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Adsorption behavior of zinc and cadmium ion on granular activated carbon in singular and binary systems and the influence of nitrilotricetic acid as a complexing agent.

Adsorption characteristics of zinc and cadmium ion on granular activated carbon have been studied in dynamic and equilibrium aspects and singular and binary adsorption behavior were compared. Based on the van't Hoff equation, reaction orders and rate constants were observed to increase as initial concentration of adsorbate was raised for both metal ions. Adsorption of Zn and Cd ion was found to increase with temperature, and this endothermic nature of adsorption reaction was further verified by thermodynamic calculation. Taking nitrilotriacetic acid (NTA) as a ligand, the influence of complexi

Metal leachability from sewage sludge-amended Thai soils.

Determining mobility and availability of metals in sewage sludge amended soil is an environmental concern. Potential leachability and bioavailability of metals following sludge applied to agricultural soil was evaluated. Geochemical forms of metal occurring in sludge-amended soil were subjected to fractionation for understanding heavy metal transformation and remobilization in sludge-amended soil. Metal leachability was determined using reconstructed soil profiles where dewatered sewage sludge was incorporated into the surface 0-10 cm of soil. Two-sludge application rates; 150 and 300 kgN/ha,

Occurrence of iodinated x-ray contrast media in domestic effluents and their fate during indirect potable reuse.

This study investigated the occurrence of pharmaceuticals, emphasizing triiodinated benzene derivatives used as X-ray contrast media, in domestic effluents and their fate during subsequent groundwater recharge. Organic iodine measurements were used as a surrogate for triiodinated benzene derivatives. Seven wastewater treatment facilities in Texas, Arizona and California were studied and organic iodine concentrations at these facilities varied between 5 and 40 microg iodine/L. The highest concentrations were observed on weekdays reflecting the common practice of employing X-ray examinations bet

Spray scrubbing of the nitrogen oxides into NaClO2 solution under acidic conditions.

The operating conditions of this study were closed to the typical operating conditions of flue gas desulfurization system in the coal-fired power plant. The objective of this study was to investigate the absorption performance of lean NO in an aqueous solution of acidic sodium chlorite using a bench-scale spraying column. The NO conversion and NOx removal efficiency were increasing with the increasing NO concentration, retention time, sodium chlorite concentration, operating temperature, and decreasing initial pH of solution. As the sodium chlorite concentration were higher than 0.4 M, the NO

Ultrasonic destruction of chloroform and carbon tetrachloride in aqueous solution.

The sonochemical destruction of binary mixtures of chloroform and carbon tetrachloride in aqueous solution at 30 kHz has been studied. The influences of initial concentration, bicarbonate/chloride, and acoustical intensity on the destruction rates have been observed. It was found that the destruction of the two compounds appeared to follow pseudo-first-order reaction kinetics with the current experimental concentration range. The rate constant of chloroform for initial concentration as high as 100.4 mg/L decreased compared to initial concentration 36.13 micrograms/L, when the rate constants of

Electrochemical remediation of trichloroethene-contaminated groundwater using palladized iron oxides.

The objective of this study is to develop electrochemically-enhanced dechlorination of trichloroethene (TCE) using palladized iron oxides minerals for ex situ remediation of contaminated groundwaters. A bench-scale column packed with the palladized iron oxide media connected to a cathode and an anode embedded in a carbon pad was prepared for flow through column tests. Contaminated groundwaters with about 14-16 mg/L TCE were passed from the cathode side to the anode side of the column while the system was supplied with direct current. All of the TCE in the groundwater was dechlorinated even aft

Gas phase reduction of chlorinated VOCs by zero valent iron.

The removal of trichloroethylene (TCE) by reduction with elemental iron was examined in batch reactors representing three phase gaseous systems (Fe0 (solid), water vapor + TCE vapor + air mixture (gaseous), and condensed water on Fe0 surface (aqueous)) and two phase aqueous systems (Fe0 (solid), water (aqueous)) as the reaction medium. Two separate removal mechanisms were found for TCE removal in the gas phase reactors: (1) adsorption onto the Fe0 surface under low relative humidity (RH), and (2) reaction with Fe0 to form other organic compounds, such as ethylene, isomers of dichloroethylene,

An integrated decision support system for the management of petroleum-contaminated sites.

In this study, a decision-support system was developed for providing environmental managers with an integrated way for concisely analyzing and visualizing the subsurface contamination problem as well as a means for evaluating alternative remediation technologies. It integrated contaminant-transport modeling, risk assessment, and remediation-system design within a general framework. The developed system was applied to a site in western Canada that is contaminated by petroleum products. A three-dimensional multiphase multicomponent model was established, which provided a basis for further risk a

Humic acids enhanced removal of aromatic hydrocarbons from contaminated aquifers: developing a sustainable technology.

Contamination by gasoline and diesel fuels is a threat to groundwater resources. Polynuclear aromatic hydrocarbons (PAHs) which can represent up to 60% of volume in diesel fuels are of particular concern because many of them are carcinogenic and they are persistent, especially in oxygen-limited environment. Despite the development of alternative approaches, pump and treat continues to be the leading technology for the remediation of groundwater contaminated by gasoline and diesel fuels. The efficiency of this technology is however limited by the low solubility of the aromatic hydrocarbons. The

An Umbrella Review of Meta-Analyses Evaluating Associations between Human Health and Exposure to Major Classes of Plastic-Associated Chemicals.

Background: Epidemiological research investigating the impact of exposure to plastics, and plastic-associated chemicals, on human health is critical, especially given exponentially increasing plastic production. In parallel with increasing production, academic research has also increased exponentially both in terms of the primary literature and ensuing systematic reviews with meta-analysis. However, there are few overviews that capture a broad range of chemical classes to present a state of play regarding impacts on human health. Methods: We undertook an umbrella review to review the systemati

6-month neurological and psychiatric outcomes in 236 379 survivors of COVID-19: a retrospective cohort study using electronic health records.

BACKGROUND: Neurological and psychiatric sequelae of COVID-19 have been reported, but more data are needed to adequately assess the effects of COVID-19 on brain health. We aimed to provide robust estimates of incidence rates and relative risks of neurological and psychiatric diagnoses in patients in the 6 months following a COVID-19 diagnosis. METHODS: For this retrospective cohort study and time-to-event analysis, we used data obtained from the TriNetX electronic health records network (with over 81 million patients). Our primary cohort comprised patients who had a COVID-19 diagnosis; one ma

Риск системных ревматических заболеваний у людей с раздражающим синдромом кишечника: когортный анализ с глобальной федерацией.

Синдром кишечника (IBS) — широко распространенное расстройство взаимодействия кишечника и мозга, все больше связанное с иммунным и подстрекательским регулированием. Остается неясным, предрасположена ли IBS к системным ревматическим болезням. Methods Мы провели ретроспективное когортное исследование с использованием Глобальной сети сотрудничества TriNetX, которая объединяет анонимные электронные медицинские записи, полученные от более, чем 150 Организации здравоохранения и 150 million Пациенты по всему миру. Взрослые≥18 год) с диагнозом IBS≥2 посещения) между 2015 и 2023 были сопоставлены с соо

Psychiatric disorders in adolescent and young adult cancer survivors in Korea.

BackgroundAlthough adolescent and young adult (AYA) cancer survivors have an increased risk of psychiatric disorders, limited evidence has been suggested. We aimed to determine the risk of psychiatric disorders among AYA cancer survivors.Materials and methodsA retrospective population-based cohort study based on the Korea National Health Insurance Service database was carried out. All men and women aged 15-39 years diagnosed with cancer between 2006 and 2019 (N = 88 965) were included and matched with controls (1 : 4). The prevalence ratios (PRs) of psychiatric disorders were calculated in can

European Code Against Cancer, 5th edition - occupational exposures and cancer.

Occupational exposure to cancer-causing agents is a major, yet preventable, contributor to cancer in Europe and globally. In the European Union (EU), cancer is responsible for nearly half of all work-related deaths, underscoring the critical need for prevention measures. Effective strategies typically involve regulatory and workplace measures aimed at reducing or eliminating exposure risks. Raising awareness of hazardous workplace exposures is essential to empower individuals, foster a culture of prevention, and support effective regulation. The 5th edition of the European Code Against Cancer

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… Occupational exposures in the EU The workplace has historically played a crucial role in identifying carcinogens, as it often involves large groups of individuals exposed to high concentrations of hazardous substances over extended periods, sometimes spanning their entire working lives [ 5 ]. … For example, the European Partnership for the Assessment of Risks from Chemicals (PARC) brings together public authorities, research institutions, and industry to support innovation in chemical risk assessment and promote the substitution of hazardous substances [ 64 ]. …

Update on Occupational Cancer for Better Cancer Prevention and Control.

Occupational cancer remains an ongoing and emerging issue in cancer prevention and control and is more easily preventable in practice than other causes. As of 2024, changes in various aspects, such as methods for estimating the burden of cancer, evidence on novel carcinogens and classification systems, modernization of working conditions, job characteristics, occupational exposure, and societal changes have played a significant role. Furthermore, advances in technology, including wearable devices, exposome, and biomedical technology, offer more precise methods for identifying the associations

Объединения ПФАС и ОХ-ПХБ с риском множественных склерозов и ухудшения состояния здоровья.

Воздействие перфторированных и полифторированных веществ (ПФАС) и гидроксилированных полихлорированных дифенилов (ОН-ПХД) связано с неблагоприятным воздействием на здоровье человека, включая иммунодепрессию. Неизвестно, могут ли эти вещества повлиять на аутоиммунные заболевания. Это исследование было основано на данных о 907 лицах с множественным склерозом (MS) и 907 совпадающих контрольных устройствах, в ходе которых за случаями применения MS велось продольное наблюдение с использованием шведского регистра MS. Мы демонстрируем различия по признаку пола и заболевания в концентрациях сыворотки

Is Transducer Hygiene sufficient when Vaginal Probes are used in the Clinical Routine?

Vaginal ultrasound probes are semi-critical Group A medical products which must be disinfected following the manufacturer's instructions after every patient examination. According to the "Essential Requirements for Medical Devices (Directive 93/42/EEC, Annex I, paragraph 13)" the manufacturer's instructions for use for reusable products must contain suitable instructions for preparation processes. This presumes both an effective and material-compatible method. Evidence of effectiveness must be validated.In the Editorial in issue 1 Ultraschall in der Medizin/European Journal of Ultrasound 2005

Risks related to the domestic laundering of filling station attendant uniforms: advances and uncertainties.

Gasoline is the most common transportation fuel in Brazil, with up to 1% of benzene. Benzene is a health-damaging organic solvent that is extensively used worldwide, being classified as a human carcinogen by the International Agency for Research on Cancer (Group 1). Many workers at filling stations are exposed to benzene, present in gasoline. The main routes of exposure and absorption of benzene are inhalation, oral, and dermal routes. The penetration and maintenance of benzene and other chemicals on personal protective equipment and clothing of workers who manipulate these solvents may increa

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… Occupational Safety and Health Administration (OSHA) Toxic and hazardous substances. Washington, D.C.: OSHA; 2019. [2019 Jul. 16]. Available from: https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=10045&p_table=STANDARDS . 7. Anderson SE, Meade BJ. …

Global health burdens of plastics: a lifecycle assessment model from 2016 to 2040.

BackgroundQuantifying human health impacts throughout plastics lifecycles can inform global action against pollution that promotes sustainability across environmental, economic, and health concerns.MethodsWe combined material flow analysis, using the Plastics-to-Ocean model, with lifecycle assessment (LCA) to quantitatively compare disability-adjusted life-years (DALYs) associated with plastics lifecycles, under different global consumption and waste management scenarios between 2016 and 2040. We estimated global health effects of greenhouse gases, particulate matter, and specific chemical emi

Health Risks from Microplastics in Intravenous Infusions: Evidence from Italy, Spain, and Ecuador.

The rising incidence of microplastics (MPs) is a possible health risk to humans. The present study aims to analyze the presence of MPs in intravenous (IV) infusions and compare MP concentrations from multiple brands. The IV solutions of 29 medical devices (IV-MDs) from seven brands commercialized in Ecuador, Spain, and Italy have been selected under specific consideration to carry out the study. The detection of MPs has been quite obvious in almost all of the samples from brands in the mentioned countries. MP concentrations ranged from 9 to 20 MPs/L in glass containers to 166-299 MPs/L in plas

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… IV-MDs are regulated by a number of international standards, including FDA Guidance on Biocompatibility (ISO 10993-1, use of materials in contact with IV fluids), UNE-EN ISO 14971:2020 (risk management for MD), ECHA REACH (Classification of Hazardous Substances), and UNE-EN ISO 10993-1:2021 (Biological …