What does this research mean for the field?

Sequential recovery of polyhydroxyalkanoates (PHA) and extracellular polymeric substances (EPS) from waste-activated sludge is technically feasible and economically viable within a single process train, without compromising PHA extraction performance. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To establish and evaluate a coupled, single-train process for sequentially extracting intracellular polyhydroxyalkanoates and extracellular polymeric substances from waste-activated sludge without prior microbial enrichment.

September 2, 2026Journal of Polymers and the EnvironmentOpen Access

Enhancing Waste-Activated Sludge Valorisation Through Sequential Recovery of Polyhydroxyalkanoates and Extracellular Polymeric Substances

View Full Paper

Ask AI

Bookmark

Authors

AMAntonio Mineo GMGiorgio Mannina

Discussion

Member takes

Overview

Experimental study demonstrates sequential recovery of bioplastics and hydrogels from waste-activated sludge, indicating a cost-effective pathway for wastewater biopolymer production.

Key Points

To establish and evaluate a coupled, single-train process for sequentially extracting intracellular polyhydroxyalkanoates and extracellular polymeric substances from waste-activated sludge without prior microbial enrichment.
Tested biomass harvested from two membrane bioreactor setups: a conventional activated sludge system and a microalgae-sludge co-culture.
Performed direct polyhydroxyalkanoate (PHA) accumulation over 72 hours, extracting the biopolymer in a single step using the bio-based solvent 2-methyltetrahydrofuran.
Precipitated extracellular polymeric substances (EPS) from the acidified supernatant generated during biomass stabilization to evaluate hydrogel formation.
Both sludge configurations achieved ~31% (w/w) PHA accumulation of volatile solids in 72 hours, with 2-methyltetrahydrofuran extraction delivering 62%–66% recovery efficiency and ~65% purity.
EPS recovery from conventional sludge enabled stable hydrogel formation, whereas microalgae addition increased total EPS yield but altered composition and compromised hydrogel stability.
Sequential recovery of both biopolymers was achieved within a single process train at an estimated production cost of < 0.5 € kg⁻¹ PHA-EPS.

Cite This Study

Mineo et al. (2026) studied this question.

synapsesocial.com/papers/6a97e2b1c562ede874ec6f47 https://doi.org/10.1007/s10924-026-03953-w

View Full Paper

Ask AI

Bookmark

September 2, 2026Journal of Polymers and the EnvironmentOpen Access

Enhancing Waste-Activated Sludge Valorisation Through Sequential Recovery of Polyhydroxyalkanoates and Extracellular Polymeric Substances

View Full Paper

Ask AI

Bookmark

Authors

AMAntonio Mineo GMGiorgio Mannina

Discussion

Member takes

Overview

Experimental study demonstrates sequential recovery of bioplastics and hydrogels from waste-activated sludge, indicating a cost-effective pathway for wastewater biopolymer production.

Key Points

To establish and evaluate a coupled, single-train process for sequentially extracting intracellular polyhydroxyalkanoates and extracellular polymeric substances from waste-activated sludge without prior microbial enrichment.
Tested biomass harvested from two membrane bioreactor setups: a conventional activated sludge system and a microalgae-sludge co-culture.
Performed direct polyhydroxyalkanoate (PHA) accumulation over 72 hours, extracting the biopolymer in a single step using the bio-based solvent 2-methyltetrahydrofuran.
Precipitated extracellular polymeric substances (EPS) from the acidified supernatant generated during biomass stabilization to evaluate hydrogel formation.
Both sludge configurations achieved ~31% (w/w) PHA accumulation of volatile solids in 72 hours, with 2-methyltetrahydrofuran extraction delivering 62%–66% recovery efficiency and ~65% purity.
EPS recovery from conventional sludge enabled stable hydrogel formation, whereas microalgae addition increased total EPS yield but altered composition and compromised hydrogel stability.
Sequential recovery of both biopolymers was achieved within a single process train at an estimated production cost of < 0.5 € kg⁻¹ PHA-EPS.

Cite This Study

Mineo et al. (2026) studied this question.

synapsesocial.com/papers/6a97e2b1c562ede874ec6f47 https://doi.org/10.1007/s10924-026-03953-w

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

View Full Paper

Ask AI

Bookmark