the performance of olive stone activated carbon (osac) for sorption of cu2+, zn2+ and ni2+ ions was investigated via batch technique. osac materials were prepared under different physially activation conditions. olive stone waste was physically activated with n2 gas and steam gas at 900oc at 3.5h hold time (osac-3) was choice as the best one for cu2+, zn2+ and ni2+ removal. characterization for...

Chemically modified kenaf core fibres were prepared via esterification in the presence of citric acid (CA). The adsorption kinetics and isotherm studies were carried out under different conditions to examine the adsorption efficiency of CA-treated kenaf core fibres towards methylene blue (MB). The adsorption capacity of the kenaf core fibres increased significantly after the citric acid treatme...

High costs of imported bleaching earths have led to the need for alternative local sources. The effectiveness acid-activated Achalla clay in crude palm oil was examined. sample collected, sun-dried, manually ground, and activated with hydrochloric acid solution. Characterization raw samples carried out using X-ray fluorescence (XRF), Scanning electron microscopy (SEM), Fourier transform infrare...

An experimental study was conducted on the adsorption of color from biologically treated POME using palm kernel shell (PKS) and empty fruit bunches (EFB) as natural biosorbents, and activated carbon prepared from them by microwave and chemical activation with potassium hydroxide (KOH). BET surface area of all sorbents was determined and 1252 m 2 .g -1 was recorded for activated carbon prepared ...

The present work aimed to evaluate the efficiency of an agro-industrial waste biosorbent in removal real textile wastewater. A model sample with methylene blue and remazol golden yellow at equimolar proportions was prepared be treated natura, carbonized, activated lemon peel beads. Activated demonstrated superior capacity rates. Characterization analyses investigated morphology physico-chemical...

Graphene, a new member of the carbon family, was used as an adsorbent due to its exceptional capability to remove Rhodamine B (RB) and Malachite Green (MG), two organic dyes, from aqueous solutions. Adsorption kinetics of RB and MG onto graphene and adsorption capacity of the adsorbent were studied. Also the effects of parameters, including pH, contact time, temperature, and adsorbent dosag...

recently, extracts from various parts of a. occidentale had been massively investigated in themanagement and treatment of various ailments which include but not limited to diabetes, malaria,yellow fever as well as diarrhea. stem bark of anacardium occidentale was extracted with water andethanol. antioxidant activities of the extracts were using dpph. for estimation of effectivediffusivity, math...

Abstract In this study, removal of colour from wastewaters prepared synthetically using Bomaplex Blue CR-L was investigated raw and activated pumpkin seed shells by adsorption in a batch system. The effects stirring speed, adsorbent concentration, dye temperature pH on were investigated, capacities determined. addition, kinetics, isotherm coefficients, activation energies thermodynamic paramete...

A highly efficient reduction process of Cr (VI) with biochar was conducted in this paper. The results showed that nearly 100% reduced at selected reaction conditions: Dosage m (C)/m(Cr) = 3.0, temperature 90 °C, time of60 min, and concentration H2SO4 20 g/L. kinetics analysis demonstrated the fitted well pseudo-first-order model apparent activation energy calculated to be 40.24 kJ/mol. Response...