Denitrification performance and microbial communities of solid-phase denitrifying reactors using poly (butylene succinate)/bamboo powder composite

Qi, Wanhe; Taherzadeh, Mohammad J.; Ruan, Yunjie; Deng, Yale; Chen, Ji Shuang; Lu, Hui Feng; Xu, Xiang Yang

doi:10.1016/j.biortech.2020.123033

Cited by 56 publications

(8 citation statements)

References 46 publications

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“…Furthermore, the thermal and mechanical properties were strengthened when the filler loading was increased by up to 35%. Qi et al [ 23 ] investigated a bamboo powder (BP)-reinforced PBS composite as a biofilm carrier for denitrification. The results indicated that the incorporation of BP in a PBS matrix achieved the acceptable removal of nitrates.…”

Section: Introductionmentioning

confidence: 99%

Development of Biodegradable Composites Using Polycaprolactone and Bamboo Powder

et al. 2022

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The use of biodegradable polymers in daily life is increasing to reduce environmental hazards. In line with this, the present study aimed to develop a fully biodegradable polymer composite that was environmentally friendly and exhibited promising mechanical and thermal properties. Bamboo powder (BP)-reinforced polycaprolactone (PCL) composites were prepared using the solvent casting method. The influence of BP content on the morphology, wettability, and mechanical and thermal properties of the neat matrix was evaluated. In addition, the degradation properties of the composites were analysed through soil burial and acidic degradation tests. It was revealed that BP contents had an evident influence on the properties of the composites. The increase in the BP content has significantly improved the tensile strength of the PCL matrix. A similar trend is observed for thermal stability. Scanning electron micrographs demonstrated uniform dispersion of the BP in the PCL matrix. The degradation tests revealed that the biocomposites with 40 wt·% of BP degraded by more than 20% within 4 weeks in the acidic degradation test and more than 5% in the soil burial degradation test. It was noticed that there was a considerable difference in the degradation between the PCL matrix and the biocomposites of PCL and BP. These results suggest that biodegradable composites could be a promising alternative material to the existing synthetic polymer composites.

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Section: Introductionmentioning

confidence: 99%

Development of Biodegradable Composites Using Polycaprolactone and Bamboo Powder

et al. 2022

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“…Acidovorax [62] Arenimonas [63] Chromobacterium [64] CL500-29 marine group [65] Comamonas [66] Devosia [67] Hyphomicrobium [68] Leptothrix [63] Methylotenera [69] OLB13 [70] Opitutus [67] Paracoccus [63] Pseudomonas [67] Rhodobacter [67] SM1A02 [71] Thauera [72] Denitrifying phosphorus-accumulation Candidatus Accumulibacter [73] Dechloromonas [73] Dissimilatory reduction of nitrate to ammonium…”

Section: Denitrificationmentioning

confidence: 99%

Spatial Variation of Cladophora Epiphytes in the Nan River, Thailand

Ruen-Pham

Graham

Satjarak

2021

Plants

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Cladophora is an algal genus known to be ecologically important. It provides habitats for microorganisms known to provide ecological services such as biosynthesis of cobalamin (vitamin B12) and nutrient cycling. Most knowledge of microbiomes was obtained from studies of lacustrine Cladophora species. However, whether lotic freshwater Cladophora microbiomes are as complex as the lentic ones or provide similar ecological services is not known. To illuminate these issues, we used amplicons of 16S rDNA, 18S rDNA, and ITS to investigate the taxonomy and diversity of the microorganisms associated with replicate Cladophora samples from three sites along the Nan River, Thailand. Results showed that the diversity of prokaryotic and eukaryotic members of Cladophora microbiomes collected from different sampling sites was statistically different. Fifty percent of the identifiable taxa were shared across sampling sites: these included organisms belonging to different trophic levels, decomposers, and heterotrophic bacteria. These heterogeneous assemblages of bacteria, by functional inference, have the potential to perform various ecological functions, i.e., cellulose degradation, cobalamin biosynthesis, fermentative hydrogen production, ammonium oxidation, amino acid fermentation, dissimilatory reduction of nitrate to ammonium, nitrite reduction, nitrate reduction, sulfur reduction, polyphosphate accumulation, denitrifying phosphorus-accumulation, and degradation of aromatic compounds. Results suggested that river populations of Cladophora provide ecologically important habitat for microorganisms that are key to nutrient cycling in lotic ecosystems.

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“…Among the types of plastics previously mentioned, PBS has been reported as one of the most useful bio-based polyesters that its demand has kept rising over the years due to its excellent properties and promising sustainability (Rafiqah et al, 2021). As reported in previous literature, PBS has been applied in many areas for different purposes such as a source of carbon for denitrification (Liu et al, 2018;Qi et al, 2020), plastic bags (Xie et al, 2014), crops mulch cover (Su et al, 2019;Quattrosoldi et al, 2020); fishery materials, biomedical tools, tableware, etc. (Gigli et al, 2016;Rafiqah et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…−1 could attributes to the elongation vibration of the O−H and asymmetric stretching vibration of −CH 2 − groups, respectively(Zhu et al, 2015;Li et al, 2019).Moreover, the absorption peaks at 1,722, 1,471, 1,392, 1,160, 1,046, and 748 cm −1 were ascribed to the double bond of carbonyl (C O), methyl of lignin's asymmetric bending (−CH 3 ), C−H deformation in cellulose and hemicellulose, stretching bond of ester (−C−O−C−), primary alcohol C−O bond, and aromatic rings of lignin, respectively(MonikaPal et al, 2018;Qi et al, 2020). Other important peaks obtained are 917 and 805 cm −1 attributed to C−OH bending in the carboxylic group and the cross-linking of the C−C bond, which affects the strength of ester linkages, as reported byMonikaPal et al, 2018. From these results, it was clear that the addition of BP had only slightly modified the pure PBS's composition while allowing its original functional chemical structure intact.…”

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confidence: 99%

Impacts of Baobab (Adansonia digitata) Powder on the Poly(Butylene Succinate) Polymer Degradability to Form an Eco-Friendly Filler-Based Composite

et al. 2021

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Poly (butylene succinate) (PBS) is one of the most common biodegradable plastic polymers that has recently been used in the green environmental field. Enhancement of physicochemical characteristics of these polymers by using plant-based materials like Baobab (Adansonia digitata) will improve its industrial application. This study evaluated Baobab (Adansonia digitata) powder (BP) and PBS composites under various ratios (PBS/BP: 90/10, 80/20, 70/30, 60/40, and 50/50 wt%) for their thermo-mechanical and other physicochemical properties for the industrial application. The nanoscale morphological and elemental characterization were also measured by scanning electron microscope-dispersive X-ray spectroscopy (SEM-EDS). The results revealed that PBS/BP blends of 90/10 and 50/50 showed a significantly reduced melting temperature (Tm) up to 94°C (p < 0.05) compared to PBS (114°C). Also, the dynamic viscosity, storage modulus, and loss modulus showed a significant decrease with increasing the ratio of BP in PBS/BP composite, which confirmed faster degradation than the pure PBS. In conclusion, the novel PBS/BP biomaterial is recommended for use as a carbon source for denitrification processes, as an eco-friendly faster degradable natural filler-based polymer. Besides, they could be use in food packaging and biomedical industries.

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Denitrification performance and microbial communities of solid-phase denitrifying reactors using poly (butylene succinate)/bamboo powder composite

Cited by 56 publications

References 46 publications

Development of Biodegradable Composites Using Polycaprolactone and Bamboo Powder

Development of Biodegradable Composites Using Polycaprolactone and Bamboo Powder

Spatial Variation of Cladophora Epiphytes in the Nan River, Thailand

Impacts of Baobab (Adansonia digitata) Powder on the Poly(Butylene Succinate) Polymer Degradability to Form an Eco-Friendly Filler-Based Composite

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