Health risk assessment of textile effluent reuses as irrigation water in leafy vegetable Basella alba

International Journal of Recycling Organic Waste in Agriculture

مقاله 3، دوره 5، شماره 2، شهریور 2016، صفحه 113-123   

شناسه دیجیتال (DOI): 10.1007/s40093-016-0122-x

نویسندگان

Mashura Shammi¹؛ Mohammad Abul Kashem²؛ Md. Mostafizur Rahman³؛ Md. Delwar Hossain⁴؛ Rashadur Rahman¹؛ M. Khabir Uddin¹

¹Department of Environmental Sciences, Jahangirnagar University, Dhaka, Bangladesh

²Youngone Group, Dhaka Export Processing Zone (DEPZ), Dhaka, Bangladesh

³Faculty of Environmental Earth Science, Graduate School of Environmental Science, Hokkaido University, Sapporo, Japan

⁴Soil Research Development Institute (SRDI), Dhaka, Bangladesh

چکیده

Purpose The aim of this research was to assess the health risk of textile wastewater reuse as irrigation water on leafy vegetable (Basella alba) by comparing variable growth rate in different ration of wastewater and freshwater irrigation and assess their soil-to-plant transfer factor (TF) and health risk index (HRI). Methods Pot experiments were laid out with five treatments including control with three replications with different irrigation schemes with textile wastewater collected from the untreated point source. The irrigation scheme was, 100 % groundwater as control with four treatments as 75 % groundwater: 25 % wastewater, 50 % groundwater: 50 % wastewater, 25 % groundwater: 75 % wastewater and 100 % wastewater. Results Soil-to-plant TF in different treatments including control were in the order of Pb (1.0–1.7)[Cu (1.3–1.5)[Cd (0.8–1.0)[Zn (0.1–1.1). TF values of Pb and Cu in the range from 1 to 1.7 indicating their accumulation in B. alba plants and their potential health risk by dietary exposure. The HRI for individual metal as well as cumulative HRI of the metals was less than unity (0.33) which indicated the consumption of the vegetables was considered to be safe for one harvest. Conclusion Over many seasons of irrigation with wastewater, level of salinity and heavy metals can accumulate on the agriculture land and their long term consumption may link to a chronic health risk. Hence, consumption of these vegetables on regular basis should be avoided

کلیدواژه‌ها

Textile wastewater reuses. Irrigation. Transfer factor (TF). Health risk index (HRI). Basella alba