In this laboratory scale study, impregnated almond shell activated carbon was used as adsorbent to investigate its feasibility for nitrate adsorption from aqueous medium. The effects of activated carbon dosage and contact time have been examined in batch experiments. Experimental data show that impregnated activated carbons by Fe0, Fe2 (SO4)3, and FeSO4 were more effective than virgin almond ac...

The use of commercial activated carbon (AC) to remove organic micropollutants from aqueous solution is expensive and unsustainable. In this study, coconut shell (CSAC) was synthesized applied for the removal ibuprofen, ketoprofen naproxen solutions. effects carbonization acid activation on CSAC were studied using Fourier-transform infrared spectroscopy, scanning electron microscope, proximate u...

Activated carbon derived from biomass waste, namely palm shell, was evaluated as a potential adsorbent for the removal of Reactive Black 5 dye (RB5) from an aqueous solution. This work focused on the equilibrium isotherms and the kinetics of the adsorption process. Batch adsorption tests were conducted to determine the effects of various parameters, such as contact time, RB5 concentration, adso...

Batch adsorption experiments were carried out for the adsorption of cationic dye from aqueous solution onto composite activated carbon. The composite activated carbon was prepared from brewer’s spent grain and sea bean shell at a ratio of 1:1. The equilibrium studies were done at different concentrations and temperatures. The equilibrium data were fitted to Langmuir, Freundlich, Dubinin-Radushk...

At this work, removal of Pb (II) using Lawsonia inermis (Henna) was studied. In recent years, use of low price adsorbent is taken into consideration. Adsorption experiments were performed in batch system at ambient temperature (25℃). The influence of some parameters such as time, initial metal concentration, pH and adsorbent dose were investigated. The optimum conditions was obtained at pH of 6...

Heavy metal contamination is a primary concern worldwide and it discharged from the industrial wastewater to large amount of heavy receiving environments. In recent years, effective use agricultural by-products definitely major challenge in waste management. The fact that residues are more easily obtained cheaper than commercial adsorbents makes attractive. this study, removal zinc using natura...

This work explored the technical feasibility of using crab shell (CS) as a promising, low-cost biosorbent to individually and simultaneously remove Zn2+ Ni2+ from aqueous solutions. It was found that in both monometallic bimetallic systems, biosorption by CS strongly dependent on solution pH, with optimum occurring at pH 6.0 for heavy metals. The obtained isotherms onto systems demonstrated has...

Abstract Study question Is the behavior of second polar body (PBII) associated with subsequent human embryonic development? Summary answer Human zygotes morphologically static PBII showed significantly higher rates good quality embryos and utilization than showing various behaviors. What is known already In recent years, time-lapse incubators have become widely available, enabling continuous ob...

Results of a systematic study on the Ag, Cd and Pb ions sorption characteristics and kinetic properties of an unconventional material produced by introducing sulphydryl functional groups into natural hemp fibers are presented and discussed. The equilibrium data are analyzed using the Langmuir and Freundlich isotherm models. The monolayer sorption capacity of modified hemp is 10.75, 14.05 and 23...