Solar technology‒closed loop synergy facilitates low-carbon circular bioeconomy in microalgal wastewater treatment

Abstract The circular bioeconomy framework addresses the global transition toward resource-efficient and low-carbon economies. The use of microalgae in sustainable circular bioeconomy largely suffers from energy consumption and underutilization of residual biomass, leading to greenhouse gas (GHG) em...

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Main Authors: Praveen Kuppan, Abinandan Sudharsanam, Kadiyala Venkateswarlu, Mallavarapu Megharaj
Format: Article
Language:English
Published: Nature Portfolio 2023-05-01
Series:npj Clean Water
Online Access:https://doi.org/10.1038/s41545-023-00256-8
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author Praveen Kuppan
Abinandan Sudharsanam
Kadiyala Venkateswarlu
Mallavarapu Megharaj
author_facet Praveen Kuppan
Abinandan Sudharsanam
Kadiyala Venkateswarlu
Mallavarapu Megharaj
author_sort Praveen Kuppan
collection DOAJ
description Abstract The circular bioeconomy framework addresses the global transition toward resource-efficient and low-carbon economies. The use of microalgae in sustainable circular bioeconomy largely suffers from energy consumption and underutilization of residual biomass, leading to greenhouse gas (GHG) emissions. This analysis-based perspective reveals that closed loop microalgal wastewater systems reduce GHG emissions by >50% and enhance valorization of residual biomass for value-added products compared to open loop approach. Integrating solar technologies in closed loop system further reduces GHG emissions by 99% and aligns with 11 UN sustainable development goals, making it a suitable model for a zero-waste and low-carbon circular bioeconomy.
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spelling doaj.art-c94de1e92c99493395106c947f22cd9b2023-05-28T11:07:19ZengNature Portfolionpj Clean Water2059-70372023-05-016111010.1038/s41545-023-00256-8Solar technology‒closed loop synergy facilitates low-carbon circular bioeconomy in microalgal wastewater treatmentPraveen Kuppan0Abinandan Sudharsanam1Kadiyala Venkateswarlu2Mallavarapu Megharaj3Global Centre for Environmental Remediation (GCER), College of Engineering Science and Environment, ATC Building, The University of NewcastleGlobal Centre for Environmental Remediation (GCER), College of Engineering Science and Environment, ATC Building, The University of NewcastleFormerly Department of Microbiology, Sri Krishnadevaraya UniversityGlobal Centre for Environmental Remediation (GCER), College of Engineering Science and Environment, ATC Building, The University of NewcastleAbstract The circular bioeconomy framework addresses the global transition toward resource-efficient and low-carbon economies. The use of microalgae in sustainable circular bioeconomy largely suffers from energy consumption and underutilization of residual biomass, leading to greenhouse gas (GHG) emissions. This analysis-based perspective reveals that closed loop microalgal wastewater systems reduce GHG emissions by >50% and enhance valorization of residual biomass for value-added products compared to open loop approach. Integrating solar technologies in closed loop system further reduces GHG emissions by 99% and aligns with 11 UN sustainable development goals, making it a suitable model for a zero-waste and low-carbon circular bioeconomy.https://doi.org/10.1038/s41545-023-00256-8
spellingShingle Praveen Kuppan
Abinandan Sudharsanam
Kadiyala Venkateswarlu
Mallavarapu Megharaj
Solar technology‒closed loop synergy facilitates low-carbon circular bioeconomy in microalgal wastewater treatment
npj Clean Water
title Solar technology‒closed loop synergy facilitates low-carbon circular bioeconomy in microalgal wastewater treatment
title_full Solar technology‒closed loop synergy facilitates low-carbon circular bioeconomy in microalgal wastewater treatment
title_fullStr Solar technology‒closed loop synergy facilitates low-carbon circular bioeconomy in microalgal wastewater treatment
title_full_unstemmed Solar technology‒closed loop synergy facilitates low-carbon circular bioeconomy in microalgal wastewater treatment
title_short Solar technology‒closed loop synergy facilitates low-carbon circular bioeconomy in microalgal wastewater treatment
title_sort solar technology closed loop synergy facilitates low carbon circular bioeconomy in microalgal wastewater treatment
url https://doi.org/10.1038/s41545-023-00256-8
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AT abinandansudharsanam solartechnologyclosedloopsynergyfacilitateslowcarboncircularbioeconomyinmicroalgalwastewatertreatment
AT kadiyalavenkateswarlu solartechnologyclosedloopsynergyfacilitateslowcarboncircularbioeconomyinmicroalgalwastewatertreatment
AT mallavarapumegharaj solartechnologyclosedloopsynergyfacilitateslowcarboncircularbioeconomyinmicroalgalwastewatertreatment