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Néstor A. Urbina-Suarez, Cristian J. Salcedo-Pabón, German L. López-Barrera, Janet B. García-Martínez, Andrés F. Barajas-Solano and Fiderman Machuca-Martínez
A bicarbonate-peroxide (BAP) system was evaluated to improve the quality of industrial tannery wastewater using an I-optimal experimental design with four variables (temperature, initial pH, bicarbonate, and H2O2 concentration). The response variables we...
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Yuanhao Zhu, Chenchen Wei, Yanbing Chi and Peiling Yang
Reclaimed water (RW) is widely used in agricultural systems; however, it affects soil properties and the surrounding environment, thus influencing soil nitrogen transformation and increasing N2O and NO emissions. Understanding the influencing mechanism o...
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Paulina Vilela, Kijeon Nam and Changkyoo Yoo
Partial nitritation (PN) coupled with the anaerobic ammonium oxidation (Anammox) process has improved ammonium removal in wastewater treatment plants (WWTPs). The operation conditions of this process, i.e., the dissolved oxygen (DO) and the influent ammo...
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Chunzhong Wei and Wenjie Zhang
Anammox bacteria can remove ammonium directly, which is different from what was previously believed. This is an important process for the global nitrogen cycle. Anammox bacteria were first identified in sewage treatment systems and were later proven to e...
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Zhaoxu Peng, Minghui Liu, Tingmei Li, Wangcheng Zhang, Yanpeng Wang, Luji Yu and Jiantao Ji
Given increasingly prominent environmental issues, there is a pressing need to satisfy more stringent emission standards for wastewater treatment plants (WWTP) while concurrently prioritizing energy conservation; a new up-flow layered nitrogen removal fi...
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Weiqiang Xiong, Yunjie Liu, Tianfu Zhang, Shixi Wu, Dawen Zeng, Xiang Guo and Aimin Pang
Aluminium?lithium alloy (Al?Li alloy) powder has excellent ignition and combustion performance. The combustion product of Al?Li alloy powder combined with ammonium perchlorate is gaseous at the working temperature of solid rocket motors, which greatly re...
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Mingchuan Zhang, Xi Chen, Xinyang Xu, Zhongtian Fu and Xin Zhao
After the anaerobic digestion of livestock manure, high concentrations of nutrients still remain. Treatment of livestock wastewater through partial nitrification coupled with anaerobic ammonium oxidation (ANAMMOX) could be a useful technology depending o...
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Ye Lim Park, Hyun Ho Lee, Sung Un Kim, Namgoo Kang and Chang Oh Hong
Metals, including copper (Cu), iron (Fe), and zinc (Zn), are associated with nitrous oxide (N2O) production processes, such as nitrification and denitrification. This study aimed to elucidate the effects of Cu, Fe, and Zn on N2O emissions and to determin...
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Natalia Kapetanaki, Evangelia Krasakopoulou, Eleni Stathopoulou, Manos Dassenakis and Michael Scoullos
Normally atmospheric CO2 is the major driver of ocean acidification (OA); however, local discharge/degradation of organic matter (OM) and redox reactions can exacerbate OA in coastal areas. In this work we study the response of nutrient and carbon system...
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Hyeoksun Choi and Sanghwa Oh
The abiotic reduction of NO3- to NO2-?coupled with the oxidation of labile organic materials such as citric acid, syringic acid and natural organic matter (NOM) and NH4+ through the goethite-mediated Fe(III)/Fe(II) cycle under anaerobic condition?was inv...
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