Evaluation of the Effect of an Industrial Wastewater Sample on Heavy Metals Contaminated Soil
Article Type:
Research/Original Article (دارای رتبه معتبر)

Agricultural and specifically industrial activities have led to the substantial release of toxic heavy metals into the environment posing a major hazard to ecosystem and human health. Today, contamination of soil, groundwater, sediments, surface water and air with hazardous and toxic metal is considered as a serious problem worldwide. In assessment of the risk associated with metal contaminated soils, metal absorption by food chain is one of the major problems. Thus, it is highly important to assess and control metal concentration in industrial wastewater before it isreleased to the natural environments. The presence of heavy metals, such as Ni, Cr, Cu, Cd and Pb, that are phenomenally seen in industrial sawage can be toxic to human and other organisms, even at low concentration. Nowadays, soils in many places have been contaminated with heavy metals and these soils have turned into one of the most important problems specially in disposal areas.
Material and


In this study, in order to investigate the effect of an industrial wastewater on the heavy metals contaminated soil, it was sampled in 4 points and 4 depths including 0-25, 25-50, 50-75 and 75-100 cm, along the soil draine. Soil samples went through a physical and chemical analysis and were assessed for the heavy metal concentration. The electrical coductivity of soil saturation extract was determined by ohm-meter; soil texture was investigated by the Hydrometer method; the lime percentage was detrmined by Titrimetric method; total heavy metals concentration was specified by the acid nitric digestion method; and cation exchangable capacity in soil samples was identified by the Acetate method. Finally, the data analysis was done by SASS.


According to the obtained results and based on the standard limits in agricultural and industrial lands, soil samples were found to be toxic only for Ni, refering to low heavy metal concentration in wastewater samples. Statistical analysis results showed that there is a negative correlation between the soil depth and heavy metal concentration, which refers to low mobility rate of heavy metals specially in soils with a high content of lime and pH.

Journal of Environmental Sciences and Technology, Volume:16 Issue: 4, 2015
437 to 450
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!