This research tested the treatment efficacy of an Energy Savings Nanofiltration 1 Low Fouling (ESNA 1-LF) nanofiltration (NF) and an Energy Saving Polyamide 2 (ESPA2) reverse osmosis (RO) membrane for removing malathion from water. Both membranes are of composite polyamide construction. The study included measuring malathion rejection using both pristine membranes and membranes exposed to a simulated secondary wastewater effluent foulant before and after two types of clean-in-place procedures. Across all conditions studied, malathion rejection ranged from 84 to 95% for the ESNA1-LF NF membrane and 77 to 94% for the ESPA2 RO membrane. Contact angle measurements were also collected for each membrane exposure condition. While the contact angle measurements indicated changes to the hydrophobicity of the selective layer of the membranes, they did not correlate to changes in the performance of malathion rejection. As expected, it was observed that malathion rejection improved with the introduction of foulant. Also, the clean-in-place procedures helped restore flux while maintaining malathion rejection.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11864323 | PMC |
| http://dx.doi.org/10.2166/ws.2024.043 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Rejection of malathion by nanofiltration and reverse osmosis membranes exposed to foulant and two clean-in-place procedures.
Water Sci Technol Water Supply
March 2024
Geothermal Energy & Subsurface Systems Group, Power & Energy Systems Department, Idaho National Laboratory, Idaho Falls, ID 83415, USA.
This research tested the treatment efficacy of an Energy Savings Nanofiltration 1 Low Fouling (ESNA 1-LF) nanofiltration (NF) and an Energy Saving Polyamide 2 (ESPA2) reverse osmosis (RO) membrane for removing malathion from water. Both membranes are of composite polyamide construction. The study included measuring malathion rejection using both pristine membranes and membranes exposed to a simulated secondary wastewater effluent foulant before and after two types of clean-in-place procedures.
View Article and Find Full Text PDFEnhanced metabolism and target gene overexpression confer resistance against acetolactate synthase-inhibiting herbicides in Bromus sterilis.
Pest Manag Sci
April 2021
Department of Agroecology and Crop Production, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic.
Background: Intensive application of acetolactate synthase (ALS)-inhibiting herbicides has resulted in herbicide-resistance in many weeds, including Bromus sterilis. The present study was conducted to identify the mechanisms conferring resistance to ALS-inhibiting herbicides in a Bromus sterilis biotype.
Results: Dose-response studies revealed the resistant biotype to be 288 times less sensitive to pyroxsulam than the susceptible biotype.
[Deliberate use of several products for Pediculus capitis (De Geer, 1778) control by parents or tutors of elementary school children].
Rev Cubana Med Trop
April 2013
Departamento Control de Vectores, Instituto de Medicina Tropical Pedro Kouri, Ciudad de La Habana, Cuba.
Introduction: self-medication and use of several products as peliculicides seem to be common procedures for those persons living with schoolchildren, in order to eliminate head lice.
Objective: to analyze the deliberate use of several products by the people living with elementary school children, so as to control their pediculosis capitis.
Methods: a questionnaire- and exchange of opinion-based survey on the products used to control or eliminate head lice was administered to 896 people who lived with children aged 5 to 10 years.
Insecticide residues in stored grains in Sonora, Mexico: quantification and toxicity testing.
Bull Environ Contam Toxicol
February 2008
Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Rosales y Blvd. Luis Encinas s/n, Centro, Hermosillo, Sonora C.P. 83000, Mexico.
Food safety has acquired great attention by food importer and exporters. Food rejection or acceptance across international borders is based on the compliance with international food regulations. Due to the lack of recent data on pesticide residues in Mexican grains, this study focused on detecting and quantifying insecticide residues in stored wheat, corn, chickpeas, and beans, as well as to determine their mutagenic potential.
View Article and Find Full Text PDFAnalysis of functional effects of a mixture of five pesticides using a ray design.
Environ Toxicol Pharmacol
November 2004
Solveritas, L.L.C., Richmond, VA 23219, USA.
The protection of human health from the adverse effects of cumulative environmental exposure to chemical mixtures is an important issue. Of particular interest is the detection and characterization of interaction among chemicals in complex mixtures. Response surface methodology, often supported by factorial designs, is the classical statistical experimental approach.
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!