A Novel, Recyclable Magnetic Biochar Modified by Chitosan-EDTA for the Effective Removal of Pb(ii) from Aqueous Solution

Overview

Journal RSC Adv

Publisher Royal Society of Chemistry

Specialty Chemistry

Date 2022 May 6

PMID 35520875

Authors

Liwen Zheng

Yongchao Gao

Jianhua Du

Wen Zhang

Yujie Huang

Leilei Wang

Qingqing Zhao

Xiangliang Pan

Affiliations

Soon will be listed here.

Abstract

We report here the preparation process of a recyclable magnetic biochar functionalized with chitosan and ethylenediaminetetraacetic acid (E-CMBC). This prepared biochar was then evaluated regarding its adsorption performance for Pb(ii) from an aqueous solution along with the potential adsorption mechanisms behind this process. XRD and SEM analyses showed that the magnetite particles were successfully embedded into biochar and the subsequent surface coating of chitosan and ethylenediaminetetraacetic acid modification were also successful. The effects of the adsorbent dosage, ionic strength, initial solution pH, and contact time, on adsorption kinetics, adsorption isotherms, adsorption thermodynamics and regeneration performance were investigated. The removal of Pb(ii) was dramatically improved to 156.68 mg g compared with that by unmodified pristine biochar (10.90 mg g) at pH 3.0. In the range of pH 2.0-5.0, the adsorption performance of Pb(ii) by E-CMBC remained above 152.50 mg g, which suggested that the adsorption capacity of the novel sorbent was not impacted by the competing adsorption of hydrogen cations under acidic conditions. The adsorption process could be well described by the Avrami fractional-order and Langmuir models. Thermodynamic analysis proved that the adsorption process was spontaneous and endothermic. The magnetic strength of E-CMBC was measured as 3.1 emu g, suggesting that the consumed E-CMBC could be separated from water by an external magnet. A regeneration study showed that after three cycles of adsorption-desorption, 78.60% of the sorbent was recovered and 97.26% of the adsorption capacity was retained. The adsorption mechanism investigation indicated that Pb(ii) adsorption was mainly due to the presence of functional amides and carboxyl groups of E-CMBC forming strong chemical complexation. In conclusion, E-CMBC is a novel, recyclable, and highly efficient adsorbent for removal of Pb(ii) from aqueous solution.

Citing Articles

Modified coconut shell biochars (MCSBCs): Fabrication and their adsorptions for Pb(II).

Chen J, Duan Q, Ji C, Liu J, Wang Z, Song J Heliyon. 2024; 10(11):e32422.

PMID: 38933981 PMC: 11200355. DOI: 10.1016/j.heliyon.2024.e32422.

Preparation and adsorption properties of magnetic chitosan/sludge biochar composites for removal of Cu ions.

Zhang M, Liu Y, Yin Z, Feng D, Lv H Sci Rep. 2023; 13(1):20937.

PMID: 38017022 PMC: 10684598. DOI: 10.1038/s41598-023-46815-4.

A carbon dot-based clay nanocomposite for efficient heavy metal removal.

Jlassi K, Al Ejji M, Ahmed A, Mutahir H, Sliem M, Abdullah A Nanoscale Adv. 2023; 5(16):4224-4232.

PMID: 37560431 PMC: 10408590. DOI: 10.1039/d3na00334e.

Aminopolycarboxylic Acids-Functionalized Chitosan-Based Composite Cryogels as Valuable Heavy Metal Ions Sorbents: Fixed-Bed Column Studies and Theoretical Analysis.

Dinu M, Humelnicu I, Ghiorghita C, Humelnicu D Gels. 2022; 8(4).

PMID: 35448122 PMC: 9030056. DOI: 10.3390/gels8040221.

References

Bombuwala Dewage N, Fowler R, Pittman Jr C, Mohan D, Mlsna T . Lead (Pb) sorptive removal using chitosan-modified biochar: batch and fixed-bed studies. RSC Adv. 2022; 8(45):25368-25377. PMC: 9082581. DOI: 10.1039/c8ra04600j. View

Yang X, Wan Y, Zheng Y, He F, Yu Z, Huang J . Surface functional groups of carbon-based adsorbents and their roles in the removal of heavy metals from aqueous solutions: A critical review. Chem Eng J. 2021; 366:608-621. PMC: 8437042. DOI: 10.1016/j.cej.2019.02.119. View

Yan Y, Zhang L, Wang Y, Wang X, Wang S, Li Q . Clanis bilineata larvae skin-derived biochars for immobilization of lead: Sorption isotherm and molecular mechanism. Sci Total Environ. 2019; 704:135251. DOI: 10.1016/j.scitotenv.2019.135251. View

Deng J, Liu Y, Liu S, Zeng G, Tan X, Huang B . Competitive adsorption of Pb(II), Cd(II) and Cu(II) onto chitosan-pyromellitic dianhydride modified biochar. J Colloid Interface Sci. 2017; 506:355-364. DOI: 10.1016/j.jcis.2017.07.069. View

Zhang M, Gao B, Varnoosfaderani S, Hebard A, Yao Y, Inyang M . Preparation and characterization of a novel magnetic biochar for arsenic removal. Bioresour Technol. 2013; 130:457-62. DOI: 10.1016/j.biortech.2012.11.132. View

Kobya M, Demirbas E, Senturk E, Ince M . Adsorption of heavy metal ions from aqueous solutions by activated carbon prepared from apricot stone. Bioresour Technol. 2005; 96(13):1518-21. DOI: 10.1016/j.biortech.2004.12.005. View

Repo E, Warchol J, Bhatnagar A, Sillanpaa M . Heavy metals adsorption by novel EDTA-modified chitosan-silica hybrid materials. J Colloid Interface Sci. 2011; 358(1):261-7. DOI: 10.1016/j.jcis.2011.02.059. View

Zou Y, Wang X, Khan A, Wang P, Liu Y, Alsaedi A . Environmental Remediation and Application of Nanoscale Zero-Valent Iron and Its Composites for the Removal of Heavy Metal Ions: A Review. Environ Sci Technol. 2016; 50(14):7290-304. DOI: 10.1021/acs.est.6b01897. View

Ma J, Xia M, Zhu S, Wang F . A new alendronate doped HAP nanomaterial for Pb, Cu and Cd effect absorption. J Hazard Mater. 2020; 400:123143. DOI: 10.1016/j.jhazmat.2020.123143. View

10.

Son E, Poo K, Mohamed H, Choi Y, Cho W, Chae K . A novel approach to developing a reusable marine macro-algae adsorbent with chitosan and ferric oxide for simultaneous efficient heavy metal removal and easy magnetic separation. Bioresour Technol. 2018; 259:381-387. DOI: 10.1016/j.biortech.2018.03.077. View

11.

Dupont L, Guillon E . Removal of hexavalent chromium with a lignocellulosic substrate extracted from wheat bran. Environ Sci Technol. 2003; 37(18):4235-41. DOI: 10.1021/es0342345. View

12.

Son E, Poo K, Chang J, Chae K . Heavy metal removal from aqueous solutions using engineered magnetic biochars derived from waste marine macro-algal biomass. Sci Total Environ. 2017; 615:161-168. DOI: 10.1016/j.scitotenv.2017.09.171. View

13.

Chen H, Teng Y, Lu S, Wang Y, Wang J . Contamination features and health risk of soil heavy metals in China. Sci Total Environ. 2015; 512-513:143-153. DOI: 10.1016/j.scitotenv.2015.01.025. View

14.

Sud D, Mahajan G, Kaur M . Agricultural waste material as potential adsorbent for sequestering heavy metal ions from aqueous solutions - a review. Bioresour Technol. 2008; 99(14):6017-27. DOI: 10.1016/j.biortech.2007.11.064. View

15.

Tran H, Tran L, Nguyen T . Preparation of chitosan/magnetite composite beads and their application for removal of Pb(II) and Ni(II) from aqueous solution. Mater Sci Eng C Mater Biol Appl. 2018; 30(2):304-310. DOI: 10.1016/j.msec.2009.11.008. View

16.

Wang C, Wang H . Pb(II) sorption from aqueous solution by novel biochar loaded with nano-particles. Chemosphere. 2017; 192:1-4. DOI: 10.1016/j.chemosphere.2017.10.125. View

17.

Qu J, Liu Y, Cheng L, Jiang Z, Zhang G, Deng F . Green synthesis of hydrophilic activated carbon supported sulfide nZVI for enhanced Pb(II) scavenging from water: Characterization, kinetics, isotherms and mechanisms. J Hazard Mater. 2020; 403:123607. DOI: 10.1016/j.jhazmat.2020.123607. View

18.

Wu D, Hu L, Wang Y, Wei Q, Yan L, Yan T . EDTA modified β-cyclodextrin/chitosan for rapid removal of Pb(II) and acid red from aqueous solution. J Colloid Interface Sci. 2018; 523:56-64. DOI: 10.1016/j.jcis.2018.03.080. View

19.

Mohan D, Pittman Jr C, Bricka M, Smith F, Yancey B, Mohammad J . Sorption of arsenic, cadmium, and lead by chars produced from fast pyrolysis of wood and bark during bio-oil production. J Colloid Interface Sci. 2007; 310(1):57-73. DOI: 10.1016/j.jcis.2007.01.020. View

20.

Xiao R, Wang S, Li R, Wang J, Zhang Z . Soil heavy metal contamination and health risks associated with artisanal gold mining in Tongguan, Shaanxi, China. Ecotoxicol Environ Saf. 2017; 141:17-24. DOI: 10.1016/j.ecoenv.2017.03.002. View