Bioconversion of agro-industrial effluents for polyhydroxyalkanoates production using Bacillus subtilis RS1

Rathika, R.; Janaki, V.; Shanthi, K.; Kamala‐Kannan, Seralathan

doi:10.1007/s13762-018-2155-3

Cited by 34 publications

(19 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Otherwise, the production of PHA by the second group is not influenced by the supply of nutrients and is also able to continue to maintain PHA during its growth stage [ 49 ]. Nitshke et al reported that mutant strains of Azotobacter vinelandii , recombinant Escherichia coli and Alcaligenes latus are examples of the bacteria species that belong to this second group [ 50 ].…”

Section: Polyhydroxyalkanoate (Pha)mentioning

confidence: 99%

Recent Advances in the Biosynthesis of Polyhydroxyalkanoates from Lignocellulosic Feedstocks

Vigneswari

Noor

Amelia

et al. 2021

Life

View full text Add to dashboard Cite

Polyhydroxyalkanoates (PHA) are biodegradable polymers that are considered able to replace synthetic plastic because their biochemical characteristics are in some cases the same as other biodegradable polymers. However, due to the disadvantages of costly and non-renewable carbon sources, the production of PHA has been lower in the industrial sector against conventional plastics. At the same time, first-generation sugar-based cultivated feedstocks as substrates for PHA production threatens food security and considerably require other resources such as land and energy. Therefore, attempts have been made in pursuit of suitable sustainable and affordable sources of carbon to reduce production costs. Thus, in this review, we highlight utilising waste lignocellulosic feedstocks (LF) as a renewable and inexpensive carbon source to produce PHA. These waste feedstocks, second-generation plant lignocellulosic biomass, such as maize stoves, dedicated energy crops, rice straws, wood chips, are commonly available renewable biomass sources with a steady supply of about 150 billion tonnes per year of global yield. The generation of PHA from lignocellulose is still in its infancy, hence more screening of lignocellulosic materials and improvements in downstream processing and substrate pre-treatment are needed in the future to further advance the biopolymer sector.

show abstract

Section: Polyhydroxyalkanoate (Pha)mentioning

confidence: 99%

Recent Advances in the Biosynthesis of Polyhydroxyalkanoates from Lignocellulosic Feedstocks

Vigneswari

Noor

Amelia

et al. 2021

Life

View full text Add to dashboard Cite

show abstract

“…For that reason, many residues from different processes have been studied as potential culture media components. Among those, dairy effluents, molasses, paper mill effluents, winery wastewaters, food processing wastes, whey thin stillage, crude glycerol, and many others have been investigated (RATHIKA et al, 2018;KADIER et al, 2014;REVIN et al, 2018;SANTOS et al, 2016).…”

Section: Vinasse Management Challenges: Advantages Disadvantages Of Fertirrigation and Other Technological Opportunitiesmentioning

confidence: 99%

“…and Bacillus spp., for biosurfactant production (NASPOLINI et al, 2017;MD, 2012), Xanthomonas campestris for xanthan gum production (non-food applications) (BECKER et al, 1998), Bacillus spp. for bioplastic production (RATHIKA et al, 2018;DESOUKY et al, 2017), Acetobacter spp. and Gluconacetobacter spp.…”

Section: Vinasse Management Challenges: Advantages Disadvantages Of Fertirrigation and Other Technological Opportunitiesmentioning

confidence: 99%

“…56 BIOENG, v. 15, n. 1, p. 42-68, 2021. DOI: http://dx.doi.org/10.18011/bioeng2021v15n1p42-68 BARROS et al, 2017;LÓPEZ-LÓPEZ et al, 2015 Biosurfactant production Glycerol (30 g L -1 ); Sodium nitrate (1.2 -4.0 g L -1 ); phosphates (0.5 -10 g L -1 ); Magnesium sulfate (0.2 -0.5 g L -1 ); Potassium chloride (0.1 g L -1 ); ferrous sulphate II (0.01 g L -1 ); Calcium chloride (0.01 g L -1 ); yeast extract (0.01 g L -1 ) SANTOS et al, 2016;BECKER et al, 1998;BRANDÃO et al, 2013;RONCEVIC et al, 2014 Bioplastic production Glucose, sucrose or glycerol (10 -20 g L -1 ); ammonium (0.6 -1.5 g L -1 ); phosphates (7 g L -1 ); sulphates (0.72 g L -1 ); Calcium (0.084 g L -1 ) RATHIKA et al, 2018;DESOUKY et al, 2017;KHIYAMI et al, 2011 Bacterial cellulose Glycerol (2.39 -7,87 g L -1 ); lactic acid (5.07 -7.41 g L -1 ); acetic acid (0.56 -2.72 g L -1 ); succinic BECKER et al, 2011;YING et al, 2014;LIU et al, 2016 Although many factors contribute to the exact determination of culture medium composition for a specific bioprocess, such as the microorganism strain, bioproduct characteristics, biosynthesis conditions, downstream operations, and others, some general information about the main microbial nutrient requirements are presented (Table 2).…”

Section: Vinasse Management Challenges: Advantages Disadvantages Of Fertirrigation and Other Technological Opportunitiesmentioning

confidence: 99%

See 1 more Smart Citation

Vinasse From the Brazilian Lignocellulosic Ethanol Process: Chemical Composition and Potential for Bioprocesses

Silverio

Calegari

Leite

et al. 2021

Revista Brasileira De Engenharia De Biossistemas

View full text Add to dashboard Cite

Brazil is the second-largest producer of ethanol and the alcoholic fermentation wastes have become a concern for both environmental and economic reasons. Recently, the Brazilian industry has implemented the second generation (2G) process to attend the growing for biofuel. In this study, we aimed to investigate whether the 2G vinasse faces the same environmental challenges that first generation (1G) vinasses do, meaning vinasses from ethanol processes using sugarcane juice and/or molasses. Thus, vinasse was obtained from one of the recently-started 2G ethanol facilities in São Paulo State and then chemically characterized. Considering glycerol, mannitol, residual sugars, and organic acids concentrations altogether, it was determined that 2G vinasse had a total carbon source of 23,050 mg L-1 (compared to 4,800 mg L-1 in 1G vinasse). Magnesium, calcium, potassium, and others salts were determined as well. Based on its chemical composition, vinasses could be considered as nutrient sources for other bioprocesses. Finally, we brought some perspectives into bioprocesses with nutritional requirements that might be fully or partially provided by vinasses, leading to the production of bioenergy or bioproducts.

show abstract

“…At the same time, agro-industrial wastewater and sludge have also attracted great interest. A plethora of agro-industrial effluents have been tested as substrate for PHAs production: Sugarcane molasses, paper mill effluent, dairy effluent [20], distillery effluents [21], rice winery wastewater [22], and yeast industry wastewater [23]. Authors often agree in concluding that the reutilization of wastewater and sludge as a carbon substrate not only abates the cost of PHAs production [20,21] but also provides for a significant reduction of the sludge disposal cost [19], constituting a sustainable waste management [15,18] and significantly decreasing the environmental impact of PHAs [17].…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment and Energy Balance of a Novel Polyhydroxyalkanoates Production Process with Mixed Microbial Cultures Fed on Pyrolytic Products of Wastewater Treatment Sludge

et al. 2020

View full text Add to dashboard Cite

A “cradle-to-grave” life cycle assessment is performed to identify the environmental issues of polyhydroxyalkanoates (PHAs) produced through a hybrid thermochemical-biological process using anaerobically digested sewage sludge (ADSS) as feedstock. The assessment includes a measure of the energy performance of the process. The system boundary includes: (i) Sludge pyrolysis followed by volatile fatty acids (VFAs) production; (ii) PHAs-enriched biomass production using a mixed microbial culture (MMC); (iii) PHAs extraction with dimethyl carbonate; and iv) PHAs end-of-life. Three scenarios differing in the use of the syngas produced by both pyrolysis and biochar gasification, and two more scenarios differing only in the external energy sources were evaluated. Results show a trade-off between environmental impacts at global scale, such as climate change and resources depletion, and those having an effect at the local/regional scale, such as acidification, eutrophication, and toxicity. Process configurations based only on the sludge-to-PHAs route require an external energy supply, which determines the highest impacts with respect to climate change, resources depletion, and water depletion. On the contrary, process configurations also integrating the sludge-to-energy route for self-sustainment imply more onsite sludge processing and combustion; this results in the highest values of eutrophication, ecotoxicity, and human toxicity. There is not a categorical winner among the investigated configurations; however, the use of a selected mix of external renewable sources while using sludge to produce PHAs only seems the best compromise. The results are comparable to those of both other PHAs production processes found in the literature and various fossil-based and bio-based polymers, in terms of both non-biogenic GHG emissions and energy demand. Further process advancements and technology improvement in high impact stages are required to make this PHAs production process a competitive candidate for the production of biopolymers on a wide scale.

show abstract

Bioconversion of agro-industrial effluents for polyhydroxyalkanoates production using Bacillus subtilis RS1

Cited by 34 publications

References 22 publications

Recent Advances in the Biosynthesis of Polyhydroxyalkanoates from Lignocellulosic Feedstocks

Recent Advances in the Biosynthesis of Polyhydroxyalkanoates from Lignocellulosic Feedstocks

Vinasse From the Brazilian Lignocellulosic Ethanol Process: Chemical Composition and Potential for Bioprocesses

Life Cycle Assessment and Energy Balance of a Novel Polyhydroxyalkanoates Production Process with Mixed Microbial Cultures Fed on Pyrolytic Products of Wastewater Treatment Sludge

Contact Info

Product

Resources

About