Lead Adsorption From Synthetic Wastewater by Prosopis Mimosaceae Sawdust

Abstract

Background: Lead is a toxic metal with a poor electrical conductivity. This metal can be hazardous and poisonous even in low concentrations. Objectives: The objective of this study is the evaluation of Prosopis Mimosaceae sawdust as a low-cost adsorbent for removal of the lead from effluents. Materials and Methods: The experiment was conducted in a batch system and the effect of pH, the amount of adsorbent, contact time, and the initial concentration of lead were examined. The most common isotherms and kinetics of adsorption were applied to analyze lead adsorption and the reaction rate, also the morphological characteristics of Prosopis Mimosaceae sawdust were determined before and after the separation process by using scanning electron microscope (SEM). Results: According to the results, the maximum efficiency of lead adsorption was 96.12%, which was obtained in pH of 7, contact time of 30 minutes, and 10 g/L of adsorbent. With the increase of the initial concentration of lead, the adsorbed metal at first increased, but later the removal percentage decreased. The data from this study indicated a good correspondence with both isotherms of Longmire and Freundlich. The kinetic analysis indicated that lead adsorption is consistent with the second-degree kinetic adsorption model (R 2 = 1). Conclusions: According to the high efficiency of lead removal by the sawdust of Prosopis Mimosaceae, this method can be applied as an efficient and low-cost method for the removal of lead.

Biosorption of Heavy Metal From Cadmium Rich Aqueous Solutions by Tea Waste as a Low Cost Bio-Adsorbent

“…Ghasemi and Mafigholami succeeded to remove lead from aqueous solutions with high removal efficiency using sawdust of Prosopis (Mimosaceae) (14). Cay introduced tea waste as a cheap biosorption to attract copper (1).…”

A comprehensive review on the decontamination of lead(ii) from water and wastewater by low-cost biosorbents

“…Ghasemi and Gholami 110 studied Pb( ii ) elimination from synthetic water making use of Myrtaceae sawdust. The influence of pH, contact time, dosage, and initial Pb( ii ) concentration was investigated using the batch technique.…”

Model-fitting approach for methylene blue dye adsorption onCamelinaandSapindusseeds-derived adsorbents

“…Many research works have been reported on various agricultural byproducts or low-cost adsorbents such as olive stones, peach stones, pistachio nut shells, date pits, olive pomace, Prosopis mimosaceae sawdust, Fumaria indica , diatomite, sea sand, guava leaf, Mucilaginous leaves of Diceriocaryum eriocarpum plant, eggshells, banana peel, pumpkin and rice husk in the production of low-cost adsorbents (Attia et al., 2008; Banat et al., 2007; Belhachemi and Addoun, 2011; Chowdhury and Saha, 2012; Crini, 2006; Edokpayi et al., 2015; Ghasemi and Gholami, 2015; Hameed and Daud, 2008; Iqbal and Khera, 2015; Kanyal and Bhatt, 2015; Lua et al., 2004; Nebagha et al., 2015; Ojedokun and Bello, 2016; Salman et al., 2015). In the present work, the potential of low-cost adsorbents produced from two agricultural wastes— Sapindus seeds hull (S) and Camelina (C)— in the removal of methylene blue from water is being done.…”