Sustainable multistage process for enhanced productivity of bioplastics from waste remediation through aerobic dynamic feeding strategy: Process integration for up-scaling

Amulya, K.; Jukuri, Srinivas; Mohan, S. Venkata

doi:10.1016/j.biortech.2015.01.070

Cited by 122 publications

(62 citation statements)

References 38 publications

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“…In the 1960s, advances in the material sciences led to the development of plastic materials produced other from natural resources [34], such as the bacterial fermentation of sugars and lipids, and include polyhydroxyalkanoates (PHA), polylactides (PLA), aliphatic polyesters, and polysaccharides [35]. PLA is on the verge of entering into bulk production, while PHA production is between pilot plant and commercial stage [36,37].…”

Section: A Brief Overview Of Plastic Developmentmentioning

confidence: 99%

Microplastics Are Contaminants of Emerging Concern in Freshwater Environments: An Overview

Lambert

Wagner

2017

The Handbook of Environmental Chemistry

227

137

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In recent years, interest in the environmental occurrence and effects of microplastics (MPs) has shifted towards our inland waters, and in this chapter we provide an overview of the issues that may be of concern for freshwater environments. The term 'contaminant of emerging concern' does not only apply to chemical pollutants but to MPs as well because it has been detected ubiquitously in freshwater systems. The environmental release of MPs will occur from a wide variety of sources, including emissions from wastewater treatment plants and from the degradation of larger plastic debris items. Due to the chemical makeup of plastic materials, receiving environments are potentially exposed to a mixture of microand nano-sized particles, leached additives, and subsequent degradation products, which will become bioavailable for a range of biota. The ingestion of MPs by aquatic organisms has been demonstrated, but the long-term effects of continuous exposures are less well understood. Technological developments and changes in demographics will influence the types of MPs and environmental concentrations in the future, and it will be important to develop approaches to mitigate the input of synthetic polymers to freshwater ecosystems.

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Section: A Brief Overview Of Plastic Developmentmentioning

confidence: 99%

Microplastics Are Contaminants of Emerging Concern in Freshwater Environments: An Overview

Lambert

Wagner

2017

The Handbook of Environmental Chemistry

227

137

View full text Add to dashboard Cite

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“…For example, polylactic acid (PLA) is almost on the verge of entering into bulk production, while polyhydroxyalkanoates (PHA) production is between the pilot plant and commercial stages (Amulya et al 2015;Mohan 2016). There is already an increase in the application of polymers based on biological resources.…”

Section: Future Challengesmentioning

confidence: 99%

Ecotoxicity testing of microplastics: Considering the heterogeneity of physicochemical properties

Lambert

Scherer

Wagner

2017

Integr Envir Assess & Manag

237

102

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"Microplastic" is an umbrella term that covers many particle shapes, sizes, and polymer types, and as such the physical and chemical properties of environmental microplastics will differ from the primary microbeads commonly used for ecotoxicity testing. In the present article, we discuss the physical and chemical properties of microplastics that are potentially relevant to their ecotoxicity, including particle size, particle shape, crystallinity, surface chemistry, and polymer and additive composition. Overall, there is a need for a structured approach to the testing of different properties to identify which are the most relevant drivers of microplastic toxicity. In addition, the properties discussed will be influenced by and change depending on environmental conditions and degradation pathways. Future challenges include new technologies that will enter the plastic production cycle and the impact of these changes on the composition of environmental microplastics. Integr Environ Assess Manag 2017;13:470-475. © 2017 SETAC.

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“…Food waste from a canteen was used as feedstock for the acidogenesis of VFA for anaerobic fermentation with Serratia ureilytica isolated from a composite of wastewater treatment. The FW employed in this case consisted of leftovers of boiled rice and vegetables as well as their peelings, cooking oil and cooked meat; the authors found that, when the cycle length of the batch reactor was of 12 h, the final amount of PHA obtained was 23.7% DCW, and the total VFA removal amounted to 88% (Amulya et al, 2015). The same polymer can be synthesized from pineapple peel-derived VFA was developed for fermentation with Ralsthonia eutropha.…”

Section: Bioplastics and Biopolymersmentioning

confidence: 99%

“…Finally, Amulya et al proposed a deeper study through an integrative approach whereby they studied the stages of fermentative acidogenesis with concomitant H 2 production, culture enrichment from the mixed culture, PHA production in a sequencing batch reactor and final separation of the product by extraction. The FW employed in this case consisted of leftovers of boiled rice and vegetables as well as their peelings, cooking oil and cooked meat; the authors found that, when the cycle length of the batch reactor was of 12 h, the final amount of PHA obtained was 23.7% DCW, and the total VFA removal amounted to 88% (Amulya et al, 2015).…”

Section: Bioplastics and Biopolymersmentioning

confidence: 99%

Food waste as a source of value‐added chemicals and materials: a biorefinery perspective

Esteban

Ladero

2018

Int J of Food Sci Tech

126

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Summary As the availability of fossil‐based resources declines, there is an impending necessity of finding alternative feedstock able to secure the production of fuels and chemicals. Exploitation of biomass as renewable source of chemicals is an attractive possibility, in particular the one derived from food waste (FW). Every year, large amounts of waste are generated within or at the end of the food supply chain at the consumers use stage and hence its valorisation attracts great attention. FW has proven a valuable feedstock for its exploitation to produce a wide array of intermediates and products with promising applications in industry, owing to their similar performance with respect to established products. These include organic acids and furans (generally used as platform chemicals to further products); polymers like bacterial cellulose, polyhydroxyalkanoates or chitin; biosurfactants; biolubricants; or nanoparticles. This overview covers the latest trends in chemical, enzymatic and biotechnological processes reported in literature on the production of these chemicals and materials, with a focus on the use of FW as raw material.

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Sustainable multistage process for enhanced productivity of bioplastics from waste remediation through aerobic dynamic feeding strategy: Process integration for up-scaling

Cited by 122 publications

References 38 publications

Microplastics Are Contaminants of Emerging Concern in Freshwater Environments: An Overview

Microplastics Are Contaminants of Emerging Concern in Freshwater Environments: An Overview

Ecotoxicity testing of microplastics: Considering the heterogeneity of physicochemical properties

Food waste as a source of value‐added chemicals and materials: a biorefinery perspective

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