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Ni and Zn modified acid activated montmorillonite clay for

 · Abstract The present work aims to investigate efficiency of zinc and nickel modified acid activated montmorillonite clay to remove carbol fuchsin dye from aqueous solution. The synthesized nanocomposites were characterized by TEM SEM-EDAX XRD FT-IR and UV–Vis techniques. The adsorption of dye increased with increase in pH obeying pseudo-second-order rate kinetics and

Lignocellulose Activated Clay Nanocomposite with

 · polymers Article Lignocellulose Activated Clay Nanocomposite with Hierarchical Nanostructure Enhancing the Removal of Aqueous Zn(II) Xiaotao Zhang 1 y Yinan Hao 2 y Zhangjing Chen 3 Yuhong An 2 Wanqi Zhang 2 and Ximing Wang 2 1 College of Science Inner Mongolia Agricultural University Hohhot 010018 China lianzixiaotao 163 2 College of Material Science

Activated Carbon and Clay Minerals for the Sorptive

 · This study assessed the feasibility of utilizing activated carbon and clay minerals for treating water impacted with the bittering agent denatonium benzoate (DB). Our specific study objectives were to 1) evaluate denatonium ion sorption to smectite clay minerals (bentonite and hectorite) and activated carbon (powdered and granular) at constant pH and ionic strength and 2) examine the impact of

EPA1Acid activated clay for treating aromatic

The present invention provides an activated clay for refining aromatic hydrocarbons such as BTX (benzene toluene xylene) etc. satisfying the requirements of both excellent life and excellent side-reaction-preventing property. The activated clay for treating aromatic hydrocarbons is obtained by treating dioctahedral smectite clay minerals with an acid so as to possess a BET specific surface

(PDF) Characterization Acid Activation and Bleaching

This result is in agreement with 18 24 30 31 Table 3 below shows the effect of contact time on the bleaching efficiency of Palm oil at different acid concentrations of the activated clay and at

Adsorption of Methylene Blue on raw and activated Clay

 · two forms of this clay are used. The raw clay (RC) without pre-treatment and the activated clay (AC)form by sulfuric acidic sieved to obtain a particle size of 80 µm are considered. 2.3. Activation of clay It is well known that useful modifications of the adsorption properties of clay minerals can be achieved by acid activation 24-26 .

1USE OF ACTIVATED CLAYS IN THE REMOVAL OF DYES

1USE OF ACTIVATED CLAYS IN THE REMOVAL OF DYES AND SURFACTANTS FROM TANNERY WASTE WATERS A. G. Espantaleóna J.A. Nietoa M. Fernándezb A. Marsalc a Curtidos Mare Nostrum S.L. Apartado 43 12600 Vall d Uixó (Castellón) b Universidad de Almería Departamento Química Inorgánica Ctra. Sacramento s/n 04120 La Cañada Almería c Departamento Ecotecnologías CID

ANALYSIS OF NITRIC ACID ACTIVATED UKPOR KAOLIN

 · 250 ml beaker and 2 g of the activated clay samples were also added. The mixture of clay and oil were placed in a water bath and heated to a temperature of 80 0C for 30 minutes under continuous stirring. At the end of the reaction the slurry formed was filtered through a dry filter paper. The bleaching capacity of the acid activated

Activated clay prepared by waste acid recycling

We determined the optimum activation conditions and formation mechanism of activated clay prepared using a waste acid recycling method. The aim of this study was to determine the effect of the processes used on the quality of the activated clay. Key objectives were to optimize operating conditions and to determine the mechanism of acid treatment.

Kinetic Modelling of the Adsorption Treatment of Waste

 · Lubricating Oil using Activated Ukpor Clay (Bentonite) M.K. Oduola1 O.O. Okwonna2 Department of Chemical Engineering University of Port Harcourt Port Harcourt Nigeria Abstract—The re-refining of waste lubricating oil using activated Ukpor clay as an adsorbent was investigated. Clay activation was performed using sulphuric acid (H 2 SO 4

Sorption Performance of Activated Nkaliki Clay in

 · In fact it has been observed that the number of acid centers significantly increases in acid activated clay samples compared with natural samples. Kumar et al. 18 reported that Bronsted acid sites are generated by exchange of inter-lamellar cations with protons and Lewis acid sites correspond to Mg2 and Al3 present at the edges of

Chapter 7.1 Acid Activation of Clay MineralsScienceDirect

 · The optimum level of acid treatment corresponds to the removal of between 19 and 35 of the octahedral cations. However these values depend on the clay mineral. The pillared acid activated clay minerals have significantly higher pore volume and acidity than conventional PILC but similar basal spacings surface areas and thermal stability.

Determination of acid–base properties of HCl acid

The surface acidity of raw and acid activated palygorskite clay were studied by acid-base potenti-ometric titration. The Gran plot method was applied for the hydroxide titration and the total surface site (Hs) and the average number of protons reacted per surface site (Z) of palygorskite samples at a given ionic strength were calculated.

Characterization of activated bentonite clay mineral and

 · The dried bentonite clay (25 g) was soaked in 400 mL solution containing Na-Ac (0.1 N) and Ac-Ac adjusted to pH ≈ 5.0. The mixture was stirred for 12 h at 70 ± 1 °C with magnetic stirring followed by overnight stirring at room temperature. During stirring 100 mL

Acid activated clays Materials in continuous demand

 · The resulting organo-acid activated clays prepared after reaction with C16TMA hydroxide solution contained between 0.80 and 0.70 mmol/g of surfactant and exhibited interlayer spacing of 2.20 nm and 1.80 nm independent of the initial concentrations of the organic molecules. These organoclays were stable in acidic and basic solutions.

Characterization Acid Activation and Bleaching

 · Bleaching clays normally contain 10–18 moisture. If the clay is completely dried prior to use its structure collapses causing reduction in the bleaching power because of decreased surface area. In addition to these adsorptive capacity of acid activated clay is reduced if clay is added to hot oil.

Clay Characterization and Optimisation of Bleaching

 · apparatus (Model YX932D) with filtration set. The process was carried out for both NaOH and KOH activated clay. 3.5. Determination of Physicochemical Properties of Bleached Oil 3.5.1. Acid Value The acid value is the number of mg of potassium hydroxide required to neutralize the free acid in 1 g of the sub-stance.

Characterization of activated bentonite clay mineral and

 · Characterization of activated bentonite clay mineral and the mechanisms underlying its sorption for ciprofloxacin In the present study the potential of raw (NB) and acid-activated bentonite (AAB) clay for ciprofloxacin (CIP) removal from aqueous solution was investigated. Although the removal solution was gradually added to the mixture

Characterization of activated bentonite clay mineral and

 · After the acid activation the analysis data showed a significant change in the chemical composition in modified bentonite clay compared to the raw bentonite clay. The acid activation of bentonite caused an increase in the amount of Si 4 and Ti 4 this increase could be attributed to the remobilization of cations in the octahedral or

Clay Characterization and Optimisation of Bleaching

 · The clay sample was wet sieved to remove impurities. The sieved clay (100 g) was dispersed in 60 ml of distill-ed water to form slurry. The slurry was pre heated to 60˚C for 5minutes. 100 ml of alkaline 0.5 M NaOH and 5 M KOH was added to the pre heated slurry and the mixture heated to 90˚C for 80 mins. The slurry formed was dried conventionally in a drier to reduce the moisture content. Drying was done at a temperature of 70˚C for 12 hours. The dried clay was grinded to the appropriate size for use as bleaching clay.

Activated Carbon and Clay Minerals for the Sorptive

 · This study assessed the feasibility of utilizing activated carbon and clay minerals for treating water impacted with the bittering agent denatonium benzoate (DB). Our specific study objectives were to 1) evaluate denatonium ion sorption to smectite clay minerals (bentonite and hectorite) and activated carbon (powdered and granular) at constant pH and ionic strength and 2) examine the impact of

SciELOBrasilThe increase of surface area of a

For this a small quantity of clay powder was dispersed in acetone and dropped on a copper grid coated with formvar film. The response variable in this study was the BET surface area measured in a Micromeritics equipment model ASAP 2020 and the results were

Activated clay particles having similar shapes method for

What is claimed is 1. Activated regular clay particles comprising acid-treated dioctahedral smectite clay minerals wherein the regular particles have a volume-based median diameter (D 50) of from 10 to 60 μm as found by a laser diffraction method have a porous volume in pores having radii of 1000 to 70 000 angstroms of from 0.63 to 1.00 cc/g as measured by a mercury intrusion porosity

Characterization Acid Activation and Bleaching

 · Acid activation caused an increase in moisture content to occur from 14.2 in raw clay to 17.4 in 3 M HCl activated clay representing an increase of 3.2 . The moisture content for the clay lies within 10–18 recommended by Wiedermann 5 as being appropriate to ensure that the clay structure does not buckle and loses its adsorptive capacity.

Method of activation of clay and activated clayHojun

 · A method for activating smectite clays to give swelling power and/or dispersibility in an aqueous electrolyte solution and resulting activated smectite clays are disclosed the method comprising previously adding an adequate amount of an aprotic polar solvent having a higher relative permittivity than those of alcohols (e.g. N N-dimethylformamide N N-dimethylacetamide ethylene carbonate

Adsorption of tannic acid humic acid and dyes from water

In this study activated clay was added in chitosan slurry to prepare composite beads. The adsorption isotherms and kinetics of two organic acids (tannic acid humic acid) and two dyes (methylene blue reactive dye RR222) using composite beads activated clay and chitosan beads were compared.

Activation of Iraqi Bentonite Powder with H2SO4 and its

 · sample consisted of substantial amount of predominantly quartz feldspar calcite and Dolomite. The XRD pattern of raw clay and activated clay is shows in Figure (2). This result shows a structural change caused by high percentageof (70 acid activation). The intensity

Adsorption from Solution Water Purification Acid

 · in heats and entropy of adsorption indicate physisorption. The acid activated clay was found to be an initially fast and efficient remover of methyl orange from water which later slowing down during the second equilibrium. Keywords Adsorption from Solution Water Purification Acid Activated Clay

Adsorption of tannic acid humic acid and dyes from water

 · Chitosan flake (1 g) and activated clay (1 g) were dissolved in 1 mol L −1 acetic acid (100 ml) and were agitated by a disperser (IKA Ultra-Turrax T25 basic) at 24 000 rpm for 10 min.

Preparation and Characterization of Activated Sericite

After that thermal-treated sericite (S1) was activated with sodium fluosilicate and nitric acid whose effects were characterized by X-ray diffraction (XRD) analysis chemical analysis and zeta electric potential analysis. The dissolving-out amount of Al3 of acid-treated product (S2) reached circa 65 mg/g at the optimal processing conditions.

Performance of an Argentinian acid-activated bentonite in

As expected the increase in treatment time and acid concentration resulted in a more effective attack on the structure as observed by the decrease in the relative amount of cations belonging to the octahedral sheet and by the increase in the Si 4 /(Al 3 Fe 2 /3 Mg 2 ) ratio.. Figure 2 shows the infrared spectra of the natural and acid-activated bentonite.

Acid Activation of Clay MineralsScienceDirect

 · One of the most common chemical modifications of clay minerals used for both industrial and scientific purposes is their acid activation. This consists of the reaction of clay minerals with a mineral acid solution usually HCl or H 2 SO 4.The main task is to obtain partly dissolved material of increased specific surface area (SSA) porosity and surface acidity (Komadel 2003 Carrado and