scholarly journals Titania nano-coated quartz wool for the photocatalytic mineralisation of emerging organic contaminants

2017 ◽  
Vol 77 (2) ◽  
pp. 409-416 ◽  
Author(s):  
M. Saracino ◽  
L. Pretali ◽  
M. L. Capobianco ◽  
S. S. Emmi ◽  
M. L. Navacchia ◽  
...  
Keyword(s):  
Organic Contaminants ◽  
High Performance ◽  
Emerging Contaminants ◽  
Wastewater Treatment Plants ◽  
Tap Water ◽  
Quartz Wool ◽  
Emerging Organic Contaminants ◽  
Contaminant Remediation ◽  
Pass Through ◽  
Industrialised Countries

Abstract Many emerging contaminants pass through conventional wastewater treatment plants, contaminating surface and drinking water. The implementation of advanced oxidation processes in existing plants for emerging contaminant remediation is one of the challenges for the enhancement of water quality in the industrialised countries. This paper reports on the production of a TiO2 nano-layer on quartz wool in a relevant amount, its characterisation by X-ray diffraction and scanning electron microscopy, and its use as a photocatalyst under ultraviolet radiation for the simultaneous mineralisation of five emerging organic contaminants (benzophenone-3, benzophenone-4, carbamazepine, diclofenac, and triton X-100) dissolved in deionised water and tap water. This treatment was compared with direct ultraviolet photolysis and with photocatalytic degradation on commercial TiO2 micropearls. The disappearance of every pollutant was measured by high performance liquid chromatography and mineralisation was assessed by the determination of total organic carbon. After 4 hours of treatment with the TiO2 nano-coated quartz wool, the mineralisation exceeds 90% in deionised water and is about 70% in tap water. This catalyst was reused for seven cycles without significant efficiency loss.

Determination of pharmaceutical residues and assessment of their removal efficiency at the Daugavgriva municipal wastewater treatment plant in Riga, Latvia

2016 ◽  
Vol 75 (2) ◽  
pp. 387-396 ◽  
Author(s):  
I. Reinholds ◽  
O. Muter ◽  
I. Pugajeva ◽  
J. Rusko ◽  
I. Perkons ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
High Performance ◽  
Emerging Contaminants ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
High Resolution Mass Spectrometry ◽  
Treatment Plant ◽  
Pharmaceutical Products ◽  
Municipal Wastewater Treatment ◽  
Toxicological Studies

Pharmaceutical products (PPs) belong to emerging contaminants that may accumulate along with other chemical pollutants in wastewaters (WWs) entering industrial and/or urban wastewater treatment plants (WWTPs). In the present study, the technique of ultra-high-performance liquid chromatography coupled to Orbitrap high-resolution mass spectrometry (Orbitrap-HRMS) was applied for the analysis of 24 multi-class PPs in WW samples collected at different technological stages of Daugavgriva WWTP located in Riga, Latvia. Caffeine and acetaminophen levels in the range of 7,570–11,403 ng/L and 810–1,883 ng/L, respectively, were the predominant compounds among 19 PPs determined in the WW. The results indicate that aerobic digestion in biological ponds was insufficiently effective to degrade most of the PPs (reduction efficiency <0–50.0%) with the exception of four PPs that showed degradation efficiency varying from 55.0 to 99.9%. Tests of short-term chemical and enzymatic hydrolysis for PP degradation in WW samples were performed, and the results reflected the complexity of different degradation mechanisms and physicochemical transformations of PPs. The toxicological studies of WW impact on Daphnia magna indicated gradual reduction of the total toxicity through the treatment stages at the WWTP.

Pilot-scale UV/H2O2 study for emerging organic contaminants decomposition

2016 ◽  
Vol 31 (1) ◽  
Author(s):  
Xiaona Chu ◽  
Yan Xiao ◽  
Jiangyong Hu ◽  
Elaine Quek ◽  
Rongjin Xie ◽  
...  
Keyword(s):  
Organic Contaminants ◽  
Emerging Contaminants ◽  
Treatment Process ◽  
Advanced Oxidation Process ◽  
Drinking Water Treatment ◽  
Pilot Scale ◽  
International Travel ◽  
Aqueous Environment ◽  
Emerging Organic Contaminants ◽  
Suitable Treatment

AbstractHuman behaviors including consumption of drugs and use of personal care products, climate change, increased international travel, and the advent of water reclamation for direct potable use have led to the introduction of significant amounts of emerging organic contaminants into the aqueous environment. In addition, the lower detection limits associated with improved scientific methods of chemical analysis have resulted in a recent increase in documented incidences of these contaminants which previously were not routinely monitored in water. Such contaminants may cause known or suspected adverse ecological and/or human health effects at very low concentrations. Conventional drinking water treatment processes may not effectively remove these organic contaminants. Advanced oxidation process (AOP) is a promising treatment process for the removal of most of these emerging organic contaminants, and has been accepted worldwide as a suitable treatment process. In this study, different groups of emerging contaminants were studied for decomposition efficiency using pilot-scale UV/H

scholarly journals Overview of electronic tongue sensing in environmental aqueous matrices: potential for monitoring emerging organic contaminants

2019 ◽  
Vol 27 (2) ◽  
pp. 202-214 ◽  
Author(s):  
Cátia Magro ◽  
Eduardo P. Mateus ◽  
Maria Raposo ◽  
Alexandra B. Ribeiro
Keyword(s):  
Environmental Monitoring ◽  
Organic Contaminants ◽  
Response Times ◽  
Wastewater Treatment Plants ◽  
Low Cost ◽  
Electronic Tongue ◽  
Analytical Techniques ◽  
Fast Response ◽  
Environmental Matrices ◽  
Emerging Organic Contaminants

Emerging organic contaminants (EOC) are synthetic or naturally occurring chemicals that have the potential to enter the environment and cause known or suspected adverse ecological and human health effects. Despite not being commonly monitored, EOC are often detected in effluents and water bodies because of their inefficient removal in conventional wastewater treatment plants. There is a growing concern about the presence and impact of EOC as well as the need for reliable and effective water monitoring using sensors capable of detecting the target molecules in complex media. Due to their specificities, such as fast response times, low cost, portability and user-friendly operation, electronic tongue (e-tongue) systems present some advantages over the traditional analytical techniques (e.g., chromatographic systems) used for environmental monitoring. We reviewed e-tongue sensors, focusing on their ability for real-time environmental monitoring. A bibliometric evaluation was carried out, along with a study of the status of the existing e-tongue systems, how they worked, and their applications in different fields. The potential of e-tongue sensors to detect organic contaminants in aqueous environmental matrices is discussed, with a particular focus on EOC.

A critical review of the occurrence, detection, and treatment of Δ9-tetrahydrocannabinol in aquatic environments

2017 ◽  
Vol 25 (3) ◽  
pp. 255-268 ◽  
Author(s):  
Yu Ri Park ◽  
Allison L. Mackie ◽  
Graham A. Gagnon
Keyword(s):  
Surface Water ◽  
Organic Contaminants ◽  
Solid Phase ◽  
Tap Water ◽  
Analytical Techniques ◽  
Aqueous Solubility ◽  
Treated Wastewater ◽  
Detection Methods ◽  
Aquatic Environments ◽  
Emerging Organic Contaminants

The main psychoactive compound in marijuana, Δ9-tetrahydrocannabinol (THC), and its metabolites are emerging organic contaminants that have been detected in waste and surface waters around the globe. This paper aims to review the recent literature regarding the detection, occurrence, and treatment of THC and its main metabolites, 11-hydroxy-Δ9-tetrahydrocannabinol (THC-OH), and 11-nor-9-carboxy-Δ9-tetrahydrocannabinol (THC-COOH). Detection methods for THC, THC-OH, THC-COOH, and other cannabinoids have advanced in recent years with the development of sensitive analytical techniques (e.g., gas chromatography or liquid chromatography with mass spectrometry). Using online or offline solid phase extraction (SPE) has enabled detection at nanogram and picogram per litre concentrations. THC-COOH has been detected in untreated and treated wastewater up to 2500 and 750 ng·L–1, surface water over 500 ng·L–1, and tap water up to 1 ng·L–1. Adsorption is likely a significant pathway for the removal of THC that is unmetabolized in wastewater or surface water, due to its low aqueous solubility. THC and THC-COOH have been shown to cause oxidative stress to aquatic species. The few studies of potential treatments for THC-COOH have shown that chlorination and UV oxidation lead to potentially form transformation by-products, which would be toxic in aquatic environments.

Analytical Perspectives on Emerging Organic Contaminants in the Aquatic Ecosystem

2020 ◽  
pp. 68-80
Author(s):  
Hossein Miraji ◽  
Othman Chande Othman ◽  
Faustin Ngassapa ◽  
Mureithi Eunice
Keyword(s):  
Organic Contaminants ◽  
Emerging Contaminants ◽  
Solid Phase ◽  
Dynamic Properties ◽  
Phase Extraction ◽  
Solid Phase Micro Extraction ◽  
Future Perspectives ◽  
Emerging Organic Contaminants ◽  
As Solid Phase ◽  
Detection And Quantification

This chapter introduces readers to the background of emerging contaminants by defining emerging contaminants and telling their history and their corresponding effects. It describes the dynamic properties of emerging contaminants such as advection and dispersion, chemistry, and their reactivity behavior. Lastly, it tells the analytical methodologies on sample preparation such as solid phase extraction and solid-phase micro-extraction, detection and quantification of organic ECs, and it proposes future perspectives of emerging contaminants.

scholarly journals Occurrence and Fate of Amoxicillin and Penicillin G Antibiotics in Hospital Wastewater Treatment Plants: A Case Study - Gonbad Kavous, Iran

2021 ◽  
Vol 75 ◽  
Author(s):  
Maryam Golchin ◽  
Mohammadreza Khani ◽  
Mohsen Sadani ◽  
Mehdi Sadeghi ◽  
Mahsa Jahangiri-rad
Keyword(s):  
Wastewater Treatment ◽  
High Performance ◽  
Emerging Contaminants ◽  
Wastewater Treatment Plants ◽  
Oxygen Demand ◽  
Penicillin G ◽  
Septic Tank ◽  
Hospital Wastewater ◽  
Potential Threat ◽  
Hospital Wastewaters

ABSTRACT Release of antibiotics to the environment as a result of wastewater effluent discharge is a cause for concern worldwide, as they pose a potential threat to human health and the earth ecosystem. Penicillin and amoxicillin are widely used antibiotics. Despite their rapid hydrolysis in aqueous matrices, their presence in the environment is widely investigated. The current study reported and analysed the current state of four hospital wastewater treatment plants (WWTPs) in Gonbad Kavous, Iran, during 2019, from the perspective of amoxicillin and penicillin G removals. WWTPs were sampled at various stages of the treatment process to determine at which stage the antibiotics are being removed. Concentrations of amoxicillin and penicillin G in raw wastewater, analysed by HPLC, varied from 0.35 to 1.02 and 0.02-0.31 /AgL-1, respectively. These values reduced in the final effluent, corresponding to overall efficiency in removing the studied antibiotics of 20-60.5%. Anaerobic processes (i.e. septic tank) slightly outperformed aerobic biological processes for both antibiotics' removal, and penicillin G was removed more efficiently than amoxicillin. Effects of wastewater physicochemical properties, including chemical oxygen demand (COD), biochemical oxygen demand (BOD), and total suspended solids (TSS) on antibiotics removal, were also studied. Whereas statistically significant correlations were noticed between COD, amoxicillin and penicillin G removals, their decline showed no correlation with TSS removal. Our study shows that despite the deployment of treatment plants, a considerable amount of antibiotics is released into receiving water bodies, resulting in significant amounts of these pharmaceuticals entering the environment. There is abundant room for further progress in the detection and quantification of pharmaceuticals and other emerging contaminants in hospital wastewaters and their metabolites and biodegradation products. Keywords: amoxicillin; penicillin G; high-performance liquid chromatography; hospital wastewater treatment plants; removal.

scholarly journals Non-Target Screening Method for the Identification of Persistent and Emerging Organic Contaminants in Seafood and Sediment from Jakarta Bay

2015 ◽  
Vol 10 (3) ◽  
pp. 141 ◽  
Author(s):  
Dwiyitno Dwiyitno ◽  
Larissa Dsikowitzky ◽  
Nuri Andarwulan ◽  
Hari Eko Irianto ◽  
Hanifah Nuryani Lioe ◽  
...  
Keyword(s):  
Organic Contaminants ◽  
Emerging Contaminants ◽  
Screening Method ◽  
Polar Compounds ◽  
Perna Viridis ◽  
Linear Alkylbenzenes ◽  
Emerging Organic Contaminants ◽  
Polycyclic Aromatic ◽  
Target Screening ◽  
Technical Products

Identification of persistent and emerging organic contaminants in green mussels (Perna viridis), various fishes, banana shrimp (Penaeus merguiensis) and sediment samples from Jakarta Bay has been employed. A non-target GC-MS screening approach has identified more than 60 individual organic compounds from the whole fractions either non-polar, semi-polar or acidic-polar compounds. The substances comprised as persistent organic pollutants (POPs) including DDT (dichlorodiphenyl trichloroethane) and its metabolites as well as high molecular weight polycyclic aromatic hydrocarbons (HMW-PAHs). Noteworthy, a number of emerging contaminants detected in the present study have never been reported previously either from the same location or from Asian waters. They include some priority contaminants of non-persistence halogens and emission of technical products, such as di-iso-propylnaphthalenes (DIPNs) dichlorobenzene (DCB), dichlorodiphenyl chloroethene (DDMU) and phenylmethoxynaphthalene (PMN). In general, the concentration order of the priority organic contaminants was sediment > green mussel > fishes > shrimp. Further analysis based on the spatial distribution, individual concentrations and bioavailability suggested that some contaminants are applicable as molecular marker for the assessment of anthropogenic emission in Jakarta Bay, i.e. DIPNs, linear alkylbenzenes (LABs), phenylmethoxynaphthalene (PMN), PAHs, dichlorobenzene, DDT and its metabolites.

Emerging investigators series: occurrence and fate of emerging organic contaminants in wastewater treatment plants with an enhanced nitrification step

2018 ◽  
Vol 4 (10) ◽  
pp. 1412-1426 ◽  
Author(s):  
Yue Xing ◽  
Yaochun Yu ◽  
Yujie Men
Keyword(s):  
Wastewater Treatment ◽  
Organic Contaminants ◽  
Wastewater Treatment Plants ◽  
Treatment Processes ◽  
Emerging Organic Contaminants

The goal of this study is to investigate the occurrence and removal of emerging organic contaminants (EOCs) during wastewater treatment processes and understand the role of enhanced nitrification treatment in removing EOCs.

scholarly journals Emerging Organic Contaminants in Chinese Surface Water: Identification of Priority Pollutants

Engineering ◽  
2021 ◽  
Author(s):  
Mengmeng Zhong ◽  
Tielong Wang ◽  
Wenxing Zhao ◽  
Jun Huang ◽  
Bin Wang ◽  
...  
Keyword(s):  
Surface Water ◽  
Organic Contaminants ◽  
Priority Pollutants ◽  
Emerging Organic Contaminants
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