Daniel Pisapia
La Salle University
5 Papers
11 Citations
Daniel Pisapia is an academic researcher from La Salle University. The author has contributed to research in topics: Dissolved organic carbon & Drainage basin. The author has an hindex of 4, co-authored 5 publications.
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Papers
Impact of the red mud disposal on several floodplain lagoons of the lower Orinoco River.
Abrahan Mora,Daniel Pisapia,Nirson González,Helga Handt,Cristina Moreau,Yaneth Vásquez,Luisa Márquez,Juan A. Alfonso +7 more
TL;DR: In this article, the effects of red mud spills on several lagoons of the Orinoco River located surrounding the red mud deposits were identified, and the results indicated that the high concentrations of Fe and Mn in sediments can have adverse effects on benthic organisms, according to International Guidelines.
12
•Journal Article
Oxidation of natural graphite in the laboratory and comparison with the synthetic graphite oxide, by means of thermal and spectroscopic techniques.
Daniel Pisapia,Carlos Eduardo Barrios,Manuel Martínez,Katya Reategui,Williams Meléndez,Santiago Marrero,Marcos Escobar +6 more
TL;DR: In this article, a highly crystalline graphite sample isolated from a Sierra Nevada Formation graphitic schist (Precambrian Age) collected at the State of Trujillo, was subject to controlled oxidation in an oven (T~90°C) with a wet oxygen atmosphere through 25, 50 and 75 days of oxidation.
Dynamics of dissolved major (Na, K, Ca, Mg, and Si) and trace (Al, Fe, Mn, Zn, Cu, and Cr) elements along the lower Orinoco River
Abrahan Mora,Jürgen Mahlknecht,Juan Carlos Baquero,Alain Laraque,Juan A. Alfonso,Daniel Pisapia,Laura Balza +6 more
TL;DR: In this paper, the changes in dissolved major and trace element concentrations along the Orinoco River, including the mixing zone between the Apure and Apure rivers, were studied.
The Apure River: geochemistry of major and selected trace elements in an Orinoco River tributary coming from the Andes, Venezuela.
TL;DR: In this article, the analysis of physicochemical variables and selected dissolved elements was performed on the Apure River waters for 15 months, and five important factors were found to control the amount and temporal variability of the dissolved elements: lithology, hydrology, vegetation-floodplain processes, redox conditions and organic complexation.
Caura River basin: Weathering rates, CO2 consumption, and chemistry of major and trace elements in an Orinoco River tributary coming from the Precambrian Guayana Shield, Venezuela
TL;DR: In this article, the geochemistry of dissolved elements in the Caura River and information about weathering rates and associated CO2 consumption in an Orinoco River subbasin were described.