The effective removal of heavy metals from water by activated carbon adsorbents of Albizia lebbeck and Melia azedarach seed shells M., Nazir R., Khan M., Khan W., Shah M., Afridi S.G., Zada A. (2020): The effective removal of heavy metals from water by activated carbon adsorbents of Albizia lebbeck and Melia azedarach seed shells. Soil & Water Res., 15: 30-37.
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The removal of toxic metals like lead (Pb) and cadmium (Cd) is very urgent keeping their hazardous effects in view. In this work, seeds of Albizia lebbeck and Melia azedarach trees were converted into activated carbon adsorbents and applied for the adsorptive removal of Pb and Cd metals from an aqueous solution. The as prepared adsorbents were characterised by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The removal efficiencies of both metals were strongly dependent on their initial concentration, contact time, pH, temperature and the quantity of adsorbents. 0.2 g of both adsorbents removed respectively 75 and 62% Pb and 77 and 66% Cd from from 100 ml of a 40 mg/l concentrated solution in 120 min at pH 5 and a temperature of 20°C. Both the Freundlich and Langmuir isotherms were well fitted to the experimental data. We believe that this work will provide a convenient way to synthesise low cost activated carbon adsorbents for the remediation of highly toxic metals from wastewater to safeguard our environment for future generations.

Ali N., Awais, Kamal T., Ul-Islam M., Khan A., Shah S.J., Zada A. (2018): Chitosan-coated cotton cloth supported copper nanoparticles for toxic dye reduction. International Journal of Biological Macromolecules, 111: 832–838.
Ali N., Zada A., Muhammad Z., Ismail A., Rafiq M., Riaz A., Khan A. (2019): Enhanced photodegradation of methylene blue with alkaline and transition-metal ferrite nanophotocatalysts under direct sun light irradiation. Journal of the Chinese Chemical Society, 66: 402–408.
Budinova T., Savova D., Tsyntsarski B., Ania C.O., Cabal B., Parra J.B., Petrov N. (2009): Biomass waste-derived activated carbon for the removal of arsenic and manganese ions from aqueous solutions. Applied Surface Science, 255: 4650–4657.
Burakov A.E., Galunin E.V., Burakova I.V., Kucherova A.E., Agarwal S., Tkachev A.G., Gupta V.K. (2018): Adsorption of heavy metals on conventional and nanostructured materials for wastewater treatment purposes: A review. Ecotoxicology and Environmental Safety, 148: 702–712.
Cao J., Wei L., Huang Q., Wang L., Han S. (1999): Reducing degradation of azo dye by zero-valent iron in aqueous solution. Chemosphere, 38: 565–571.
Cen S., Li W., Xu S., Wang Z., Tang Y., Wang H., Wei C. (2017): Application of magnetic Cd2+ ion-imprinted mesoporous organosilica nanocomposites for mineral wastewater treatment. RSC Advances, 7: 7996–8003.
Chammui Y., Sooksamiti P., Naksata W., Thiansem S., Arqueropanyo O.A. (2014): Removal of arsenic from aqueous solution by adsorption on Leonardite. Chemical Engineering Journal, 240: 202–210.
Demey H., Vincent T., Guibal E. (2018): A novel algal-based sorbent for heavy metal removal. Chemical Engineering Journal, 332: 582–595.
Gupta V.K., Nayak A. (2012): Cadmium removal and recovery from aqueous solutions by novel adsorbents prepared from orange peel and Fe2O3 nanoparticles. Chemical Engineering Journal, 180: 81–90.
Huang J., Yuan F., Zeng G., Li X., Gu Y., Shi L., Liu W., Shi Y. (2017): Influence of pH on heavy metal speciation and removal from wastewater using micellar-enhanced ultrafiltration, Chemosphere, 173: 199–206.
Huang Y., Zeng X., Guo L., Lan J., Zhang L., Cao D. (2018): Heavy metal ion removal of wastewater by zeolite-imidazolate frameworks. Separation and Purification Technology, 194: 462–469.
Jamali A., Tehrani A.A., Shemirani F., Morsali A. (2016): Lanthanide metal-organic frameworks as selective microporous materials for adsorption of heavy metal ions. Dalton Transactions, 45: 9193–9200.
Mahaninia M.H., Rahimian P., Kaghazchi T. (2015): Modified activated carbons with amino groups and their copper adsorption properties in aqueous solution. Chinese Journal of Chemical Engineering, 23: 50–56.
Maurer M., Boller M. (1999): Modelling of phosphorus precipitation in wastewater treatment plants with enhanced biological phosphorus removal. Water Science and Technology, 39: 147–163.
Rock S.L., Stevens B.W. (1975): Polymeric adsorption-ion exchange process for decolorizing dye waste streams. Textile Chemist & Colorist, 7: 169–171.
Saleh M.E., El-Refaey A.A., Mahmoud A.H. (2016): Effectiveness of sunflower seed husk biochar for removing copper ions from wastewater: a comparative study. Soil and Water Research, 11: 53–63.
Shi J., Fang Z., Zhao Z., Sun T., Liang Z. (2016): Comparative study on Pb(II), Cu(II), and Co(II) ions adsorption from aqueous solutions by arborvitae leaves. Desalination and Water Treatment, 57: 4732–4739.
Vytopilová M., Tejnecký V., Borůvka L., Drábek O. (2015): Sorption of heavy metals in organic horizons of acid forest soils at low added concentrations. Soil and Water Research, 10: 1–9.
Wang J., Qin C., Wang H., Chu M., Zada A., Zhang X., Li J., Raziq F., Qu Y., Jing L. (2018a): Exceptional photocatalytic activities for CO2 conversion on Al-O bridged g-C3N4/α-Fe2O3 Z-scheme nanocomposites and mechanism insight with isotopes. Applied Catalysis B: Environmental, 221: 459–466.
Wang X., Huang K., Chen Y., Liu J., Chen S., Cao J., Mei S., Zhou Y., Jing T. (2018b): Preparation of dumbbell manganese dioxide/gelatin composites and their application in the removal of lead and cadmium ions. Journal of Hazardous Materials, 350: 46–54.
Xu J., Cao Z., Zhang Y., Yuan Z., Lou Z., Xu X., Wang X. (2018): A review of functionalized carbon nanotubes and graphene for heavy metal adsorption from water: Preparation, application, and mechanism. Chemosphere, 195: 351–364.
Yang W.P., Zhang Z.J., Deng W. (2003): Simultaneous, sensitive and selective on-line chemiluminescence determination of Cr(III) and Cr(VI) by capillary electrophoresis. Analytica Chimica Acta, 485: 169–177.
Zada A., Qu Y., Ali S., Sun N., Lu H., Yan R., Zhang X., Jing L. (2018): Improved visible-light activities for degrading pollutants on TiO2/g-C3N4 nanocomposites by decorating SPR Au nanoparticles and 2,4-dichlorophenol decomposition path. Journal of Hazardous Materials, 342: 715–723.
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