Effects of loading rates and N/S ratios in the sulfide-dependent autotrophic denitrification (SDAD) and Anammox coupling system

Wu, Changyong; Qin, Yuyue; Liu, Yang; Zhi-ju, Liu; Chen, Buqing; Chen, Linyi

doi:10.1016/j.biortech.2020.123969

Cited by 51 publications

(4 citation statements)

References 45 publications

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“…According to the published literature, microbial species with the function of autotrophic denitrification and anammox (anaerobic ammonium oxidation) share a similar niche, and many studies have verified the feasibility of coupling the simultaneous sulfide and nitrate removal process with anammox in a single reactor. 17 It may be speculated that there might be a simultaneous anammox process occurring in the reactors.…”

Section: Resultsmentioning

confidence: 99%

Exploration and verification of the effect of S/N ratios on elemental sulfur generation in a simultaneous sulfide and nitrate removal process

Sun

Mahmood

Chen

et al. 2022

Environ. Sci.: Water Res. Technol.

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Section: Resultsmentioning

confidence: 99%

Exploration and verification of the effect of S/N ratios on elemental sulfur generation in a simultaneous sulfide and nitrate removal process

Sun

Mahmood

Chen

et al. 2022

Environ. Sci.: Water Res. Technol.

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“…The last of the processes occurring during anaerobic wastewater treatment was denitrification, which consists in the decomposition of aerobic nitrogen forms into gaseous nitrogen [ 58 , 59 ]. Statistically significant differences in N-NO 3 − concentrations were observed between the reactor with the addition of CA.…”

Section: Resultsmentioning

confidence: 99%

Natural Cinnamic Acid Derivatives: A Comprehensive Study on Structural, Anti/Pro-Oxidant, and Environmental Impacts

et al. 2021

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Cinnamic acid (CA), p-coumaric acid (4-hydroxycinnamic acid, 4-HCA), caffeic acid (3,4vdihydroxycinnamic acid, 3,4-dHCA), and 3,4,5-trihydroxycinnamic acid (3,4,5-tHCA) were studied for their structural, anti-/pro-oxidant properties and biodegradability. The FT-IR, FT-Raman, UV/Vis, 1H and 13C NMR, and quantum chemical calculations in B3LYP/6-311++G** were performed to study the effect on number and position of hydroxyl group in the ring on the molecular structure of molecules. The antioxidant properties of the derivatives were examined using DPPH● and HO● radicals scavenging assays, ferric ion reducing antioxidant power (FRAP), cupric reducing antioxidant capacity (CUPRAC), inhibition of linoleic acid oxidation, as well as the biological antioxidant assay with Saccharomyces cerevisiae. Moreover, the pro-oxidant activity of compounds in Trolox oxidation assay was estimated. The effect of the derivatives on environment on the basis of increasing the carbon and nitrogen compounds transformation processes occurring in biological wastewater treatment was studied.

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“…During the process of denitrification, sulfur compounds (S 0 , S 2− , SO 3 2− , S 2 O 3 2− ) provide electrons through the electron transfer chain to reduce nitrogen oxides (Deng et al, 2019;Ma et al, 2020;Grubba et al, 2022). These compounds then participate in more complex reactions which ultimately convert into SO 4 2− (Wu et al, 2020;Zhang et al, 2022a). Compared to HD processes, the SAD process significantly reduces direct carbon emissions from wastewater treatment plants since CO 2 is not produced as a result of SAD (Wang et al, 2023a).…”

Section: Sulfur Autotrophic Denitrificationmentioning

confidence: 99%

“…It is important to note that there is a potential risk of using H 2 as an electron donor in wastewater treatment plants, as it can form flammable and explosive mixtures with air (Wu et al, 2018;Wu et al, 2020). H 2 is one of the most expensive electron donors used in the autotrophic denitrification process.…”

Section: Challengesmentioning

confidence: 99%

Research progress and prospect of low-carbon biological technology for nitrate removal in wastewater treatment

Zheng,

Zhang,

Kong

et al. 2024

Front. Environ. Sci. Eng.

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Wastewater treatment plants are the major energy consumers and significant sources of greenhouse gas emissions, among which biological nitrogen removal of wastewater is an important contributor to carbon emissions. However, traditional heterotrophic denitrification still has the problems of excessive residual sludge and the requirement of external carbon sources. Consequently, the development of innovative low-carbon nitrate removal technologies is necessary. This review outlines the key roles of sulfur autotrophic denitrification and hydrogen autotrophic denitrification in low-carbon wastewater treatment. The discovered nitrate/nitrite dependent anaerobic methane oxidation enables sustainable methane emission reduction and nitrogen removal by utilizing available methane in situ. Photosynthetic microorganisms exhibited a promising potential to achieve carbon-negative nitrate removal. Specifically, the algal-bacterial symbiosis system and photogranules offer effective and prospective low-carbon options for nitrogen removal. Then, the emerging nitrate removal technology of photoelectrotrophic denitrification and the underlying photoelectron transfer mechanisms are discussed. Finally, we summarize and prospect these technologies, highlighting that solar-driven biological nitrogen removal technology is a promising area for future sustainable wastewater treatment. This review has important guiding significance for the design of low-carbon wastewater treatment systems.

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Effects of loading rates and N/S ratios in the sulfide-dependent autotrophic denitrification (SDAD) and Anammox coupling system

Cited by 51 publications

References 45 publications

Exploration and verification of the effect of S/N ratios on elemental sulfur generation in a simultaneous sulfide and nitrate removal process

Exploration and verification of the effect of S/N ratios on elemental sulfur generation in a simultaneous sulfide and nitrate removal process

Natural Cinnamic Acid Derivatives: A Comprehensive Study on Structural, Anti/Pro-Oxidant, and Environmental Impacts

Research progress and prospect of low-carbon biological technology for nitrate removal in wastewater treatment

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