Application Of Modified Maize Hull For Removal Of Cu(II) Ions From Aqueous Solutions

Abstract

Discharge of industrial waste containing heavy metals to the environment is a main concern because of their toxicity to many life forms. Adsorption process is one of the conventional methods in order to adsorb heavy metals from wastewater effluents. Therefore, the removal of Cu(II) from aquatic solutions using modified maize hull was investigated. All experiments were performed in batch conditions. The residual Cu(II) concentration was measured by AAS. Upon increasing the adsorbent dosage, pH, and contact time and decreasing Cu(II) concentration, the removal efficiency of Cu(II) ions increased. In optimum conditions, 50% of copper was removed by modified maize hull. The experimental data were best fitted by the Langmuir type 2 model and the adsorption kinetic model followed a pseudo-second order type 1 model. It seems that the use of the modified maize hull to remove Cu(II) ions is very suitable, low-cost, and efficient.

Data for efficiency comparison of raw pumice and manganese-modified pumice for removal phenol from aqueous environments—Application of response surface methodology

“…Where K f and n are Freundlich constants corresponded to adsorption capacity and adsorption intensity, respectively [22] , [23] , [24] . The kinetics were investigated via adsorption of certain concentration of phenol at different contact time.…”

Kinetic and modeling data on phenol removal by Iron-modified Scoria Powder (FSP) from aqueous solutions

“…The phenol adsorption by FSP was conducted under following conditions: adsorbent dose (0.1–1 g/l), pH (3, 5, 7, 9 and 11), contacted time (20, 40, 60, 80 and 100 min) and room temperature (25 °C). The residual phenol was determined by UV/VIS spectrophotometer (Hitachi Model 100-40) at λ max 500 nm [3] , [11] , [12] .…”

Data on the alizarin red S adsorption from aqueous solutions on PAC, treated PAC, and PAC/γ≈Fe2O3

“…After separation, the dark-brown precipitate was washed several times with methanol to remove the residuals. After washing, the final product was dried at 70 °C for 24 h. After preparation of treated PAC and PAC/γ ≈ Fe 2 O 3 nanocomposite, their characterizations were determined using SEM, XRD, and BET techniques [1] , [2] , [3] , [4] , [5] , [6] , [7] , [8] , [9] , [10] , [11] , [12] , [13] , [14] , [15] , [16] .…”