Leaching in Acidic and Neutral Media of Heavy Metals from Cementitious Matrices Containing Ashes Resulting of Moukondo Landfill Waste Burning in Brazzaville (Republic of Congo)

Kiele Molingo Mbemba^1, , Mithé Brice Mabiala Loubilou¹ and Jean Maurille Ouamba¹

¹Université Marien NGOUABI, Unité de Chimie du Végétal et de la Vie, Faculté des Sciences et Techniques, B.P. 69, Brazzaville, Congo

Cite this paper:
Kiele Molingo Mbemba, Mithé Brice Mabiala Loubilou and Jean Maurille Ouamba. Leaching in Acidic and Neutral Media of Heavy Metals from Cementitious Matrices Containing Ashes Resulting of Moukondo Landfill Waste Burning in Brazzaville (Republic of Congo). Journal of Environment Pollution and Human Health. 2023; 11(3):60-71. doi: 10.12691/jephh-11-3-2

Abstract

Inadequate management of ashes generated by household waste burning in open air leads to sites pollution, particularly through contamination with heavy metals (Pb, Ni, Cr, Cu, Zn...). The objective of this study is to evaluate the chemical durability of cementitious matrices containing ashes from waste burning by using static leaching tests. To do this, several cementitious matrices were synthesized with different ash/cement/lime ratios (P0, P1, P2, P3, P4, P5 and P6). These cementitious matrices then underwent leaching static tests at 25°C in acid (pH=4) and neutral (pH=7) media. Static leaching tests carried out on monoliths made it possible to evaluate heavy metals immobilization effectiveness in cementitious matrices network. The results of this study highlighted the good chemical durability provided by the stabilization/solidification of ashes in cementitious matrices. All cementitious matrices leachates present very low heavy metals concentrations with are below the standard applicable to leachate discharge. Heavy metals concentrations in cementitious matrices leachates are also very largely below the heavy metals concentrations released by raw ashes leaching. Heavy metals retention rates inside cementitious matrices range between 80 and 99% for arsenic, lead, chromium, copper, nickel and zinc.

Keywords:
heavy metals cement ashes leaching stabilization solidification

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References:

[1]	INS, 2018. Annuaire Statistique du Congo. Edition 2020.
[2]	Kimbatsa F.G., Mouthou, J.L., Bakanahonda, S.F.L. 2018. The management of household waste by pre-collection operators in the districts 1 Makélékélé, 2 Bacongo and 6 Talangai (Brazzaville, Congo). The Social Sciences journal “Kafoudal”, 2, pp.12-27.
[3]	Ouiza Ould A. 2018. Impact of open landfills on the environmental quality of Oued Cheliff (Algeria). Thesis from Abdelhamid Ibn Badis Mostaganem University. Algeria. 193p.
[4]	Javad Asgari M., Safavi M., Mortazaeinezahad F. 2011. Landfill biogas production process. International Conference on Food Engineering and Biotechnology Ipcbee Iacsit Press, Singapoore; 9.
[5]	Yukalang, N., Clarke, B. and Ross, K. 2017. Barriers to Effective Municipal Solid Waste Management in a Rapidly Urbanizing Area in Thailand. Int. J. Environ. Res. Public Health, 14, 1013.
[6]	Igboama, W.N., Hammed, O.S., Fatoba, J. O., Aroyehun, M. T., Ehiabhili, J.C. 2022. Review article on impact of groundwater contamination due to dumpsites using geophysical and physiochemical methods. Applied Water Science, 12: 130.
[7]	Vacenovska, B. and Drochytka, R. 2012. Development of a new reclamation material by hazardous waste solidification/stabilization. Advanced Materials Research, Vols. 446-449, pp 2793-2799.
[8]	Hiller E., Bartal M., Milička. J, et al. 2009. Environmental fate of the herbicide MCPA in two soils as affected by the presence of wheat ash. Water Air Soil Pollut; 197(1-4):395-402.INS, 2018. Annuaire Statistique du Congo. Edition 2020.
[9]	Hiller E., Fargašová A., Zemanová L., et al. 2008. Influence of wheat ash on the MCPA immobilization in agricultural soils. Bull. Environ. Contam. Toxicol, 81(3): 285-8.
[10]	Qiu Y., Cheng H., Xu C., et al. 2008. Surface characteristics of crop-residue-derived black carbon and lead (II) adsorption. Water Res.; 42 (3):567-74.
[11]	Bouchelaghem, A., 1994. Stabilization and solidification of special industrial waste. Technique, Science and Methods, n°4, 9-13.
[12]	Conner J.R. 1990. Chemical fixation and solidification of hazardous wastes. New-York: Van Nostand Reinhold, 692.
[13]	Ecole d’Avignon. 2016. Techniques and practices of Avignon lime. Eyrolles bookstores. France.
[14]	Deschamps,T., Benzaazoua, M., Bussière, B., Belem, T. et Mbonimpa, M. 2006. Retention mechanisms of heavy metals in solid phase: case of stabilization of contaminated soils and industrial waste. VertigO – The journal in environmental sciences, Vol7, no2.
[15]	Kimbatsa F.G., Mahoungou, E. et Berton Ofouemé Y. 2018. The importance of horticulture in the fight against food insecurity, poverty and environmental protection in Brazzaville (Republic of Congo). OpenEdition Journals Caribbean Studies. 38-40, pp.1-47.
[16]	Stronach, S.A., Marcheur, T.N.L., Macphée, D.E. et F.P. 1997. Reaction betwen cement and As (III) oxide: The system Cao-SiO2-As2O3-H2O at 25° C. Waste Management, 12, 9-13p.
[17]	Ortego, D.J., Jackson, S., Yu, G.S., McWhinney, H., & Cocke D.L. 1989. Solidification of hazardous substances‐a TGA and FTIR study of Portland cement containing metal nitrates. Journal of Environmental Science and Health, 24(6), pp.589-602.
[18]	Cartledge, F.K., Butler, L. G., Chalasani, D., Eaton, H. C., Frey, F.P., Herrera, E., TittlebaumetShou Lan Yang, M. E. 1990 : Immobilisation mechanisms in solidifiaction/stabilization of Cd and Pb salts using Portland cement fixing agents, Environmental science and technology, 24, 867-873p.
[19]	Cocke, D. L. 1990. Binding chemistry and leaching mechanisms of hazardous substances in cementitious solidification/stabilization systems”, J. Hazard. Mater, 24, pp. 231-253.
[20]	Cocke, D. L., Mollah, M. Y. A., Parga, J. R., Hess, T. R., et Ortego, T. R. 1992. An XPS and SEM/EDS characterization of leaching effects on lead- and zinc-doped Portland cement. J. Hazard.. Mater. 30, 83-95.
[21]	Diet J.N. 1996. Stabilization/solidification of waste: disruption of the hydration of Portland cement by substances contained in metal hydroxide sludge. Doctoral thesis. National Institute of Applied Sciences of Lyon, 170p.
[22]	Topanou K.A.N. 2012. Management of household solid waste in the city of Abomey-Calavi (Benin): Characterization and recovery tests by composting. Joint thesis from the University of Abomey-Calavi (Benin) and Marseille (France), 194p.
[23]	Fowler, G. D., Asavapisit, S., Fromager, C. R. et Perry, R. 1995. A Study of the chemical effect of metal hydroxides upon cement hydratation reaction. In: International congress on wastes solidification-stabilization processes, Nancy, France.
[24]	Macphee, D.E., Glasser, F.P. 1993. Immobilization science of cement systems. MRS, bulletin, March. 66-71p.
[25]	Kindness A., Macías, A. et F. Glasser. 1994. Immobilization of chromium in cement matrices. Waste management, 14, 3-11p.
[26]	Lin, C.K., Chen, J.N. et Li, C.C. 1997. NMR, XRD and EDS study of solidification/stabilisation of chromium with Portland cement and C3S. Journal of Hazardous Materials, 56, pp.21-34.
[27]	Tedoldia, D., Flanagana, K., Le Rouxa, J., Chebboa, G., Branchuc, P., Saada, M. and Gromairea, M.C. 2019. Evaluation of contaminant retention in the soil of sustainable drainage systems: methodological reflections on the determination of sorption isotherms. Blue-Green Systems Vol 1 No 1.
[28]	Al-Jabari, M. 2022. Integral waterproofing of concrete structures. Advanced concrete protection technologies by pore blocking and coating. Woodhead Publishing Series, p.1-36.
[29]	Poon, C. S., Peters, C. J., Perry, R., Barnes, P., Barker, A. P. 1985. Mechanisms of Metal Stabilization by Cement Based Fixation Processes." Sci. Total Environ, 41(1), 55-71.
[30]	Ben Maaouia, O. 2018. Suitability of aggregates from deconstruction concrete for reuse, with respect to Cr(VI): Impact of the properties of the cement matrix and identification of release mechanisms. Doctoral thesis from the University of PARIS-EST. 203p.
[31]	Ben Maaouia, O., Hamzaoui, R., Bennabi, A., Colin, J. and Colina, H. 2017. Study of the stabilization of hexavalent chromium in cementitious matrices of demolition concrete elders. 35th AUGC Meetings, ECN/UN, Nantes.
[32]	Ziegler, F., Giéreet, R., Johnson, C, A. 2001a. Sorption on Mechanisms of Zinc to Calcium Silicate Hydrate: Sorption and Microscopic Investigations. Environmental science and technology, 35, 4556-4561.
[33]	Ngamba, H. 2007. Decentralization and strengthening of urban management in Cameroon: Differentiated collection of household waste in Douala. City management report. 14-15p.
[34]	Ziegler, F., Scheidegger, A.M., Johnson, C, A., Dahn, R., Wieland, E. 2001b. Sorption Mechanisms of Zinc to Calcium Silcate Hydrate: X-ray Absorption Fine Structure (XAFS) Investigation. Environmental science and technology, 35, 1550, 1555p.
[35]	De Windt, L., Badreddine, R. 2007. Modelling of long-term dynamic leaching test applied to solidified/stabilized waste. Waste Management 27, 1638-1647p.
[36]	Trauchessec, R. 2013. Mixtures of sulfoaluminate and Portland cements. Thesis from the University of Lorraine, 265p.
[37]	Stengele R. H. and Ruedi M. 2012. Requirements for discharge of landfill leachate. Recommendations for its assessment, treatment and discharge. Federal Office for the Environment, Bern. The practical environment n 1223: 62 p.
[38]	Hodula, J., Dohnálkováa, B. and Drochytka, R. 2015. Solidification of hazardous waste with the aim of material utilization of solidification products. 7th Scientific-Technical Conference Material Problems in Civil Engineering. Procedia Engineering 108, 639 – 646
[39]	Peyronnard O. 2008. Methodological contributions for modeling the leaching behavior of mineral residues: Application to solidified metal hydroxide sludges. Thesis from INSA Lyon. France.
[40]	Manceau A., Marcus M. A. and Tamura N. 2002. Quantitative speciation of heavy metals in soils and sediments by synchrotron X-ray techniques. In Applications of Synchrotron Radiation in Low-Temperature Geochimistry and Environmental Science. Reviews in mineralogy and Geochimistry, Mineralogical society of America, 49, 341-428p.
[41]	Rambure K. K. 2013. Towards new mineral matrices for the immobilization and recovery of final waste from the incineration of household waste. Thesis from Paris-Est University. France.