Results 21 to 30 of about 295,308 (168)

Interconversion and Removal of Inorganic Nitrogen Compounds via UV Irradiation

ChemEngineering, 2023
Dissolved inorganic nitrogen (DIN) species are key components of the nitrogen cycle and are the main nitrogen pollutants in groundwater. This study investigated the interconversion and removal of the principal DIN compounds (NO3−, NO2− and NH4+) via UV ...
Alejandro M. Senn, Natalia Quici
doaj   +1 more source

Achieving robust and highly efficient nitrogen removal in a mainstream anammox reactor by introducing low concentrations of readily biodegradable organics

Frontiers in Microbiology, 2023
In this study, an anammox reactor was operated to treat low-strength (NH4+ + NO2−, 25–35  mg/L) wastewater without (phase I) or with (phase II) readily biodegradable chemical oxygen demand (rbCOD).
Yandong Yang, Yandong Yang, Yanan Long, Jiarui Xu, Shichong Liu, Lei Liu, Changqing Liu, Yong Tian   +7 more
doaj   +1 more source

Improving efficiency for removal of ammoniacal nitrogen from wastewaters using hydrodynamic cavitation

Ultrasonics Sonochemistry, 2021
The present study reports significant improvements in the removal of ammoniacal nitrogen from wastewater which is an important problem for many industries such as dyes and pigment, distilleries and fisheries.
Pravin B. Patil, Vinay M. Bhandari, Vivek V. Ranade   +2 more
doaj   +1 more source

Artificial wetlands performance: nitrogen removal

Water Science and Technology, 2008
Artificial wetlands (AW) are a promising option for wastewater treatment in small communities due to their high performance in nutrients removal and low operation and maintenance costs. Nitrogen can favour the growth of algae in water bodies causing eutrophication when present at high concentrations. Nitrogen can be removed through different mechanisms
Carmen, Durán-de-Bazúa, Alejandro, Guido-Zárate, Thalía, Huanosta, Rosa Martha, Padrón-López, Jesús, Rodríguez-Monroy   +4 more
openaire   +2 more sources

Optimizing nitrogen removal in the BioDenitro process

Water Science and Technology, 2004
The potential and limits of different configurations of the BioDenitro-alternating process to suit the various design cases that can arise depending on the wastewater characteristics, space necessary and effluent nitrogen requirements were analysed through simulations of the activated sludge model No. 2.
I, Irizar, J, Suescun, F, Plaza, L, Larrea   +3 more
openaire   +2 more sources

Enhancing nitrogen removal from wastewater via photoelectrocatalytic oxidation over a Ru/TiO2 system

Chemical Engineering Journal Advances
Water pollution is a significant global environmental concern that threatens the sustainable progress of humanity. In this study, the concepts of photocatalytic oxidation in the cathodic zone (NH4+-N adsorption-NH3-N conversion) and electrochemical ...
Bo Zhang, Yan Zhao, Xiaomin Hu, Yong Jing, Guangsheng Qian   +4 more
doaj   +1 more source

Effects of the Fluid Replacement Method During Online Hemodiafiltration on the Solute Removal Performance and Biocompatibility Using the Asymmetric Cellulose Triacetate Membrane

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Pre‐dilution online hemodiafiltration (Pre‐HDF) is predominantly used in Japan, whereas post‐dilution online HDF (Post‐HDF) is more common in Europe. An asymmetric cellulose triacetate (ATA) membrane may improve biocompatibility.
Kenji Sakurai, Yoshitaka Kurihara, Fumi Yamauchi, Hiromi Hosoya, Takeshi Saito   +4 more
wiley   +1 more source

New anaerobic process of nitrogen removal

Water Science and Technology, 2006
This paper reports on successful laboratory testing of a new nitrogen removal process called DEAMOX (DEnitrifying AMmonium OXidation) for the treatment of strong nitrogenous wastewater such as baker's yeast effluent. The concept of this process combines the recently discovered ANAMMOX (ANaerobic AMMonium OXidation) reaction with autotrophic ...
S, Kalyuzhnyi, M, Gladchenko, A, Mulder, B, Versprille   +3 more
openaire   +2 more sources

Kinetics and influential factors of nanoscale iron-facilitated nitrate nitrogen removal

Tecnología y ciencias del agua, 2017
Song, Y. & Song, S. (March-April, 2017). Kinetics and influential factors of nanoscale iron-facilitated nitrate nitrogen removal. Water Technology and Sciences (in Spanish), 8(2), 93-103.
Song Yujia, Song Shoufa
doaj   +1 more source

Effect of temperature and NH4+-N influent concentration on the nitrogen removal effect of luffa cylindrical sponge carrier sequencing batch biofilm reactor [PDF]

E3S Web of Conferences, 2020
In order to improve the efficiency of biological nitrogen removal, the experiment used the luffa cylindrical sponge carrier sequencing batch biofilm reactor to treat domestic sewage, and it studied the temperature on the removal effect of TN in the ...
Li Yafeng, Wu Jianbo, Bai Yuemeng, Feng Ning   +3 more
doaj   +1 more source