An effective approach for the adsorptive removal of lead from an aqueous medium using nano Prosopis Cineraria leaf ash (NPCLA): characterization, operational effects, and recyclability

  • Arash Afsar Shahmaleki
  • Mohsen MotevasselEmail author
  • Ali Akbar Isari
  • Bagher Anvaripour
Original Article


Currently, the pollution of water by heavy metals is a common environmental problem because heavy metals are non-biodegradable and dangerous to human health at very low concentrations. Lead is one of the most prevalent heavy metals utilized in various industrial processes. In this study, an adsorbent made from nano Prosopis cineraria leaf ash (NPCLA) was successfully synthesized and characterized for the first time using Brunauer–Emmett–Teller (BET) method, field emission scanning electron microscope (FESEM), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), and energy-dispersive analysis of X-rays (EDAX). The findings from the XRD analysis showed that the structure of the NPCLA predominantly included CaCO3 and SiO2 crystal phases. Batch adsorption experiments were performed as a function of reaction time, pH (2–10), initial concentration of lead (30–120 mg/L), and NPCLA dosage (1–3 g/L). According to the results, the lead ions were completely removed from an aqueous solution at a temperature of 25 °C with an NPCLA dosage of 2.5 g/L, an initial lead concentration of 30 mg/L, pH of 6, and after 100 min of reaction time. The NPCLA adsorbent demonstrated high stability and recyclability after six runs of the lead removal experiments. The equilibrium adsorption data were fitted to a pseudo-second-order kinetic model and the Langmuir isotherm model.


Nano adsorbent Lead removal Operational effects Characterization 



This article was supported by the Petroleum University of Technology, Abadan, Iran (Project No.: 2146-3242).

Compliance with ethical standards

Conflict of interest

The authors declare no competing financial interest.


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Chemical Engineering, Abadan Faculty of Petroleum EngineeringPetroleum University of TechnologyAbadanIran
  2. 2.Department of Basic and Applied Sciences for EngineeringSAPIENZA University of RomeRomeItaly

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