scholarly journals Emerging Compounds in Mexico: Challenges for Their Identification and Elimination in Wastewater

2020 ◽  
Author(s):  
José Gustavo Ronderos-Lara ◽  
Hugo Saldarriaga-Noreña ◽  
Pedro Guillermo Reyes-Romero ◽  
Luis Alberto Chávez-Almazán ◽  
Josefina Vergara-Sánchez ◽  
...  
Keyword(s):  
Public Health ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Industrial Applications ◽  
Emerging Pollutants ◽  
The Other ◽  
Personal Hygiene ◽  
Technological Infrastructure ◽  
Emerging Compounds ◽  
Concentration Levels

In recent years, the presence of organic pollutants has received great attention due to their effects on public health and biota. Within this set of compounds, a new range of compounds that are characterized by their high persistence and low degradation have been identified, called Emerging Compounds. Emerging pollutants include a wide variety of products for daily use of different structures, domestic and industrial applications, such as: pesticides, industrial and personal hygiene products, hormones, and drugs, most of which are toxic, persistent and bioaccumulative. A characteristic of these types of pollutants is that current wastewater treatment plants are unable to remove them; they are designed to remove organic matter and nutrients in higher concentrations. In Mexico there is little information on the concentration levels of these compounds, due to the lack of public policies aimed at providing resources to institutions and researchers trained to carry out this type of study. On the other hand, the technological infrastructure of the wastewater treatment plants is insufficient for the country’s demand. This situation represents one of the greatest challenges for the authorities responsible for the management of water resources, in the immediate time if it is intended to preserve said resource and therefore take care of the health of the population.

scholarly journals Biomedical Applications of Biomolecules Isolated from Methanotrophic Bacteria in Wastewater Treatment Systems

Biomolecules ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1217
Author(s):  
Rana Salem ◽  
Ahmed ElDyasti ◽  
Gerald F. Audette
Keyword(s):  
Public Health ◽  
Wastewater Treatment ◽  
Biomedical Applications ◽  
Environmental Science ◽  
Wastewater Treatment Plants ◽  
Electronic Devices ◽  
Drug Carriers ◽  
Industrial Applications ◽  
Methanotrophic Bacteria ◽  
Wastewater Treatment Systems

Wastewater treatment plants and other remediation facilities serve important roles, both in public health, but also as dynamic research platforms for acquiring useful resources and biomolecules for various applications. An example of this is methanotrophic bacteria within anaerobic digestion processes in wastewater treatment plants. These bacteria are an important microbial source of many products including ectoine, polyhydroxyalkanoates, and methanobactins, which are invaluable to the fields of biotechnology and biomedicine. Here we provide an overview of the methanotrophs’ unique metabolism and the biochemical pathways involved in biomolecule formation. We also discuss the potential biomedical applications of these biomolecules through creation of beneficial biocompatible products including vaccines, prosthetics, electronic devices, drug carriers, and heart stents. We highlight the links between molecular biology, public health, and environmental science in the advancement of biomedical research and industrial applications using methanotrophic bacteria in wastewater treatment systems.

scholarly journals Exposure Route of TiO2 NPs from Industrial Applications to Wastewater Treatment and Their Impacts on the Agro-Environment

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1469 ◽  
Author(s):  
Zahra Zahra ◽  
Zunaira Habib ◽  
Sujin Chung ◽  
Mohsin Ali Badshah
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Agricultural Soils ◽  
Wastewater Treatment Plants ◽  
Environmental Safety ◽  
Industrial Applications ◽  
Tio2 Nps ◽  
Potential Exposure ◽  
Exposure Route ◽  
Exposure Pathways

The tremendous increase in the production and consumption of titanium dioxide (TiO2) nanoparticles (NPs) in numerous industrial products and applications has augmented the need to understand their role in wastewater treatment technologies. Likewise, the deleterious effects of wastewater on the environment and natural resources have compelled researchers to find out most suitable, economical and environment friendly approaches for its treatment. In this context, the use of TiO2 NPs as the representative of photocatalytic technology for industrial wastewater treatment is coming to the horizon. For centuries, the use of industrial wastewater to feed agriculture land has been a common practice across the globe and the sewage sludge generated from wastewater treatment plants is also used as fertilizer in agricultural soils. Therefore, it is necessary to be aware of possible exposure pathways of these NPs, especially in the perspective of wastewater treatment and their impacts on the agro-environment. This review highlights the potential exposure route of TiO2 NPs from industrial applications to wastewater treatment and its impacts on the agro-environment. Key elements of the review present the recent developments of TiO2 NPs in two main sectors including wastewater treatment and the agro-environment along with their potential exposure pathways. Furthermore, the direct exposure routes of these NPs from production to end-user consumption until their end phase needs to be studied in detail and optimization of their suitable applications and controlled use to ensure environmental safety.

scholarly journals Enhanced disinfection by-product formation due to nanoparticles in wastewater treatment plant effluents

2015 ◽  
Vol 1 (6) ◽  
pp. 823-831 ◽  
Author(s):  
Jacob W. Metch ◽  
Yanjun Ma ◽  
Amy Pruden ◽  
Peter J. Vikesland
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Product Formation ◽  
Industrial Applications ◽  
Consumer Products

Nanoparticles (NPs) are increasingly being incorporated into consumer products and are being used for industrial applications in ways that will lead to their environmental dissemination via wastewater treatment plants (WWTPs).

scholarly journals Microalgae Water Bioremediation: Trends and Hot Topics

2020 ◽  
Vol 10 (5) ◽  
pp. 1886 ◽  
Author(s):  
Diana Pacheco ◽  
Ana Cristina Rocha ◽  
Leonel Pereira ◽  
Tiago Verdelhos
Keyword(s):  
Public Health ◽  
Wastewater Treatment ◽  
Carbon Sequestration ◽  
Circular Economy ◽  
Cost Effective ◽  
Research Field ◽  
Emerging Pollutants ◽  
Analysis Software ◽  
Treatment Processes ◽  
Microalgae Biomass

The need to reduce costs associated with the production of microalgae biomass has encouraged the coupling of process with wastewater treatment. Emerging pollutants in municipal, industrial, and agricultural wastewaters, ranging from pharmaceuticals to metals, endanger public health and natural resources. The use of microalgae has, in fact, been shown to be an efficient method in water-treatment processes and presents several advantages, such as carbon sequestration, and an opportunity to develop innovative bioproducts with applications to several industries. Using a bibliometric analysis software, SciMAT, a mapping of the research field was performed, analyzing the articles produced between 1981 and 2018, aiming to identifying the hot topics and trends studied until now. The application of microalgae on water bioremediation is an evolving research field that currently focuses on developing efficient and cost-effective treatments methods that also enable the production of add-value products, leading to a blue and circular economy.

Evaluating bioaccumulation of suspected endocrine disruptors into periphytons and benthos in the Tama River

2003 ◽  
Vol 47 (9) ◽  
pp. 71-76 ◽  
Author(s):  
A. Takahashi ◽  
T. Higashitani ◽  
Y. Yakou ◽  
M. Saitou ◽  
H. Tamamoto ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
River Water ◽  
Endocrine Disruptors ◽  
Wastewater Treatment Plants ◽  
Water Environment ◽  
The Other ◽  
Recombinant Yeast ◽  
Bioaccumulation Factors ◽  
17Β Estradiol ◽  
Aquatic Food

There are two major routes through which fish are exposed to endocrine disruptors (EDs); one route is through water that is a habitat; the other is through aquatic food such as algae and benthos. Few studies on the bioaccumulation of EDs in food have been conducted. Therefore, we evaluated the concentration in food of nonylphenol (NP), bisphenol A (BPA) and 17β-estradiol (E2), which were frequently detected in river water and in final discharge of Wastewater Treatment Plants (WWTPs) in Japan. We also evaluated the estrogenicity of samples using recombinant yeast. NP concentrations ranged 0.1-0.4 mg/L in the river water, while they ranged 8-130 mg/kg-wet in the periphytons and 8-140 μg/kg-wet in the benthos. BPA concentrations ranged 0.02-0.15 μg/L in the river water, while they ranged 2-8.8 μg/kg-wet in the periphytons and 0.3-12 μg/kg-wet in the benthos. E2 concentrations ranged 0.0001-0.0076 μg/L in the water, while they ranged 0.09-2.26 μg/kg-wet in the periphytons and <0.01-0.22 μg/kg-wet in the benthos. The estrogenicity ranged 0.0001-0.0464 μg-E2equivalent/L in the water, while it ranged 3.4-66.8 μg-E2equivalent/kg-wet in the periphytons and 7.4-5458 μg-E2equivalent/kg-wet in the benthos. Bioaccumulation factors of NP are estimated as 160-650 for the periphytons, and 63-990 for the benthos, respectively. Bioaccumulation factors of BPA are estimated as 18-650 for the periphytons, and 8-170 for the benthos, respectively. Bioaccumulation factors of E2 are estimated as 64-1,200 for the periphytons, and 100-160 for the benthos, respectively. The ratios of the periphytons and the benthos to the water in terms of the estrogenicity were larger than those in terms of the chemicals. In particularly, the ratio of the benthos to the water is about 106 in the maximum. The results suggest that food may be a more important route for fish exposed to EDs in water environment.

Emerging pollutants in aquatic environments: monitoring of UV filters in urban wastewater treatment plants

2013 ◽  
Vol 5 (2) ◽  
pp. 428-433 ◽  
Author(s):  
Emanuele Magi ◽  
Carlo Scapolla ◽  
Marina Di Carro ◽  
Paola Rivaro ◽  
Kieu Thi Ngoc Nguyen
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Emerging Pollutants ◽  
Aquatic Environments ◽  
Uv Filters ◽  
Urban Wastewater ◽  
Urban Wastewater Treatment

scholarly journals Occurrence and Seasonal Variation of Microplastics in the Effluent from Wastewater Treatment Plants in Qingdao, China

2022 ◽  
Vol 10 (1) ◽  
pp. 58
Author(s):  
Fenghua Jiang ◽  
Menghui Wang ◽  
Jinfeng Ding ◽  
Wei Cao ◽  
Chengjun Sun
Keyword(s):  
Wastewater Treatment ◽  
Seasonal Variation ◽  
Polyethylene Terephthalate ◽  
Marine Environment ◽  
Wastewater Treatment Plants ◽  
The Other ◽  
Chlorinated Polyethylene ◽  
Average Value ◽  
Dominant Part ◽  
Polymer Type

Wastewater treatment plants (WWTPs) are considered as one of the important sources of microplastics (MPs) in the marine environment. In this paper, the characteristics of MPs in the effluent discharged from five WWTPs in Qingdao, China, in winter and summer were analyzed. The results showed that only fibers and fragments were observed, with fibers as a dominant part. Rayon was the most domain polymer type, followed by Polyethylene terephthalate (PET) and chlorinated polyethylene (CPE). The average sizes of fiber MPs were 1010 ± 924 µm and 610 ± 691 µm in winter and summer, respectively. The contents of rayon were higher in summer than in winter. More small and transparent MPs were observed in summer. Rayon abundances ranged from 4.1 to 19.9 items/L and 33.3 to 116.7 items/L, with 12.3 ± 5.6 items/L and 67.6 ± 30.6 items/L as the average value in winter and in summer, respectively. The abundances of other polymer type MPs were 7.23~19.65 items/L with average value of 12.7 ± 4.7 items/L in winter and 12.0~20.0 items/L with 16.8 ± 4.7 items/L in summer. The daily emissions were estimated as 8.38 × 109~4.25 × 1010 items (9.2~27.8 kg) for rayon and 8.0 × 109~1.2 × 1010 items (7.6~5.3 kg) discharged for the other polymer type MPs from the five WWTPs. The results indicated that the seasonal variation of characteristics and emission of MPs in the effluent from WWTPs was mainly caused by increasing discharge of rayon, which may relate to people’s living habits and tourism activities.

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