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Enhanced carbon-transfer and -utilization efficiencies achieved using membrane carbonation with gas sources having a range of CO2 concentrations

Journal Article · · Algal Research
 [1];  [2];  [2];  [2]
  1. Arizona State Univ., Tempe, AZ (United States). Biodesign Swette Center for Environmental Biotechnology; Arizona State Univ., Tempe, AZ (United States)
  2. Arizona State Univ., Tempe, AZ (United States). Biodesign Swette Center for Environmental Biotechnology
The economic viability of microalgal biofuels relies on increasing productivity in a cost-effective manner. As microalgal biomass contains > 50% carbon, a high rate of CO2 delivery is required for high productivity, and inefficient CO2 delivery amplifies operating costs. Membrane carbonation using non-porous hollow fiber membranes can ideally deliver CO2 without bubble formation and high carbon transfer efficiency. Because CO2 streams from industrial resources are not 100% CO2, the buildup of inert gasses can significantly lower the CO2 delivery rate when the distal end of the membrane is closed. To overcome the buildup of inert gases, we managed the distal end of the membranes with three different approaches: fully open end, restricted bleed valve, and restricted bleed valve with pH-actuated venting. For all approaches, CO2 was delivered to membranes ondemand based on a pH set point. Evaluating a wide range of CO2 concentrations (10% to 100%), we found that all approaches eliminated the buildup of inert gases, could maintain target pH values and gave the same biomass productivities and carbon distributions. However, carbon transfer efficiency depended on the operation of the distal end. Fully open-end operation gave a poor carbon transfer efficiency because of excessive loss of CO2 from the distal end. However, restricting the exit flow rate to ≤4 cm3 /min mitigated the problems of excessive CO2 loss, but without incurring a large loss of CO2-delivery flux. For the continuous cultivation, combining a restricted bleed valve with pH-actuated venting improved the carbon-transfer efficiency and -utilization efficiencies up to 85% and 67%, respectively, with a sufficient CO2 delivery flux.
Research Organization:
Arizona State University, Tempe, AZ (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0007093; EE0008517
OSTI ID:
1848486
Alternate ID(s):
OSTI ID: 1780224
Journal Information:
Algal Research, Journal Name: Algal Research Journal Issue: C Vol. 52; ISSN 2211-9264
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (29)

Microalgae for the production of bulk chemicals and biofuels journal May 2010
Opportunities for renewable bioenergy using microorganisms journal January 2008
A hollow fiber membrane photo-bioreactor for CO2 sequestration from combustion gas coupled with wastewater treatment: a process engineering approach journal February 2010
Conversion of CO2 into biomass by microalgae: how realistic a contribution may it be to significant CO2 removal? journal August 2012
The effects of limiting nighttime aeration on productivity and lipid accumulation in Scenedesmus dimorphous journal July 2015
Effects of inorganic carbon and pH on growth kinetics of Synechocystis sp. PCC 6803 journal November 2016
Effect of dissolved oxygen concentration on microalgal culture in photobioreactors journal May 2019
Improved CO2 utilization efficiency using membrane carbonation in outdoor raceways journal October 2020
Adding value to carbon dioxide from ethanol fermentations journal May 2010
An efficient system for carbonation of high-rate algae pond water to enhance CO2 mass transfer journal February 2011
The membrane biofilm reactor (MBfR) for water and wastewater treatment: Principles, applications, and recent developments journal October 2012
Evaluation of carbon dioxide mass transfer in raceway reactors for microalgae culture using flue gases journal February 2014
Direct membrane-carbonation photobioreactor producing photoautotrophic biomass via carbon dioxide transfer and nutrient removal journal March 2016
Biogas upgrading and utilization: Current status and perspectives journal March 2018
Sustainability of carbon delivery to an algal biorefinery: A techno-economic and life-cycle assessment journal March 2019
Hydrogen permeability of the hollow fibers used in H2-based membrane biofilm reactors journal July 2012
Characterization of CO2 flux through hollow-fiber membranes using pH modeling journal December 2019
Periodic venting of MABR lumen allows high removal rates and high gas-transfer efficiencies journal September 2017
Biofilms, active substrata, and me journal April 2018
Predicting Dissolved Inorganic Carbon in Photoautotrophic Microalgae Culture via the Nitrogen Source journal August 2015
Selecting CO 2 Sources for CO 2 Utilization by Environmental-Merit-Order Curves journal January 2016
Hydrophobic Gas Transfer Membranes for Wastewater Treatment and Resource Recovery journal September 2019
Advanced Control for Photoautotrophic Growth and CO 2 -Utilization Efficiency Using a Membrane Carbonation Photobioreactor (MCPBR) journal June 2011
Quantitative Uncertainty Analysis of Life Cycle Assessment for Algal Biofuel Production journal December 2012
Emerging microalgae technology: a review journal January 2018
The use of bicarbonate for microalgae cultivation and its carbon footprint analysis journal January 2019
Generic Assignments, Strain Histories and Properties of Pure Cultures of Cyanobacteria journal March 1979
Long-Term Performance of Parallel-Flow, Bubbleless, Hollow-Fiber-Membrane Aerators journal January 1999
The Membrane Biofilm Reactor is a Versa tile Platform for Water and Wastewater Treatment journal September 2007