Leaching of CCA from Paraserianthus falcataria panels exposed to field conditions at Krishnapatnam harbour, Andhra Pradesh

IRG/WP 06-50241

B Tarakanadha, K S Rao

This study assessed the leaching of copper, chrome and arsenic (CCA) from Paraserianthus falcataria (=Albizia falcataria) panels exposed to marine condition at Krishnapatnam harbour on the east coast of India. Metal loss was assessed in test panels after 6, 12, 24 and 36 months of exposure using Atomic Absorption spectrophotometer (AAS). The metal loss was found slightly higher in panels treated to lower loadings (16 Kg/m3) as compared to those treated to higher loadings (32 Kg/m3) at initial stages for a period of 6 months. The total metal loss in panels treated to lower loadings after 36 months was 32.1%, 22% and 31.8% for copper, chromium, arsenic respectively, while in higher loadings the loss was 28.4%, 25.2% and 28.1% for copper, chromium and arsenic respectively for the same period. Among the three metals, copper and arsenic lost slightly higher levels than chromium and the results are presented.


Keywords: leaching, copper, chromium, arsenic, marine environment

Conference: 06-06-18/22 Tromsoe, Norway


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