photocatalytic degradation of humic acid by ag/zno nanoparticles under uvc irradiation from aqueous solutions

Authors

محمدتقی قانعیان

mohammad taghi ghaneian معصومه طباطبایی

masoumeh tabatabaee پوران مروتی

pouran morovati محمدحسن احرامپوش

mohammad hassan ehrampoush علی دهقانی

abstract

introduction: humic acid (ha) is one the original disinfection byproducts processors in water treatment. so, removing it is necessary before water chlorination. in the present study, photodegredation of humic acid in water using ag/zno nano particle under uvc irradiation in batch system was investigated. material and methods: photocatalytic study was carried out to evaluate the effect of uvc (15w), irradiation time of (10 - 40min), ph (5 - 9), initial humic acid concentration of (10-50 mg/l) and ag/zno dosage of (0.2 – 0.8 g/l) on humic acid removal. ha concentration was monitored spectrophotometrically by measuring the ha absorbance at 254 nm. results: ha removal efficiency was obtained 88% at ph 7, ag/zno dosage 0.6 g/l, initial humic acid concentration 25 mg/l and irradiation time 40 min. the removal of ha from aqueous solution increased by increasing irradiation time and decreasing initial ha concentration. also, the kinetic study was consistent with pseudo-first order reaction. conclusion: the results showed that photocatalytic degredation process using ag/zno nanoparticles can be used efficiently for ha removal from aqueous solutions.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Photocatalytic Degradation of Humic Acid by Ag/ZnO Nanoparticles under UVC Irradiation from Aqueous Solutions

Introduction: Humic acid (HA) is one the original disinfection byproducts processors in water treatment. So, removing it is necessary before water chlorination. In the present study, photodegredation of humic acid in water using Ag/ZnO nano particle under UVc irradiation in batch system was investigated. Material and Methods: Photocatalytic study was carried out to evaluate the effect of UVc (...

full text

Humic acid removal from aqueous solutions by peroxi-electrocoagulation process

Background: Natural organic matter is the cause of many problems associated with water treatment such as the presence of disinfection by-products (DBPs) and membrane fouling during water filtration. In this study, the performance of the peroxi-electrocoagulation process (PEP) was investigated for the removal of humic acids (HAs) from aqueous solutions. Methods: PEP was carried out for the remov...

full text

Photocatalytic Activity of ZnO Nanoparticles (Bare, Doped and Co-doped with Mg and La) in the Removal of Rhodamine B from Aqueous Solutions by UVC Irradiation

Background & objectives: The organic dyes are environmental pollutants that pour into water sources by industrial wastewater. It is necessary to develop effective methods for removing pollutants. The aim of this study was to evaluate photocatalytic efficiency of bare ZnO nanoparticles doped with Mg and La (1 to 6% by weight) and Mg 5% -La 5% / ZnO and Mg6%-La4% / ZnO nanoparticles in the remova...

full text

Photocatalytic Removal of Acid Blue 113 Dye from Aqueous Solutions Using Zinc Oxide-Kaolin Nanocomposite under Visible Light Irradiation

Background and purpose: Textile industries produce huge amounts of colored wastewater. Synthetic dyes cause serious problems to human health and aquatic organisms due to their toxic and carcinogenic properties. In this study, Acid Blue 113 (AB113), which is stable and persistent against conventional treatment methods was selected as the target contaminant. Materials and methods: The synthesis ...

full text

Photocatalytic Degradation of Bisphenol A from Aqueous Solutions using TiO2 Nanoparticles and UV Illumination

Background and Purpose: Bisphenol A (BPA) is used to make certain plastics and epoxy resins. It is a non-biodegradable compound, and poses health risks to both humans and animals. The purpose of this study was to evaluate decomposition efficiency of BPA from aqueous solutions using UV irradiation. Materials and Methods: In this study, the photodegradation of BPA in water were carrie...

full text

Photocatalytic Degradation of Azo Dye Acid Red 14 from Aqueous Solutions Using MWCNTs Nanocatalyst

Background & Aims of the Study: Azo Dyes are the most hazardous materials in different industries. Dyes and pigments used in industries for applications such as textiles, leathers, papers, foodstuffs, additives, etc. Application amounts of azo dyes in industries which can cause severe health problems in human and environmental pollutant problems. So, color wastewaters decomposition plan are...

full text

My Resources

Save resource for easier access later


Journal title:
مجله تحقیقات سلامت

جلد ۳، شماره ۲، صفحات ۱۵۳-۱۶۱

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023