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Number Concentrations And Size Distributions Of Nanoparticles During The Use Of Hand Tools In Refurbishment Activities
(Journal Of Nanoparticle Research, 2018-09-17)
Hand tools, such as a sledgehammer, are widely used in refurbishment activities; nonetheless, there is very little knowledge on nanoparticle generation. We measured particle number size distributions (PSDs) and concentrations ...
Implications of iron nanoparticles in spontaneous coal combustion and the effects on climatic variables
(Universidad de la Costa, 2020-04-19)
Atmosphere, water, and soil contamination with toxic compounds is a recurrent issue due to environmental disasters, coal burning, urbanization, and industrialization, allf of which have contributed to soil contamination ...
Preparation of alumina-supported Fe-Al-La composite for fluoride removal from an aqueous matrix
(Springer Science + Business Media, 2023)
Using groundwater for human consumption is an alternative for places with
no nearby surface water resources. Fluoride is commonly found in
groundwater, and the consumption of this water for a prolonged time in
concentrations ...
Enhanced adsorption of ketoprofen and 2,4-dichlorophenoxyactic acid on Physalis peruviana fruit residue functionalized with H2SO4: adsorption properties and statistical physics modeling
(Elsevier, 2022-10-01)
In this research, a functionalization of Physalis peruviana biomass with H2SO4 and its application in the adsorption of ketoprofen and 2,2-dichlorophenoxyactic acid is reported. In particular, the adsorption properties of ...
Geochemical fractionation of hazardous elements in fresh and drilled weathered South African coal fly ashes
(Corporación Universidad de la Costa, 2020)
The chemical reactions of dry-disposed ash dump, ingressed oxygen, carbon dioxide, and infiltrating rainwater affect mineralogical transformation, redistribution, and migration of chemical species. Composite samples of ...
Nanometric particles of high economic value in coal fire region: Opportunities for social improvement
(Universidad de la Costa, 2020-02-10)
Spontaneous coal combustion in the La Guajira coals was studied for the presence of carbon nanophases (e.g., carbon nanotubes), occurrence of rare earth elements (REEs) in them, and the probable mechanisms for concentration ...
Hazardous elements and amorphous nanoparticles in historical estuary coal mining area
(Geoscience Frontiers, 2019)
In Brazil, intense coal exploitation activities have led to environmental deterioration, including soil mortification, water contamination, loss of ecosystem, and atmospheric contamination. In addition, considerable ...
High-performance removal of 2,4-dichlorophenoxyacetic acid herbicide in water using activated carbon derived from Queen palm fruit endocarp (Syagrus romanzoffiana)
(Corporación Universidad de la Costa, 2021-02)
In this work, an activated carbon sample with a high adsorptive performance for the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) was prepared from queen palm endocarp (Syagrus romanzoffiana) by pyrolysis process. The ...
Portable dehumidifiers as an original matrix for the study of inhalable nanoparticles in school
(Universidad de la Costa, 2020-06-06)
Good air quality is documented as a significant factor of social justice. The human health hazards associated with air pollution are not distributed equally across cities; the most vulnerable people are more exposed to ...
Fire resistance performance of concrete-PVC panels with polyvinyl chloride (PVC) stay in place (SIP) formwork
(Universidad de la Costa, 2019-07-26)
Stay-in-place (SIP) formwork is a more-practical alternative to traditional steel or wood formworks due to its improved constructability and durability. The aim of this paper was to study the fire resistance performances ...