TECHNICAL AND ECONOMICAL STUDY OF 5 CONSECUTIVE RECOVERY CYCLES FOR HEAVY METALS (CU, CR, NI) BY DRIED MASS OF SARGASSUM

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BARKHORDAR B.; GHIAS ALDIN M.

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Journal: JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY Year:2005 | Volume:- | Issue:25 Page(s): 34-41

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Title

TECHNICAL AND ECONOMICAL STUDY OF 5 CONSECUTIVE RECOVERY CYCLES FOR HEAVY METALS (CU, CR, NI) BY DRIED MASS OF SARGASSUM

Author(s)

BARKHORDAR B. | GHIAS ALDIN M. | Issue Writer Certificate

Keywords

CHROMIUMQ3

COPPERQ3

NICKELQ2

BIOSORPTIONQ3

AND RECOVERYQ3

Abstract

Heavy metals are present in different types of industrial effluents and contribute to environmental pollution. Application of algae for separating the metals from polluted waters and wastewaters is a new and effective method because in this method, there is little slug and the metals and biomass can be recycled. The recycle experiment showed that using HCL (pH=2) and EDTA (4 milli mol), the recovery rates are 75 and 85 percent, respectively. The repeated application of HCL and EDTA in consecutive cycles leads to an increase in the metal remaining in the algae and a decrease in the recovery rate. So, after 5 consecutive cycles, there is a 90% decrease in the recovery rate due to HCL and 65% due to EDTA. In the first cycle, in which the highest amount of heavy metals is recovered, the building cost of the recycling system is about 90 times and the annual investment cost is about 350 times of the value of the recovered heavy metals. As the number of cycles increases, the recovery costs increase, as well. Therefore, due to the low price of heavy metals and biomass and the high price of the recovery system, the recovery of these elements is not economical.

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APA: Copy

BARKHORDAR, B., & GHIAS ALDIN, M.. (2005). TECHNICAL AND ECONOMICAL STUDY OF 5 CONSECUTIVE RECOVERY CYCLES FOR HEAVY METALS (CU, CR, NI) BY DRIED MASS OF SARGASSUM. JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY, -(25), 34-41. SID. https://sid.ir/paper/87370/en

Vancouver: Copy

BARKHORDAR B., GHIAS ALDIN M.. TECHNICAL AND ECONOMICAL STUDY OF 5 CONSECUTIVE RECOVERY CYCLES FOR HEAVY METALS (CU, CR, NI) BY DRIED MASS OF SARGASSUM. JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY[Internet]. 2005;-(25):34-41. Available from: https://sid.ir/paper/87370/en

IEEE: Copy

B. BARKHORDAR, and M. GHIAS ALDIN, “TECHNICAL AND ECONOMICAL STUDY OF 5 CONSECUTIVE RECOVERY CYCLES FOR HEAVY METALS (CU, CR, NI) BY DRIED MASS OF SARGASSUM,” JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY, vol. -, no. 25, pp. 34–41, 2005, [Online]. Available: https://sid.ir/paper/87370/en

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