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Effective algal harvesting by using mesh membrane for enhanced energy recovery in an innovative integrated photobioelectrochemical system

Author:
Luo, Shuai, Sai Shankar Sampara, Pranav, He, Zhen
Source:
Bioresource technology 2018 v.253 pp. 33-40
ISSN:
0960-8524
Subject:
algae, biomass production, energy, energy recovery, harvesting, mixing
Abstract:
In this work, an innovative design of integrated photobioelectrochemcial system (IPB) and an algal harvesting method based on polyester-mesh membrane (MM) were investigated. The algal growth/harvesting period of 6 days led to the highest surface biomass productivity (SBP) of 0.88 g m−2 day−1 and the highest energy generation of 0.157 ± 0.001 kJ day−1. The harvesting frequency of 3 times in an operational cycle (with three pieces of MM) enhanced the SBP to 1.14 g m−2 day−1. The catholyte recirculation for catholyte mixing resulted in a positive net energy production (NEP) of 0.227 ± 0.025 kJ day−1. Those results have demonstrated the benefits of both using mesh membrane and the new reactor design for algal collection with positive effects on improving IPB performance.
Agid:
5914422