title: Effects of anodic oxidation of a substoichiometric titanium dioxide reactive electrochemical membrane on algal cell destabilization and lipid extraction.
abstract: Efficient algal harvesting, cell pretreatment and lipid extraction are the major steps challenging the algal biofuel industrialization. To develop sustainable solutions for economically viable algal biofuels, our research aims at devising innovative reactive electrochemical membrane (REM) filtration systems for simultaneous algal harvesting and pretreatment for lipid extraction. The results in this work particularly demonstrated the use of the Ti4O7-based REM in algal pretreatment and the positive impacts on lipid extraction. After REM treatment, algal cells exhibited significant disruption in morphology and photosynthetic activity due to the anodic oxidation. Cell lysis was evidenced by the changes of fluorescent patterns of dissolved organic matter (DOM) in the treated algal suspension. The lipid extraction efficiency increased from 15.2 ± 0.6 g-lipidg-algae(-1) for untreated algae to 23.4 ± 0.7 g-lipidg-algae(-1) for treated algae (p<0.05), which highlights the potential to couple algal harvesting with cell pretreatment in an integrated REM filtration process.
authors.affiliation: John A. Reif, Jr. Department of Civil & Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States.
authors.forename: Likun
authors.initials: L
authors.lastname: Hua
authors.affiliation: Department of Chemical Engineering, University of Illinois at Chicago, Chicago, IL 60607, United States.
authors.forename: Lun
authors.initials: L
authors.lastname: Guo
authors.affiliation: Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, United States.
authors.forename: Megha
authors.initials: M
authors.lastname: Thakkar
authors.affiliation: Research Center of Environmental Engineering & Management, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China.
authors.forename: Dequan
authors.initials: D
authors.lastname: Wei
authors.affiliation: John A. Reif, Jr. Department of Civil & Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States.
authors.forename: Michael
authors.initials: M
authors.lastname: Agbakpe
authors.affiliation: John A. Reif, Jr. Department of Civil & Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States.
authors.forename: Liyuan
authors.initials: L
authors.lastname: Kuang
authors.affiliation: John A. Reif, Jr. Department of Civil & Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States.
authors.forename: Maraha
authors.initials: M
authors.lastname: Magpile
authors.affiliation: Department of Chemical Engineering, University of Illinois at Chicago, Chicago, IL 60607, United States.
authors.forename: Brian P
authors.initials: BP
authors.lastname: Chaplin
authors.affiliation: Research Center of Environmental Engineering & Management, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Tao
authors.affiliation: Department of Civil and Environmental Engineering, The George Washington University, Washington, DC 20052, United States.
authors.forename: Danmeng
authors.initials: D
authors.lastname: Shuai
authors.affiliation: Research Center of Environmental Engineering & Management, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China.
authors.forename: Xihui
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, United States.
authors.forename: Somenath
authors.initials: S
authors.lastname: Mitra
authors.affiliation: John A. Reif, Jr. Department of Civil & Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States. Electronic address: wzhang81@njit.edu.
authors.forename: Wen
authors.initials: W
authors.lastname: Zhang
mesh_terms: D056804:Biofuels; D055664:Electrochemical Techniques; D004566:Electrodes; D005374:Filtration; D008055:Lipids / Q000302:isolation & purification*; D010084:Oxidation-Reduction; D044444:Scenedesmus / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D056804:Biofuels; D008055:Lipids; C009495:titanium dioxide; D014025:Titanium
keywords: Algal harvesting; Algal pretreatment; Lipid extraction; Membrane separation; REM