• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology


Indian Journal of Science and Technology

Year: -0001, Volume: 11, Issue: 45, Pages: 1-6

Original Article

Application of Cement-based Solidification/ Stabilization Technique for Immobilizing Lead and Nickel Ions after Sorption-desorption Cycles using Cassava Peels Biomass


Background: Immobilization of heavy metals pollutants has attached major attention to face environmental problems of adsorbent disposal after concluding its useful life. Objective: This work is focused on studying adsorption-desorption cycles of nickel and lead ions onto cassava peels biomass and applying cement-based solidification/stabilization technique to immobilize these heavy metals. Materials and Methods: The cassava peels biomass was characterized by FT-IR technique in order to determine functional groups involving in adsorption process. Adsorption capacity was calculated in four adsorption cycles for both nickel and lead uptake. Desorption yield was determined by varying desorbing agent type and its concentration. Immobilization technique was applied to prepare bricks, which were subjected to compression resistance testing and leaching experiments. Results: It was found that the maximum adsorption capacities for nickel and lead ions were 19.63 and 12.42 mg/g, respectively. The desorption experiments reported better results using hydrochloric acid for lead and nitric acid for nickel. In addition, all the bricks can resist compression and obey environmental policy for leaching. Improvement/Novelty: The suitability of immobilization technique to reduce environmental issues of heavy metals. 

Keywords: Adsorption, Cement, Biomass, Immobilization, Pollutants


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