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Airports and the aviation industry cause regional and global environmental pollution due to their various activities. Therefore, improving the environmental performance has become a global challenge to giving high priority to environmental protection. This study measured and analyzed the essential air pollutants associated with aircraft movement in the Baghdad International Airport (BIA). Responsible for (77%) of the air traffic in Iraq, the largest and most important airport in Iraq, during the restart of the sector after stopping due to the Covid − 19 pandemic, and comparing them with local and global determinants, as well as comparing them with measurements made before the pandemic. The study dealt with selecting reference measurement sites recommended by the International Civil Aviation Organization (ICAO), where gases and particulates were measured in (12) external and internal sites, using advanced portable devices approved by the Iraqi Ministry of Health and Environment. Gases and molecular measurements were made for (45) flight operations, and (570) external and internal measurements were made, and concentrations of some parameters were recorded outside the permissible limits outside, such as: PM₁₀ = 215.8 µg/m3, TSP = 450.5 µg/m3, NO₂ = 3.01 ppm, SO2 = 0.76 ppm, O3 = 1.47 ppm, VOCS = 0.89 ppm, while internal measurements recorded the maximum concentrations at TSP = 21.2 µg/m3, NO₂ = 2.13 ppm, and O3 = 0.66 ppm. This calls for setting up fixed stations for continuous monitoring of air pollutants, conducting periodic checks and implementing the necessary treatments.

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In this paper, an electro-kinetic technique was applied to remove chromium from contaminated soil. This technique is appropriate for the soils with low permeability. Various experiments were carried out under different operating conditions, including various purging solutions. Garlic peels powder (GPP) was used in this study as a cheap adsorbent substance to avert the flow of reverse osmosis, which may affect the removal percentage. The results proved that the removal percentage increased as the pH of the purging solutions decreased. The first three experiments were performed with purging solution at pH of 4, 6, and 8 respectively. The highest removal percentage was 66.3% at pH of 4 compared to the other two experiments at pH of 6 and 8, where the removal percentages were 53.3% and 49.7%, respectively. This paper showed that the percentage of chromium removal decreased along with the voltage. The removal percentage at 1.5 V/cm was 66.3%, while at 1 V/cm was 61%. Garlic peels powder (GPP) is considered as an effective adsorbent material to avert the reverse osmosis flow. Therefore, the use of this material in this study will give a new impression on the application of these products as an absorbent medium.

Wastewater management is considered to be a great challenge, particularly in towns and cities with rapidly growing population. The study aimed to assess the Al-Muamirah WW treatment plant (WWTP), located in the Babylon governorate of Iraq, in terms of its hydraulic loading as a quality performance indicator. The findings showed that there will be a significant deficit in the capacity of the plant of 20%, 32% and 37% in the year of 2024, and will cumulatively arise in 2030 to become 26%, 41.5% and 47.7% for suggested growth rates of 1.27%, 2.5% and 3.95%, respectively. The outcomes of expected amounts of daily discarded wastewater in terms of estimated population were analyzed using the ANOVA test and it was found that the population growth ratio has a significant impact on the generated inflow, as f (2,30) = 3.713, and p= 0.019 < 0.05.