Epidemiological studies have shown an association between consumption of disinfected drinking water and adverse health outcomes. The chemicals used to disinfect water react with occurring organic matter and anthropogenic contaminants in the source water, resulting in the formation of disinfection by-products (DBPs). The observations that some DBPs are carcinogenic in animal models have raised p...

A new method for quick chitin isolation from the shells of crab, crayfish and shrimp is described. The main difference between the new method and the conventional method is two sodium hypochlorite (NaClO) treatments for 10 min each before the processes of demineralisation and deproteinisation. After the NaClO treatment, only 15 min is adequate for the demineralisation and 20 min for the deprote...

Nanoplastics have gradually become a concern due to the wide use of plastics. in aqueous phase can be exposed users through water supply networks and cannot efficiently removed by conventional treatment processes. This work studied degradation polystyrene nanoplastics (PS-NP) two commonly used advanced oxidation systems: UV/NaClO UV/peroxymonosulfate (PMS). Results showed that almost no turbidi...

ÐA protocol was developed to rapidly assess the eciency of chemical washing for the removal of excess biomass from biotrickling ®lters for waste air treatment. Although the experiment was performed on a small scale, conditions were chosen to simulate application in full-scale biotrickling ®lters. From 18 treatments with di€erent combinations and concentrations of chemicals, only washing with 0...

The sensitivity of Rosa damascena cultured cells to chlorate was measured by plating samples of suspensions in agar containing NaClO(3). This sensitivity depended on the age of the cultures that were plated. Chlorate-resistant colonies isolated from 5- to 7-day cultures retained their resistance through many generations of growth in medium lacking NaClO(3); they also retained resistance when mi...

Dengue (family Flaviviridae, genus Flavivirus, DENV) remains the leading arboviral cause of mortality in the tropics. Wolbachia pipientis has been shown to interrupt DENV transmission and is presently being trialled as a biological control. However, deployment issues have arisen on methods to temporarily suppress wild mosquito populations before Wolbachia-infected mosquito releases. By suppress...

The influence of simple salts on the ion exchange and protonation equilibria of an amphoteric ion-exchange resin, which has strong base and weak acid moieties in a single functional group fixed onto the styrene-DVB matrix, has been investigated. Concentrations of ionic species in the amphoteric ion-exchange resin in equilibrium with various sodium salt solutions were estimated by (23)Na NMR spe...

Background: Stabilized sodium hypochlorite solution at 4% (4% NaClO) is a product with healing properties but still little studied scientifically. Here we evaluated the administration of NaClO in model clean and infected skin lesions. Methods: Lesions were obtained on dorsal region Wistar rats. The wounds some animals inoculated Staphylococcus epidermidis (50uL, 10-7) lesions treated Trofodermi...

Epidemiological evidence suggests a link between consumption of chlorinated drinking water and various cancers. Chlorination of water rich in organic chemicals produces carcinogenic organochlorine by-products (OBPs) such as trihalomethanes and haloacetic acids. Since the discovery of the first OBP in the 1970s, there have been several investigations designed to determine the biological effects ...