[PDF] Top 20 ACCEDER al aborto impune en Costa Rica . periodo del informe: 5 meses (4 de mayo a 31 de octubre)

... the removal nickel ions from aqueous solutions on the ...to aqueous solutions, in particular the adsorbent dosage, contact time and initial Ni(II) concentrations, on the ... See full document

... on nickel removal from aqueous medium using sugarcane bagasse, an agricultural waste biomass ...investigated using Response Surface methodology (RSM) ...the removal ... See full document

... tion using the granular activated carbon are used for the removal of pesticides from aqueous solutions, but these methods have been associated with problems such as high capital and ... See full document

... turbidity removal; however, the focus in most of these has been on investigation with one-variable-at-a-time (OVAT) methodology (Kukić, Šćiban, Prodanović, Tepić, & Vasić, 2015; Wu et ...Composite ... See full document

... In this study, fig leaves, zeolite and alginate were used to prepare a biocomposite for biosorption of Pb(II) ions from aqueous solutions. Effects of various parameters on the biosorption process ... See full document

... Batch sorption experiments were carried out in 250 ml conical flasks. 150 ml of stock solution was taken, pH was adjusted and a known amount of adsorbent was weighed and placed in a shaking incubator with constant ... See full document

... In general, colors can be divided into three categories of anionic (direct, acidic and reactive dyes), cationic (basic dyes) and nonionic (Disperse Dyes and Vat Dyes). Among these dyes, azo dyes (anionic) due to the ... See full document

... We saw that pH affects the properties of absorbent. As is clear from the results, pH 6 has been selected as an optimal pH. An increase in pH causes the positively charged amino groups in the chitin to decrease in ... See full document

... the removal of organic pollutants including dyes from the water and wastewater because it is possible to recover of the adsorbate and adsorbent (12, ...to removal of dyes from aqueous ... See full document

... 2006). Ion exchange involves the exchange of metal ions from dilute solutions with the ions held by electrostatic forces on the exchange ...partial removal of certain ions (Tomko ...permeable ... See full document

... remove nickel (II) ions from waste ...of nickel carbonate 7 are available for the removal of nickel (II) ions , But these methods are either ineffective or ... See full document

... the removal efficiency of BPA increased gradually with increasing ...maximum removal efficiency was seen at pH 7, which was 85% for MWCNT and 95% for ANMWC ...values from 7 to 10, the removal ... See full document

... metals. Using the biological treatment an effective way to remove heavy metals because it is environmental friendly, economic, easy to implement and do not require the ...Cadmium removal , these adsorbents ... See full document

... The adsorption – desorption process was very important to understand the behavior of pesticide in the environment. Mobility, leaching, movement and volatilization of pesticides in soil are great factors which effect the ... See full document

... at room temperature. In each experiment, 600 mL of hydrocortisone solution (with a specific concentration) was placed in the electrochemical reactor. Concentrations of NaCl or KCl were added to the hydrocortisone ... See full document

... The removal of copper ion from waste water by TPC activated carbon is strongly affected by parameters like initial concentration, pH, adsorbent dosage and ...the experimental data for ... See full document

... Typically, ELM is prepared by homogenizing two immiscible liquids. The particles formed are dispersed in the continuous phase. Very large surface area to volume ratios is one of the advantage of ELM [23]. The fast ... See full document

... In this study, the ability of cassava (Manihot utilissima) leaves for Cd (II) removal was investigated. The effects of pH, biosorbent dosage, contact time, initial Cd (II) concentrations were also studied. The ... See full document

... contaminants from wastewater has been a cause of major ...the removal of toxic heavy metal Nickel(II) ions from the synthetic ...characterized using FTIR and XRD to study its ... See full document

... metals from contaminated waters has necessitated research interest towards the production of low cost alternatives to commercially available activated ...the removal of heavy metals from wastewater ... See full document