Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 4

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Assessment of heavy metals in wheat plants irrigated with contaminated wastewater

100%
Hasaan N. U., Mahmood Q., Waseem A., Faridullah M. I., Pervez A.
Polish Journal of Environmental Studies
|
2013
|
tom 22
|
nr 1
Untreated discharges from industrial, domestic, and storm waters, agricultural runoff, and other sources significantly affect the quality of irrigation water both on short- and long-term basis. The present study deals with the assessment of heavy metals in irrigation wastewater, soils, and wheat grains irrigated with contaminated water from municipal sources in Abbottabad, Pakistan. The concentrations of most of the metals were found above the threshold limits for irrigation water and food set by international regulations. The concentrations of metals in wheat grains showed a decreasing order of Zn>Fe>Mn>Cu>Pb>Cd>Ni>Cr in samples collected from areas irrigated with municipal wastewater. Grains were found to accumulate in Cr, Ni, and Fe metals, which were beyond recommended dietary limits. It is recommended that treatment facility must be installed to reduce heavy metals and turbidity of the wastewater being used for downstream irrigation.
2

Industrial water contamination and health impacts: an economic perspective

86%
Sayal A., Amjad S., Bilal M., Pervez A., Mahmood Q., Afridi M. A.
Polish Journal of Environmental Studies
|
2016
|
tom 25
|
nr 2
The present study quantifi ed and evaluated the presence of water pollution and its impact on the health of the adjacent human community. Water sampling and household surveying was carried out using a GIS approach using primary data. The quantifi cation of health impact was based on the scientifi c tools of environment, economic theory, econometrics, and statistics. The focus of our study was the impact of lead (Pb) contamination of drinking water from industrial effl uents on population health and utility in Dingi village, adjacent to an industrial estate in Haripur Pakistan. Results of the study showed varying Pb contamination beyond the safe limits set by WHO. Marginal willingness to pay based on probabilities of sickness, medical costs, and avertive costs was estimated at $53 per household yearly. The opportunity cost of leisure ($22) and avertive measures ($54) were also estimated to fi nd the total economic cost born by households ($300). Total annual welfare loss of the Dingi community exposed to Pb contamination and its cost accounted for 4.26 million PKR ($42,000). This welfare quantifi cation extrapolated to other villages can contribute to heavy monetary loss. Policymakers should pay special attention to such polluted areas to adopt mitigation measures to save public health.
3

Biosand filter containing melia biomass treating heavy metals and pathogens

86%
Zhang B., Gao L., Fazal S., Mahmood Q., Laghari M., Sayal A.
Polish Journal of Environmental Studies
|
2016
|
tom 25
|
nr 2
Water contamination poses serious threats to human health and is more prevalent in developing countries. A bio sand filter (BSF) is useful technology for developing nations because of its low cost and good treatment effi ciency. Being a locally available plant species, melia (Melia azedarach) biomass was used in BSF to test its effi ciency for metal and pathogen removal. Different concentrations (2~6 mg/L) of iron and lead and Escherichia coli-contaminated water were passed through a control sand filter (having no plant biomass) and BSF. The results showed that all three contaminants had higher removal rates in the BSF compared to the control sand filter. The removal of E.coli reached up to 100 percent on some days in the BSF, which was not the case with the control sand fi lter. The percent removal of Fe and Pb in BSF was 97.9~99.9% and 31~61%, respectively. Signifi cant turbidity removal was also observed in BSF. Melia biomass is a useful bio-resource that can help to improve water quality in BSF.
4

Role of hydrophobicity in bio-accessibility of environmental pollutants among different organisms

86%
Ashraf M. N., Bakhat H. F., Shah G. M., Arshad H. M., Mahmood Q., Shahid N.
Polish Journal of Environmental Studies
|
2020
|
tom 29
|
nr 5
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.