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American Journal of Environmental Protection
Number of Followers: 9

This is an Open Access Journal

Open Access journal
ISSN (Print) 2328-7241 - ISSN (Online) 2328-7233
Published by Science and Education Publishing

[75 journals]

Influence of Solar Radiation on Questionable Gasolines Sold in
N’Djamena: ASTM D86 Distillation Analysis and Standardized Tests Related
to Atmospheric Pollution and Corrosion
- Authors: Haroun Ali Adannou; Mahamat Ateib Ibrahim, Saka Goni, Abdelhamid Issa Hassane, Nayaou Kadidja KAMANE, Abdel-Hamid Mahamat Ali, Simon NGOSS III
  Pages: 1 - 12
  Abstract: In this work we experimented with an analysis of fraudulent gasoline distillation sold in N’Djaména. The first experiment carried out on the storage of gasolines in polymer cans showed that the nature of gasoline changed in color and density. The cans were also denatured depending on the type of gasoline and the weather. Laboratory analysis of the distillation for commercial specification gave different results compared to refinery gasoline. Several tests according to NF and ASTM standards have been carried out and the results show that gasoline sold illegally is a great danger to the population and to sellers. To do this, we characterized the duration of insolation in N’Djaména in order to be able to analyze the influence of solar radiation as a function of its heat on the essences stored and sold illegally in the city. The analysis results give us a figure of 3030.91 ± 176.33 hours of sunshine per year corresponding to 8.9 hours per day. An observation of the pyranometer and simulations of the Streamer radiative transfer code made it possible to characterize the seasonal variability of the global solar energy potential at the N’Djamena station at 4.71 kWh / m2 / d. The maxima are recorded in spring with values above 5.70 kWh / m2 / day, and the minima in winter with values below 4 kWh / m2 / day. We then measured the air quality with a Purple Air sensor and the results confirmed the presence of particles that could affect human health. Our research obeys two objectives: on the one hand, knowledge of the negative impact and danger of hydrocarbons stored and traded illegally, and on the other hand, the development of regulations in force to stop this danger.
  PubDate: 2021-04-23
  DOI: 10.12691/env-9-1-1
  Issue No: Vol. 9, No. 1 (2021)
Technology Development for Removing Arsenic (III) by Iron Dust Collected
from Rusted Iron Devices
- Authors: Vijayarani Allam; Sailaja Budati Bala Venkata, Sirisha David
  Pages: 13 - 22
  Abstract: Heavy metal contamination in water resources is on the rise in developing countries, causing negative health impact in the population. Metal factories, industrial fertilizers, and pesticides spill inorganic pollutants into water bodies. Arsenic is an inorganic pollutant that accumulates in drinking water and causes a variety of diseases such as arsenicosis including melanosis and keratosis, cancer and disruptions in the human system's various functions. Despite various pollution-control technologies, the problem continues to exist in fast-growing countries. The aim of the arsenic adsorptive studies is to encourage arsenic remediation technologies that are both cost-effective and environmentally friendly. To do so, the properties of iron dust are investigated in order to use it as an adsorbent in the arsenic adsorption phase in this study. The percentage of adsorption (89% - 68%) onto iron dust increased with an increase in the adsorptive parameters of contact time, dose, initial concentration, pH, and temperature, indicated the competence of the arsenic removal. Protonation, deprotonation, hydroxyl ion substitution, surface complexation, electrostatic attraction, electrostatic repulsion, and ion exchange were all involved in the effect of pH on arsenic adsorption behaviour. The adsorption isotherm models adequately illustrated the experimental results, implying that arsenic adsorption with Iron dust was better suited to the Freundlich model and reasonably adapted to the Temkin isotherm model in linear form, with R2 0.999 and 0.953, respectively. Because of the applicability of kinetics, Arsenic removal adopted the pseudo second kinetic order. Thermodynamics revealed that the arsenic adsorption process was instinctive and beneficial, with negative values ΔGo -0.104, ΔHo -0.295 indicating an exothermic process, and ΔSo +90 indicating an associative mechanism at the interface. The RL>1 revealed the arsenic metal ion onto iron dust was satisfactory. Finally, the above data indicated that the abundantly available iron dust can be treated as an adsorbent that is economically viable for removing metal ions from different sources of water.
  PubDate: 2021-05-27
  DOI: 10.12691/env-9-1-2
  Issue No: Vol. 9, No. 1 (2021)

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