Optimization of Pb2+, Cd2+, Ni2+ and Ba2+ adsorption onto light expanded clay aggregate (LECA)





Adsorption, Toxic Metals, Light Expanded Clay Aggregate


The possibility of Pb2+, Cd2+, Ni2+ and Ba2+ ions removal from aqueous solution using light expanded clay aggregate (LECA) was investigated in this work. The central composite design (CCD) in response surface methodology (RSM) was used to optimize the operating parameters (adsorbent granulometry, absorption time and initial metal ions concentration) to reach the maximum ions removal in single and multi-elemental solutions. After optimization, the results shows that the removal efficiency decrease following the ion sequence Pb2+ > Ba2+ > Cd2+ > Ni2+ ions. The better efficiency (~95%) is observed for the Pb2+. The Langmuir and Freundlich isotherm models were applied to the equilibrium data at room temperature. The results revealed that data on LECA was very well fitted with Langmuir equations. The real interest of this work is to demonstrate that a simple material such as LECA can be used to remove extremely small levels of toxic metals, such as those found in drinking water. So our results could be the starting point for the development of a low-cost filtration system to remove toxic metals.


Download data is not yet available.

Author Biographies

Helen Sandra de Sousa Laet Mundim, Universidade Federal do Triângulo Mineiro, Uberaba, MG

Master’s in Environmental Science and Technology.

Brunno Borges Canelhas, Instituto Federal do Triângulo Mineiro, Uberaba, MG

Professor, PhD in Chemistry.

Fausto de Souza Pagan, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brazil

Master’s in Chemistry

Júlio Cesar de Sousa Inácio Gonçalves, Universidade Federal do Triângulo Mineiro, Uberaba, MG

Professor, PhD in Science (Hydraulics and Sanitation).

Mário Sérgio da Luz, Universidade Federal do Triângulo Mineiro, Uberaba, MG

Graduated in Chemical Engineering from the Faculdade de Engenharia Química de Lorena. Master in Materials Engineering from the Faculdade de Engenharia Química de Lorena. PhD from the Faculdade de Engenharia de Lorena - USP with emphasis on Materials Engineering. Postdoctoral at the Montana State University - USA and at the Universidade de São Paulo. Professor at the Federal Universidade Federal do Triângulo Mineiro.

Deusmaque Carneiro Ferreira, Universidade Federal do Triângulo Mineiro, Uberaba, MG

Professor, PhD in Chemistry


AKPOMIE, KG, DAWODU, FA, ADEBOWALE, KO. Mechanism on the sorption of heavy metals from binary-solution by a low-cost montmorillonite and it’s desorption potential. Alexandria Engineering Journal. 2015; 54: 757-767.

AMIRI H, JAAFARZADEH N, AHMADI M, MARTINEZ SS. Application of LECA modified with Fenton in arsenite and arsenate removal as an adsorbent. Desalination. 2011; 272: 212-217.

ASHIQ A, WALPITA J, VITHANAGE M. Functionalizing non-smectic clay via methoxy-modification for enhanced removal and recovery of oxytetracycline from aqueous media. Chemosphere. 2021; 276: 130079.

DASGUPTA S, DAS M, KLUNK MA, XAVIER SJS, CAETANO NR, WANDER PR. Copper and chromium removal from synthetic textile wastewater using clay minerals and zeolite through the effect of pH. Journal of Iraniani Chemical Society. 2021; 21: 02273.

ĐUKIĆ A, JOVANOVIĆ U, TUVIĆ T, ANDRIĆ V, GRBOVIĆNOVAKOVIĆ J, IVANOVIĆ N, MATOVIĆ L. The potential of ball-milled Serbian natural clay for removal of heavy metal contaminants from wastewaters: Simultaneous sorption of Ni, Cr, Cd and Pb ions. Ceram International. 2013; 39: 7173-7178.

EL KASSIMI A, ACHOUR Y, EL HIMRI M, LAAMARI MR, EL HADDAD M. High Efficiency of Natural Safiot Clay to Remove Industrial Dyes from Aqueous Media: Kinetic, Isotherm Adsorption and Thermodynamic Studies. Biointerface Research in Applied Chemistry. 2021; 11: 12717-12731.

FERREIRA AR, GUEDES P, MATEUS EP, RIBEIRO AB, COUTO N. Comparative assessment of LECA and Spartina maritime to remove emerging organic contaminants from wastewater. Environmental Science and Pollution Research. 2017; 24: 7208-7215.

GUNATILAKE SK, MULTIDISCIP J. Methods of Removing Heavy Metals from Industrial Wastewater. Eng. Sci. Stud. 2015; 1: 12–18.

HANI H. The analysis of inorganic and organic pollutants in soil with special regard to their bioavailability. Int. J. Environ. Anal. Chem. 2009; 39: 197–208.

HAQUE N, MORRISON G, CANO-AGUILERA I, GARDEA-TORRESDEY JL. Iron-modified light expanded clay aggregates for the removal of arsenic (V) from ground water. Microchemical Journal. 2008; 88: 7-13.

HIRADE Y, ISHIDA T, SHIMADA T, TAKAGI S. Adsorption and absorption behavior of cationic porphyrin on titania and clay nanosheets. Colloids and Surfaces A-Physicochemical and Engineering Aspects. 2021; 624: 126747.

HE GD, ZHANG ZM, WU XL, CUI MY, ZHANG JC, HUANG XF. Adsorption of Heavy Metals on Soil Collected from Lixisol of Typical Karst Areas in the Presence of CaCO3 and Soil Clay and Their Competition Behavior. Sustainability. 2020; 12: 7315.

INCE M AND KAPLAN O. Ince, in Biochemical Toxicology – Heavy Metals and Nanomaterials, 2019; 1–20.

RAI PK AND TRIPATHI BD. Toxicol. Environ. Chem. 2008; 90: 247–257.

SHARIFNIA S, KHADIVI MA, SHOJAEIMEHR T, SHAVISI Y. Characterization, isotherm and kinetic studies for ammonium ion adsorption by light expanded clay aggregate (LECA). Journal of Saudi Chemical Society. 2016; 20: S342-S351.

SHOJAEIMEHR T, RAHIMPOUR F, KHADIVI MA, SADEGHI M. A modeling study by response surface methodology (RSM) and artificial neural network (ANN) on Cu2+ adsorption optimization using light expended clay aggregate (LECA). Journal of Industrial and Engineering Chemistry, 2014; 20: 870-880.

YAGHI N, HARTIKAINEN H. Effect of oxide coatings, pH and competing anion on the sorption of arsenic species onto Light Expanded Clay Aggregates (LECA's). Environmental Technology & Innovation. 2018; 9: 30-37.

ZAGHLOUL A, ICHOU AA, ABALI M, BENHITI R, SOUDANI A, CARJA G, CHIBAN M, ZERBET M, SINAN F. Removal and Comparative Adsorption of Anionic Dye on Various MgAl synthetic Clay. Biointerface Research in Applied Chemistry. 2021; 11: 14986-14997.



2022-04-04 — Updated on 2022-04-12


How to Cite

Mundim, H. S. de S. L., Canelhas, B. B., Pagan, F. de S., Gonçalves, J. C. de S. I., Luz, M. S. da ., & Ferreira, D. C. (2022). Optimization of Pb2+, Cd2+, Ni2+ and Ba2+ adsorption onto light expanded clay aggregate (LECA) . Ciência E Natura, 44, e3. https://doi.org/10.5902/2179460X68809 (Original work published April 4, 2022)




Most read articles by the same author(s)