An Application of Ultrasonic Waves in the Pretreatment of Biological Sludge in Urban Sewage and Proposing an Artificial Neural Network Predictive Model of Concentration DOI Open Access
Atef El Jery, Houman Kosarirad, Nedasadat Taheri

et al.

Sustainability, Journal Year: 2023, Volume and Issue: 15(17), P. 12875 - 12875

Published: Aug. 25, 2023

This research examines whether ultrasonic waves can enhance the hydrolysis, stability, and dewatering of activated sludge from raw urban wastewater. Sampling physical examination that was returned to aeration pond were carried out using guided at frequencies 30 50 kHz for periods 0.5, 1, 3, 5, 10, 15, min. Various tests, including volatile suspended solids, inorganic resistant time, capillary suction total soluble advance further processes stabilization, dehydration samples. According observations, solids a frequency t=15 min raised by 72%. The time in 1 demonstrated drop 29 22%, respectively. It is crucial consider that, 10 kHz, greatest efficiency found. yielded optimum conditions. Finally, artificial neural networks (ANN) are utilized propose predictive models concentration, results also very accurate (MAE=1.37%). Regarding computational costs, ANN took approximately 5% spent on experiments.

Language: Английский

Sonocatalytic performance of Bi2WO6 nanoparticles for degradation of tetracycline antibiotics DOI Creative Commons
Jun Teng,

Saisai Xiong,

Feng Li

et al.

Applied Catalysis O Open, Journal Year: 2024, Volume and Issue: 191, P. 206957 - 206957

Published: May 25, 2024

In this study, Bi2WO6 nanoparticles have been synthesized successfully via a facile hydrothermal method. The structure and morphology of materials were characterized by XRD, SEM, HRTEM, XPS, UV–vis DRS. sonocatalytic activities catalysts placed in sono-reactor (40 kHz 200 W) to investigate the degradation tetracycline antibiotics. effects parameters including ultrasonic power, catalyst dosage, initial concentration, pH values presence anions ions environment on (TC) studied optimize performance. Among all samples, sample E3 showed best activity (around 97%) TC within 120 min optimum conditions. A potentially mechanism was put forward based free radical entrapping experiment

Language: Английский

Citations

8
Application of calcium peroxide in promoting resource recovery from municipal sludge: A review DOI

Mengsha Ma,

Weiyan Duan, Xiao Huang

et al.

Chemosphere, Journal Year: 2024, Volume and Issue: 354, P. 141704 - 141704

Published: March 13, 2024

Language: Английский

Citations

5
Optimized Degradation of Doxycycline in Aqueous Systems Using Calcium Peroxide Nanoparticles via Response Surface Methodology DOI Creative Commons

Nurul Nazihah Amerhaider Nuar,

Siti Nurul Ain Md. Jamil, Thomas Shean Yaw Choong

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: 10(10), P. 10205 - 10219

Published: March 7, 2025

The presence of antibiotic residues in aqueous systems, particularly doxycycline (DOX), is harmful to the environment and public health. In this study, dextran-coated calcium peroxide nanoparticles (DEX@nCPs(DEX)), Fe(II), oxalic acid (OA) were combined improve heterogeneous Fenton-like degradation DOX. X-ray photoelectron spectroscopy (XPS) demonstrated successful synthesis DEX@nCPs(DEX), showing Ca, O, C functional groups associated with dextran. Using response surface methodology a central composite design (RSM-CCD), optimal conditions (DEX@nCPs(DEX) dosage: 2 g/L, pH: 5, contact time: 420 min) achieved 90% DOX removal, which was 20% higher than using DEX@nCPs(DEX)/Fe(II) alone. process followed first-order kinetics rate constant k 1 = 0.0047 min-1. Model validation showed high predictive accuracy (R 0.996; adjusted R 0.987). Scavenger photoluminescence analyses revealed hydroxyl radicals (•OH) be primary reactive species, accounting for over 80% activity. DEX@nCPs(DEX)/Fe(II)/OA system offers promising approach mitigating pharmaceutical pollutants water, contributing more sustainable environmental management practices.

Language: Английский

Citations

0
An Application of Ultrasonic Waves in the Pretreatment of Biological Sludge in Urban Sewage and Proposing an Artificial Neural Network Predictive Model of Concentration DOI Open Access
Atef El Jery, Houman Kosarirad, Nedasadat Taheri

et al.

Sustainability, Journal Year: 2023, Volume and Issue: 15(17), P. 12875 - 12875

Published: Aug. 25, 2023

This research examines whether ultrasonic waves can enhance the hydrolysis, stability, and dewatering of activated sludge from raw urban wastewater. Sampling physical examination that was returned to aeration pond were carried out using guided at frequencies 30 50 kHz for periods 0.5, 1, 3, 5, 10, 15, min. Various tests, including volatile suspended solids, inorganic resistant time, capillary suction total soluble advance further processes stabilization, dehydration samples. According observations, solids a frequency t=15 min raised by 72%. The time in 1 demonstrated drop 29 22%, respectively. It is crucial consider that, 10 kHz, greatest efficiency found. yielded optimum conditions. Finally, artificial neural networks (ANN) are utilized propose predictive models concentration, results also very accurate (MAE=1.37%). Regarding computational costs, ANN took approximately 5% spent on experiments.

Language: Английский

Citations

4