Pre-evaluation of strong base anion exchange, Amberlite IRA 958-Cl resin for nitrate removal

Norhayati, Abdullah; Muhammad, Raza; Kassim, A.A.

doi:10.1016/j.matpr.2019.06.350

Cited by 6 publications

(2 citation statements)

References 24 publications

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“…À in water are also different. The treatment technologies for NO 3 À in water include biological methods, [8][9][10] physical methods [11,12] and chemical methods, [13,14] among which electrochemical denitrification technology has gradually received widespread attention for its advantages of high treatment efficiency, no secondary pollution and easy operation. [15][16][17] Moreover, the electric energy used can also be provided by renewable energy sources such as solar and wind energy, making the process more energy-saving and environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

In‐Situ Characterization Technologies for Electrocatalytic Reduction nitrate to Ammonia on Copper‐Based Catalysts

Fu,

Sun,

et al. 2024

ChemCatChem

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The excess nitrate (NO3‐) in the water mainly comes from agricultural fertilization and industrial wastewater, which breaks the nitrogen balance and poses a serious threat to the environment and human health. Driven by renewable energy, the electrocatalytic reduction of NO3‐ to ammonia (NH3) (ENO3RA) is an environmentally friendly and sustainable technology. Due to its special structure, copper (Cu) is currently one of the best catalysts for ENO3RA, but the reaction mechanism and the structure‐activity relationships of catalysts are still not clear enough. In‐situ characterization is a powerful tool to gain insight into the reaction process. This review introduces several types of in‐situ techniques such as in‐situ XAS, in‐situ FTIR and in‐situ DEMS, summarizes five pathways for converting *NO as the key intermediate to NH3 during ENO3RA on Cu‐based catalysts. The research progress of Cu‐based electrocatalysts in recent years is sorted out from the aspects of composition and structure, and the catalytic mechanisms were discussed with the help of in‐situ characterization technologies. This review would be of help to provide reference characterization methods for exploring the mechanism and the design of electrocatalysts for ENO3RA.

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Section: Introductionmentioning

confidence: 99%

In‐Situ Characterization Technologies for Electrocatalytic Reduction nitrate to Ammonia on Copper‐Based Catalysts

Fu,

Sun,

et al. 2024

ChemCatChem

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“…The functionalization process will be involved amination process by attaching quaternary ammonium into the polymeric backbone thus turning the hydrophilic H-XL polymer into a strong anion exchange resin -CAX respectively. Same method as purposed by Norhayati et al (2019) to carry a pre-evaluation test on CAX resin. This study was conducted to investigate CAX performance to adsorb nitrate ions from water body.…”

Section: Introductionmentioning

confidence: 99%

Pre-Evaluation of Crosslinked Anion Exchange (Cax) Resin on Nitrates Removal

Abdullah

Kassim

2020

JCEIB

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This study is present the result of synthesizing crosslinked anion exchange (CAX) resin bearing quaternary ammonium functionalities. Crosslinked anion exchange of poly(HEMA-co-EGDMA-co-VBC) were synthesized via the modified suspension polymerization technique, then treated in hyper-crosslinking reaction to increase specific surface area (SSA) of CAX beads resin from ~5 to 124 m2/g and followed by amination treatment with N,N-dimethylbutylaminee (DMBA) to obtain CAX resin. After functionalized process, the amount of nitrogen content increased and intensity at 1265 cm-1 that assigned for chloromethyl group has decreased, showing that DMBA successfully being attached to the backbone. CAX resin was fully characterized by using Scanning Electron Microscopy (SEM), and Fourier Transform Infrared Spectroscopy (FT-IR) respectively. A pre-evaluation study was carried to investigate the performance of CAX beads resin to remove nitrate by using ion exchange method. Three parameters were used to study the sorption process; contact time, influent concentration and amount of resin used. For overall sorption, the sorption managed to obtain 88 % nitrate removal by using 0.5 g of CAX resin at 50 ppm influent concentration within 1-hour contact time and the highest adsorption of CAX achieved was 93 % removal of nitrate ions within 4-hours contact time.

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Biodegradable chitosan-ethylene glycol hydrogel effectively adsorbs nitrate in water

Chen

Guo

et al. 2020

Environ Sci Pollut Res

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Pre-evaluation of strong base anion exchange, Amberlite IRA 958-Cl resin for nitrate removal

Cited by 6 publications

References 24 publications

In‐Situ Characterization Technologies for Electrocatalytic Reduction nitrate to Ammonia on Copper‐Based Catalysts

In‐Situ Characterization Technologies for Electrocatalytic Reduction nitrate to Ammonia on Copper‐Based Catalysts

Pre-Evaluation of Crosslinked Anion Exchange (Cax) Resin on Nitrates Removal

Biodegradable chitosan-ethylene glycol hydrogel effectively adsorbs nitrate in water

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