Biodepollution of Paint Manufacturing Industry Waste Water Containing Chromium by Using Coagulation Process
نویسنده
چکیده
Heavy metal, chromium (VI) removal by coagulation using natural coagulant material was investigated in this paper. Chromium occurs naturally in the paint manufacturing industry waste water in many steps of the process. The coagulation and flocculation method is used for chromium removal from waste water using fruits of Opuntia Ficus indica, Fruits of Jatropha gossypifolia and peel of Borassus flabellifier. The effects of coagulant type, pH, initial concentration and dosage on removal efficiency of Chromium are determined by spectrophotometrically after sedimentation and filtration in the effluent. Fruits of Opuntia Ficus indica, effectively removing chromium from effluent and it was determined as the most effective and economic coagulant type because it requires lower amounts than the other coagulants used in this experiment. The study established that water pH has the greatest impact on the removal of iron-organic complexes from water. Ironorganic complexes (including chromium) are best eliminated from water when its pH is from 6.0 to 7.0.
منابع مشابه
COMPARITATIVE STUDY OF ADSORPTION OF Cr(VI) FROM WASTE WATER USING TAPIOCA PEEL AND BANYAN TREE ROOT
One of the most important and toxic heavy metals in wastewater is chromium. Cr (VI) is released from different industrial operations, including metallurgy, leather tanning, paint, textile industries, chemical manufacturing, pulp production, ore and petroleum refining, metal corrosion, electroplating products etc. Hexavalent chromium is toxic, carcinogenic, probably mutagenic and highly soluble....
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