Impact of wastewater reuse on cobalt status in Egyptian environment

Cobalt is used in the manufacture of alloys, catalysts in the petroleum industry, catalytic converters, and paint pigments. Thus the potential for Co releases into the environment is highly increased. Use of waste sludges and sewage effluent to fertilize and irrigate soils has also increased soil Co concentrations. Total cobalt contents of alluvial delta soil of Egypt show considerable variation ranging from 13.1 to 64.7 ppm. The impact of either wastewater irrigation or industrial activities on soil total Co was obvious due to accumulation of organic matter and solid waste in the surface soil samples. Food Crops and vegetables should not be grown on soil highly contaminated by Co. It is noteworthy that the delayed neutron activation analysis(DNAA) technique could be used successfully for total Co determination due to its high sensitivity. It is quit clearly that dust samples of Cairo City contains higher Co level, as compared to Suez Canal Region(Ismailia, Port Said and El-Suez cities). The high values in Cairo City may be due to the existence of industries around the city and the intensive traffic. To minimize Co environmental hazards, waste effluents should be treated on site. Thus, levels of potentially toxic Co needs to be continuously monitored and should be removed during several treatment processes before the disposal of these wastes.

作 者： M.F.Abdel-Sabour   作者單位： Soil and Water Research Department, Nuclear Research Center, Atomic Energy Authority, Egypt, P.O 17935  刊 名： 環(huán)境科學學報(英文版)  ISTIC SCI 英文刊名： JOURNAL OF ENVIRONMENTAL SCIENCES  年，卷(期)： 2003 15(3)  分類號： X13  關鍵詞： cobalt   environment   Egypt  

【Impact of wastewater reuse on cobalt】相關文章：

Reuse Waste04-26

Impact of Seasalt Deposition on Acid Soils in Maritime Regions04-27

Predication of Fhhh potential in PTA wastewater treatment04-26

A Study of environmental impact on manufacturing products trade in Shandong,China04-26

Study on anaerobic treatment of wastewater containing hexavalent chromium04-26

Evaluation of fungal potentiality for bioconversion of domestic wastewater sludge04-26

Investigation into debris cloud characterizations for oblique hypervelocity impact of projectiles on bumper04-27

Biodegradation kinetic of organic compounds of acrylic fiber wastewater in biofilm04-25

Optimum municipal wastewater treatment plant design with consideration of uncertainty04-26

Treating oil wastewater with pulse electro-coagulation flotation technology04-26