Effects of short-term exposure to linear anionic surfactants (SDBS, SLS and SDS) on anammox biomass activity

Qiao, Sen; Zheng, Nan; Tian, Tian; Yu, Cong

doi:10.1039/c6ra06238e

Cited by 18 publications

(5 citation statements)

References 43 publications

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“…Acute exposure of TiO2 NPs on nitrogen removal performance of anammox process SDBS, which is known as an anionic surfactant, was used as a dispersing agent in order to enhance the NPs stability and prevent their aggregation in the stock NPs solution. Previously published studies revealed no negative impacts of SDBS at low concentrations on biological processes including anaerobic treatment and anammox systems (Mu & Chen, 2011;Mu et al, 2012;Qiao et al, 2016;Zhang et al, 2017). In the current study, it was observed that, 0.1 mM SDBS has no statistically significant inhibitory impact on nitrogen removal efficiency of Anammox process (α=0.05, P = 0.25 > 0.05 for μ1=μ2) (Figure 2).…”

Section: Resultssupporting

confidence: 58%

Short-term inhibitory effects of TiO2 NPs on Anammox process

Sari¹,

Bektas²,

Akgül³

2020

biost

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Anammox process has brought about cost-effective, eco-friendly, and innovative technologies to wastewater treatment by reducing the operational cost of treatment plants and decreasing greenhouse gas emissions. Titanium dioxide (TiO2), as one of the most prevalent nanoparticles (NPs) in the world, is being used in various consumer products and applications. In recent years, studies have focused on potential toxicological impacts of NPs on biological processes due to their endless production and consumption. In this context, the first time in the literature, 24 h acute TiO2 NPs exposure on Anammox process was investigated. Deterioration on anammox activity gradually increased with increasing applied TiO2 NPs concentration. At 300 mg/L exposure dose, nitrogen removal rate dramatically decreased to 37.09 ± 0.24 mgN/ gVSS.d and a severe inhibition (80.57% ± 1.17%) was observed. Among the several curve fit models, non-linear second order polynomial (quadratic) model was the best fit one with IC50 of 154 mg/L. Scanning electron microscope (SEM) images demonstrated the tendency of TiO2 NPs to aggregate and attach to the surface of the bacteria. Extracellular polymeric substance (EPS) response of anammox bacteria was also investigated and it was found that, the total EPS content gradually decreased by increasing TiO2 NPs concentration.

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Section: Resultssupporting

confidence: 58%

Short-term inhibitory effects of TiO2 NPs on Anammox process

Sari¹,

Bektas²,

Akgül³

2020

biost

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“…On the contrary, the relative activity of NiR was affected in the SDS‐200. Previous studies indicated that the addition of SDBS and SDS might combine with the key catalytic residues of NiR and NR through electrostatic or hydrophobic interaction, resulting in decreased enzyme activity (Li, Zhai, Du, Li, & Feng, 2013; Qiao et al., 2016; Ruso, Deo, & Somasundaran, 2004). Besides, the chemical structure of SDBS had one more special benzene ring than SDS, which might cause its SDBS to be more toxic and inhibit the enzyme activity seriously.…”

Section: Resultsmentioning

confidence: 99%

“…For example, 0.02 to 1.0 mg/L of linear alkylbenzene sulfonate in water could damage fish gills and high concentration of linear alkylbenzene sulfonate (20 mg/L) inhibited the growth of Microcystis aeruginosa (Moreno-Garrido, Hampel, Lubián, & Blasco, 2001;Wang et al, 2015). Previous researches showed that the anionic surfactants had serious effects on the bioactivity of methanogens, autotrophic ammonia-oxidizing bacteria, and anammox (Brandt, Pedersen, & Sørensen, 2002;Gavala & Ahring, 2002;Qiao, Zheng, Tian, Yu, & Zhou, 2016). Moreover, anionic surfactants had different negative effects on microorganisms which were closely depended on the variety of microbial community and anionic surfactant type, concentration, and exposure time (Robert-Peillard et al, 2015;Sun, Zhang, Pan, & Zhu, 2019;Wang et al, 2017;Ying, 2006).…”

Section: Research Articlementioning

confidence: 99%

Effects of exposure to anionic surfactants (SDBS and SDS) on nitrogen removal of aerobic denitrifier

Yin

Zhang

et al. 2020

Water Environment Research

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In order to explain the effect of anionic surfactants on aerobic denitrification in the urban river, sodium dodecyl benzene sulfonate (SDBS) and sodium dodecyl sulfonate (SDS) were added in aerobic denitrifier and the efficiency of nitrogen removal, microbial mechanisms, and enzyme activity was investigated in this study. The results showed that the total nitrogen (TN) and the nitrate nitrogen (NO − 3 − N) removal efficiency decreased as an increase of SDBS concentration. In contrast, 59.70% of the TN and 75.12% of NO − 3 − N were removed as the SDBS was 0 mg/L (Control). When SDBS was 200 mg/L (SDBS-200), the removal efficiency of TN and NO − 3 − N was reduced to 4.92% and 4.00%, respectively. However, the denitrification efficiency was significantly accelerated when the concentration of SDS increased, except for 200 mg/L treatment (SDS-200). As the SDS increased from 0 to 100 mg/L (SDS-100), the removal efficiency of TN and NO − 3 − N raised from 59.70% to 70.8% and from 75.12% to 85.08%, respectively. The community structure of aerobic denitrifiers was significantly affected in the SDBS and SDS. While the Cupriavidus and Achromobacter were dominant genera in the group of Control (39.59%, and 42.45%) and SDS-100 (44.40% and 34.86%), the relative abundance of Cupriavidus increased to 84.06% and 59.45% in the group of SDBS-200 and SDS-200, respectively. Enzyme activity assays proved that the nitrite reductase (NiR) relative activity of aerobic denitrification was suppressed by both SDBS and SDS. The increase in the SDS concentrations (from 0 to 50 mg/L) resulted in sharp growth of the nitrate reductase (NR) relative activities (from 100% to 146.86%). These findings demonstrated that SDBS and SDS affected aerobic denitrification efficiency of the aerobic denitrifiers by changing its microbial community structure and enzyme activity. © 2020 Water Environment Federation • Practitioner points • SDS strengthened aerobic denitrification at low concentration, but the aerobic denitrifiers were inhibited in SDBS. • The variation of community structure played a vital role in the aerobic denitrification system. • The enzyme activity was seriously affected by SDBS and SDS. • Microorganisms and enzyme activity were synergistically involved in the aerobic denitrification.

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“…They can easily enter the environment through industrial wastewater and domestic sewage [21,22] and may contribute to occurrence and potential environmental risk [23]. SDS and SDBS have an inhibitory effect on the anaerobic ammonia oxidation of microorganisms [24]. It would be positive to indicate the main consequences of the effect of SDBS regarding the increased solubility of proteins and carbohydrates over the activated sludge reaction.…”

Section: Introductionmentioning

confidence: 99%

Performance and Biomass Characteristics of SBRs Treating High-Salinity Wastewater at Presence of Anionic Surfactants

Huiru

Yang

2020

IJERPH

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Sodium dodecylbenzene sulfonate (SDBS) and sodium dodecyl sulfate (SDS), as two anionic surfactants, have diffused into environments such as surface water and ground water due to extensive and improper use. The effects on the removal performance and microbial community of sequencing batch reactors (SBRs) need to be investigated in the treatment of saline wastewater containing 20 g/L NaCl. The presence of SDS and SDBS could decrease the removal efficiencies of ammonia nitrogen and total phosphorus, and the effect of SDS was more significant. The effect of surfactants on the removal mainly occurred during the aeration phase. Adding SDS and SDBS can reduce the content of extracellular polymeric substances (EPS). In addition, SDS and SDBS also can reduce the inhibition of high salinity on sludge activity. A total of 16 s of rRNA sequencing analysis showed that the addition of surfactants reduced the diversity of microbial communities; besides, the relative abundance value of the dominant population Proteobacteria increased from 91.66% to 97.12% and 93.48% when SDS and SDBS were added into the system, respectively.

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Effects of short-term exposure to linear anionic surfactants (SDBS, SLS and SDS) on anammox biomass activity

Abstract: This work demonstrates the feasibility of nitrogen removal from wastewater containing linear anionic surfactants, including sodium dodecyl benzene sulfonate, sodium lauryl sulfate and sodium dodecyl sulfonate, by using the anammox process.

Cited by 18 publications

References 43 publications

Short-term inhibitory effects of TiO2 NPs on Anammox process

Short-term inhibitory effects of TiO2 NPs on Anammox process

Effects of exposure to anionic surfactants (SDBS and SDS) on nitrogen removal of aerobic denitrifier

Performance and Biomass Characteristics of SBRs Treating High-Salinity Wastewater at Presence of Anionic Surfactants

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