Remedying acidification and deterioration of aerobic post-treatment of digested effluent by using zero-valent iron

Wang, Shen; Zheng, Dan; Wang, Shuang; Wang, Lan; Lei, Yunhui; Xu, Ze; Deng, Liangwei

doi:10.1016/j.biortech.2017.09.078

Cited by 22 publications

(2 citation statements)

References 43 publications

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“…The SBR is characterized by simplicity, low cost and flexibility of operation, which are good advantages for cultivating slowgrowing bacteria enriched in a reactor. In an SBR treating digested effluent, the addition of ZVI provided electrons for denitrification, and the produced Fe(II) was favorable for Anammox enrichment (Wang et al, 2018). A nZVI-supported denitrifying bacteria, Alcaligenes eutrophus, was cultivated in a cylindrical culture tank, and the results of this study demonstrated that ferrous iron [Fe(II)(ad)] adsorbed on ferric oxides is likely an effective electron donor for NO 3 − removal (Xu et al, 2018).…”

Section: Zvi/fe(ii)mentioning

confidence: 94%

Autotrophic Fe-Driven Biological Nitrogen Removal Technologies for Sustainable Wastewater Treatment

Pang

Luo

et al. 2022

Front. Microbiol.

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Fe-driven biological nitrogen removal (FeBNR) has become one of the main technologies in water pollution remediation due to its economy, safety and mild reaction conditions. This paper systematically summarizes abiotic and biotic reactions in the Fe and N cycles, including nitrate/nitrite-dependent anaerobic Fe(II) oxidation (NDAFO) and anaerobic ammonium oxidation coupled with Fe(III) reduction (Feammox). The biodiversity of iron-oxidizing microorganisms for nitrate/nitrite reduction and iron-reducing microorganisms for ammonium oxidation are reviewed. The effects of environmental factors, e.g., pH, redox potential, Fe species, extracellular electron shuttles and natural organic matter, on the FeBNR reaction rate are analyzed. Current application advances in natural and artificial wastewater treatment are introduced with some typical experimental and application cases. Autotrophic FeBNR can treat low-C/N wastewater and greatly benefit the sustainable development of environmentally friendly biotechnologies for advanced nitrogen control.

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Section: Zvi/fe(ii)mentioning

confidence: 94%

Autotrophic Fe-Driven Biological Nitrogen Removal Technologies for Sustainable Wastewater Treatment

Pang

Luo

et al. 2022

Front. Microbiol.

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“…The anaerobic digestate is massive and rich in nitrogen (N), phosphorus (P), and organic matter. Thus, the digestate requires additional treatment to remove N, P, and residual organic matter to meet the discharge standards [3][4][5][6]. Digested swine wastewater has high concentrations of nutrients (N and P) but lacks readily biodegradable COD (rb-COD).…”

Section: Introductionmentioning

confidence: 99%

Coupled In-Situ Fermentation for Enhanced Biological Phosphorus Removal from Digested Swine Wastewater

Liao,

Zhang,

et al. 2023

Water

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This study demonstrated the feasibility of enhanced biological phosphorus removal coupled with in-situ fermentation (EBPR-F) to improve phosphorus removal from real digested swine wastewater. We used fermentable substrates (casein hydrolysate and glucose) as the external carbon sources to promote in-situ fermentation and enhance biological phosphorus removal. Compared with conventional EBPR dominated by Candidatus Accumulibacter, EBPR-F had significantly better phosphorus removal with enriched polyphosphate-accumulating organisms (PAOs). Under supplementation with 100 mg/L glucose, total phosphorus (TP) removal was over 95% in EBPR-F, with an average TP concentration in the effluent below 1.0 mg/L, satisfying the discharge standard (8 mg P/L) in China. The PAO activity and relative abundance of Candidatus Accumulibacter (44.7% ± 3.1%) and Tetrasphaera (18.1% ± 6.6%) in EBPR-F were much higher than those in EBPR. The improvement in phosphorus removal of EBPR-F was due to the enrichment of Tetrasphaera through the enhanced in-situ fermentation, as Tetrasphaera can efficiently ferment complex organic matter and provide bioavailable organics for phosphorus removal.

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Sponge iron enriches autotrophic/aerobic denitrifying bacteria to enhance denitrification in sequencing batch reactor

Li,

Chen,

Yang

et al. 2024

Bioresource Technology

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Remedying acidification and deterioration of aerobic post-treatment of digested effluent by using zero-valent iron

Cited by 22 publications

References 43 publications

Autotrophic Fe-Driven Biological Nitrogen Removal Technologies for Sustainable Wastewater Treatment

Autotrophic Fe-Driven Biological Nitrogen Removal Technologies for Sustainable Wastewater Treatment

Coupled In-Situ Fermentation for Enhanced Biological Phosphorus Removal from Digested Swine Wastewater

Sponge iron enriches autotrophic/aerobic denitrifying bacteria to enhance denitrification in sequencing batch reactor

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