Ion exchange/adsorption properties of crystalline compound of anatase and rutile

1997 ◽  
Vol 222 (1-2) ◽  
pp. 75-80 ◽  
Author(s):  
Song Yinjie ◽  
Jiang Liqiang ◽  
Zhao Aimin ◽  
Jin Qixin ◽  
Song Dakang
Keyword(s):  
Ion Exchange ◽  
Adsorption Properties ◽  
Crystalline Compound ◽  
Exchange Adsorption

scholarly journals Synthesis, Characterization, and Properties of Sulfonated Chitosan for Protein Adsorption

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Xiaomin Zhang ◽  
Jie Sun
Keyword(s):  
Ion Exchange ◽  
Protein Purification ◽  
Protein Adsorption ◽  
Protein Separation ◽  
Binding Capacity ◽  
Adsorption Properties ◽  
Synthesis Process ◽  
Exchange Adsorption ◽  
Good Potential

Chitosan sulfate was prepared and characterized as a new chromatography media for protein separation. The degree of sulfonation of chitosan could be well controlled and impacted under conditions in the synthesis process. The prepared chitosan sulfate shows improved binding capacity with proteins. Sulfonated chitosan shows improved ion-exchange adsorption properties with proteins, which could have good potential in protein purification.

A new ion exchange adsorption mechanism between carbonate groups and fluoride ions of basic aluminum carbonate nanospheres

RSC Advances ◽  
2015 ◽  
Vol 5 (17) ◽  
pp. 13256-13260 ◽  
Author(s):  
Fang Wei ◽  
Changyan Cao ◽  
Peipei Huang ◽  
Weiguo Song
Keyword(s):  
Ion Exchange ◽  
Adsorption Mechanism ◽  
Adsorption Properties ◽  
Exchange Mechanism ◽  
Fluoride Ions ◽  
Exchange Adsorption ◽  
Basic Aluminum

Basic aluminum carbonate nanospheres exhibited excellent adsorption properties for fluoride, and a new ion exchange mechanism involving carbonate groups and fluoride ions was proposed.

A review on extractive fermentation via ion exchange adsorption resins opportunities, challenges, and future prospects

2021 ◽  
Author(s):  
Abdul Sattar Jatoi ◽  
Humair Ahmed Baloch ◽  
Shaukat Ali Mazari ◽  
N. M. Mubarak ◽  
Nizamuddin Sabzoi ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Extractive Fermentation ◽  
Future Prospects ◽  
Exchange Adsorption

scholarly journals Polymer Composite—A Potential Biomaterial for the Removal of Reactive Dye

2012 ◽  
Vol 9 (4) ◽  
pp. 1823-1834 ◽  
Author(s):  
P. N. Palanisamy ◽  
A. Agalya ◽  
P. Sivakumar
Keyword(s):  
Ion Exchange ◽  
Langmuir Isotherm ◽  
Isosteric Heat ◽  
Reactive Dye ◽  
Isotherm Model ◽  
Batch Adsorption ◽  
Solution Ph ◽  
Saw Dust ◽  
Exchange Adsorption ◽  
Langmuir Isotherm Model

Poly Pyrrle saw dust composite was prepared by reinforcement of natural wood saw dust (obtained fromEuphorbia Tirucalli Lwood) and Poly Pyrrole matrix phase. The present study investigates the adsorption behaviour of Poly Pyrrole Saw dust Composite towards reactive dye. The batch adsorption studies were carried out by varying solution pH, initial dye concentration, contact time and temperature. The kinetic study showed that adsorption of Reactive Red by PPC was best represented by pseudo-second order kinetics with ion exchange adsorption. The equilibrium data were analyzed by Freundlich and Langmuir isotherm model. The equilibrium isotherm data were fitted well with Langmuir isotherm model. The maximum monolayer adsorption capacities calculated by Langmuir model were 204.08 mg/g for Reactive Red at 303 K. The thermodynamic parameters suggest the spontaneous, endothermic nature of ion exchange adsorption with weak Vader walls force of attraction. Activation energy for the adsorption of Reactive by Poly Pyrrole Composite was 11.6387 kJ/mole, Isosteric Heat of adsorption was 48.5454 kJ/mole also supported the ion exchange adsorption process in which forces of attraction between dye molecules and PPC is weak.

Effect of Heat Modification and Biofilm on Zeolite Adsorption Properties

2010 ◽  
Vol 439-440 ◽  
pp. 956-959 ◽  
Author(s):  
Hong Long ◽  
Jin Long Zuo
Keyword(s):  
Ion Exchange ◽  
Adsorption Capacity ◽  
Mean Value ◽  
Adsorption Properties ◽  
Ammonia Removal ◽  
Ammonium Ion ◽  
Modified Zeolite ◽  
Langmuir Isotherms ◽  
Bench Scale ◽  
And Diffusion

In order to improve ammonia removal capability from wastewater, zeolite was modified with heat and biofilm in this paper. The results showed that the adsorption capacity of heat modified zeolite could be reach mean value of 120.18meq/100g, which was 1.55 times than virgin zeolite. The results of bench scale experiments also showed that the data in the experiments were in line with Langmuir isotherms for ammonium ion absorbed onto heat modified zeolite. Moreover the biofilm which attached on the surface of heat modified zeolite only modified the surface feature of modified zeolite, while ion-exchange and diffusion procedure were not affected.

scholarly journals A Mini-Review on Anion Exchange and Chelating Polymers for Applications in Hydrometallurgy, Environmental Protection, and Biomedicine

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 784
Author(s):  
Piotr Cyganowski ◽  
Anna Dzimitrowicz
Keyword(s):  
Ion Exchange ◽  
Environmental Protection ◽  
Sharp Increase ◽  
Selective Adsorption ◽  
Adsorption Properties ◽  
Heat Management ◽  
Chelating Resins ◽  
Increasing Demand ◽  
Trace Concentrations ◽  
Chelating Polymers

The rapidly increasing demand for technologies aiming to resolve challenges of separations and environmental protection causes a sharp increase in the demand for ion exchange (IX) and chelating polymers. These unique materials can offer target-selective adsorption properties vital for the removal or recovery of harmful and precious materials, where trace concentrations thereof make other techniques insufficient. Hence, recent achievements in syntheses of IX and chelating resins designed and developed in our research group are discussed within this mini-review. The aim of the present work is to reveal that, due to the diversified and unique physiochemical characteristics of the proposed materials, they are not limited to traditional separation techniques and could be used in multifunctional areas of applications, including catalysis, heat management, and biomedicine.

scholarly journals Approaches to the mitigation of ammonia inhibition during anaerobic digestion – a review

2020 ◽  
Vol 15 (3) ◽  
pp. 551-570
Author(s):  
Eric Mutegoa ◽  
Askwar Hilonga ◽  
Karoli N. Njau
Keyword(s):  
Anaerobic Digestion ◽  
Ion Exchange ◽  
Membrane Distillation ◽  
Chemical Additives ◽  
Ammonia Content ◽  
Anaerobic Digesters ◽  
Ammonia Inhibition ◽  
Ammonium N ◽  
Digestion Technique ◽  
Exchange Adsorption

Abstract The digestion process of organic waste rich in high ammonia content has always been a gridlock during the methanogenesis process. The free ammonia may increase inhibition/toxicity, which in turn affects the microbial community in the digester and eventually leads to process failures. Substantial methods have been proposed and assessed for curtailing ammonia emissions in anaerobic digesters to attain a safe and steady process so that, along with high methane production, high quality effluents can also be recovered. There are several means for lowering the erratic ammonia in organic wastes that are in use currently, such as decrease of pH, which favours the formation of ammonium over ammonia in the equilibrium; for example, the use of chemical additives that attach ammonium-N. Ammonia can also be removed from nitrogen-rich substrates during anaerobic digestion through other methods such as struvite precipitation, membrane distillation, air stripping, ion exchange, and adsorption. A thorough survey of different articles has shown that ion exchange, adsorption and changing of the C/N ratio through the co-digestion technique are the most commonly studied methods for mitigating ammonia inhibition in wastewater during anaerobic digestion. A detailed review of these methods in the context of nitrogen-rich substrates will be discussed in this paper.

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