scholarly journals Biosorbents prepared from pomelo peel by hydrothermal technique and its adsorption properties for congo red

2020 ◽  
Vol 7 (4) ◽  
pp. 045505 ◽  
Author(s):  
Heng Zheng ◽  
Qinye Sun ◽  
Yanhui Li ◽  
Qiuju Du
Keyword(s):  
Congo Red ◽  
Adsorption Properties ◽  
Hydrothermal Technique ◽  
Pomelo Peel

Facile preparation of Fe2O3 Al2O3 composite with excellent adsorption properties towards Congo red

2021 ◽  
Author(s):  
Yue Jiang ◽  
Qiushuo Mao ◽  
Tianhao Ma ◽  
Xiaoguang Liu ◽  
Yan Li ◽  
...  
Keyword(s):  
Congo Red ◽  
Adsorption Properties ◽  
Al2o3 Composite ◽  
Facile Preparation

scholarly journals STUDY ON THE ADSORPTION CHARACTERISTICS OF CONGO RED BY SYCAMORE BARK ACTIVATED CARBON

2017 ◽  
Vol 1 ◽  
pp. 64 ◽  
Author(s):  
Li Cong ◽  
Lingling Feng ◽  
Xinlai Wei ◽  
Jie Jin ◽  
Ke Wu
Keyword(s):  
Activated Carbon ◽  
Congo Red ◽  
Room Temperature ◽  
Adsorption Process ◽  
Removal Rate ◽  
Adsorption Properties ◽  
Adsorption Efficiency ◽  
Adsorbent Dosage ◽  
Langmuir Isotherm Model ◽  
Pseudo Second Order

The activated carbon was prepared from sycamore bark by activation of zinc chloride. The absorbing effect of activated carbon on Congo red wastewater is studied. The characteristics of sycamore bark activated carbon were characterized by SEM and BET. The effects of adsorbent dosage, time, and shaking speed on the adsorption properties of Congo red by sycamore bark activated carbon were studied. The isotherm, kinetics, and thermodynamics of adsorption were explored. The results revealed that the activated carbon contain a large apparent mesopores. Adsorption efficiency was increased with enhancing the adsorption dosage and time. The removal rate of Conge red reached to 98.2% under room temperature with adsorbent dosage of 3.0 g/L, adsorption time of 120 min, shaking speed of 60r/min. The adsorption of Congo red on sycamore bark activated carbon was followed Langmuir isotherm model and Lagergren pseudo-second order kinetics model. The adsorption was spontaneous, endothermic, and the entropy was increasing in the adsorption process.

Preparation of Chitosan and Epichlorohydrin Cross-Linked Adsorbents and Adsorption Property of Dyes

2013 ◽  
Vol 423-426 ◽  
pp. 584-587 ◽  
Author(s):  
Chun Guang Li ◽  
Fan Wang ◽  
Wei Gong Peng ◽  
Yan Hong He
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Infrared Spectrum ◽  
Congo Red ◽  
Adsorption Property ◽  
Adsorption Properties ◽  
Dye Wastewater ◽  
Alkaline Conditions ◽  
The Cross ◽  
Scanning Electron

Cross-linked chitosan adsorbents were prepared by modification of chitosan with epichlorohydrin under alkaline conditions. It was showed that chitosan had cross-linked with epichlorohydrin by infrared spectrum analysis. Using scanning electron microscopy, it was observed that the roughness increased and granular material exhibited on the cross-linked chitosan adsorbents surface. Using Congo red solution as simulated dye wastewater, the adsorption properties of cross-linked chitosan adsorbent were detected. The results showed that the adsorption capacity of the cross-linked chitosan adsorbents for Congo red was higher than that of chitosan.

A new stable luminescent Cd(ii) metal–organic framework with fluorescent sensing and selective dye adsorption properties

2018 ◽  
Vol 47 (28) ◽  
pp. 9466-9473 ◽  
Author(s):  
Wen-Quan Tong ◽  
Wei-Ni Liu ◽  
Jian-Guo Cheng ◽  
Peng-Feng Zhang ◽  
Gao-peng Li ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Congo Red ◽  
Selective Adsorption ◽  
Metal Organic Framework ◽  
Dye Adsorption ◽  
Adsorption Properties ◽  
Carboxyl Groups ◽  
Fluorescent Sensing ◽  
Metal Organic ◽  
Red Dye

A stable Cd-MOF with free carboxyl groups in the channels has been synthesized, showing luminescent sensitivity for Fe3+, CrO42− and Cr2O72− ions in aqueous solution, and selective adsorption of Congo red dye.

Rational design and synthesis of chitosan-quinoa polysaccharide composite aerogel and its adsorption properties for Congo red and methylene blue

2021 ◽  
Author(s):  
Minghui Tan ◽  
Shumin Zheng ◽  
Hongning Lv ◽  
Bao Wang ◽  
Qing‐Sheng Zhao ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Congo Red ◽  
Potential Application ◽  
Rational Design ◽  
Adsorption Properties ◽  
Composite Aerogel ◽  
Design And Synthesis ◽  
Adsorption Of Water

This study was performed to investigate the potential application of chitosan (CS) and quinoa polysaccharide (QS) composite aerogel for the adsorption of water dyes. The properties of the synthesized CSQS...

scholarly journals Optimization study of adsorption of crystal violet and congo red onto sepiolite and clinoptiolite

2017 ◽  
Vol 19 (2) ◽  
pp. 336-343 ◽  
Keyword(s):  
Aqueous Solution ◽  
Removal Efficiency ◽  
Crystal Violet ◽  
Congo Red ◽  
Adsorption Properties ◽  
Operating Conditions ◽  
Suitable Material ◽  
Optimization Study ◽  
Red Dye ◽  
Central Composite

The purpose of this study was to investigate the adsorption properties of locally available sepiolite and clinoptilolite materials as adsorbents for the removal of crystal violet and congo red dye ions from aqueous solution. Previous experiments have revealed that two variables, concentration and adsorbent dosage, have a significant effect on removal efficiency. In order to find the set of operating conditions for these variables that result in the best removal efficiency, central composite design of experiments was utilized. The results showed that sepiolite is a suitable material with 99% removal efficiency for the adsorption of both crystal violet and congo red from aqueous solution. However, in spite of clinoptilolite is also a suitable adsorbent for crystal violet, removal efficiency of congo red is rather low.

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