Continuous Degradation of Formaldehyde by Using NaClO2‐SA/CMC‐Na Composite Microcapsules DOI
Xinyue Zhang,

Qiurong Chen,

Yan Luo

et al.

ChemistrySelect, Journal Year: 2024, Volume and Issue: 9(43)

Published: Nov. 1, 2024

Abstract Sodium chlorite (NaClO 2 ) is a new type of air disinfectant, which can oxidize formaldehyde into carbon dioxide (CO on account releasing chlorine (ClO gas under acidic condition. Unfortunately, NaClO prone to moisture absorption and decomposition when exposed air. In this paper, was microencapsulated based emulsion crosslinking method for improving its stability controlled release properties. Due their high biocompatibility, sodium alginate (SA) carboxymethyl cellulose (CMC‐Na) were selected as the wall material prepare ‐SA/CMC‐Na composite microcapsules. The results showed that mean particle size microcapsules about 225 nm, encapsulation ratio up 73.18%. addition, thermal environmental tolerance are improved greatly through microencapsulating. It proved by degradation testing efficiency using resulted samples continue increase after seven days in pH 6.5 environment, indicating good controlled‐release performance. Moreover, 30 µg/mL solution 97.08%. Meanwhile, 20 repetition degradation, still continuously degrade gas. Therefore, reveal prolonged action degradation.

Language: Английский

Influencing Factors and Purification Performance of a Negative Ion Air Purifier for Indoor Ammonia Gas Removal DOI Creative Commons
Yilin Li, Zewen Liu, Yidong Li

et al.

Buildings, Journal Year: 2025, Volume and Issue: 15(2), P. 261 - 261

Published: Jan. 17, 2025

The negative ion air purifier (NIAP) has been used for capturing particulate matter. Nevertheless, the knowledge on its effectiveness in removing other pollutants such as ammonia gas remains limited. In this study, effect of an NIAP indoor removal was evaluated through a series experimental studies. applicability and different influencing, operating, environmental factors performance were firstly investigated by conducting experiments. Then, order to understand spatial distribution by-products, field measurements gas, ozone, concentrations real bathroom performed cases with turned off. results indicated that ions effective reducing concentration. operating including upstream wind speed, degree voltage, initial concentration have great influences efficiency NIAP. highest can reach 95.8%, when speed 0.8 m/s voltage at gear 3 (3.0 kV). purification could up 80%.

Language: Английский

Citations

0
Review of research advances in microbial sterilization technologies and applications in the built environment DOI

Xinran Zeng,

Chunhui Li, Zhenhai Li

et al.

Journal of Environmental Sciences, Journal Year: 2024, Volume and Issue: 154, P. 314 - 348

Published: Oct. 22, 2024

Language: Английский

Citations

0
Continuous Degradation of Formaldehyde by Using NaClO2‐SA/CMC‐Na Composite Microcapsules DOI
Xinyue Zhang,

Qiurong Chen,

Yan Luo

et al.

ChemistrySelect, Journal Year: 2024, Volume and Issue: 9(43)

Published: Nov. 1, 2024

Abstract Sodium chlorite (NaClO 2 ) is a new type of air disinfectant, which can oxidize formaldehyde into carbon dioxide (CO on account releasing chlorine (ClO gas under acidic condition. Unfortunately, NaClO prone to moisture absorption and decomposition when exposed air. In this paper, was microencapsulated based emulsion crosslinking method for improving its stability controlled release properties. Due their high biocompatibility, sodium alginate (SA) carboxymethyl cellulose (CMC‐Na) were selected as the wall material prepare ‐SA/CMC‐Na composite microcapsules. The results showed that mean particle size microcapsules about 225 nm, encapsulation ratio up 73.18%. addition, thermal environmental tolerance are improved greatly through microencapsulating. It proved by degradation testing efficiency using resulted samples continue increase after seven days in pH 6.5 environment, indicating good controlled‐release performance. Moreover, 30 µg/mL solution 97.08%. Meanwhile, 20 repetition degradation, still continuously degrade gas. Therefore, reveal prolonged action degradation.

Language: Английский

Citations

0