This text is part of the discussion about the case of contamination by heavy metals in Santo Amaro, Brazil and the routes of contamination still active in the city. It is presented the point of view of the authors about the questions raised in the text of Prof. Andrade Pinho, presented in this journal issue, as well as the replies considered pertinent by the authors.
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http://dx.doi.org/10.1080/09593330.2013.788044 | DOI Listing |
Heliyon
February 2025
Environmental Science and Technology Research Center, Department of Environmental Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Per- and Poly-fluoroalkyl substances (PFASs) are among the substances that have been widely employed across the world due to their distinct features. These chemicals' great stability in the environment and capacity to be released from consumer goods have demonstrated their existence in all matrices. Additionally, the world's attention has been drawn to these substances' direct relation to human health in recent years.
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March 2025
Universidade Federal da Bahia, Instituto de Química, Campus Ondina, Salvador 40170-270, Bahia, Brazil.
This work reports the determination of mercury and the assessment of health risks in water, river sediments, and soil samples collected in the city of , Brazil, located in a region impacted by gold mining. The mercury determinations were performed using the direct method analyzer (DMA) method, which was carefully validated according to the IUPAC recommendations. Total mercury contents ranged from 0.
View Article and Find Full Text PDFChemosphere
March 2025
Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA. Electronic address:
Anaerobic digestion (AD) is an industrial practice to properly manage and valorize dairy manure, whereas impurities in biogas and excessive nutrients in digestate always require post-treatment. In this study, integration of bio-electrochemical (BEC) treatment with AD of dairy manure was proposed to simultaneously improve biogas production, reduce hydrogen sulfide (HS) release, and remediate nutrients in digestate. A continuous stirred tank reactor (CSTR) and a BEC unit using stainless steel mesh electrodes at applied voltages of 0.
View Article and Find Full Text PDFEnviron Res
March 2025
College of Engineering, China Agricultural University, Beijing, 100083, PR China. Electronic address:
The potential contamination of biogas slurry generated from the anaerobic digestion of kitchen waste (KW) poses a considerable challenge to its safe and effective utilization as a fertilizer. To tackle this problem, a novel route termed "AS-BC" was developed, integrating ammonia stripping (AS), biochar adsorption, and ceramic membrane filtration (CMF) for comprehensive pollutant mitigation. A stepwise optimization was carried out, comparing biochar adsorption investigation, the AS process, and the combined AS + CMF process.
View Article and Find Full Text PDFChemosphere
March 2025
School of Civil and Environmental Engineering, Indian Institute of Technology (IIT) Mandi, Kamand, Himachal Pradesh 175075, India. Electronic address:
Microplastic (MPs, size <5 mm) is an emerging category of contaminants with detrimental effects on human health, climate, and ecology. The atmospheric pathway is a crucial transport route for the migration of MPs from source to receptor locations. This long-range transport leads to the ubiquitous presence of MPs across all environmental matrices and constrains the source-transport pathway-sink interaction.
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