Adaptation responses of microalgal-bacterial granular sludge to polystyrene microplastic particles in municipal wastewater

Hou, Huan; Wang, Shulian; Ji, Bin; Zhang, Yu; Pi, Kewu; Shi, Yafei

doi:10.1007/s11356-022-20107-2

Cited by 13 publications

(4 citation statements)

References 50 publications

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“…The synthetic wastewater used in this study was mainly composed of 472 mg/L of glucose, 115 mg/L of NH 4 Cl, 22 mg/L of KH 2 PO 4 , 10 mg/L of CaCl 2 , 10 mg/L of MgSO 4 Á7H 2 O, 10 mg/L of FeSO 4 Á7H 2 O, 400 mg/L of NaHCO 3 , and 1 mL/L of trace element solution. Trace element composition was shown in previous study (Hou et al, 2022;Wang et al, 2020).…”

Section: Culture Of Algal-bacterial Granular Sludgementioning

confidence: 56%

Cultivation of algal‐bacterial granular sludge and degradation characteristics of tetracycline

Wang

Zhang

et al. 2023

Water Environment Research

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Due to the increasing use of antibiotics, tetracycline was frequently detected in wastewater. As a novel technology, algal‐bacterial granular sludge process is expected to be widely used in wastewater treatment. However, the degradation effect of tetracycline by algal‐bacterial granular sludge process and its degradation path is still unknown. In this study, mature and stable algal‐bacterial granular sludge was cultured and the degradation of tetracycline by it was investigated. The results showed that the removal amount of 1–25 mg/L tetracycline by algal‐bacterial granular sludge was 0.09–1.45 mg/g volatile suspended solids (VSS), in which the adsorption amount was 0.06–0.17 mg/g VSS and the degradation amount was 0.03–1.27 mg/g VSS. Tetracycline biosorption was dominant at its concentration of 1–3 mg/L, while biodegradation was predominant at 5–25 mg/L of tetracycline. At tetracycline concentration of 3–5 mg/L, the contribution of biosorption and biodegradation to tetracycline removal by algal‐bacterial granular sludge process was almost equal. Algal‐bacterial granular sludge could effectively degrade tetracycline through demethylation, dehydrogenation, deacylation, and deamination or their combination. In addition, the degradation products were nontoxic and hardly pose a threat to environmental health. The research results of this paper provide a solid theoretical basis for tetracycline removal by algal‐bacterial granular sludge and a reference for the development of algal‐bacterial granular sludge process for wastewater treatment in the presence of tetracycline. Practitioner points Mature and stable algal‐bacterial granular sludge was cultured. Tetracycline was removed by algal‐bacterial granular sludge through biosorption and biodegradation. Algal‐bacterial granular sludge could degrade tetracycline through demethylation, dehydrogenation, deacylation, and deamination or their combination. The degradation products were nontoxic.

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Section: Culture Of Algal-bacterial Granular Sludgementioning

confidence: 56%

Cultivation of algal‐bacterial granular sludge and degradation characteristics of tetracycline

Wang

Zhang

et al. 2023

Water Environment Research

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“…A previous study also proved that a reduction in PS would reduce sludge bulking, and the decline in settleability and the entanglement of filamentous bacteria around the surfaces of the particles may be related to the large amount of PS secreted by algal-bacterial AGS [35]. In addition, algal EPS acts as a nutrient to promote bacterial growth, while bacterial EPS can reduce adverse effects [36]. These points may be the key reason why algal-bacterial AGS has high resilience when facing high-concentration surfactants and maintains stable removal efficiency.…”

Section: Analysis Of Extracellular Polymeric Substancesmentioning

confidence: 91%

Performance of Treating Surfactant-Containing Wastewater by Using Algal–Bacterial Granular Sludge

Wang,

Liu,

Hang

2024

Water

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Surfactants have been widely used in various fields in recent years, but subsequent treatment of their wastewater has always been a problem that needs to be solved. As a new sewage treatment method, algal–bacterial aerobic granule sludge (algal–bacterial AGS) is considered to be one of the potential methods for treating this kind of wastewater. This study investigated the efficiency of using algal–bacterial AGS to treat wastewater containing surfactants and compared it with bacterial AGS. The results indicated that when confronting a high-concentration surfactant, algal–bacterial AGS could keep a relatively high nutrient removal capacity (about 90% dissolved organic carbon, 99% ammonia nitrogen, 52% total phosphorus) and improved the adaptability to sudden changes in high-concentration surfactant environments compared with bacterial AGS. These results illustrated that algal–bacterial AGS is a potential method to process wastewater containing surfactants with superior treatment efficiency and adaption response.

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“…Furthermore, it is imperative to delve into comprehensive research on the intricate interface interactions between the released plastic particles (from PPE) and pollutants. This investigation should encompass various perspectives, including biological [ 48 , 49 , 50 ], physicochemical [ 14 , 15 ], and other relevant angles [ 51 ]. Such a multifaceted approach is essential for unraveling the complex network of ecological and toxicological impacts that are intricately linked with microplastic particle pollution.…”

Section: Challenges For Control Of Microplastic Release From Personal...mentioning

confidence: 99%

The Fate of Microplastics, Derived from Disposable Masks, in Natural Aquatic Environments

Zhang,

Chai,

Duan

et al. 2024

Toxics

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This paper mainly reviews the fate of microplastics, released from used face masks, in the water environment. Through previous experiments, the amount of fiber microplastics released from used face masks into aqueous environments was not negligible, with the maximum microplastics releasing amount reaching 10,000 piece·day−1 for each mask. Microplastic derived from these masks often occurred in the shape of polymeric fibers that resulted from the breakage of the chemical bonds in the plastic fibers by the force of water flow. The potential contact forces between microplastics (originating from face masks) with other pollutants, primarily encompass hydrophobic and electrostatic interactions. This critical review paper briefly illustrates the fate of microplastics derived from disposable face masks, further devising effective strategies to mitigate the environmental impact of plastic particle release from the used personal protective equipment.

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Adaptation responses of microalgal-bacterial granular sludge to polystyrene microplastic particles in municipal wastewater

Cited by 13 publications

References 50 publications

Cultivation of algal‐bacterial granular sludge and degradation characteristics of tetracycline

Cultivation of algal‐bacterial granular sludge and degradation characteristics of tetracycline

Performance of Treating Surfactant-Containing Wastewater by Using Algal–Bacterial Granular Sludge

The Fate of Microplastics, Derived from Disposable Masks, in Natural Aquatic Environments

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