf bio-waste for adsorptive removal of heavy metals from aqueous solution, J. Environ. Manag., 209, 382-392 (2018).
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27 |
A. S. Franca, L. S. Oliveira, and M. E. Ferreira, Kinetics and equilibrium studies of methylene blue adsorption by spent coffee grounds, Desalination, 249(1), 267-272 (2009).
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28 |
V. Boonamnuayvitaya, C. Chaiya, W. Tanthapanichakoon, and S. Jarudilokkul, Removal of heavy metals by adsorbent prepared from pyrolyzed coffee residues and clay, Sep. Purif. Technol., 35, 11-22 (2004).
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29 |
N. Azouaou, Z. Sadaoui, A. Djaafri, and H. Mokaddem, Adsorption of cadmium from aqueous solution onto untreated coffee grounds: Equilibrium, kinetics and thermodynamics, J. Hazard. Mater., 184(1-3), 126-134 (2010).
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