Comparative experiments on the inactivation of cyclops by chlorine dioxide and chlorine were conducted. Batch experiments were performed in order to analyze the influence of pH value, organic precursor concentration on the rate of inactivation of cyclops with chlorine dioxide. In addition, the synergistic effect of different pre-oxidation followed by coagulation process on removal of cyclops in raw water was evaluated. It was found that chlorine dioxide possessed better inactivation effect than chlorine. Cyclops can be completely inactivated after 30 min of contact time by low dosage of chlorine dioxide (1.0 mg/L). The rate of inactivation was essentially the same at pH 5.7 and 8.0, and pH 9.8 resulted in the 10% of decrease in inactivation rate of cyclops than pH 5.7 - 8.0 in same contact time. The organic precursor concentration had negative effects on inactivation, and the higher the organic precursor concentration was, the lower inactivation rate of cyclops was achieved. The coagulation jar test showed that cyclops in the raw water could be completely removed by synergistic effect of chlorine dioxide pre-oxidation followed by coagulation process at chlorine dioxide dosage of 0.9 mg/L.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Activation of ClO by Nanoscale Zero-Valent Iron for Efficient Soil Polycyclic Aromatic Hydrocarbon Degradation: New Insight into the Relative Contribution of Fe(IV) and Hydroxyl Radicals.
Toxics
January 2025
School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China.
Recently, the activation of chlorine dioxide (ClO) by metal(oxide) for soil remediation has gained notable attention. However, the related activation mechanisms are still not clear. Herein, the variation of iron species and ClO, the generated reactive oxygen species, and the toxicity of the degradation intermediates were explored and evaluated with nanoscale zero-valent iron (nFe) being employed to activate ClO for soil polycyclic aromatic hydrocarbon (PAH) removal.
View Article and Find Full Text PDFImpact of chlorine dioxide and chlorhexidine mouthwashes on friction and surface roughness of orthodontic stainless steel wires: an in-vitro comparative study.
F1000Res
January 2025
Department of Orthodontics and Dentofacial Orthopaedics, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, Karanataka, 576104, India.
Objectives: Good oral hygiene measures are important for successful orthodontic treatment. They involve various types of mouthwashes which have been reported to cause alteration of mechanical properties of archwires. This study aimed to evaluate the effects of a new kind of chlorine-dioxide-containing mouthwash on the mechanical properties and surface morphology of stainless steel orthodontic archwires against the already prevalent chlorhexidine mouthwash in the market.
View Article and Find Full Text PDFOral Opportunistic Infection Induced by Stress and Silent Type 2 Diabetes Mellitus in Young Adult Patient: A Case Report.
Int Med Case Rep J
January 2025
Department of Oral Medicine, Faculty of Dentistry, Universitas Padjadjaran, Bandung, Indonesia.
Introduction: Opportunistic infections (IO) are infections of microbiota (fungi, viruses, bacteria, or parasites) that generally do not cause disease but turn into pathogens when the body's defense system is compromised. This can be triggered by various factors, one of which is due to a weakened immune system due to Diabetes Mellitus (DM), which increases the occurrence of opportunistic infections, especially in the oral cavity. Fungal (oral candidiasis) and viral (recurrent intraoral herpes) infections can occur in the oral cavity of DM patients.
View Article and Find Full Text PDFNovel sterilization method of Bacillus atrophaeus and Geobacillus stearothermophilus spores by low concentration chlorine dioxide gas.
J Microorg Control
January 2025
Research and Development Center, Taiko Pharmaceutical Co., Ltd.
Chlorine dioxide (ClO) is a powerful disinfectant widely regarded as a safe and effective hygienic agent in pharmaceutical plants and other manufacturing facilities that require sterility. However, the efficacy of low concentrations of ClO gas on sterilizing spore-forming bacteria remains uncertain. In this study, we investigated the optimal conditions for disinfection of spore-forming bacteria with low concentrations of ClO gas using biological indicators.
View Article and Find Full Text PDFDevelopment and Assessment of a Color-Variable Chlorine Dioxide Slow-Releasing Card for Litchi Preservation.
Foods
January 2025
Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510641, China.
Chlorine dioxide (ClO) gas has attracted considerable attention due to its safety and efficiency. In this study, we successfully developed a color-variable ClO slow-releasing card for postharvest litchi. The optimal ClO slow-releasing card was prepared as follows: Card A was soaked in 2.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!