scholarly journals MODELING AND EXPERIMENTAL RESEARCH OF THE PROCESSES OF FORMATION OF RADIATION DAMAGE IN THE INTERACTION OF GAMMA QUANTUM FLOWS AND RELATIVISTIC ELECTRON BEAMS WITH SOLUTIONS OF ORGANIC DYES

2021 ◽  
pp. 42-45
Author(s):  
S.P. Gokov ◽  
Yu.G. Kazarinov ◽  
S.A. Kalenik ◽  
V.Y. Kasilov ◽  
V.V. Kantemirov ◽  
...  
Keyword(s):  
Experimental Data ◽  
Aqueous Solution ◽  
Methylene Blue ◽  
Experimental Research ◽  
Organic Dyes ◽  
Electron Beams ◽  
Gamma Quantum ◽  
Organic Dye ◽  
Dye Molecules ◽  
Relativistic Electron Beams

The processes of interaction of an aqueous solution of an organic dye: methylene blue (MB)  C16H18N3SCl with gamma quanta and electrons were investigated. A model has been developed and the passage of electrons with an energy of 15 MeV through tungsten layers with a thickness of 1…8 mm has been simulated. Based on the simula-tion results, a number of experiments were carried out. Analysis of the calculated and experimental data showed that one incident electron destroys 4 times more dye molecules than one incident gamma quantum.

scholarly journals Bioremediation of organic dyes using combination of plants ash

2019 ◽  
Vol 7 (2) ◽  
pp. 240-246
Author(s):  
Kaur Harpreet ◽  
Kaur Harpreet ◽  
Vandana Kamboj ◽  
Vandana Kamboj
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Methyl Orange ◽  
Crystal Violet ◽  
Congo Red ◽  
Organic Dyes ◽  
Low Cost ◽  
Sem Image ◽  
Orange Peels

Water is the most crucial thing to mankind and so its contamination by various agencies is posing a threat to the natural balance. So, in the present work, the efficiency of various adsorbents derived from plant waste, to remove different dyes from aqueous solution was evaluated. Parameters for study were contact time, concentration and pH. Various combinations of plant ashes were used for the study. It was found that adsorbent prepared from the combination of orange peels, pomegranate and banana peels ashes, exhibited good adsorption capacity for methylene blue, congo red and crystal violet. All these dyes were completely removed from the aqueous solution while methyl orange was not removed. Congo red was removed completely within 40 min of contact with the adsorbent while methyl orange took 3 hrs to be removed to the extent of 48% only. The adsorption coefficient of congo red was found to be 2.33 while value for methylene blue and crystal violet was 1 and 1.66 respectively. The characterization of adsorbent was done by Scanning Electron Microscopy and IR spectroscopy. SEM image revealed the surface of adsorbent to be made of differential pores. From the results it became evident that the low-cost adsorbent could be used as a replacement for costly traditional methods of removing colorants from water.

scholarly journals Study on the adsorption of methylene blue from aqueous solution using hydrogel glucomannan/graphene oxide

2021 ◽  
Vol 10 (1) ◽  
pp. 59-66
Author(s):  
Son Le Lam ◽  
Phu Nguyen Vinh ◽  
Hieu Le Trung ◽  
Tan Le Thua ◽  
Nhan Dang Thi Thanh ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Graphene Oxide ◽  
Adsorption Capacity ◽  
Organic Dyes ◽  
Dye Adsorption ◽  
Order Kinetic ◽  
Equilibrium Data ◽  
Order Kinetic Model ◽  
Pseudo Second Order

Glucomannan/graphene oxide (GM/GO) hydrogel was synthesized by using calcium hydroxide as the crosslinker. The synthesized material was characterized by using IR, XRD, SEM, EDX and RAMAN technology. The composite hydrogel was used for removal of organic dyes from aqueous solution. The results showed that the GM/GO hydrogel had a porous structure and a high adsorption capacity toward methylene blue (MB). The pseudo-second-order kinetic model could fit the rate equation of MB adsorption onto the GM/GO hydrogel. The adsorption of MB onto GM/GO hydrogel was a spontaneous process. In addition, the equilibrium adsorption isotherm data indicated that equilibrium data were fitted to the Langmuir isotherm and the maximum dye adsorption capacity was 198,69 mg.g-1. Moreover, the hydrogel was stable and easily recovered and adsorption capacity was around 97% of the initial saturation adsorption capacity after being used five times.

scholarly journals BIOSORPTION OF METHYLENE BLUE BY WASTE APRICOT SHELLS FROM FOOD INDUSTRY

2018 ◽  
Vol 4 (7) ◽  
Author(s):  
Tatjana Šoštarić ◽  
Marija Petrović ◽  
Jelena Milojković ◽  
Jelena Petrović ◽  
Marija Stanojević ◽  
...  
Keyword(s):  
Experimental Data ◽  
Aqueous Solution ◽  
Methylene Blue ◽  
Food Industry ◽  
Fruit Juice ◽  
Waste Waters ◽  
Batch Experiments ◽  
Biosorption Capacity ◽  
Biosorption Process ◽  
Monolayer Adsorption

In this paper, the removal of methylene blue (MB) from aqueous solution by biosorption ontoapricot shellshas been investigated through batch experiments. Apricot shells were chosen as alocally available and abundant waste from fruit juice industry. Methylene blue is common pollutantof waste waters from textile industry.The influence of initial MB concentration on biosorption process has been studied. Theexperimental data have been analysed using Langmuir and Freundlichisotherm models. TheLangmuir model better fits to experimental data, which explain monolayer adsorption. Maximumbiosorption capacity is 24,31 mg/g. A comparison of the biosorption capacity of waste apricot shellswith biosorption capacities of similar adsorbents previously investigated indicates that apricotshells could be a promising biosorbent for removal of MB from aqueous solution.

scholarly journals The Effect of Ionic Charge on the Adsorption of Organic Dyes onto Titanate Nanotubes

2010 ◽  
Vol 63 (2) ◽  
pp. 270 ◽  
Author(s):  
Dmitry V. Bavykin ◽  
Katherine E. Redmond ◽  
Benjamin P. Nias ◽  
Alexander N. Kulak ◽  
Frank C. Walsh
Keyword(s):  
Aqueous Solution ◽  
Organic Dyes ◽  
Dye Adsorption ◽  
Titanate Nanotubes ◽  
Charged Surface ◽  
Dye Molecules ◽  
Ionic Charge ◽  
Eriochrome Black T ◽  
Opposite Trend ◽  
Positively Charged

The adsorption of dye molecules from aqueous solution onto the surface of titanate nanotubes (which have been synthesized via an alkaline hydrothermal treatment) has been studied. The ionic charge on the dye molecules was found to affect their ability to adsorb onto the titanate nanotube surface. In the case of (cationic) methylene blue, the adsorption was preferable on the negatively charged surface of titanate nanotubes rather than on positively charged P25 TiO2 nanoparticles. In the case of (anionic) Eriochrome Black T dye, the opposite trend was found. Herein, the dynamics of dye adsorption and the effect of pH on the adsorption capacity are considered.

scholarly journals Sequestration of orange G and methylene blue from aqueous solutions using a Co(ii) coordination polymer

RSC Advances ◽  
2017 ◽  
Vol 7 (43) ◽  
pp. 26532-26536 ◽  
Author(s):  
Cressa Ria P. Fulong ◽  
Timothy R. Cook
Keyword(s):  
Methylene Blue ◽  
Coordination Polymer ◽  
Aqueous Solutions ◽  
Organic Dye ◽  
Dye Molecules ◽  
Orange G

A Co(ii) coordination polymer acts as a sponge for organic dye molecules, removing them from aqueous solutions.

Four Keggin-type polyoxometalate-based complexes derived from bis(pyrazine)–bis(amide) ligands for electrochemical sensing of multiple analytes and adsorbing dye molecules

CrystEngComm ◽  
2022 ◽  
Author(s):  
Zi-Wei Cui ◽  
Jun-Jun Lu ◽  
Hong-Yan Lin ◽  
Jian Luan ◽  
Zhi-Han Chang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Organic Dye ◽  
Electrochemical Sensing ◽  
Dye Molecules ◽  
Keggin Type ◽  
Amide Ligands ◽  
Multiple Analytes

Four new Keggin-based complexes derived from bis(pyrazine)–bis(amide) ligands are used to detect multiple analytes (BrO3− NO2−, Cr(vi) and Fe(iii) ions) and adsorb organic dye molecules from aqueous solution.

Efficient Sunlight Active Nanocomposite Photocatalyst for Degradation of Pollutant Organic Dyes

2013 ◽  
Vol 726-731 ◽  
pp. 650-653
Author(s):  
Li Mei Duan ◽  
Jing Hai Liu ◽  
Qing Yu Pang ◽  
Ling Xu ◽  
Zong Rui Liu
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Treatment Process ◽  
Organic Dyes ◽  
Environmental Pollutants ◽  
Organic Dye ◽  
Water Treatment Process ◽  
One Step ◽  
Pollutants Removal ◽  
The One

The sunlight activated photocatalysts are urgently needed for the applications of photocatalytic techniques to environmental pollutants removal. Herein, we report the one-step hydrothermally prepared CdS/TiO2 nanocomposite photocatalyst that is active in the degradation of pollutant organic dyes under solar light. The morphology and components are confirmed by TEM, SEM and XRD. With methylene blue (MB) as the model pollutant organic dye, the photocatalytic activity of CdS/TiO2 nanocomposite photocatalyst under sunlight is demonstrated, and 80% MB is removed after 120 minutes sunlight illumination. Besides, the influences of pH, the amount of photocatalyst and the addition of H2O2 on photocatalytic activity for the degradation of MB are also investigated to mimic water treatment process.

scholarly journals Mechanistic investigation of photocatalytic degradation of organic dyes by a novel zinc coordination polymer

RSC Advances ◽  
2019 ◽  
Vol 9 (67) ◽  
pp. 39323-39331 ◽  
Author(s):  
Jianqiang Huo ◽  
Donghui Yu ◽  
Haiqiang Li ◽  
Bingcai Luo ◽  
Navamoney Arulsamy
Keyword(s):  
Coordination Polymer ◽  
Photocatalytic Degradation ◽  
Band Gap ◽  
Organic Dyes ◽  
Organic Dye ◽  
Light Energy ◽  
Dye Molecules ◽  
Mechanistic Investigation ◽  
Zinc Coordination

Mechanistic presentation of the photocatalytic degradation of organic dye molecules by absorbing UV-vis light energy that spans the florescent compound TIPA's HOMO to LUMO band gap.

scholarly journals Cauliflower Leave, an Agricultural Waste Biomass Adsorbent, and Its Application for the Removal of MB Dye from Aqueous Solution: Equilibrium, Kinetics, and Thermodynamic Studies

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Seraj Anwar Ansari ◽  
Fauzia Khan ◽  
Anees Ahmad
Keyword(s):  
Experimental Data ◽  
Aqueous Solution ◽  
Methylene Blue ◽  
Agricultural Waste ◽  
Second Order ◽  
Batch Adsorption ◽  
Agricultural Crop ◽  
Order Kinetic ◽  
Basic Dye ◽  
Pseudo Second Order

Cauliflower leaf powder (CLP), a biosorbent prepared from seasonal agricultural crop waste material, has been employed as a prospective adsorbent for the removal of a basic dye, methylene blue (MB) from aqueous solution by the batch adsorption method under varying conditions, namely, initial dye concentration, adsorbent dose, solution pH, and temperature. Characterization of the material by FTIR and SEM indicates the presence of functional groups and rough coarse surface suitable for the adsorption of methylene blue over it. Efforts were made to fit the isotherm data using Langmuir, Freundlich, and Temkin equation. The experimental data were best described by Freundlich isotherm model, with an adsorption capacity of 149.22 mg/g at room temperature. To evaluate the rate of methylene blue adsorption onto CLP, pseudo-first-order, pseudo-second-order, and intraparticle diffusion models were employed. The experimental data were best described by the pseudo-second-order kinetic model. Evaluation of thermodynamic parameters such as changes in enthalpy, entropy, and Gibbs’ free energy showed the feasible, spontaneous, and exothermic nature of the adsorption process. On the basis of experimental results obtained, it may be concluded that the CLP prepared from agricultural waste has considerable potential as low-cost adsorbent in wastewater treatment for the removal of basic dye, MB.

Sign in / Sign up

Export Citation Format

Share Document