Adsorption Study of Reactive Dyes on Cotton Fabric in Non-Aqueous Systems

2012 ◽  
Vol 550-553 ◽  
pp. 671-675 ◽  
Author(s):  
Shi Xiong Yi ◽  
Yong Chun Dong
Keyword(s):  
Adsorption Capacity ◽  
Cotton Fabric ◽  
Reverse Micelle ◽  
Adsorption Property ◽  
Reactive Dyes ◽  
Reactive Dye ◽  
Water Soluble ◽  
Ionic Surfactant ◽  
Isotherm Equation ◽  
Langmuir Isotherm Equation

Abstract: The non-ionic reverse micelles used for dyeing cotton fabric were prepared with a non-ionic surfactant Triton X-100 (TX-100) by injecting small amount of reactive dye aqueous solution. The effect of electrolyte on the adsorption capacity of reactive dyes onto cotton fabric in this system was studied. And the adsorption properties of three water-soluble anionic azo dyes including Reactive Blue 222, Reactive Red 195 and Reactive Yellow 145 onto cotton fabric in TX-100 reverse micelle were also studied and compared. The results indicated that reactive dyes showed a better adsorption property on cotton fabric in TX-100 reverse micelle without the addition of NaCl. The adsorption of the dyes onto cotton showed better agreement with Langmuir isotherm equation. Reactive Yellow 145 with lower negative charge and higher hydrophilicity exhibited the higher adsorption capacity than the other dyes. The adsorption process follows by the chemical adsorption.

Adsorption of Acid Dyes onto Wool in TX-100 Reverse Micelles

2011 ◽  
Vol 233-235 ◽  
pp. 1366-1369
Author(s):  
Shi Xiong Yi ◽  
Yong Chun Dong
Keyword(s):  
Reverse Micelles ◽  
Dye Adsorption ◽  
Water Soluble ◽  
Molar Ratio ◽  
Ionic Surfactant ◽  
Acid Dye ◽  
Acid Dyes ◽  
Isotherm Equation ◽  
Langmuir Isotherm Equation ◽  
Ph Level

The non-ionic reverse micelles used for dyeing wool were prepared with a non-ionic surfactant Triton X-100 (TX-100) by injecting small amount of acid dye aqueous solution. And the adsorption properties of three water-soluble anionic acid dye including Mordant Black 9, Acid Black 234 and Acid Orange 156 onto wool in TX-100 reverse micelle were studied and compared. Then effect of W value (molar ratio of the injected water to TX-100) and pH level on dye adsorption was also investigated. The results indicate that Higher W value and Low pH level would increase the adsorption amount of the dye onto wool. The adsorption of the dye onto wool showed better agreement with Langmuir isotherm equation. Mordant Black 9 with lower molecular weight and one sulfonic group exhibited the higher adsorption capacity than the other dyes.

Adsorption of Cu(II) Ions from an Aqueous Solution by Cross-Linked Carboxymethyl Konjac Glucomannan

2011 ◽  
Vol 239-242 ◽  
pp. 2310-2316 ◽  
Author(s):  
Chun Mei Niu ◽  
Shao Ying Li ◽  
Dong Huang
Keyword(s):  
Adsorption Capacity ◽  
Copper Nitrate ◽  
Konjac Glucomannan ◽  
Ion Adsorption ◽  
Adsorption Time ◽  
Isotherm Equation ◽  
Langmuir Isotherm Equation ◽  
Effects Of Ph ◽  
The Relationship ◽  
Carboxymethyl Konjac Glucomannan

Crosslinked Carboxymethyl Konjac Glucomannan(CMKGM) with substitution degrees ofcarboxymethyl group（DS）0.265, 0.457 and 0.586 were prepared through reaction of monochloroacetic acid, konjac glucomannan(KGM) and epichlorohydrin and used to adsorb Cu(II) from the aqueous solutions of copper nitrate. The effects of pH, adsorbent dose, initial concentration of Cu(II), adsorption time and temperature on adsorption capacity were investigated. The results showed that adsorption capacity increased with an increasing DS of the carboxymethyl groups. Equilibrium adsorption time was 20 min or so and was independent on DS. The adsorption followed Langmuir isotherm equation. Ligand ion adsorption between carboxymethyl group and Cu(II) was thought to be predominate in the process of adsorption according to the relationship between DS and thermodynamic parameters. CMKGM can be used as cheaper and more effective adsorbents.

The Effectiveness Adsorption of Au(III) and Cu(II) Ion by Mangosteen Rind (Garcinia mangostana L.) Using Point of Zero Charge Calculation

2020 ◽  
Vol 840 ◽  
pp. 10-15
Author(s):  
Dian Hana Saraswati ◽  
Mellia Harumi ◽  
Triyono Triyono ◽  
Sri Sudiono
Keyword(s):  
Adsorption Capacity ◽  
Ph Value ◽  
Point Of Zero Charge ◽  
Garcinia Mangostana ◽  
Isotherm Equation ◽  
Solid Adsorbent ◽  
Zero Charge ◽  
Before And After ◽  
Langmuir Isotherm Equation ◽  
Gold Metal

Adsorption of Au(III) and Cu(II) by mangosteen rind adsorbent had been carried out. Mangosteen rind has several functional groups including –OH phenolics, ‒C=C‒ aromatics, and ethers. Dried mangosteen rind which was obtained from maceration was used to determine Point of Zero Charge (PZC). The most effective pH adsorption was determined by mixing adsorbent with Au(III) or Cu(II) solutions with various pH. The adsorption capacity was affected by the interaction between adsorbent and adsorbate. The solid adsorbent before and after interaction was characterized by FTIR, XRD, and microphotography. The PZC pH value of adsorbent was 3.7 while the optimum pH for Au(III) and Cu(II) were at pH 2 and pH 5, respectively. The adsorption capacity (qmax) value was 333.33 mg/g by following the Langmuir isotherm equation. The crystalline structure of adsorbent was analyzed using XRD and gave 4 peaks characteristics of gold metal on 2ϴ = 38º, 44º, 64º, and 77º after adsorption which indicated the reduction of Au(III) ions into Au(0).

Study of hydrolytic kinetics of vinyl sulfone reactive dye in siloxane reverse micro-emulsion

2016 ◽  
Vol 87 (19) ◽  
pp. 2368-2378 ◽  
Author(s):  
Liujun Pei ◽  
Juanjuan Liu ◽  
Guoqiang Cai ◽  
Jiping Wang
Keyword(s):  
Reactive Dyes ◽  
Free Water ◽  
Cellulose Fiber ◽  
Reactive Dye ◽  
Hydrolysis Reaction ◽  
Hydrolysis Rate ◽  
Ionic Surfactant ◽  
Vinyl Sulfone ◽  
Fixation Rate ◽  
Micro Emulsion

Reactive dyes maintain a long reaction with fiber and show a high dye uptake and fixation rate, and effectively decrease the dyeing waste water in siloxane reverse micro-emulsion. However, little research has been carried out into the hydrolysis reaction of reactive dyes in reverse micro-emulsion. In this study, Reactive Blue 19 was selected as a model vinyl sulfone reactive dye to study its hydrolysis in siloxane reverse micro-emulsion. The hydrolysis reaction was analyzed using high performance liquid chromatography. The results show that the hydrolysis rate of vinyl sulfone dyes in siloxane reverse micro-emulsion was slower than that in a traditional bath. Influences due to the ratio of aqueous dye solution to siloxane, non-ionic surfactant, cellulose fiber, and temperature on the hydrolysis reaction of vinyl sulfone reactive dye were also researched. The results show that with more aqueous solution emulsified in the siloxane media, the hydrolysis reaction of vinyl sulfone dye is faster. Reactive dyes were emulsified into a water micro-environment with non-ionic surfactant, which formed reverse micro-emulsion, and decreased the content of free water; this further influenced the hydrolysis of reactive dye.

Preparation and Chelating Properties of Polystyrene Modified Ethoxycarbonyl Thiourea Resin

2011 ◽  
Vol 239-242 ◽  
pp. 781-785 ◽  
Author(s):  
Shuai Wang ◽  
Hong Zhong ◽  
Liu Yin Xia ◽  
Zhong Nan Wang ◽  
Qian Zhang
Keyword(s):  
Adsorption Isotherm ◽  
Adsorption Capacity ◽  
Maximum Adsorption Capacity ◽  
Polymer Grafting ◽  
Isotherm Equation ◽  
Adsorption Capacities ◽  
Adsorption Data ◽  
Separation Factors ◽  
Langmuir Isotherm Equation ◽  
Freundlich Adsorption Isotherm

A novel polystyrene modified ethoxycarbonyl thiourea resin(PSETU) was synthesized by polymer grafting of aminated polystyrene and ethoxycarbonyl isothiocyanate. The adsorption capacities of PSETU follow the order: Au(III) > Cu(II) > Zn(II) > Ni(II) > Fe(III) > Ca(II) ≈ Mg(II). The adsorption capacity for Au(III) increases with the increase of contact time, temperature and initial concentration of Au(III). The adsorption data fit Boyd’s diffusion equation of liquid film, Langmuir adsorption isotherm and Freundlich adsorption isotherm. The maximum adsorption capacity of PSETU calculated by Langmuir isotherm equation is 3.485 mmol/g, and the separation factors of PSETU for Au(III)-base metal ions are above 380. According to XPS results, the functional atoms of PSETU coordinate with Au(III) during the adsorption process.

scholarly journals MODEL ISOTERM FREUNDLICH DAN LANGMUIR OLEH ADSORBEN ARANG AKTIF BAMBU ANDONG (G. verticillata (Wild) Munro) DAN BAMBU ATER (G. atter (Hassk) Kurz ex Munro)

2017 ◽  
Vol 2 (1) ◽  
pp. 17 ◽  
Author(s):  
Murtihapsari Murtihapsari ◽  
Bertha Mangallo ◽  
Dini Dwi Handyani
Keyword(s):  
Adsorption Capacity ◽  
Activated Charcoal ◽  
Langmuir Isotherm ◽  
Physical Adsorption ◽  
Regression Coefficients ◽  
Maximum Adsorption Capacity ◽  
Optimum Conditions ◽  
Isotherm Equation ◽  
Freundlich Isotherms ◽  
Langmuir Isotherm Equation

Freundlich and Langmuir Isotherms Model by Active Chorcoal Adsorbent Bamboo Andong  (G. verticillata (Wild) Munro) and Bamboo Ater (G. atter (Hassk) Kurz ex Munro)          Diazinon insecticide adsorption by two types of adsorbent, namely activated charcoal bamboo andong (G. verticillata (Wild) Munro) and bamboo ater (G. atter (Hassk) Kurzex Munro) at optimum conditions determined the maximum adsorption capacity of both types of adsorbent. Data analysison the effect of concentration on the adsorption capacity was used Langmuir and Freundlich isotherms equation. It was obtained. That  the curve of adsorption isotherms of the Langmuir isotherm better modeled with linear regression coefficients were relatively more approach 1 is R2 = 0,996 for both types of adsorbents. Langmuir isotherm equation obtained from adsorpsi maximum capacity of activated charcoal bamboo andong (G. verticillata (Wild) Munro) of  4.630 mg/g (1,433.10-5 mol/g) with K = 0,332 (Kmol/L)-1 and Eads at -2,750 kJ/mol, while the activated charcoal bamboo ater (G. atter (Hassk) Kurzex Munro) produce the maximum adsorption capacity of 1,786 mg/g (5,868.10-6 mol/g) with K = 0,202 (Kmol/L)-1 and Eads = -3,898 kJ/mol, so the adsorption of both types of adsorbents indicated experiencing a physical adsorption (physisorption / fisisorpsi).Keyword: G. verticillata (Wild) Munro, G. atter (Hassk) Kurz ex Munro, Adsorption, Diazinon,  actived charcoal  ABSTRAK          Adsorpsi insektisida diazinon oleh dua jenis adsorben, yaitu arang aktif bambu andong (G. verticillata (Wild) Munro) dan bambu ater (G. atter (Hassk) Kurz ex Munro) pada kondisi optimum bertujuan untuk menentukan kapasitas adsorpsi maksimum dari kedua jenis adsorben. Analisis data pengaruh konsentrasi terhadap kapasitas adsorpsi digunakan persamaan isoterm Langmuir dan Freundlich. Berdasarkan data yang diperoleh, kurva isoterm adsorpsi lebih mengikuti model isoterm Langmuir dengan koefisien regresi linier yang relatif lebih mendekati 1 yaitu R2 = 0,996 untuk kedua jenis adsorben. Dari persamaan isoterm Langmuir diperoleh kapasitas adsorpsi maksimum arang aktif bambu andong (G. verticillata (Wild) Munro) sebesar 4,630 mg/g (1,433.10-5 mol/g) dengan K = 0,332 (Kmol/L)-1 dan Eads sebesar -2,750 kJ/mol, sedangkan arang aktif bambu ater (G. atter (Hassk) Kurz ex Munro) menghasilkan kapasitas adsorpsi maksimum sebesar 1,786 mg/g (5,868.10-6 mol/g) dengan K = 0,202 (Kmol/L)-1 dan Eads = -3,898 kJ/mol, sehingga adsorpsi kedua jenis adsorben diindikasikan mengalami adsorpsi secara fisik (physisorption/ fisisorpsi).Kata kunci : G. verticillata (Wild) Munro, G. atter (Hassk) Kurz ex Munro Adsorpsi, Diazinon, Arang aktif

scholarly journals Studies on dyeing properties of chitosan modified cellulosic fiber

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Asaye Dessie ◽  
Bethlehem Ashenafi ◽  
Helen Berhane ◽  
Hana Gashawbeza ◽  
Meron Tesfaye
Keyword(s):  
Surface Modification ◽  
Cotton Fabric ◽  
Reactive Dyes ◽  
Reactive Dye ◽  
Fish Scale ◽  
Fastness Properties ◽  
Dyeing Properties ◽  
Cellulosic Fiber ◽  
Conventional Sample ◽  
Better Than

This paper presents the possibility of salt free dyeing of cotton fabric with reactive dye by treating the cotton with chitosan from fish scale and used as a salt for dyeing of cotton with reactive dye. Cellulosic fiber acquires negative charge in aqueous medium and thus repels negatively charged dye anion during dyeing. Such repulsion between fibre and dye is offset by using large quantity of salt in dye bath, particularly for reactive dyes. A low dye bath exhaustion also leads to low dye fixation of reactive dyes on cotton. Therefore the discharged wastewater from dye house creates avoidable environmental threats due to very high dye concentration. Hence, surface modification of cotton to increase dye-fibre interaction is thus the best route to overcome the lack of affinity of cotton to reactive dyes making salt-free reactive dyeing. In this investigation an attempt was made to modify cotton with chitosan extracted from fish scales. The chitosan modified cotton was dyed with reactive dye and compared with the conventional dyed cotton. The color strength of the modified cotton fabric was better than that of conventional sample which is 18.88 and 18.02 respectively. Better fastness properties were experienced in treated cotton sample than the ordinary sample. The fastness properties obtained were better than the conventional sample. From this investigation it was revealed that surface modification of cotton by treatment with chitosan provided better dyeing properties and it can be the best possibility for salt free dyeing of cotton.

Kinetic Study on Phosphorus Adsorption, Phosphorus Desorption, Nitrification, and Denitrification by Using Mineralized Refuse

2011 ◽  
Vol 340 ◽  
pp. 461-466
Author(s):  
Ding Long Li ◽  
Jing Si Tian ◽  
Hou Hu Zhang ◽  
Yi Min Zhang ◽  
Yue Xiang Gao
Keyword(s):  
Adsorption Capacity ◽  
Langmuir Isotherm ◽  
Maximum Adsorption Capacity ◽  
Phosphorus Adsorption ◽  
K Value ◽  
Isotherm Equation ◽  
Zero Order Kinetics ◽  
Langmuir Isotherm Equation ◽  
Nitrification And Denitrification ◽  
Phosphorus Desorption

The mineralized refuse has a well particle size distribution and is similar asirregularly polyhedron with the high contents of Fe, Al, and Ca, which might be thephosphorus pool. The absorption and desorption of phosphorus, nitrification, and denitrification in the mineralized refuse and clay has been investigated by using batch incubation, respectively. The variation of phosphorous adsorption in the mineralized refuse and clay is fitted the Langmuir isotherm equation. The maximum phosphorus adsorption capacity in the mineralized refuse calculated based on the Langmuir isotherm equation is 2914 mg kg-1. Both the maximum adsorption capacity and adsorption rate of phosphorus in the mineralized refuse are over 2.0-fold more than that of the clay. The desorption rate of phosphorus in the mineralized refuse is only about 30%. NH4+-N contents in the mineralized refuse samples fell from 129 mg N kg-1 to 83.0 mg N kg-1 within the first 24 h during the nitrification process. Accordingly, the NO3--N content in the mineralized increased from 137 mg N kg-1 to 170 mg N kg-1. While the decrease of NH4+-N contents and the increase of NO3--N contents in the clay was only 1/2 and 1/6 as large as in the mineralized refuse, respectively. During the denitrification process, the K-value of the fitted zero-order kinetics for NO3--N denitrification in the mineralized refuse was 6.5-fold higher than in the clay.

Study on the Adsorption of Mixed Cd(II) and Pb(II) Ions by N,O-Carboxymethyl-Chitosan

2011 ◽  
Vol 236-238 ◽  
pp. 2523-2528
Author(s):  
Shan Shan Cheng ◽  
Chao Hua Zhang ◽  
Xi Hong Yang ◽  
Wan Cui Xie
Keyword(s):  
Metal Ions ◽  
Adsorption Capacity ◽  
Metal Ion ◽  
Ph Value ◽  
Carboxymethyl Chitosan ◽  
Effect Of Temperature ◽  
Mixed Solution ◽  
Isotherm Equation ◽  
Mixed Aqueous Solution ◽  
Langmuir Isotherm Equation

TheN,O-carboxymethyl-chitosan (N,O-CMC) was used to investigate the adsorptions of two metals of Cd(Ⅱ) and Pb(Ⅱ) ions in an mixed aqueous solution. The effects on adsorption capacities such as pH value, temperature, adsorbent dose and initial metal ion concentrations were investigated, and the dialysis method was applied to separate the materials after adsorption. The results revealed that the better adsorption ofN,O-CMC for Cd(Ⅱ) and Pb(Ⅱ) ions at the pH 7-8; the effect of temperature on the adsorption was not significant; the absorption of Cd(Ⅱ) and Pb(Ⅱ) ions was enhanced with the increase ofN,O-CMC amount; the adsorption capacity increasesed with the addition of the concentration of initial metal ions in the aqueous phase. The adsorption of Pb(Ⅱ) ion in Cd-Pb mixed solution on theN,O-CMC was well followed as the Langmuir isotherm equation under the concentration range studied, and Cd(Ⅱ) ion was corresponding to Langmuir adsorption equation in 100-200 mg/L and 200-500 mg/L, respectively. Conclusion:N,O-CMC was suitable for adsorbent to removal Cd(Ⅱ) and Pb(Ⅱ) ions, but it can selectively adsorption ions from the mixed solution, the adsorption capacity (Qm) for two metal ions was as follows: Pb(Ⅱ) > Cd(Ⅱ).

Synthesis of a novel tetrakisazo navy-blue reactive dye based on DSD acid and its synergistic blackening property

2015 ◽  
Vol 44 (6) ◽  
pp. 386-391 ◽  
Author(s):  
Aiqin Gao ◽  
Hongjuan Zhang ◽  
Kongliang Xie
Keyword(s):  
Cotton Fabric ◽  
Research Work ◽  
Reactive Dyes ◽  
Reactive Dye ◽  
Original Research ◽  
Reactive Black 5 ◽  
The Novel ◽  
Fastness Properties ◽  
Content Type ◽  
Absorbance Spectra

Purpose – The purpose of this paper is to synthesise a tetrakisazo reactive dye and to characterise its dyeing property to meet the demand for better black reactive dyes. Design/methodology/approach – The novel tetrakisazo navy-blue reactive dye based on 4,4′-diaminostilbene-2,2′-disulphonic acid was designed and synthesized. The dyeing behaviour of it on cotton fabric was discussed. The synergistic blackening effect and absorbance spectra were investigated by absorbance and reflectance spectra, K/S and colorimetric data. Findings – The exhaustion and fixation of the designed reactive dye were higher than 20 per cent than those of the commercial reactive dye, CI Reactive Black 5. The novel reactive dye has complementary with Reactive Red SPB and Reactive Yellow C-5R in absorbance spectra from 360 to 700 nm. Three reactive dyes had synergistic effect in colour deepening properties. The dyed cotton fabric possessed high K/S value and low reflectance in the whole visual spectrum range from 360 to 700 nm. Practical implications – Comparison with the commercial Reactive Black DN-RN, the blackness of the dyed fabrics with the mixture dyes was greatly improved and the fastness properties on cotton fabrics were also good. Originality/value – The paper is an original research work. Because the mixture dyes had better blackness and good fastness properties, it would have wide application in the dyeing of cotton fabric.

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