[PDF] Top 20 Autoconceito académico e auto-estima em alunos com insucesso escolar
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Removal of 2-chlorophenol from Aqueous Solution Using Silica-supported Cu(II) Catalyst
... (CWO), using pure oxygen or air for oxidant, has proven its worth for wastewater treatment, particularly when organic contaminants at low or moderate loads are ... See full document
21
Application of Azolla for 2-Chlorophenol and 4-Chrorophenol Removal from Aqueous Solutions
... Chlorophenols are an important class of aromatic pollutants in industrial wastewaters and belong to a group of common environmental contaminants(1). Chlorophenols (CP) are widely found in the environment, for example ... See full document
23
Synthesis, Characterization of Silica Nanoparticles and Adsorption Removal of Cu 2+ Ions in Aqueous Solution
... nonporous silica based on the sol-gel process was investigated. Amorphous silica nanoparticles with regular spherical structure were obtained successfully using TEOS as a ...performing silica ... See full document
65
Effect of Preparation Conditions of Activated Carbon Prepared from Rice Husk by CO 2 Activation for Removal of Cu (II) from Aqueous solution
... containing Cu (II) ions with various concentrations, which have negative effects on the environment ...of Cu (II) in drinking water to be ...was supported by the Research University ... See full document
141
Efficiency of Rice Husk for Removal of Cu(II) and Zn(II) Ions from Aqueous Solution
... of silica in its mineral ...remove Cu(II) and Zn(II) ions from aqueous solution was reported by ...removing Cu(II) and Zn(II) ions from ... See full document
86
Nitrate removal from aqueous solution using natural zeolite supported zero valent iron nanoparticles
... BET-N 2 method using a BELSORP mini II (BelJapan, Osaka, Japan) instru- ...out using Philips X’PERT MPD diffractom- eter (Cu-Kα radiation, λ = ...in solution was analyzed based ... See full document
187
Removal of Cu(II) from aqueous solution using coconut (Cocos nucifera L ) coir dust
... the removal of heavy metals from water and wastewater using chemical precipitation, physical treatment such as ion exchange, solvent extraction, reverse osmosis and adsorption ...the removal ... See full document
54
REMOVAL OF LEAD (II) ION FROM AQUEOUS SOLUTION USING VITEX NEGUNDO STEM
... arises from both natural and anthropogenic sources, and is detrimental to human health and all living ...ions from drinking water due to its supreme toxicity to our health. [2] Drinking water ... See full document
208
Diffusion-Chemisorption and Pseudo-Second Order Kinetic Models for Heavy Metal Removal from Aqueous Solutions Using Modified and Unmodified Oil Palm Fruit Fibre
... for Cu(II), Pb(II), Ni(II) and Sn(II) were carried out for each absorbent (UOPF, ...1.0MOPF) using an initial metal concentrations 50 mg/L. 50 mL of standard solution of ... See full document
10
Removal of Cu (II) Ions from Aqueous Solution by Carbon Prepared from Henna Leaves, Pungam Bark and CAC
... of removal as in Figure 1(d ) which represented the amount of the adsorbent at saturation stage, and also depends on the physical properties of the Pungam bark and Henna ...Also, from Figure 1(d), it can ... See full document
66
Removal of Lead (Ii) From Aqueous Solution Using Natural and Activated Rice Husk
... the removal of lead (II) from the aqueous ...the aqueous medium, contact time of agitation, adsorbate concentration, and adsorbent dosage were ...percentage removal of lead ... See full document
10
Effect of Preparation Conditions of Activated Carbon Prepared from Rice Husk by ZnCl 2 Activation for Removal of Cu (II) from Aqueous Solution
... One of the main aims of this study was to find the optimum process parameters which activated carbons produced should have a high RHAC yield and a high Cu (II) removal. However, it is difficult to ... See full document
13
Removal of Cu (II), Ni (II), and Co (II) ions from aqueous solution using low cost adsorbent: Isotherms, kinetics and equilibrium aspects
... the removal of some metal from aqueous ...dose, solution pH, and contacting time on the removal of Cu (II), Ni (II), and Co (II) ions had been ...of ... See full document
22
Guar gum-grafted poly(acrylonitrile)-templated silica xerogel: nanoengineered material for lead ion removal
... templated silica xero- gel H250, H500, and H900, separately, and they were tested for Pb 2+ removal (Additional file 1: Table ...Pb 2+ takes after the order: H900 > H500 > H250 > H80 ... See full document
7
Removal of Cu from aqueous solution by using adsorbent prepared from wood apple shell
... Figure 1 shows that the curve is linear up to 50 min for the Cu metal, after then it saturates. It means at starting metal ion adsorption is increasing rapidly and there is no appreciable change in the metal ion ... See full document
13
Using Eggshell in Acid Orange 2 Dye Removal from Aqueous Solution
... dye solution with concentration of 25 mg/L and adsorbent dose 50 g/L was added and in the various pHs and after contact time 90 min, the dye concentration was determined by ...dye removal percentage (R%) ... See full document
30
Study the removal of Co (II) ion from aqueous solution by using poly acrylamide
... ions from its aqueous solution were performed by using poly ...the removal of Co(II) on active sites of the polymer are spontaneous, exothermic, and positive values of entropy ... See full document
5
Degradation of 4-Chlorophenol by Catalytic Ozonation using y-Al2O3/TiO2 Supported Managanese Oxides in Aqueous Solution
... samples were characterized by the methods of Brunauer-Emmett-Teller (BET), Fourier transformed infrared (FTIR), Scanning electron microscopy (SEM), X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS), ... See full document
371
Adsorption of Cu(II) using Sauropus androgynus (L ) Merr from aqueous solution
... The conventional methods that are employed to remove heavy metals such as ion exchange, chemical precipitation, reverse osmosis and membrane separation are found to be inefficient and expensive, especially when treating ... See full document
137
Removal of Copper (II) from Aqueous Solutions using Chalk Powder
... (II) from aqueous solutions on powdered chalk has been studied as a function of different parameters : contact time (t), mass of the adsorbent (w) and initial concentration (C i ) of the ...of ... See full document
5
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