Poly(butylene succinate)/bamboo powder blends as solid-phase carbon source and biofilm carrier for denitrifying biofilters treating wastewater from recirculating aquaculture system

Liu, Dezhao; Li, Jiawei; Li, Changwei; Deng, Yale; Zhang, Zeqing; Ye, Zhangying; Zhu, Songming

doi:10.1038/s41598-018-21702-5

Cited by 37 publications

(11 citation statements)

References 41 publications

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“…A lot of effort [ 4 , 10 , 21 , 22 , 23 ] has been dedicated to the fabrication of PBS/natural fiber biocomposites. Various natural lignocellulosic fibers such as ramie [ 21 ], jute fiber [ 4 ], bamboo fiber [ 22 ], and sisal fiber [ 23 ], to mention a few, have been added into the PBS matrix in order to improve the properties of the resultant biocomposites. This review paper discusses the preparation, morphology, modification, and mechanical properties of PBS/natural fiber biocomposites.…”

Section: Introductionmentioning

confidence: 99%

A Review on Green Composites Based on Natural Fiber-Reinforced Polybutylene Succinate (PBS)

et al. 2021

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The need for utilization of environmentally friendly materials has emerged due to environmental pollution that is caused by non-biodegradable materials. The usage of non-biodegradable plastics has increased in the past decades in many industries, and, as a result, the generation of non-biodegradable plastic wastes has also increased. To solve the problem of non-biodegradable plastic wastes, there is need for fabrication of bio-based polymers to replace petroleum-based polymers and provide strategic plans to reduce the production cost of bioplastics. One of the emerging bioplastics in the market is poly (butylene succinate) (PBS) and it has been the biopolymer of choice due to its biodegradability and environmental friendliness. However, there are some disadvantages associated with PBS such as high cost, low gas barrier properties, and softness. To lower the cost of PBS and enhance its properties, natural lignocellulosic fibers are incorporated into the PBS matrix, to form environmentally friendly composites. Natural fiber-based biocomposites have emerged as materials of interest in important industries such as packaging, automobile, and construction. The bonding between the PBS and natural fibers is weak, which is a major problem for advanced applications of this system. As a result, this review paper discusses various methods that are employed for surface modification of the Fibers The paper provides an in-depth discussion on the preparation, modification, and morphology of the natural fiber-reinforced polybutylene succinate biocomposites. Furthermore, because the preparation as well as the modification of the fiber-reinforced biocomposites have an influence on the mechanical properties of the biocomposites, mechanical properties of the biocomposites are also discussed. The applications of the natural fiber/PBS biocomposites for different systems are also reported.

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Section: Introductionmentioning

confidence: 99%

A Review on Green Composites Based on Natural Fiber-Reinforced Polybutylene Succinate (PBS)

et al. 2021

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“…It is interesting to note that the COD Cr concentration in the effluent of Reactor 2 was kept at a low level during the whole process, while the COD Cr concentration in the effluent of Reactor 1 had a negative relationship with the influent nitrate concentration (Figure 8d). Previous studies showed that the biological degradation of solid carbon source and denitrification are two independent processes [41]. Therefore, the high/low COD Cr concentration at low/high influent nitrate (16.1 and 30.8 mg/L) could possibly be explained by the continuous degradation without/with full utilization of denitrifying bacteria.…”

Section: Resultsmentioning

confidence: 99%

Comparison of Clay Ceramsite and Biodegradable Polymers as Carriers in Pack-bed Biofilm Reactor for Nitrate Removal

Zhang

Xue

et al. 2019

IJERPH

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In recent years, there is a trend of low C/N ratio in municipal domestic wastewater, which results in serious problems for nitrogen removal from wastewater. The addition of an external soluble carbon source has been the usual procedure to achieve denitrification. However, the disadvantage of this treatment process is the need of a closed, rather sophisticated and costly process control as well as the risk of overdosing. Solid-phase denitrification using biodegradable polymers as biofilm carrier and carbon source was considered as an attractive alternative for biological denitrification. The start-up time of the novel process using PCL (polycaprolactone) as biofilm carrier and carbon source was comparable with that of conventional process using ceramsite as biofilm carrier and acetate as carbon source. Further, the solid-phase denitrification process showed higher nitrogen removal efficiency under shorter hydraulic retention time (HRT) and low carbon to nitrogen (C/N) ratio since the biofilm was firmly attached to the clear pores on the surface of PCL carriers and in this process bacteria that could degrade PCL carriers to obtain electron donor for denitrification was found. In addition, solid-phase denitrification process had a stronger resistance of shock loading than that in conventional process. This study revealed, for the first time, that the physical properties of the biodegradable polymer played a vital role in denitrification, and the different microbial compositions of the two processes was the main reason for the different denitrification performances under low C/N ratio.

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“…Carbon source additions in BFT systems seem to greatly affect the concentration of this compound. For example, by increasing the C/N ratio in a BFT system to 20 using glucose as the extra carbon material, Liu et al (2018a) found that NO À 2 was almost always at very low concentrations (<0.2 mg L −1 ) and sometimes not even detected (0 mg L −1 ) in an O. niloticus-based culture. Additionally, using rice bran, glycerol and sucrose as extra carbon sources, Dauda et al (2017) observed that nitrite-N was significantly lower in all carbon-supplemented groups compared with that in the control group in which there was no carbon addition.…”

Section: Dissolved Inorganic Nitrogenmentioning

confidence: 99%

Supplemental carbon sources applied in biofloc technology aquaculture systems: types, effects and future research

Abakari

Luo

Kombat

et al. 2020

Reviews in Aquaculture

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Biofloc technology (BFT) systems have been driven towards increased sustainability in the last decade. BFT depends on maintenance of the optimal carbon-to-nitrogen (C/N) ratio through supplementation with organic carbon sources. The types of carbon sources and addition strategies are critical considerations in BFT systems. Thus for the purpose of this review, a thorough search of the literature was conducted to gather relevant information from reliable sources, ranging from reputable journals to books and useful reports in the field of BFT. Keywords used for the literature search include: 'biofloc technology systems', 'carbon sources', 'solid carbon sources', 'effects of carbons sources', 'carbon source addition strategies', 'nutritional quality of bioflocs', 'carbon sources and water quality', 'C/N ratio in BFT', and 'carbon sources and bacterial community'. Among the several peer-reviewed articles, books and technical reports consulted, 147 (dated from 1987 to 2020) were relevant for the preparation of this review. The current review thus examines the subject of supplemental carbon sources in BFT systems and discusses the various effects of their application with respect to the culture organism, microorganisms, water quality and the nutritional quality of flocs. The benefits and challenges associated with the types of carbon sources used in BFTs are also presented. Suggested organic carbon sources and their addition strategies are provided, and further research directions are proposed.

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Poly(butylene succinate)/bamboo powder blends as solid-phase carbon source and biofilm carrier for denitrifying biofilters treating wastewater from recirculating aquaculture system

Cited by 37 publications

References 41 publications

A Review on Green Composites Based on Natural Fiber-Reinforced Polybutylene Succinate (PBS)

A Review on Green Composites Based on Natural Fiber-Reinforced Polybutylene Succinate (PBS)

Comparison of Clay Ceramsite and Biodegradable Polymers as Carriers in Pack-bed Biofilm Reactor for Nitrate Removal

Supplemental carbon sources applied in biofloc technology aquaculture systems: types, effects and future research

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