Adsorption of methylene blue (MB) dye from an aqueous solution onto hydrochars produced brown seaweed (Fucus Serratus) (FS-HC), coconut shell (CS-HC), and oak wood (Oak-HC) at different temperatures (200–250 °C) was investigated in a batch system. Response surface modelling (RSM) used to investigate the effect initial MB concentration (50–300 mg/L), contact time (0–240 min), pH (2–12) on adsorp...

Analytical isotherm equations such as Langmuir and Freundlich isotherms are widely used for modeling adsorption data. However, these isotherms are primarily useful for simulating data collected at a fixed pH value and cannot be easily adapted to simulate pH-dependent adsorption effects. Therefore, most adsorption studies currently use numerical surface-complexation models (SCMs), which are more...

In the present study, silica aerogel- egg shell was synthesized for dye removal of colored wastewater. The nano composite structure was characterized by Fourier transform infrared spectra FTIR and scanning electron microscope SEM.The ability of nano composite absorption was assessed for removal basic violet 16BV16 dye from aqueous solutions and was compared with two other adsorbents such as egg...

The present research focuses on synthesizing surface-modified egg shell powders using ultrasonic modification method for the effective adsorption of malachite green dye (MG). presence functional groups and surface morphology ultrasonic-assisted powder (UAESP) was characterized Fourier transform infrared spectrophotometer (FTIR) scanning electron microscopy (SEM) analysis, respectively. A batch ...

An agricultural waste (walnut shell) was undertaken to remove Cu(II) from aqueous solutions in batch and continuous fluidized bed processes. Walnut shell found be effective reaching 75.55% at 20 200 rpm, when pH of the solution adjusted 7. The equilibrium achieved after 6 h contacting time. maximum uptake 11.94mg/g. isotherm models indicated that highest determination coefficient belongs Langmu...

This paper investigates the potential of nano zero valent iron impregnated cashew nut shell nanoparticles (NZVI-CNS) as an effective adsorbent for the removal of phenol from aqueous solution. The effect of initial pH, adsorbent dosage, contact time and temperature were determined by batch adsorption experiments. Langmuir and Freundlich adsorption isotherm models were applied to the adsorption e...

Raw jute fabric was chemically modified with 1 % NaOH for 30 min, 17.5 5 min or 0.7 NaClO2 and 60 to study the influence of changes in chemical composition fabrics quantity carboxyl groups on biosorption capacity nickel ions. The effects contact time initial concentration ions were also investigated. obtained results revealed that can be explained by pseudo-second- order kinetic model, while ex...

background: presence of heavy metals in leachate due to the biological accumulation characteristics of these materials endangered the living creatures' health especially human. purpose of this study is to study and investigate the possibility of two metals' absorption i.e, lead and cadmium from leachate by natural zeolite clinopteliolit and increase of the ability to absorb the zeolite by modif...

Abstract Textile industries use large amounts of water and chemicals for finishing dying processes. The chemical structures dyes vary enormously, some have complicated aromatic that resist degradation in conventional wastewater treatment processes because their stability to sunlight, oxidizing agents, microorganisms. objective this research is compare the adsorption efficiency two types magneti...