Value-added bioplastics from services of wastewater treatment

Arcos-Hernández, Mónica V.; Montano-Herrera, Liliana; Janarthanan, Om Murugan; Quadri, Luca; Anterrieu, Simon; Hjort, Markus; Alexandersson, Tomas; Karlsson, Anton; Karabegovic, Lamija; Magnusson, Per; Johansson, Peter; Bengtsson, Stina; Morgan-Sagastume, Fernando; Vegt, O. de; Laycock, Bronwyn; Pratt, Steven; Halley, P. J.; Lant, Paul; Werker, Alan

doi:10.2166/wpt.2015.063

Cited by 24 publications

(13 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Very few examples have reported PHA production and characterization from larger plant dedicated to waste management and services of wastewater treatment. In this context, PHA with M w of 400-500 kDa has been produced from surplus full-scale activated sludge [9,40]. There are no examples describing the pilotscale MMC-PHA production and characterization from OFMSW-WAS mixture as carbon source.…”

Section: Viscosimetry Average Molecular Weightmentioning

confidence: 99%

Downstream processing and characterization of polyhydroxyalkanoates (PHAs) produced by mixed microbial culture (MMC) and organic urban waste as substrate

Lorini

Martinelli

Pavan

et al. 2020

Biomass Conv. Bioref.

View full text Add to dashboard Cite

The utilization of food waste and sewage sludge as organic substrate from urban context for the synthesis of microbial polyhydroxyalkanoates (PHAs) has been only recently investigated at pilot scale. Within this context, two stabilization methods have been found for preserving the amount of PHA intracellularly produced by open mixed microbial culture (MMC): thermal drying and wet acidification of the biomass at the end of PHA accumulation process. The extracted PHA from the two differently stabilized biomasses was then characterized with regard to chemical composition, molecular weight, and thermal properties. The polymer contained two types of monomers, namely 3-hydroxybutyrate (3HB) and 3-hydroxyvalerate (3HV) at a relative percentage of 93.0–79.8 and 7.0–20.2 w/w, respectively. PHA extracted from wet-acidified biomass had higher average molecular weights (Mw) of 370–424 kDa while PHA recovered from thermally stabilized dried biomass had a 3-fold lower Mw (on average). The PHA decomposition temperatures Td10% and Tdmax were in the range 260–268 °C and 269–303 °C, respectively, not dependent on the monomeric composition or molecular weight. Thermal properties such as melting temperature (Tm1 132–150 °C; Tm2 155–167 °C) and melting enthalpy (26–70 J/g) were quantified in a relatively broad range according to the different stabilization-extraction method and obtained composition.

show abstract

Section: Viscosimetry Average Molecular Weightmentioning

confidence: 99%

Downstream processing and characterization of polyhydroxyalkanoates (PHAs) produced by mixed microbial culture (MMC) and organic urban waste as substrate

Lorini

Martinelli

Pavan

et al. 2020

Biomass Conv. Bioref.

View full text Add to dashboard Cite

show abstract

“…Production is conducted today by industrial pure culture fermentation; however, the processes vary in terms of substrate choice, bacterial strain, type of PHA, and method of integration. The scientific literature is rich with intent to establish production methods at reduced costs, including but not limited to the use of wastes and industrial residues as feedstocks, the use of mixed culture bioprocess, and the integration of PHA production with wastewater treatment services [37,38,39,40].…”

Section: Markets and Production Capacities For Wood-pha Compositesmentioning

confidence: 99%

Wood-PHA Composites: Mapping Opportunities

et al. 2018

View full text Add to dashboard Cite

Polyhydroxyalkanoate (PHA) biopolymers are emerging as attractive new sustainable polymers due to their true biodegradability and highly tuneable mechanical properties. However, despite significant investments, commercialisation barriers are hindering the capacity growth of PHA. In this work, we investigated the market potential for wood plastic composites (WPCs) based on PHAs. We considered the latest global production capacity of PHAs, estimated at 66,000 tonnes/year, and examined the implications of using PHAs for WPC production on the WPC market. Results indicate that a hypothetical usage of the current global PHA production for WPC manufacture would only represent the equivalent of 4.4% of the global WPC market, which is currently experiencing a 10.5% compounded annual growth rate. An economic assessment revealed that a wood-PHA composite as a drop-in alternative WPC product could cost as little as 37% of the cost of its neat PHA counterpart. Thus, WPCs with PHA offer a means to access benefits of PHA in engineering applications at reduced costs; however, further developments are required to improve strain at failure. The successful adoption of wood-PHA composites into the market is furthermore reliant on support from public sector to encourage biodegradable products where recycling is not a ready solution.

show abstract

“…PHA production processes based on activated sludge (or mixed microbial cultures, MMCs) and using wastewater as carbon source have been widely investigated to produce PHAs more economically [3,4]. MMC PHA production processes can create synergistic benefits by integrating the regional needs of municipal and industrial wastewater treatment with a growing demand for biobased raw materials in regional, renewable-resource value chains [5,6].…”

Section: Introductionmentioning

confidence: 99%

Influence of temperature on mixed microbial culture polyhydroxyalkanoate production while treating a starch industry wastewater

Grazia

Quadri

Majone

et al. 2017

Journal of Environmental Chemical Engineering

View full text Add to dashboard Cite

Influence of temperature on mixed microbial culture polyhydroxyalkanoate production while treating a starch industry wastewater, Journal of Environmental Chemical Engineeringhttp://dx.Engineering (Brisbane, Queensland, Australia); 4 Promiko AB (Lomma, Sweden).Corresponding author: Alan Werker (alan@werker.se) Graphical abstractHighlights  Enrichment biomass at 15 and 25 °C gave similar PHA accumulation potential  PHA accumulation process robust to temperatures from 15 to 30°C  Kinetics change with temperature according to modified Arrhenius equation  Mixed culture PHA production is more efficient at lower temperatures  Bioprocess is adaptable to anticipated seasonal water temperature changes AbstractThe influence of temperature on the production of enrichment biomass and polyhydroxyalkanoates by activated sludge was evaluated within a practical case study. Two laboratory-scale sequencing batch reactors (SBRs) were operated in parallel over 131 days to treat a wastewater from a potatostarch modification facility, and produce surplus activated sludge biomass with PHA accumulation potential. The SBRs were operated similarly but at different temperatures (15 and 25°C).Temperature did not influence wastewater treatment performance (average 97% COD removal).Replicate PHA accumulation experiments were conducted on the SBR surplus biomass at 15, 20, 25 and 30°C. Surplus biomass accumulated PHA with acetic acid to between 60 and 65%, gPHA/gVSS for all temperatures tested and with estimated Arrhenius temperature coefficients (θ) of 1.048 for the PHA production, and 1.062 for the COD consumption specific rates. The MMC PHA production process was adaptable within a common range anticipated for seasonal fluctuation of temperature for the influent wastewater and PHA production feedstocks without loss of performance. This outcome suggests a broad range in the practical feasibility and reliability with MMC method and process implementations. PHA production was predicted to be more efficient at lower temperatures. Strategies can be engineered in the bioprocess design and operations to accommodate for temperature shifts in practical applications of PHA production as a route to resource recovery from organic waste management services.

show abstract

Value-added bioplastics from services of wastewater treatment

Cited by 24 publications

References 21 publications

Downstream processing and characterization of polyhydroxyalkanoates (PHAs) produced by mixed microbial culture (MMC) and organic urban waste as substrate

Downstream processing and characterization of polyhydroxyalkanoates (PHAs) produced by mixed microbial culture (MMC) and organic urban waste as substrate

Wood-PHA Composites: Mapping Opportunities

Influence of temperature on mixed microbial culture polyhydroxyalkanoate production while treating a starch industry wastewater

Contact Info

Product

Resources

About