Phycoremediation of heavy metals by the three-color forms of Kappaphycus alvarezii

• Published in: Journal of hazardous materials Vol. 143; no. 1; pp. 590 - 592
• Main Authors: Suresh Kumar, K., Ganesan, K., Subba Rao, P.V.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 08.05.2007; Elsevier
• Subjects: Adsorption; Applied sciences; Biodegradation, Environmental; Biological and medical sciences; Biosorption; Biotechnology; Color forms; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; Heavy metals; Kappaphycus alvarezii; Marine; Metals, Heavy - chemistry; Methods. Procedures. Technologies; Others; Pigmentation; Pollution; Rhodophyta - chemistry; Various methods and equipments; Kappaphycus alvarezii; Biosorption; Marine; Color forms; Heavy metals; Algae; Color; Heavy metal
• ISSN: 0304-3894; 1873-3336
• DOI: 10.1016/j.jhazmat.2006.09.061

In the present investigation, three living color forms (brown, green and pale yellow) of Kappaphycus alvarezii were examined for their biosorption ability in the laboratory. The brown color form proved to be an excellent metal biosorbent, i.e. it could adsorb good amount of cadmium 3.064 mg/100 g f.wt. and cobalt 3.365 mg/100 g f.wt. It also removed 2.799 mg/100 g f.wt. of chromium. The green color form absorbed 2.684, 3.43 and 2.692 mg/100 g f.wt. of cadmium, cobalt and chromium, respectively. In contrast, the pale yellow form removed almost equal proportion of cadmium 0.961 mg/100 g f.wt. and chromium 0.942 mg/100 g f.wt. It also removed 1.403 mg/100 g f.wt. cobalt. Thus, the living color forms of this seaweed could form an effective biosorbent material for removal of heavy metals.