Keyword search (3,448 papers available)


Effect of Fe2+ ions on gypsum precipitation during bulk crystallization of reverse osmosis concentrates.

Author(s): Melliti E, Touati K, Van der Bruggen B, Elfil H

In reverse osmosis desalination, the concentrate is a saline solution that may become supersaturated. Heterogeneous nucleation of salts occurs at the membrane surface, resulting in the buildup of inorganic deposits on the membrane. The inorganic nucleation ...

Article GUID: 32814139
Effects of chronic exposure to selenomethionine on social learning outcomes in zebrafish (Danio rerio): serotonergic dysregulation and oxidative stress in the brain.

Author(s): Attaran A, Salahinejad A, Naderi M, Crane AL, Niyogi S, Chivers DP

Chemosphere. 2020 Jan 11;247:125898 Authors: Attaran A, Salahinejad A, Naderi M, Crane AL, Niyogi S, Chivers DP

Article GUID: 31972490
Exploring the use of ceramic disk filter coated with Ag/ZnO nanocomposites as an innovative approach for removing Escherichia coli from household drinking water.

Author(s): Huang J, Huang G, An C, Xin X, Chen X, Zhao Y, Feng R, Xiong W

Chemosphere. 2019 Dec 06;245:125545 Authors: Huang J, Huang G, An C, Xin X, Chen X, Zhao Y, Feng R, Xiong W

Article GUID: 31864067
A biophysiological perspective on enhanced nitrate removal from decentralized domestic sewage using gravitational-flow multi-soil-layering systems.

Author(s): Song P, Huang G, Hong Y, An C, Xin X, Zhang P

Chemosphere. 2019 Sep 14;240:124868 Authors: Song P, Huang G, Hong Y, An C, Xin X, Zhang P

Article GUID: 31542583
Electrochemical efficacy of a carboxylated multiwalled carbon nanotube filter for the removal of ibuprofen from aqueous solutions under acidic conditions.

Author(s): Bakr AR, Rahaman MS

Chemosphere. 2016 Jun;153:508-20 Authors: Bakr AR, Rahaman MS

Article GUID: 27035389
Electro-demulsification of water-in-oil suspensions enhanced with implementing various additives.

Author(s): Taslimi Taleghani S, Fellah Jahromi A, Elektorowicz M

Chemosphere. 2019 May 20;233:157-163 Authors: Taslimi Taleghani S, Fellah Jahromi A, Elektorowicz M

Article GUID: 31173953
Hierarchical magnetic petal-like Fe3O4-ZnO@g-C3N4 for removal of sulfamethoxazole, suppression of photocorrosion, by-products identification and toxicity assessment

Author(s): Mirzaei A; Chen Z; Haghighat F; Yerushalmi L;

Herein, a petal-like photocatalyst, Fe3O4-ZnO@g-C3N4 (FZG) with different g-C3N4 to ZnO ratios was synthesized with hierarchical structure. The FZG1 photocatalyst, having the weight ratio of 1:1 for the initial urea and Fe3O4-ZnO (Fe-ZnO), presented the hig...

Article GUID: 29705637
Hydrothermal/solvothermal synthesis and treatment of TiO2 for photocatalytic degradation of air pollutants: Preparation, characterization, properties, and performance.

Author(s): Mamaghani AH, Haghighat F, Lee CS

Chemosphere. 2019 Mar;219:804-825 Authors: Mamaghani AH, Haghighat F, Lee CS

Article GUID: 30572234
Wastewater treatment in amine-based carbon capture.

Author(s): Dong C, Huang G, Cheng G, An C, Yao Y, Chen X, Chen J

Chemosphere. 2019 May;222:742-756 Authors: Dong C, Huang G, Cheng G, An C, Yao Y, Chen X, Chen J

Article GUID: 30738317
Title:A biophysiological perspective on enhanced nitrate removal from decentralized domestic sewage using gravitational-flow multi-soil-layering systems.
Authors:Song P,  Huang G,  Hong Y,  An C,  Xin X,  Zhang P
Link:https://www.ncbi.nlm.nih.gov/pubmed/31542583?dopt=Abstract
DOI:10.1016/j.chemosphere.2019.124868
Category:Chemosphere
PMID:31542583
Dept Affiliation: ENCS
1 MOE Key Laboratory of Resources and Environmental Systems Optimization, North China Electric Power University, Beijing, 102206, China.
2 Center for Energy, Environment and Ecology Research, UR-BNU, Beijing Normal University, Beijing, 100875, China. Electronic address: huang@iseis.org.
3 Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, Quebec, H3G 1M8, Canada.
4 Institute for Energy, Environment and Sustainable Communities, University of Regina, Regina, S4S 0A2, Canada.

Description:

A biophysiological perspective on enhanced nitrate removal from decentralized domestic sewage using gravitational-flow multi-soil-layering systems.

Chemosphere. 2019 Sep 14;240:124868

Authors: Song P, Huang G, Hong Y, An C, Xin X, Zhang P

Abstract

Multi-soil-layering (MSL) system with brick-wall pattern structure and gravitational flow can be used for decentralized rural domestic sewage treatment. The capability of soil for contaminant removal is maximized within soil mixture blocks (SMBs). However, the performance of removing nitrate was still not ideal during operation. To improve its performance in MSL system, the relationship between biophysiological characteristics of denitrifying species and operating conditions was studied. Microbial species diversity of activated sludge and soil samples were analyzed. The significant effects of independent factors and their interactions on microbial species diversity and denitrifying species abundance were revealed on the basis of factorial analysis. The results indicated activated sludge in SMBs played a key role in increasing the richness of denitrifying species in MSL system. Slow-release poly (butylene succinate) (PBS) had the most dominant positive effect on increasing denitrifying species abundance. Submersion had significantly positive effect on species richness in SMBs. These three factors, including activated sludge, PBS in SMBs, and submersion condition had different significant effects on microbial responses. They were favorable for denitrification and ensuring a better removal efficiency of nitrate and total nitrogen. The porous zeolites were served as the habitats for most of aerobic bacteria to form biofilms, which could promote the oxygen consumption in both sewage and system to improve denitrification in SMBs. The results could help on the enhancement of denitrification in MSL system from biophysiological insights. It can provide a sound strategy for using MSL system with great performance on contaminant removal.

PMID: 31542583 [PubMed - as supplied by publisher]