Characterization of trace metal impact on organic acid metabolism and functional microbial community in treating dairy processing wastewater with thermophilic anaerobic membrane bioreactor

Ye, Min; Sun, Borchen; Zhu, Aijun; Song, Liuying; Ha, Juntong; Qin, Yu; Li, Yu-You

doi:10.1016/j.biortech.2022.127495

Cited by 10 publications

(4 citation statements)

References 23 publications

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“…pH, alkalinity, and volatile fatty acids (VFAs) were measured to determine the stability of the AnMBR operation . The sludge pH was maintained at 7.0–7.1 (Figure d), which favored methanogen survival . The buffer ability indicators were stable, with partial and total alkalinities of 710–853 and 1973–2190 mg CaCO 3 /L, respectively (Table S3), indicating the reactor’s resistance to perturbation or shock.…”

Section: Resultsmentioning

confidence: 99%

“…32 The sludge pH was maintained at 7.0−7.1 (Figure 3d), which favored methanogen survival. 33 The buffer ability indicators were stable, with partial and total alkalinities of 710−853 and 1973−2190 mg CaCO 3 /L, respectively (Table S3), indicating the reactor's resistance to perturbation or shock. Although fullscale sludge AD, using conventional CSTR, was reported to operate at a similar organic loading rate (OLR) to that in this study, its effluent typically contained 340 mg/L VFAs.…”

Section: Methanogenic Performance Of Long-term Anmbrmentioning

confidence: 99%

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Iron Recycle-Driven Organic Capture and Sidestream Anaerobic Membrane Bioreactor for Revolutionizing Bioenergy Generation in Municipal Wastewater Treatment

Ye,

Zhu,

Liu

et al. 2024

Environ. Sci. Technol.

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The practicality of intensifying organic matter capture for bioenergy recovery to achieve energy-neutral municipal wastewater treatment is hindered by the lack of sustainable methods. This study developed innovative processes integrating iron recycle-driven organic capture with a sidestream anaerobic membrane bioreactor (AnMBR). Iron-assisted chemically enhanced primary treatment achieved elemental redirection with 75.2% of chemical oxygen demand (COD), 20.2% of nitrogen, and 97.4% of phosphorus captured into the sidestream process as iron-enhanced primary sludge (Fe-PS). A stable and efficient biomethanation of Fe-PS was obtained in AnMBR with a high methane yield of 224 mL/g COD. Consequently, 64.1% of the COD in Fe-PS and 48.2% of the COD in municipal wastewater were converted into bioenergy. The acidification of anaerobically digested sludge at pH = 2 achieved a high iron release efficiency of 96.1% and a sludge reduction of 29.3% in total suspended solids. Ultimately, 87.4% of iron was recycled for coagulant reuse, resulting in a theoretical 70% reduction in chemical costs. The novel system evaluation exhibited a 75.2% improvement in bioenergy recovery and an 83.3% enhancement in net energy compared to the conventional system (primary sedimentation and anaerobic digestion). This self-reliant and novel process can be applied in municipal wastewater treatment to advance energy neutrality at a lower cost.

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Section: Resultsmentioning

confidence: 99%

Section: Methanogenic Performance Of Long-term Anmbrmentioning

confidence: 99%

Iron Recycle-Driven Organic Capture and Sidestream Anaerobic Membrane Bioreactor for Revolutionizing Bioenergy Generation in Municipal Wastewater Treatment

Ye,

Zhu,

Liu

et al. 2024

Environ. Sci. Technol.

Self Cite

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“…Note that, since the current research is based on a numerical analysis (and is not experimental in nature) and the evaluation is based on a simulation developed under a mathematical analysis, therefore, data reported in similar literature have been used to collect data. Indeed, the values presented in Table 1 are the average data of dairy wastewater characteristics reported in the literature 50,[52][53][54][55][56][57][58][59][60] . However, the developed simulation and analysis has been done in a way that can be easily generalized for other similar cases.…”

Section: System Descriptionmentioning

confidence: 99%

“…The characteristics of dairy effluent considered for the present research, the values are average data reported in the literature50,[52][53][54][55][56][57][58][59][60] .…”

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confidence: 99%

Technical and financial feasibility of a chemicals recovery and energy and water production from a dairy wastewater treatment plant

Basem,

Jasim,

Ghodratallah

et al. 2024

Sci Rep

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Due to the high volume of wastewater produced from dairy factories, it is necessary to integrate a water recovery process with the treatment plant. Today, bipolar membrane electrodialysis units (BMEUs) are increasingly developed for wastewater treatment and reutilizing. This article aims to develop and evaluate (technical and cost analyses) a combined BMEU/batch reverse osmosis unit (BROU) process for the recovery of chemicals and water from the dairy wastewater plant. The combined BROU/BMEU process is able to simultaneously produce water and strong base-acid, and reduce power consumption due to the injection of concentrated feed flow into the BMEU. A comprehensive comparative analysis on the performances of two combined and stand-alone BMEU configurations are developed. The proposed combined technology for dairy factory wastewater treatment is designed on a new structure and configuration that can address superior cost analysis compared to similar technologies. Further, the optimal values of permeate flux and current density as two vital and influencing parameters on the performance of the studied dairy wastewater treatment process were calculated and discussed. From the outcomes, the total cost of production in the combined configuration has been reduced by approximately 26% compared to the stand-alone configuration. Increasing the feed concentration rate using the batch reverse osmosis process for the dairy wastewater treatment process can be an ideal solution from an economic point of view. Moreover, point (current density, feed concentration rate, total unit cost) = $$\left(328.9, 7, 14.37\right)$$ 328.9 , 7 , 14.37 can be considered as an optimal point for the economic performance of the studied wastewater treatment process.

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The Role of Biomethane in Reaching Net Carbon Zero

Cansdale¹,

Forrester²,

Innard³

et al. 2023

A Sustainable Green Future

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Characterization of trace metal impact on organic acid metabolism and functional microbial community in treating dairy processing wastewater with thermophilic anaerobic membrane bioreactor

Cited by 10 publications

References 23 publications

Iron Recycle-Driven Organic Capture and Sidestream Anaerobic Membrane Bioreactor for Revolutionizing Bioenergy Generation in Municipal Wastewater Treatment

Iron Recycle-Driven Organic Capture and Sidestream Anaerobic Membrane Bioreactor for Revolutionizing Bioenergy Generation in Municipal Wastewater Treatment

Technical and financial feasibility of a chemicals recovery and energy and water production from a dairy wastewater treatment plant

The Role of Biomethane in Reaching Net Carbon Zero

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