Valorization of Algal Biomass to Produce Microbial Polyhydroxyalkanoates: Recent Updates, Challenges, and Perspectives

Polymers, Год журнала: 2024, Номер 16(15), С. 2227 - 2227

Опубликована: Авг. 5, 2024

Biopolymers are highly desirable alternatives to petrochemical-based plastics owing their biodegradable nature. The production of bioplastics, such as polyhydroxyalkanoates (PHAs), has been widely reported using various bacterial cultures with substrates ranging from pure biowaste-derived sugars. However, large-scale and economic feasibility major limiting factors. Now, algal biomass for PHA offers a potential solution these challenges significant environmental benefit. Algae, unique ability utilize carbon dioxide greenhouse gas (GHG) wastewater feed growth, can produce value-added products in the process and, thereby, play crucial role promoting sustainability. sugar recovery efficiency is variable depending on pretreatment procedures due inherent compositional variability among cell walls. Additionally, yields, composition, properties synthesized vary significantly microbial producers algal-derived Therefore, microalgal pretreatments synthesis copolymers still require considerable investigation develop an efficient commercial-scale process. This review provides overview discusses strategies enhance its properties, focusing managing GHGs sustainable future.

Язык: Английский

---

Unveiling the potential of microalgae for bioplastic production from wastewater – current trends, innovations, and future prospects

Deleted Journal, Год журнала: 2024, Номер 1(1)

Опубликована: Сен. 2, 2024

Bioplastics derived from polyhydroxyalkanoates (PHAs) are among the promising substitutes for unsustainable petroleum-based polymers. PHA-based polymers demonstrate superior chemical and physical properties, such as hydrophobicity, insolubility in water, iso-tacticity, UV resistance, hydrolysis absolute biodegradability. Compared with conventional plastics, bioplastics more beneficial due to their reduced carbon footprint, energy efficiency, biodegradability, biocompatibility, have hence revolutionized polymer industry. However, further research is needed explore novel strategies overcome limitations, decreasing water absorption brittleness, while increasing crystallization ability thermal degradation temperature. These constraints can be addressed by supplementing bioplastic synthesis process reinforcements plasticizers. The development adoption of biopolymers an environmentally friendly economically viable synthetic plastics imperative, considering degree subsequent exhaustion petrochemical supplies worldwide environmental contamination instigated industrial production plastics. goal this appraisal provide in-depth account most recent advancements generation various wastewater streams via use microalgae, harvesting technologies. microalgae higher quality made polymeric biomolecules include based on cellulose, starch, proteins, PHA, polyhydroxybutyrate (PHB), polyethylene (PE), polylactic acid (PLA), poly vinyl chloride (PVC). Various types manufacturing methodologies also been highlighted researchers capitalists alike investigate ways harness these renewable resources sustainable bioplastics. Additionally, innovations, challenges, potential possibilities future, life cycle evaluations addressed.

Язык: Английский

---

Pilot scale-up production of poly(3-hydroxybutyrate) (PHB) from starch-based wastewater: a halogen-free process optimization for polymer recovery.

Journal of Cleaner Production, Год журнала: 2024, Номер 463, С. 142657 - 142657

Опубликована: Май 23, 2024

Язык: Английский

---

A comprehensive comparison between two strategies to produce polyhydroxyalkanoates from domestic sewage sludge

Journal of Cleaner Production, Год журнала: 2024, Номер 468, С. 143052 - 143052

Опубликована: Июнь 29, 2024

Biopolimer materials, such as polyhydroxyalkanoates (PHA), are essential to restrain the use of petroleum-based plastic material fostered by European Union regulation. Despite recent development regarding production PHA, scale-up sewage sludge-based technology is still in its infancy since literature lacks studies on environmental impact process. This work aims stand a pioneer study reporting direct greenhouse gas (GHG) emissions and carbon footprint (CF) two PHA strategies. The strategies, aerobic dynamic feeding (ADF) aerobic/anoxic enrichment (AE/AN), were monitored compared based system's efficiency removing nutrients, PHA's productivity, nitrous oxide CF. produced accounted for 38.21 g g−1 volatile suspended solids (VSS) % 14.54 VSS %, ADF AE/AN, respectively. N2O lower than AE/AN enrichment, 0.39 N2O–N L−1 0.98 L−1, respectively, was CF, which 3.56 kg CO2 day−1 6.91 innovative provides valuable insights into comparing above-mentioned strategies pilot structuring designing future comprehensively considering consequences process life cycle assessments.

Язык: Английский

---

Polyhydroxyalkanoates: Medical Applications and Potential for Use in Dentistry

Materials, Год журнала: 2024, Номер 17(22), С. 5415 - 5415

Опубликована: Ноя. 6, 2024

Polyhydroxyalkanoates (PHAs) are promising biopolymers as an alternative to traditional synthetic polymers due their biodegradability and biocompatibility. The PHA market is blooming in response the growing demand for biodegradable environmentally friendly plastics. These biopolyesters produced degraded by a variety of microorganisms, making them friendly, while offering benefits such biocompatibility (when adequately processed) biodegradability. Their versatility extends various areas, from biomedicine agriculture composite materials, where they pave way significative innovations. In field regenerative medicine, some PHAs have key applications, namely vascular grafts, oral tissue regeneration, development self-healing polymers. addition, potential be used creation dental implant materials medical devices. can also encapsulate hydrophobic drugs, providing approach more targeted effective treatments. To summarize, open new perspectives medicine improving drug delivery ecologically biocompatible solutions aim this review present applications PHA, advantages, disadvantages, indications.

Язык: Английский

---

Extraction of PHA-producing bacteria from bituminous mixtures to improve bitumen properties

Fuel, Год журнала: 2025, Номер 386, С. 134220 - 134220

Опубликована: Янв. 7, 2025

Язык: Английский

---

Biopolymers Derived from Forest Biomass for the Sustainable Textile Industry

Forests, Год журнала: 2025, Номер 16(1), С. 163 - 163

Опубликована: Янв. 16, 2025

In line with environmental awareness movements and social concerns, the textile industry is prioritizing sustainability in its strategic planning, product decisions, brand initiatives. The use of non-biodegradable materials, obtained from non-renewable sources, contributes heavily to pollution throughout production chain. As sustainable alternatives, considerable efforts are being made incorporate biodegradable biopolymers derived residual biomass, reasonable costs, replace or reduce synthetic petrochemical-based polymers. However, commercial deployment these dependent on high biomass availability a cost-effective supply. Residual forest lignocellulosic composition seasonably available at low cost, constitutes an attractive renewable resource that might be used as raw material. Thus, this review aims carrying out comprehensive analysis existing literature source new biomaterials for industry, identifying current gaps problems. Three specific considered: lignin recovered bacterial poly(hydroxyalkanoates) (PHAs) cellulose (BC), which can produced sugar-rich hydrolysates polysaccharide fractions biomass. Lignin, PHA, BC find applications, example, develop fibers technical textiles, thus replacing currently materials. This approach will considerably contribute improving by reducing amount materials upon disposal their impact. Moreover, integration material produce advanced consistent principles circular economy bioeconomy offers potential development innovative industry.

Язык: Английский

---

Alternatives to Conventional Plastics: Polyhydroxyalkanoates (PHA) from Microbial Sources and Recent Approaches – A Review

Process Safety and Environmental Protection, Год журнала: 2025, Номер unknown, С. 106809 - 106809

Опубликована: Янв. 1, 2025

Язык: Английский

---

Toward Sustainable Bioplastics: The Potential of Algal Biomass in PHA Production and Biocomposites Fabrication

Process Biochemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

---

The role of carbon and nitrogen ratio on sewage sludge microbiota for producing polyhydroxyalkanoates

Journal of Environmental Management, Год журнала: 2025, Номер 375, С. 124240 - 124240

Опубликована: Янв. 29, 2025

The products of an advanced sewage sludge fermentation process can be used to generate polyhydroxyalkanoates (PHAs), precursors bioplastics considered excellent candidates for replacing petroleum-derived plastics. aerobic feast-anoxic famine cycling strategy has proven efficient method enriching microbiota with PHA-producing microorganisms. This work evaluated the effect different carbon nitrogen ratios (C/N) 3.5, 2, and 1 g COD/g N modulating structure improve PHA production. study was executed on a pilot plant scale using wasted activated as organic source derived from oxic-settling anaerobic that collects wastewater various facilities at University Palermo campus. production performance monitored over three experimental periods characterized by C/N ratio. results showed lower reduced 20, 24, 26 % w/w PHAs COD/N values 1, 3.5 N, respectively. In parallel, metataxonomic analysis revealed higher abundance microorganisms ratio such Proteobacteria, specifically Betaproteobacteria. addition, increase in fungal diversity decrease decreased. Thus, these findings demonstrate utility metataxonomics elucidating relationships between operating conditions, bacterial achievement specific outputs. insights gained this demonstrated positive correlation ratios, microorganisms, yields.

Язык: Английский

---