Effects of carbon availability in a woody carbon source on its nitrate removal behavior in solid-phase denitrification

Hu, Rongting; Zheng, Xilai; Zheng, Tianyuan; Xin, Jia; Wang, Huan; Sun, Qiguo

doi:10.1016/j.jenvman.2019.06.057

Cited by 36 publications

(7 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The TN removal performance was dramatically affected by the pretreatment degree, temperature, and their interaction ( p < 0.01) ( Figure 2 b). The response of temperature to nitrogen removal performance was higher than that of the pretreatment degree, and the increase in temperature facilitated the improvement of the TN removal performance, which corresponds with the results of Shen et al [ 29 ] and Hu et al [ 30 ]. A total of 63 optimized TN removal efficiencies were obtained using RSM ( Supplementary Materials ); the highest predicted TN removal efficiency is 91.78% with the pretreatment degree of 0.53, the temperature of 25.00 °C, and the initial NO 3 − -N concentration of 15.00 mg L −1 .…”

Section: Resultssupporting

confidence: 88%

Improved Denitrification Performance of Polybutylene Succinate/Corncob Composite Carbon Source by Proper Pretreatment: Performance, Functional Genes and Microbial Community Structure

et al. 2023

View full text Add to dashboard Cite

Blending biodegradable polymers with plant materials is an effective method to improve the biodegradability of solid carbon sources and save denitrification costs, but the recalcitrant lignin in plant materials hinders the microbial decomposition of available carbon sources. In the present study, corncob pretreated by different methods was used to prepare polybutylene succinate/corncob (PBS/corncob) composites for biological denitrification. The PBS/corncob composite with alkaline pretreatment achieved the optimal NO3−-N removal rate (0.13 kg NO3−-N m−3 day−1) with less adverse effects. The pretreatment degree, temperature, and their interaction distinctly impacted the nitrogen removal performance and dissolved organic carbon (DOC) release, while the N2O emission was mainly affected by the temperature and the interaction of temperature and pretreatment degree. Microbial community analysis showed that the bacterial community was responsible for both denitrification and lignocellulose degradation, while the fungal community was primarily in charge of lignocellulose degradation. The outcomes of this study provide an effective strategy for improving the denitrification performance of composite carbon sources.

show abstract

Section: Resultssupporting

confidence: 88%

Improved Denitrification Performance of Polybutylene Succinate/Corncob Composite Carbon Source by Proper Pretreatment: Performance, Functional Genes and Microbial Community Structure

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Treatment 1 also showed a high standard deviation; however, all replicates had NO 2 -N concentrations higher than 3 mg L −1 . This suggests that in this treatment, the first step of the denitrification took place—nitrates were reduced to nitrites—but the reduction to N 2 O did not continue, similarly to that which was observed by Hu et al [ 31 ]. According to Qian et al [ 32 ], accumulation of nitrites during the denitrification process can be caused by higher pH values.…”

Section: Resultssupporting

confidence: 79%

The Behavior of Terbuthylazine, Tebuconazole, and Alachlor during Denitrification Process

Pániková,

Bílková,

Malá

2023

JoX

View full text Add to dashboard Cite

Pesticide compounds can influence denitrification processes in groundwater in many ways. This study observed behavior of three selected pesticides under denitrifying conditions. Alachlor, terbuthylazine, and tebuconazole, in a concentration of 0.1 mL L−1, were examined using two laboratory denitrifications assays: a “short” 7-day and a “long” 28-day test. During these tests, removal of pesticides via adsorption and biotic decomposition, as well as the efficiency of nitrate removal in the presence of the pesticides, were measured. No considerable inhibition of the denitrification process was observed for any of the pesticides. On the contrary, significant stimulation was observed after 21 days for alachlor (49%) and after seven days for terbuthylazine (40%) and tebuconazole (36%). Adsorption was in progress only during the first seven days in the case of all tested pesticides and increased only negligibly afterwards. Immediate adsorption of terbuthylazine was probably influenced by the mercuric chloride inhibitor. A biotic loss of 4% was measured only in the case of alachlor.

show abstract

“…V průběhu denitrifikace se mohou dusičnany redukovat na dusitany, N2O a NH4 + [15]. Ani v jednom případě nedošlo k akumulaci dusitanů, nejvyšší hodnota N-NO2 byla zjištěna u vzorku 3, 0,492 mg/l.…”

Section: Vliv Atrazinu Na Denitrifikační Procesunclassified

Chování atrazinu za denitrifikačních podmínek

Pániková¹

2022

Juniorstav

View full text Add to dashboard Cite

Atrazin patří mezi nejvíce perzistentní pesticidy, má negativní vliv na životní prostředí a lidský organizmus. Tato látka je častým kontaminantem podzemních vod, ve kterých převládají ideální podmínky pro denitrifikační proces.Pomocí metodiky dlouhodobého testu byl zkoumán atrazin za denitrifikačních podmínek, vliv na samotný proces denitrifikace a jeho transformační chování. Po 28 dnech byl pozorován jako dominantní proces adsorpce na topolové hobliny, 30,6 %. Byl zjištěn biotický úbytek 9,8 % a při koncentraci 0,1 mg/l atrazin významně neovlivnil denitrifikační proces. Stimulace dosáhla hodnoty 6,9 %.

show abstract

Effects of carbon availability in a woody carbon source on its nitrate removal behavior in solid-phase denitrification

Cited by 36 publications

References 46 publications

Improved Denitrification Performance of Polybutylene Succinate/Corncob Composite Carbon Source by Proper Pretreatment: Performance, Functional Genes and Microbial Community Structure

Improved Denitrification Performance of Polybutylene Succinate/Corncob Composite Carbon Source by Proper Pretreatment: Performance, Functional Genes and Microbial Community Structure

The Behavior of Terbuthylazine, Tebuconazole, and Alachlor during Denitrification Process

Chování atrazinu za denitrifikačních podmínek

Contact Info

Product

Resources

About