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An Innovative Approach to Attached Cultivation of Chlorella Vulgaris Using Different Materials Publisher Pubmed



Jafari N1 ; Shafiee Alavijeh R2 ; Abdolahnejad A3 ; Farrokhzadeh H1 ; Amin MM4 ; Ebrahimi A4
Authors
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Authors Affiliations
  1. 1. Department of Environmental Health Engineering, Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Department of Chemical Engineering, Isfahan University of Technology, Isfahan, Iran
  3. 3. Department of Environmental Health Engineering, School of Health, Shahid Sadoughi Yazd University of Medical Sciences, Yazd, Iran
  4. 4. Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, 81676-36954, Iran

Source: Environmental Science and Pollution Research Published:2018


Abstract

This article investigates the innovative attached cultivation of Chlorella vulgaris (C. vulgaris) using different materials as an alternative to high capital techniques of harvesting such as centrifugation, flocculation, and filtration. A simple attached algal cultivation system was proposed that was equipped by 10 submerged supporting materials which can harvest algal cells, efficiently. The effect of operational parameters such as light intensity, the rate of aeration, and auto-harvesting time was investigated. A chip, durable, and abundant cellulosic material (Kaldnes carriers covered by kenafs, KCCKs) was proposed for auto-harvesting C. vulgaris cells. The results revealed that optimum aeration rate, light intensity, and auto-harvesting of microalgal cells were 3.6 vvm, 10,548 W/m2, and 12 days, respectively. Six of these KCCKs had the highest biofilm formation percent up to 33%. In this condition, the rate of cell growth increased to 0.6 mg/cm2. Therefore, this system can be used for appropriate auto-harvesting of microalgae in the attached growth systems. C. vulgaris biomass composition is valuable for biodiesel, bioethanol, and animal protein production. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.