scholarly journals Characterizations and nitrate adsorption capacity of Amine-SiO2 material

2019 ◽  
Vol 2 (5) ◽  
pp. 171-176
Author(s):  
Thanh Trung Nguyen ◽  
Toan Phuoc Phan ◽  
Hang Ngoc Le ◽  
Sang Hoang Phan ◽  
Trinh Thi Thu Nguyen ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Nitrate Removal ◽  
Ion Exchange Resin ◽  
Nitrate Adsorption ◽  
Stable Performance ◽  
Amine Groups ◽  
Regeneration Times ◽  
Sio2 Support

Amine-SiO2 material (basically on silicon dioxide) was synthesized by the grafting method with triamine silane to form activated amine groups on the surface of SiO2 support and was applied as a novel adsorbent for nitrate removal from aqueous solution. The characterizations of Amine-SiO2 were determined by using TGA, FTIR, BET, SEM. Nitrate adsorption capacity and durability of Amine-SiO2 were compared with the anion exchange resin (Akualite A420 commercial). The results showed that Amine-SiO2 had high nitrate adsorption capacity, ~ 1.14 fold higher than the Akualite A420 ion exchange resin, based on the adsorption efficiency. This might be due to a strong affinity for nitrate ions of the activated amine groups on the surface of SiO2 support. In addition, the experimental results also proved that Amine-SiO2 material had good durability (stable performance after 10 regeneration times).

scholarly journals CHARACTERIZATION AND ADSORPTION CAPACITY OF AMINE-SIO2 MATERIAL FOR NITRATE AND PHOSPHATE REMOVAL

2019 ◽  
Vol 57 (4) ◽  
pp. 492
Author(s):  
Phan Phuoc Toan ◽  
Nguyen Trung Thanh ◽  
Nguyen Nhat Huy ◽  
Le Ngoc Hang ◽  
Le Tri Thich
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Phosphate Removal ◽  
Phosphate Adsorption ◽  
Stable Performance ◽  
Regeneration Times ◽  
Sem Analyses

Amine-SiO2 material was synthesized and applied as a novel adsorbent for nitrate and phosphate removal from aqueous solution. The characterization of Amine-SiO2 were done by using TGA, FTIR, BET, and SEM analyses. Results showed that Amine-SiO2 had higher nitrate and phosphate adsorption capacity of 1.14 and 4.16 times, respectively, than commercial anion exchange resin (Akualite A420). In addition, Amine-SiO2 also had good durability with stable performance after at least 10 regeneration times, indicating that this material is very promising for commercialization in the future as an adsorbent for water treatment.

Separation of Manganese, Cobalt, Copper, Zinc, and Magnesium By Using an Anion Exchange Resin

1967 ◽  
Vol 50 (4) ◽  
pp. 783-786
Author(s):  
Eugene A Breatjlt
Keyword(s):  
Ion Exchange ◽  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Ion Exchange Resin ◽  
Acid Solutions ◽  
Resin Column ◽  
Hydrochloric Acid Solutions ◽  
Copper Zinc ◽  
Resin Separation

Abstract The metals Mn, Mg, Co, Cu, and Zn were separated by using an anion exchange resin column and progressively less concentrated IIC1 solution as eluting agent. The position of Mg on an anion exchange resin, not previously reported in the literature, was determined. It has been shown that by using two different ion exchange resin columns, simple hydrochloric acid solutions as eluants, and polarographic or flame photometric determinations, 12 metals can be separately estimated in an aqueous solution containing about 100 /μg of each. It is recommended that the study of ion exchange resin separation of metals found in plants be continued.

scholarly journals Multifaceted ion exchange resin-supported hydrogen fluoride: a path to flow hydrofluorination

2019 ◽  
Vol 21 (9) ◽  
pp. 2224-2228 ◽  
Author(s):  
Zhichao Lu ◽  
Bhvandip S. Bajwa ◽  
Okoromoba E. Otome ◽  
Gerald B. Hammond ◽  
Bo Xu
Keyword(s):  
Ion Exchange ◽  
Anion Exchange ◽  
Hydrogen Fluoride ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Ion Exchange Resin ◽  
Anhydrous Hydrogen Fluoride

A solid anhydrous hydrogen fluoride equivalent was prepared by mixing HF gas with an inexpensive anion exchange resin (A26-HF, HF content 30% wt/wt).

scholarly journals Kinetic analysis of sucrose activated carbon for nutrient removal in water

2020 ◽  
Vol 3 (1) ◽  
pp. 208-220
Author(s):  
Sara Jamaliniya ◽  
O. D. Basu ◽  
Saumya Suresh ◽  
Eustina Musvoto ◽  
Alexis Mackintosh
Keyword(s):  
Activated Carbon ◽  
Kinetic Analysis ◽  
Adsorption Capacity ◽  
Nitrate Removal ◽  
Freundlich Isotherm ◽  
Langmuir Model ◽  
Phosphate Removal ◽  
Phosphate Adsorption ◽  
Isotherm Models ◽  
Nitrate Adsorption

Abstract A renewable, green activated carbon made from sucrose (sugar) was compared with traditional bituminous coal-based granular activated carbon (GAC). Single and multi-component competitive adsorption of nitrate and phosphate from water was investigated. Langmuir and Freundlich isotherm models were fitted to data obtained from the nitrate and phosphate adsorption experiments. Nitrate adsorption fits closely to either Freundlich or Langmuir model for sucrose activated carbon (SAC) and GAC with a Langmuir adsorption capacity of 7.98 and 6.38 mg/g, respectively. However, phosphate adsorption on SAC and GAC demonstrated a selective fit with the Langmuir model with an adsorption capacity of 1.71 and 2.07 mg/g, respectively. Kinetic analysis demonstrated that adsorption of nitrate and phosphate follow pseudo-second-order kinetics with rate constant values of 0.061 and 0.063 g/(mg h), respectively. Competitive studies between nitrate and phosphate were demonstrated in preferential nitrate removal with GAC and preferential phosphate removal with SAC. Furthermore, nitrate and phosphate removals decreased from 75% removal to 35% removal when subject to multi-component solutions, which highlights the need for adsorption analysis in complex systems. Overall, SAC proved to be competitive with GAC in the removal of inorganic contaminants and may represent a green alternative to coal-based activated carbon.

scholarly journals CO2 Adsorption and Desorption by Waste Ion-Exchange Resin–Based Activated Carbon on Fixed Bed

2021 ◽  
Vol 9 ◽  
Author(s):  
Mengqi Wei ◽  
Qiuyue Zhao
Keyword(s):  
Activated Carbon ◽  
Ion Exchange ◽  
Adsorption Capacity ◽  
Gas Flow ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Adsorption Rate ◽  
Adsorption And Desorption ◽  
Product Gas ◽  
Adsorption Temperature

The waste ion-exchange resin–based activated carbon (WIRAC) was utilized for CO2 adsorption. The effect of adsorption temperature, gas flow, CO2 concentration, and adsorbent filling content on CO2 adsorption properties of WIRAC and the effect of desorption temperature and sweep gas flow on CO2 desorption performances of WIRAC were researched. In the adsorption process, with the increase of adsorption temperature, the CO2 adsorption capacity and adsorption rate decrease; as the gas flow increases, the CO2 adsorption capacity decreases, but the adsorption rate increases; with the increase of CO2 concentration and adsorbent filling content, the CO2 adsorption capacity and adsorption rate both increase. In the desorption process, the higher the desorption temperature and the smaller the sweep gas flow, the higher the CO2 purity of product gas and the longer the desorption time. In order to make sure the adsorbent be used efficiently and the higher CO2 concentration of product gas, the adsorption and desorption conditions selected should be a suitable choice.

Preparation and Characteristics of a New Anion Exchange Resin from Agricultural by-Products, Cassava (Manihot esculenta) Stalk

2013 ◽  
Vol 295-298 ◽  
pp. 87-90
Author(s):  
Wei Ming Mo ◽  
Wang Li ◽  
Cai Yan Kang ◽  
Min Jun Zhang ◽  
Yu Long Lun ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Nitrate Removal ◽  
Influential Factor ◽  
Optimal Conditions ◽  
Reaction Parameters ◽  
Key Factor ◽  
New Type ◽  
By Products

A new type of anion exchange resin was prepared from cassava stalk (CS) after reaction with epichlorohydrin and dimethylamine in the presence of pyridine and N,N-dimethylformamide. In order to obtain the optimal conditions for the preparation of cassava stalk anion exchanger (CS-AE), the single influential factor experiments were carried out, with nitrate removal efficiency as indicator. Factors like dosage of CS and catalyst, experimental temperatures were examined. The results indicated that the optimal synthesis reaction parameters of dosages were CS: pyridine: dimethylamine = 2 g: 30 ml: 35 ml. The optimal experimental temperature was 100 °C; the catalytic temperature was a key factor in the preparation of CS-AE.

Hemoperfusion with a New Anion Exchange Resin Corrects the Metabolic Alkalosis in Pyloric Stenosis: An Experimental Demonstration

1992 ◽  
Vol 15 (11) ◽  
pp. 677-680 ◽  
Author(s):  
S. Faenza ◽  
M. Balestri ◽  
G. Martinelli ◽  
M. Spighi ◽  
M. Fini ◽  
...  
Keyword(s):  
Ion Exchange ◽  
General Anesthesia ◽  
Pyloric Stenosis ◽  
Metabolic Alkalosis ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Hypertrophic Pyloric Stenosis ◽  
Ion Exchange Resin ◽  
Extracorporeal Circuit ◽  
Experimental Demonstration

An experimental model of hypertrophic pyloric stenosis was made by suture of the pyloric wall and gastrostomy in 10 rabbits under general anesthesia. Blood sampling indicated severe alkalosis and hypochloremia 3h 30 min after surgery. To correct the derangement, we tested an ion exchange resin (Dowex SAR), coated with a methacrylic hydrogel. A cartridge containing 18 g of this resin was inserted in an extracorporeal circuit. This chloride charged resin achieved uptake of HCO−3 ions, and elution of CI− ions. The electrolytic balance was fully restored after 10 min of treatment.

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