Occurrence and fate of antibiotics and heavy metals in sewage treatment plants and risk assessment of reclaimed water in Chengdu, China

Li, Lingtong; He, Jianxing; Gan, Zhiwei; Pan, Yang

doi:10.1016/j.chemosphere.2021.129730

Cited by 44 publications

(6 citation statements)

References 26 publications

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“…Copper and Fe removal were significantly higher, with the maximum removal efficiencies of 81.68 % ± 0.050 and 84.37 % ± 0.112, respectively, indicating that all of the STPs had a high capacity for eliminating Cu and Fe elements from the influent wastewater. According to a recent study, the presence of biological adsorption in aeration tanks and secondary sedimentation tanks in wastewater treatment plants may aid in the removal of Fe and Cu, and it has also shown a significant influence of biosorption and bioaccumulation on the elimination of Cu and Fe [49]. In contrast, elimination of nickel was very poor in most of the STPs, with the amount entering and exiting the plant being unaltered even after treatment.…”

Section: Removal Efficiency Of Heavy Metalsmentioning

confidence: 99%

Assessment of Heavy Metal Concentrations in Penang, Malaysia’s Wastewater Treatment Plants: A Wastewater-Based Epidemiology Approach

Ruzi

Ishak²,

Abdullah³

et al. 2023

Trends Sci

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Heavy metals and trace metals are among the most prevalent contaminants in sewage. Depending on the concentration and frequency of exposure, certain heavy metals are toxic, carcinogenic, and hazardous to humans. In this study, copper (Cu), nickel (Ni), zinc (Zn), iron (Fe), and cadmium (Cd) levels were measured in the collected wastewater samples from 10 selected domestic sewage treatment plants (STPs) in Penang, Malaysia in December 2021. All metals in the wastewater were determined using the atomic absorption spectrometric (AAS) method followed by the wastewater-based epidemiology (WBE) analysis. The mean concentrations of heavy metals in the wastewater samples were found to be in the following order (unit of mg/L): Fe > Ni > Zn > Cu > Cd (influent), and Fe > Ni > Zn > Cd > Cu (effluent). Among the metals, Fe concentrations were found to be the highest in effluent, with average values at 5.93 ± 5.319 mg/L, slightly over than a maximum permissible Fe concentration. Cadmium level in all STPs was significantly higher when compared to the maximum permissible Cd concentration (0.02 mg/L) allowed by Malaysia’s regulation, with an average of 0.13 ± 0.011 mg/L. Other metals concentration such as Cu, Ni and Zn in wastewater at the studied STPs showed low level and were considered safe. Using the WBE approach, the collected data were then calculated to estimate the population’s exposure consumption to heavy metals. Mass loading demonstrated high Fe exposure in all STPs but low Cd exposure, with the mean exposure of 1,924.86 ± 2451.772 and 46.91 ± 20.936 mg/1000p/d, respectively. Given the World Health Organization’s recommendation for tolerable weekly cadmium intake, the estimated human exposure to Cd in this study was particularly concerning, in addition to the lack of efficiency of Cd removal in the studied STPs. HIGHLIGHTS The order of the heavy metal mean concentrations in wastewater samples was Fe > Ni > Zn > Cu > Cd (influent), and Fe > Ni > Zn > Cd > Cu (effluent) The removal efficiency of the STPs followed the order: Cu > Fe > Zn > Cd > Ni The daily exposure rate of Fe was recorded as the highest exposure rate among other studied heavy metals (1924.7 ± 2451.772 mg/1000p/d) The daily exposure rate of Cd, estimated from the mass loads of total Cd, was found to be the lowest when compared to the other heavy metals (46.91 ± 20.936 mg/1000p/d) GRAPHICAL ABSTRACT

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Section: Removal Efficiency Of Heavy Metalsmentioning

confidence: 99%

Assessment of Heavy Metal Concentrations in Penang, Malaysia’s Wastewater Treatment Plants: A Wastewater-Based Epidemiology Approach

Ruzi

Ishak²,

Abdullah³

et al. 2023

Trends Sci

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“…Nowadays, wastewater remediation is one of the critical issues due to the complexity of water environment, which has been detected to contain various types of chemicals, such as heavy metals, organic matter, etc., posing serious threats to the ecological environment and even human health (Li et al 2021a;Sellaoui et al 2021;Yu et al 2022). Among these pollutants, Tetracycline (TC), an emerging antibiotic, and chromium Cr(VI), a common poisonous heavy metal, are difficult to remove from water by effective methods (Wang et al 2020).…”

Section: Graphical Abstract 1 Introductionmentioning

confidence: 99%

Synergy effect between tetracycline and Cr(VI) on combined pollution systems driving biochar-templated Fe3O4@SiO2/TiO2/g-C3N4 composites for enhanced removal of pollutants

Yang

Dai

Zhao

et al. 2023

Biochar

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Biochar-coupled Fe3O4@SiO2/TiO2/g-C3N4 composites were successfully constructed through simple sol–gel and calcination methods. The composites efficiently removed high-concentration toxic tetracycline (TC) by means of ·OH and ·$${\rm O}_2^{-}$$ O 2 - , whose removal rate exhibited 91.88% during 3 h, and the degradation rate constant reached up to 0.0068 min−1. The excellent performance can be attributed to the high specific surface area, enhanced visible light response, the introduction of magnetic nanoparticles and biochars expediting charge transfer, Z-scheme heterojunction enhancing the spatial separation of photo-generate carriers and, importantly extraordinary adsorption capacity of 147.96 mg g−1. Moreover, the composites showed the most excellent efficiency under the calcination temperature of 450 ℃, and exhibited good stability with tolerance to a wide range of pH and anions. Interestingly, a synergistic photocatalytic effect was discovered in the TC/Cr(VI) combined pollution systems, resulting in significantly improved removal of Cr(VI). Besides, the photocatalytic mechanism and degradation path of tetracycline were also elucidated. All these findings suggested the as-synthesized catalyst was an excellent photocatalyst for removal of TC/Cr(VI)-contaminated water. Graphical Abstract

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“…Researchers are interested in finding durable solutions to environmental monitoring, as the control of toxic substances is a fundamental condition for pollution remediation. Usually, the classical chromatographic [3][4][5] and spectroscopic [6][7][8][9] methods are used to detect contaminants, which are generally characterized by high sensibility and selectiveness. However, these methods are laborious, need several sample preparation steps, use toxic chemicals, and are time-consuming; and the equipment needs well-qualified operators.…”

Section: Introductionmentioning

confidence: 99%

Recent Trends in Biosensors for Environmental Quality Monitoring

Gavrilaș

Ursachi

Perța-Crișan

et al. 2022

Sensors

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The monitoring of environmental pollution requires fast, reliable, cost-effective and small devices. This need explains the recent trends in the development of biosensing devices for pollutant detection. The present review aims to summarize the newest trends regarding the use of biosensors to detect environmental contaminants. Enzyme, whole cell, antibody, aptamer, and DNA-based biosensors and biomimetic sensors are discussed. We summarize their applicability to the detection of various pollutants and mention their constructive characteristics. Several detection principles are used in biosensor design: amperometry, conductometry, luminescence, etc. They differ in terms of rapidity, sensitivity, profitability, and design. Each one is characterized by specific selectivity and detection limits depending on the sensitive element. Mimetic biosensors are slowly gaining attention from researchers and users due to their advantages compared with classical ones. Further studies are necessary for the development of robust biosensing devices that can successfully be used for the detection of pollutants from complex matrices without prior sample preparation.

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Occurrence and fate of antibiotics and heavy metals in sewage treatment plants and risk assessment of reclaimed water in Chengdu, China

Cited by 44 publications

References 26 publications

Assessment of Heavy Metal Concentrations in Penang, Malaysia’s Wastewater Treatment Plants: A Wastewater-Based Epidemiology Approach

Assessment of Heavy Metal Concentrations in Penang, Malaysia’s Wastewater Treatment Plants: A Wastewater-Based Epidemiology Approach

Synergy effect between tetracycline and Cr(VI) on combined pollution systems driving biochar-templated Fe3O4@SiO2/TiO2/g-C3N4 composites for enhanced removal of pollutants

Recent Trends in Biosensors for Environmental Quality Monitoring

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