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Journal articles on the topic 'Nitrogen membrane plant'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Parulekar, Prasad J. "Chemical Plant Utility – Nitrogen System Design." International Journal for Research in Applied Science and Engineering Technology 9, no. 11 (2021): 1560–67. http://dx.doi.org/10.22214/ijraset.2021.39047.

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Abstract: The study is been conducted to understand the different techniques to separate nitrogen from atmospheric air. Separation of nitrogen takes place by following techniques: Cryogenic air separation, Pressure swing adsorption and Membrane separation technique. Cryogenic air separation operates at a very low temperature, which uses the principle of rectification to separate nitrogen at a very high purity (99.999%). Pressure swing adsorption rely on the fact that higher the pressure, more the gas is adsorbed which results in high purity (95-99.99%) of nitrogen. Membrane separation technolo

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2

Richter, L., M. Wichern, M. Grömping, U. Robecke, and J. Haberkamp. "Ammonium recovery from process water of digested sludge dewatering by membrane contactors." Water Practice and Technology 15, no. 1 (2020): 84–91. http://dx.doi.org/10.2166/wpt.2020.002.

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Abstract Membrane contactors are a promising alternative for nitrogen removal and recovery from process water compared to other physicochemical and biological sidestream treatment processes. Münster wastewater treatment plant (WWTP) is the first municipal WWTP in Germany operating a full-scale membrane contactor system to improve the nitrogen elimination and recovery efficiency. Factors influencing the operation and membrane performance are investigated in an accompanying research project. Additional operational aspects of the applied membrane modules are investigated in detail using a bench-s

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Shui, Yong Hong, Jian Li, Xil Ning Feng, Xue Jun Jiang, Qiao Qiao Li, and Ai She Shui. "Nitrogen Removal along Vertical direction by Plant Biological Membrane System." Advanced Materials Research 955-959 (June 2014): 2463–68. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.2463.

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Based on the equipment of integrated constructed wetlands (ICWs) with independent intellectual property rights. Plant biological membrane system (PBMS) was constructed to purify nitrogen of sanitary sewage. PBMS includes palm silk, non-woven and floating plant (Trifolium repens L.). Total nitrogen (TN), ammonia nitrogen (NH3-N) was investigated to evaluate the effects of the layered purification and resistance to the outside impact. The results showed that layered purification occurred along the flowing vertical direction. The average removal rate of TN, NH3-N and total dissolved solids was 65

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Molinuevo-Salces, Beatriz, Berta Riaño, Matias B. Vanotti, David Hernández-González, and María Cruz García-González. "Pilot-Scale Demonstration of Membrane-Based Nitrogen Recovery from Swine Manure." Membranes 10, no. 10 (2020): 270. http://dx.doi.org/10.3390/membranes10100270.

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Gas-permeable membranes technology presents a high potential for nitrogen (N) recovery from wastewaters rich in ammonia (NH3). The EU project Ammonia Trapping (AT) is aimed at transferring knowledge from the lab-scale level to on-farm pilot-scale level, using this technology to recover NH3 from livestock wastewaters. The goal of this study is to report the results of an on-farm pilot-scale demonstration plant using gas-permeable membranes to recover N from raw swine manure. After a setup optimization of the plant, stable, and continuous operation was achieved. The maximum NH3 recovery rate obt

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Corzo, Javier, Mónica Santamaria, and Angel M. Gutierrez-Navarro. "Transient Energy Coupling Between Rhizobia and Legume Cells Mediated by the Peribacteroid Membrane ATPase Proton Pump." Bioscience Reports 17, no. 4 (1997): 389–400. http://dx.doi.org/10.1023/a:1027357317291.

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We present a model for the metabolic coupling between rhizobia and plant cell in the nitrogen-fixing legume root nodules. The symbiosome, an organelle-like structure formed by the modified rhizobia (the bacteroids) enclosed by a plant cell derived peribacteroid membrane, is an unique structure in which two energized membranes are closely packed: the inner bacteroid membrane and the peribacteroid membrane that possesses an ATPase proton pump. The model is based on the following points: (i) The permeability for hydrogen ions of the outer membrane of the rhizobia. (ii) The reversibility of the AT

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Lee, F. W., K. P. Wai, and C. H. Koo. "Enhancing Contaminant Removal in Sewage Treatment Plant Effluent with PES/Ag Membrane." Journal of Applied Membrane Science & Technology 28, no. 1 (2024): 15–26. http://dx.doi.org/10.11113/amst.v28n1.282.

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In this study, a silver-infused membrane was fabricated using an ex-situ method that involved blending silver nanoparticles (AgNPs) with Polyethersulfone (PES) as the base polymer in treating sewage treatment plant (STP) effluent. Three distinct membranes denoted as S1(Ag0), S2(Ag0.5) and S3(Ag2.0) were manufactured with varying weight percentages of polymer and silver (Ag) contents. The objective was to investigate the effect of the dosage of AgNPs on membrane characterization and performance, encompassing pure water flux filtration tests, organic rejection tests, and antibacterial properties

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Trevaskis, Ben, Gillian Colebatch, Guilhem Desbrosses, et al. "Differentiation of Plant Cells During Symbiotic Nitrogen Fixation." Comparative and Functional Genomics 3, no. 2 (2002): 151–57. http://dx.doi.org/10.1002/cfg.155.

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Nitrogen-fixing symbioses between legumes and bacteria of the family Rhizobiaceae involve differentiation of both plant and bacterial cells. Differentiation of plant root cells is required to build an organ, the nodule, which can feed and accommodate a large population of bacteria under conditions conducive to nitrogen fixation. An efficient vascular system is built to connect the nodule to the root, which delivers sugars and other nutrients to the nodule and removes the products of nitrogen fixation for use in the rest of the plant. Cells in the outer cortex differentiate to form a barrier to

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Gürel, Levent, and Hanife Büyükgüngör. "Treatment of slaughterhouse plant wastewater by using a membrane bioreactor." Water Science and Technology 64, no. 1 (2011): 214–19. http://dx.doi.org/10.2166/wst.2011.677.

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The use of a membrane bioreactor (MBR) for removal of organic substances and nutrients from slaughterhouse plant wastewater was investigated. The chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP) concentrations of slaughterhouse wastewater were found to be approximately 571 mg O2/L, 102.5 mg/L, and 16.25 mg PO4-P/L, respectively. A submerged type membrane was used in the bioreactor. The removal efficiencies for COD, total organic carbon (TOC), TP and TN were found to be 97, 96, 65, 44% respectively. The COD value of wastewater was decreased to 16 mg/L (COD discharge

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9

Woo, Bryen. "Membrane thickening aerobic digestion processes." Water Science and Technology 69, no. 7 (2014): 1509–17. http://dx.doi.org/10.2166/wst.2014.051.

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Sludge management accounts for approximately 60% of the total wastewater treatment plant expenditure and laws for sludge disposal are becoming increasingly stringent, therefore much consideration is required when designing a solids handling process. A membrane thickening aerobic digestion process integrates a controlled aerobic digestion process with pre-thickening waste activated sludge using membrane technology. This process typically features an anoxic tank, an aerated membrane thickener operating in loop with a first-stage digester followed by second-stage digestion. Membrane thickening ae

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Díaz, Verónica, Laura Antiñolo, José Manuel Poyatos Capilla, Mari Carmen Almécija, María del Mar Muñío, and Jaime Martín-Pascual. "Nutrient Removal and Membrane Performance of an Algae Membrane Photobioreactor in Urban Wastewater Regeneration." Membranes 12, no. 10 (2022): 982. http://dx.doi.org/10.3390/membranes12100982.

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The increase in industry and population, together with the need for wastewater reuse, makes it necessary to implement new technologies in the circular economy framework. The aim of this research was to evaluate the quality of the effluent of an algae membrane photobioreactor for the treatment of the effluent of an urban wastewater treatment plant, to characterise the ultrafiltration membranes, to study the effectiveness of a proposed cleaning protocol, and to analyse the performance of the photobioreactor. The photobioreactor operated under two days of hydraulic retention times feed with the e

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Murakami, T., J. Usui, K. Takamura, and T. Yoshikawa. "Application of immersed-type membrane separation activated sludge process to municipal wastewater treatment." Water Science and Technology 41, no. 10-11 (2000): 295–301. http://dx.doi.org/10.2166/wst.2000.0665.

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Pilot plant studies were carried out using actual wastewater to investigate the applicability of a membrane separation activated sludge (MSAS) process to municipal wastewater treatment. A small-scale pilot plant (6.7 m3/day) with immersed flat sheet membrane was operated at the flux of 0.4 m3/m2/day. Continuous operation for 140 days without chemical cleaning was possible. Average Sludge production ratio was about 0.6. No significant difference was observed in the dewaterability between membrane separation activated sludge and conventional activated sludge at the CST test. Large-scale pilot pl

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Day, David A., and Penelope M. C. Smith. "Iron Transport across Symbiotic Membranes of Nitrogen-Fixing Legumes." International Journal of Molecular Sciences 22, no. 1 (2021): 432. http://dx.doi.org/10.3390/ijms22010432.

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Iron is an essential nutrient for the legume-rhizobia symbiosis and nitrogen-fixing bacteroids within root nodules of legumes have a very high demand for the metal. Within the infected cells of nodules, the bacteroids are surrounded by a plant membrane to form an organelle-like structure called the symbiosome. In this review, we focus on how iron is transported across the symbiosome membrane and accessed by the bacteroids.

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Cosenza, Alida, Trapani Daniele Di, Mofatto Paulo Marcelo Bosco, and Giorgio Mannina. "Sewage sludge minimisation by OSA-MBR: A pilot plant experiment." Chemosphere 347 (November 15, 2023): 140695. https://doi.org/10.1016/j.chemosphere.2023.140695.

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This study presents the excess sludge minimisation in a Membrane Bioreactor (MBR) system by an Oxic Settling Anaerobic (OSA) process. The pilot plant was fed with real wastewater and OSA was operated with two different hydraulic retention times (HRT), respectively 4 (Period II) and 6 h (Period III) and compared to an MBR (Period I). Multiple parameters/variables were monitored: sludge minimisation, nitrogen and carbon removal, membrane fouling, and biokinetic behaviour through respirometry. With respect to the current literature, greenhouse gas emissions were also here

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Haimi, H., S. Risteelä, M. Di Pofi, and J. Lahtinen. "Upgrade of the Taskila WWTP with an MBR line: the first treatment results, performance assessment and lessons learnt." Water Practice and Technology 15, no. 4 (2020): 1111–25. http://dx.doi.org/10.2166/wpt.2020.084.

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Abstract In this paper, we present the first results of a large-scale membrane bioreactor application implemented for increasing the wastewater treatment plant capacity. The Taskila plant in Finland was upgraded in 2018 and is now operated as a hybrid system with parallel membrane bioreactor and conventional biological lines. The results showed that membrane filtration improved the plant performance significantly in terms of the solids and pathogens removal. Nitrogen removal has been stable with the current operating set-points and notably better than before the plant expansion. The analysis u

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Muratore, Chiara, Luca Espen, and Bhakti Prinsi. "Nitrogen Uptake in Plants: The Plasma Membrane Root Transport Systems from a Physiological and Proteomic Perspective." Plants 10, no. 4 (2021): 681. http://dx.doi.org/10.3390/plants10040681.

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Nitrogen nutrition in plants is a key determinant in crop productivity. The availability of nitrogen nutrients in the soil, both inorganic (nitrate and ammonium) and organic (urea and free amino acids), highly differs and influences plant physiology, growth, metabolism, and root morphology. Deciphering this multifaceted scenario is mandatory to improve the agricultural sustainability. In root cells, specific proteins located at the plasma membrane play key roles in the transport and sensing of nitrogen forms. This review outlines the current knowledge regarding the biochemical and physiologica

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Emerich, David W., and Hari B. Krishnan. "Symbiosomes: temporary moonlighting organelles." Biochemical Journal 460, no. 1 (2014): 1–11. http://dx.doi.org/10.1042/bj20130271.

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Symbiosomes are a unique structural entity that performs the role of biological nitrogen fixation, an energy-demanding process that is the primary entryway of fixed nitrogen into the biosphere. Symbiosomes result from the infection of specific rhizobial strains into the roots of an appropriate leguminous host plant forming an organ referred to as a nodule. Within the infected plant cells of the nodule, the rhizobia are encased within membrane-bounded structures that develop into symbiosomes. Mature symbiosomes create an environment that allows the rhizobia to differentiate into a nitrogen-fixi

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17

López-Lara, Isabel M., Christian Sohlenkamp, and Otto Geiger. "Membrane Lipids in Plant-Associated Bacteria: Their Biosyntheses and Possible Functions." Molecular Plant-Microbe Interactions® 16, no. 7 (2003): 567–79. http://dx.doi.org/10.1094/mpmi.2003.16.7.567.

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Membrane lipids in most bacteria generally consist of the glycerophospholipids phosphatidylglycerol, cardiolipin, and phosphatidylethanolamine (PE). A subset of bacteria also possesses the methylated derivatives of PE, monomethylphosphatidylethanolamine, dimethylphosphatidylethanolamine, and phosphatidylcholine (PC). In Sinorhizobium meliloti, which can form a nitrogen-fixing root nodule symbiosis with Medicago spp., PC can be formed by two entirely different biosynthetic pathways, either the PE methylation pathway or the recently discovered PC synthase pathway. In the latter pathway, one of t

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18

Assis, Tatiane Martins de, Aruani Letícia da Silva Tomoto, Ana Paula Trevisan Lied, et al. "Kinetic of nitrogen consumption by Anammox process in membrane biofilm reactors operated in sequential batch." Ciência e Natura 44 (April 20, 2022): e20. http://dx.doi.org/10.5902/2179460x68843.

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Biological nitrogen removal via Anammox is an advantageous technology in the nitrogen treatment effluents with a low Carbon/Nitrogen ratio, a process that makes this route interesting for the most different types of industries, agribusinesses, and urban effluent treatment plants. Achieving robust Anammox biomass for use in full-scale plants is still a challenge that motivates studies of biomass enrichment and the search for kinetic parameters of substrate consumption rate that help optimize the conduction of reactors. According to the previously mentioned, this work aimed to carry out the kine

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Plett, Darren C., Kosala Ranathunge, Vanessa J. Melino, Noriyuki Kuya, Yusaku Uga, and Herbert J. Kronzucker. "The intersection of nitrogen nutrition and water use in plants: new paths toward improved crop productivity." Journal of Experimental Botany 71, no. 15 (2020): 4452–68. http://dx.doi.org/10.1093/jxb/eraa049.

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Abstract Water and nitrogen availability limit crop productivity globally more than most other environmental factors. Plant availability of macronutrients such as nitrate is, to a large extent, regulated by the amount of water available in the soil, and, during drought episodes, crops can become simultaneously water and nitrogen limited. In this review, we explore the intricate relationship between water and nitrogen transport in plants, from transpiration-driven mass flow in the soil to uptake by roots via membrane transporters and channels and transport to aerial organs. We discuss the roles

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Kubin, K., M. Kraume, and W. Dorau. "Investigation of nitrogen removal in a cascaded membrane bioreactor." Water Science and Technology 46, no. 4-5 (2002): 241–47. http://dx.doi.org/10.2166/wst.2002.0596.

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Two different plants in different scales were compared. The main characteristic of the plants is the division of the nitrification volume into separate chambers. To gain more information about the internal conversion processes, concentration profiles of COD, NO3-N and NH4-N along the pathway of the waste water were measured. Moreover, the effect of different plant configurations and different operation conditions involving the internal circulation streams on the biological conversion processes were studied. Except for some temporary operation problems, the treatment performance of the plants w

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Mugume, Yosia, Geng Ding, Maria Emilia Dueñas, et al. "Complex Changes in Membrane Lipids Associated with the Modification of Autophagy in Arabidopsis." Metabolites 12, no. 2 (2022): 190. http://dx.doi.org/10.3390/metabo12020190.

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Autophagy is a conserved mechanism among eukaryotes that degrades and recycles cytoplasmic components. Autophagy is known to influence the plant metabolome, including lipid content; however, its impact on the plant lipidome is not fully understood, and most studies have analyzed a single or few mutants defective in autophagy. To gain more insight into the effect of autophagy on lipid concentrations and composition, we quantitatively profiled glycerolipids from multiple Arabidopsis thaliana mutants altered in autophagy and compared them with wild-type seedlings under nitrogen replete (+N; norma

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Tsyganova, Anna V., Anna B. Kitaeva, and Viktor E. Tsyganov. "Cell differentiation in nitrogen-fixing nodules hosting symbiosomes." Functional Plant Biology 45, no. 2 (2018): 47. http://dx.doi.org/10.1071/fp16377.

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The nitrogen-fixing nodule is a unique ecological niche for rhizobia, where microaerobic conditions support functioning of the main enzyme of nitrogen fixation, nitrogenase, which is highly sensitive to oxygen. To accommodate bacteria in a symbiotic nodule, the specialised infected cells increase in size owing to endoreduplication and are able to shelter thousands of bacteria. Bacteria are isolated from the cytoplasm of the plant cell by a membrane-bound organelle-like structure termed the symbiosome. It is enclosed by a symbiosome membrane, mainly of plant origin but with some inclusion of ba

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Abegglen, C., and H. Siegrist. "Domestic wastewater treatment with a small-scale membrane bioreactor." Water Science and Technology 53, no. 3 (2006): 69–78. http://dx.doi.org/10.2166/wst.2006.077.

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A small-scale membrane plant for treating the domestic wastewater of a four-person household is presented. The membrane bioreactor has been in operation for 6 months and achieves elimination rates of 90, 95 and 80% for total organic carbon, chemical oxygen demand and total nitrogen, respectively. Only a small amount sludge is produced. The permeate is reused for flushing toilets and has a yellowish colour. After investigations of the effluent quality, decolourisation of the permeate, energy efficiency and control strategies in the first year, urine will be treated separately in an automated pr

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Patrick, John W., Wenhao Zhang, Stephen D. Tyerman, Christina E. Offler, and N. Alan Walker. "Role of membrane transport in phloem translocation of assimilates and water." Functional Plant Biology 28, no. 7 (2001): 697. http://dx.doi.org/10.1071/pp01023.

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Most growth and storage organs (sinks) of higher plants import assimilates in solution by bulk flow through the phloem, driven by differences in hydrostatic pressure. These differences in pressure, located between the ends of the interconnecting phloem path, are generated by osmotic water movement, driven in turn by membrane transport of solutes. Sucrose, amino-nitrogen compounds and potassium represent the osmotically important solutes found in phloem contents of most species. Phloem loading and unloading events of these assimilate species play central roles in determining phloem translocatio

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Pavlík, M., D. Pavlíková, J. Balík, and M. Neuberg. "The contents of amino acids and sterols in maize plants growing under different nitrogen conditions." Plant, Soil and Environment 56, No. 3 (2010): 125–32. http://dx.doi.org/10.17221/214/2009-pse.

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The effect of nitrogen nutrition on phytosterol and amino acid content in aboveground biomass of maize (<I>Zea mays</I> L.) was investigated in a pot experiment. For cultivation of maize plants nitrogen dose (2 or 4 g N/pot) was applied in the form of ammonium nitrate (AN) for control treatments or urea ammonium nitrate solution (UAN). UAN solution was applied according to the CULTAN method (Controlled Uptake Long Term Ammonium Nutrition). The content of amino acids as important nitrogen-containing compounds in plant biomass was affected by nitrogen nutrition. An increase of glutam

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Plaza, Elzbieta, Jan Bosander, and Jozef Trela. "Factors Affecting Biological Nitrogen Removal Efficiency in a Large Wastewater Treatment Plant." Water Science and Technology 24, no. 7 (1991): 121–31. http://dx.doi.org/10.2166/wst.1991.0193.

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The pre-denitrification method, with internal carbon source for biological nitrogen removal, has been studied in full-scale experiments at a large wastewater treatment plant (flow 130,000 m3/d). Factors controlling nitrogen removal, such as fraction of anoxic zone and organic material content in wastewater are discussed. A flexible system with fine bubble membrane disc diffusers made it possible to change the ratio between the volumes for nitrification and denitrification. The denitrification process was limited by lack of organic carbon in the wastewater and increasing the fraction of anoxic

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Chiesa, Paolo, Thomas G. Kreutz, and Giovanni G. Lozza. "CO2 Sequestration From IGCC Power Plants by Means of Metallic Membranes." Journal of Engineering for Gas Turbines and Power 129, no. 1 (2005): 123–34. http://dx.doi.org/10.1115/1.2181184.

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This paper investigates novel IGCC plants that employ hydrogen separation membranes in order to capture carbon dioxide for long-term storage. The thermodynamic performance of these membrane-based plants are compared with similar IGCCs that capture CO2 using conventional (i.e., solvent absorption) technology. The basic plant configuration employs an entrained-flow, oxygen-blown coal gasifier with quench cooling, followed by an adiabatic water gas shift (WGS) reactor that converts most of CO contained in the syngas into CO2 and H2. The syngas then enters a WGS membrane reactor where the syngas u

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Mannina, Giorgio, Kartik Chandran, Marco Capodici, Alida Cosenza, Daniele Di Trapani, and Mark C. M. van Loosdrecht. "Greenhouse gas emissions from membrane bioreactors: analysis of a two-year survey on different MBR configurations." Water Science and Technology 78, no. 4 (2018): 896–903. http://dx.doi.org/10.2166/wst.2018.366.

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Abstract This study aimed at evaluating the nitrous oxide (N2O) emissions from membrane bioreactors (MBRs) for wastewater treatment. The study investigated the N2O emissions considering multiple influential factors over a two-year period: (i) different MBR based process configurations; (ii) wastewater composition (municipal or industrial); (iii) operational conditions (i.e. sludge retention time, carbon-to-nitrogen ratio, C/N, hydraulic retention time); (iv) membrane modules. Among the overall analysed configurations, the highest N2O emission occurred from the aerated reactors. The treatment o

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Mouthón-Bello, Javier A., Oscar E. Coronado-Hernández, and Vicente S. Fuertes-Miquel. "Submerged Membrane Bioreactor Configurations for Biological Nutrient Removal from Urban Wastewater: Experimental Tests and Model Simulation." Environments 11, no. 11 (2024): 260. http://dx.doi.org/10.3390/environments11110260.

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Pilot-scale experimental measurements and simulations were utilised to evaluate the nutrient removal efficiency of three submerged membrane bioreactor designs. This study compared setups with post- and pre-denitrification processes. A 625 L pilot plant for treating primary effluent provided the operational data necessary for calibrating the activated sludge model, specifically for chemical oxygen demand and nitrogen removal under steady-state flow. Identical influent conditions were maintained for all configurations while varying the sludge retention times (from 5 to 100 d), hydraulic retentio

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Watanabe, Y., K. Kimura, and T. Suzuki. "Membrane application to water purification process in Japan – development of hybrid membrane system." Water Science and Technology 41, no. 10-11 (2000): 9–16. http://dx.doi.org/10.2166/wst.2000.0596.

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This paper deals with two recent developments made by the authors about the hybrid membrane systems applicable to the water purification. The performance of a hybrid MF membrane system with circulating powdered activated carbon and condensed sludge has been studied using a pilot plant. The powdered activated carbon was intermittently dosed to the system for adsorbing mainly the humic substances. Manganese ions and ammonia nitrogen were biologically oxidized by the iron-oxidizing bacteria and ammonia oxidizing bacteria inhibiting the condensed sludge. In the hybrid MF membrane system, decreasin

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Bosco, Mofatto Paulo Marcelo, Alida Cosenza, Trapani Daniele Di, Lan Wu, Bing-Jie Ni, and Giorgio Mannina. "Carbon footprint reduction by coupling intermittent aeration with submerged MBR: A pilot plant study." Journal of Environmental Chemical Engineering 12 (May 21, 2024): 113115. https://doi.org/10.1016/j.jece.2024.113115.

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To find a possible trade-off between effluent quality, sludge production, energy consumption and GHG emissions, this study monitored the carbon and nutrient removal and greenhouse gas (GHG) emissions in a membrane bioreactor (MBR) pilot plant with intermittent aeration (IA). The pilot plant was operated by alternating aerobic and anoxic conditions inside the biological reactor. Up to 98.2 % of carbon and 76.4 % of nitrogen were respectively remove through this MBR pilot plant with IA. The carbon footprint was equal to 2.4 kgCO2eq m􀀀 3. Indirect emissions contributed th

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Xie, Kang, Jing Song, Si Qing Xia, Li Ping Qiu, Jia Bin Wang, and Shou Bin Zhang. "Treatment of High Salinity Wastewater Using an Intermittently Aerated Membrane Bioreactor." Advanced Materials Research 1092-1093 (March 2015): 1033–36. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.1033.

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In this study, high salinity wastewater was treated by an intermittently aerated membrane bioreactor (IAMBR) and the salinity loadings were set at 35g/L. The activated sludge was inoculated from the municipal wastewater treatment plant. The influent salinity level gradually increased from 0 to 35 g/L with every 5 g/L. With the salt concentration increased to 35 g/L, the performance of IAMBR was significantly affected by higher salinity. The removal efficiencies of the total organic carbon (TOC), ammonia nitrogen (NH4+-N) and total nitrogen (TN) were about 83%, 70% and 51%, respectively. It is

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GILMANOV, Alexander Ya, Maria A. Demenchuk, and Alexander P. SHEVELEV. "DETERMINATION OF UNIT PARAMETERS WITH SELECTIVE MEMBRANES." Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy 7, no. 3 (2021): 71–88. http://dx.doi.org/10.21684/2411-7978-2021-7-3-71-88.

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The energy complex of Russia is largely based on oil and gas potential. One of the ways to maintain the rate of hydrocarbon production is the use of gas methods. In this regard, inexpensive methods of obtaining pure gases are relevant. One of such approaches is the use of installations with selective membranes, the use of which is ineffective without preliminary modeling. There are currently no models that provide accurate quantitative results. Therefore, the main goal of this article is to develop a detailed mathematical model of the gas separation process in an installation with selective me

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Du, Sijia, Meiya Liu, Fang Dong, et al. "Lipidomics Analysis of Tea Leaves Cultured in Hydroponics Reveals That High Nitrogen Application Decreases Tea Plant Resistance to Ultraviolet Radiation." Horticulturae 8, no. 8 (2022): 724. http://dx.doi.org/10.3390/horticulturae8080724.

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Lipid composition in tea leaves is significantly affected by ultraviolet (UV) radiation and nitrogen levels. Here, to reveal the response of lipids in tea plants (Camellia sinensis L.) to the interaction between nitrogen and UV radiation, we treated tea plants with three gradients of UV radiation under two nitrogen levels by the hydroponic method. Lipidomics results show that ultraviolet radiation can decrease neutral lipid (TAG) and increase membrane lipids (including PC, PE, and PG) under hydroponic conditions, indicating that tea plants could survive UV radiation by decomposing TAG to avoid

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Xi, Jiejun, Yuhui Chen, Jin Nakashima, Suo-min Wang, and Rujin Chen. "Medicago truncatula esn1 Defines a Genetic Locus Involved in Nodule Senescence and Symbiotic Nitrogen Fixation." Molecular Plant-Microbe Interactions® 26, no. 8 (2013): 893–902. http://dx.doi.org/10.1094/mpmi-02-13-0043-r.

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Symbiotic interaction between Medicago truncatula and Sinorhizobium meliloti results in the formation on the host roots of new organs, nodules, in which biological nitrogen fixation takes place. In infected cells, rhizobia enclosed in a plant-derived membrane, the symbiosome membrane, differentiate to nitrogen-fixing bacteroids. The symbiosome membrane serves as an interface for metabolite and signal exchanges between the host cells and endosymbionts. At some point during symbiosis, symbiosomes and symbiotic cells are disintegrated, resulting in nodule senescence. The regulatory mechanisms tha

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Laabs, C., G. Amy, M. Jekel, and H. Buisson. "Fouling of low-pressure (MF and UF) membranes by wastewater effluent organic matter (EfOM): characterization of EfOM foulants in relation to membrane properties." Water Supply 3, no. 5-6 (2003): 229–35. http://dx.doi.org/10.2166/ws.2003.0172.

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Low-pressure (micro- and ultrafiltration) membranes are increasingly being used in water reclamation processes treating secondary or tertiary effluent from wastewater treatment plants. The main challenge remains the fouling of membrane surface/pores by organic matter which prevents efficient operation. The extent of this fouling strongly depends on feed water quality as well as membrane properties. The aim of this study is to characterize wastewater effluent organic matter (EfOM) and to describe its fouling behavior in relation to various membrane properties (pore size, charge, material, hydro

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KHRISTYANA, LYA, ENDANG ANGGARWULAN, and MARSUSI MARSUSI. "Growth, saponin and nitrogen content of common plantain (Plantago major L.) tissue with gibberellic acid application (GA3)." Biofarmasi Journal of Natural Product Biochemistry 3, no. 1 (2005): 11–15. http://dx.doi.org/10.13057/biofar/f030103.

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The aims of this research were to study application effect on growth, saponin content and tissue nitrogen of common plantain (Plantago major L.). P. major was one of plant which has potency as a medicinal plant. The addition of GA3 exogenous to the plant would cause GA3 binding with receptor protein in the plasma membrane region, which caused specific gene activation, so that specific RNA molecule formed, and would trigger one or more enzyme forming which regulate plant growth and influence protein synthesis also plant secondary metabolite production. Data elicited by completely randomized des

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Wang, Ruirui, Min Wang, Kehao Chen, Shiyu Wang, Luis Alejandro Jose Mur, and Shiwei Guo. "Exploring the Roles of Aquaporins in Plant–Microbe Interactions." Cells 7, no. 12 (2018): 267. http://dx.doi.org/10.3390/cells7120267.

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Aquaporins (AQPs) are membrane channel proteins regulating the flux of water and other various small solutes across membranes. Significant progress has been made in understanding the roles of AQPs in plants’ physiological processes, and now their activities in various plant–microbe interactions are receiving more attention. This review summarizes the various roles of different AQPs during interactions with microbes which have positive and negative consequences on the host plants. In positive plant–microbe interactions involving rhizobia, arbuscular mycorrhizae (AM), and plant growth-promoting

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Kim, H., H. S. Kim, I. T. Yeom, and Y. B. Chae. "Application of membrane bioreactor system with full scale plant on livestock wastewater." Water Science and Technology 51, no. 6-7 (2005): 465–71. http://dx.doi.org/10.2166/wst.2005.0669.

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A full-scale plant of an MBR system treating livestock wastewater has shown impressive results. The Cheorwon County Environmental Authorities adopted the MBR process with UF membrane for retrofitting the old plant, which removes organic matter, nitrogen and phosphorus at a high level. According to 6 months operation data, BOD and SS removal were about 99.9% and CODMn, TN and TP removal were 92.0%, 98.3% and 82.7%, respectively. It is considered that the temperature at the bioreactor has to be controlled to be below 40 °C so as to ensure sufficient nitrification. It appeared that the MBR system

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Peeters, J., N. Adams, Z. Long, P. Côté, and T. Kunetz. "Demonstration of innovative MABR low-energy nutrient removal technology at Chicago MWRD." Water Practice and Technology 12, no. 4 (2017): 927–36. http://dx.doi.org/10.2166/wpt.2017.096.

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Abstract An innovative MABR (membrane-aerated biofilm reactor) membrane technology was demonstrated at the O'Brien Water Reclamation Plant (OWRP) of the Metropolitan Water Reclamation District of Greater Chicago (Chicago MWRD). The demonstration unit was equipped with one full-scale membrane cassette. The technology was evaluated for its potential to improve performance for total suspended solids (TSS) and ammonia removal during stressed conditions (specifically cold temperature peak flow periods) and to meet future effluent phosphorous limits. Over a period of 9 months, the MABR oxygen transf

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ASLAM, Muhammad T., Imran KHAN, Muhammad U. CHATTHA, et al. "The critical role of nitrogen in plants facing the salinity stress: Review and future prospective." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 51, no. 3 (2023): 13347. http://dx.doi.org/10.15835/nbha51313347.

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Salinity stress is a serious abiotic stress that negatively affect the crop growth and development. Mineral nutrient supplementation is considered as an effective strategy to mitigate the adverse effects of salinity. Nitrogen (N) is an important nutrient needed for plants and its application also an effective strategy to mitigate adverse impacts of salinity. Salinity stress disturbs plant physiological, and biochemical functions, antioxidant activities, cellular membranes, antioxidant activities and nutrient uptake thereby cause significant reduction in plant growth and development. The applic

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Baumbauer, Carol L., Payton J. Goodrich, Margaret E. Payne, et al. "Printed Potentiometric Nitrate Sensors for Use in Soil." Sensors 22, no. 11 (2022): 4095. http://dx.doi.org/10.3390/s22114095.

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Plant-available nitrogen, often in the form of nitrate, is an essential nutrient for plant growth. However, excessive nitrate in the environment and watershed has harmful impacts on natural ecosystems and consequently human health. A distributed network of nitrate sensors could help to quantify and monitor nitrogen in agriculture and the environment. Here, we have developed fully printed potentiometric nitrate sensors and characterized their sensitivity and selectivity to nitrate. Each sensor comprises an ion-selective electrode and a reference electrode that are functionalized with polymeric

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Gavrin, Aleksandr, Patrick C. Loughlin, Ella Brear, et al. "Soybean Yellow Stripe-like 7 is a symbiosome membrane peptide transporter important for nitrogen fixation." Plant Physiology 186, no. 1 (2021): 581–98. http://dx.doi.org/10.1093/plphys/kiab044.

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Abstract Legumes form a symbiosis with rhizobia that convert atmospheric nitrogen (N2) to ammonia and provide it to the plant in return for a carbon and nutrient supply. Nodules, developed as part of the symbiosis, harbor rhizobia that are enclosed in a plant-derived symbiosome membrane (SM) to form an organelle-like structure called the symbiosome. In mature nodules exchanges between the symbionts occur across the SM. Here we characterize Yellow Stripe-like 7 (GmYSL7), a Yellow stripe-like family member localized on the SM in soybean (Glycine max) nodules. It is expressed specifically in infe

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Bilstad, T., M. Madland, E. Espedal, and P. H. Hanssen. "Membrane Separation of Raw and Anaerobically Digested Pig Manure." Water Science and Technology 25, no. 10 (1992): 19–26. http://dx.doi.org/10.2166/wst.1992.0234.

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Manure ought to be controlled and handled environmentally soundly. Volume reduction of surplus manure by reverse osmosis (RO) is a viable and economic option in certain areas where another alternative is to reduce the number of animals. This membrane separation project arose out of an urgent need to re-establish an ecological balance between farming and the natural environment without necessarily having to decrease the number of livestock. The suggested technical solutions should not significantly reduce the standard of living of the farmers. Dewatering of manure makes it easier to store and t

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Raven, John A. "Implications of inorganic carbon utilization: ecology, evolution, and geochemistry." Canadian Journal of Botany 69, no. 5 (1991): 908–24. http://dx.doi.org/10.1139/b91-118.

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CO2-concentrating mechanisms based on active inorganic C influx across a membrane (or membranes) are widespread in aquatic phototrophs. They are apparently absent from, or poorly developed in, taxa such as bryophytes and freshwater red algae, but are retained in some terrestrial phototrophs, i.e., some lichens and free-living algae and cyanobacteria related to the lichen photobionts. The natural occurrence of CO2-concentrating mechanisms is negatively correlated with CO2 enrichment of aquatic habitats from respiration of organic C produced elsewhere and, less clearly, with low temperatures dur

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Almomani, Fares, Asmaa Othman, Ajinkya Pal, Easa I. Al-Musleh, and Iftekhar A. Karimi. "Prospective of Upfront Nitrogen (N2) Removal in LNG Plants: Technical Communication." Energies 14, no. 12 (2021): 3616. http://dx.doi.org/10.3390/en14123616.

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Conventional natural gas (NG) liquefaction processes remove N2 near the tail of the plant, which limits production capacity and decreases energy efficiency and profit. Engineering calculations suggest that upfront N2 removal could have substantial economic benefits on large-scale liquefied natural gas (LNG) processes. This article provides an overview of the most promising technologies that can be employed for upfront N2 removal in the LNG process, focusing on the process selection and design considerations of all currently available upfront N2 removal technologies. The literature review revea

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Weaver, C. David, Burnette Crombie, Gary Stacey, and Daniel M. Roberts. "Calcium-Dependent Phosphorylation of Symbiosome Membrane Proteins from Nitrogen-Fixing Soybean Nodules." Plant Physiology 95, no. 1 (1991): 222–27. http://dx.doi.org/10.1104/pp.95.1.222.

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DONCHEVA, S., V. VASSILEVA, and G. IGNATOV. "Influence of nitrogen deficiency on photosynthesis and chloroplast ultrastructure of pepper plants (Research Note)." Agricultural and Food Science 10, no. 1 (2001): 59–64. http://dx.doi.org/10.23986/afsci.5680.

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Pepper plants (Capsicum annuum L. cv. Zlaten Medal) were grown on nutrient solution without nitrogen, and photosynthetic response of plants was examined by determination of leaf CO2 fixation and chlorophyll and carotenoid contents. The absence of nitrogen in the medium resulted in a decrease of the leaf area and of plant biomass accumulation, and in an increase of the root-shoot dry weight ratio. The photosynthetic activity and chlorophyll and carotenoid contents decreased significantly under nitrogen deprivation. Examination of nitrogen deficient leaves by transmission electron microscopy sho

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AjemaGebisa, Leta. "Associations of Arbuscular Mycorrhizal Fungi (AMF) for Enhancements in Soil Fertility and Promotion of Plant Growth: A Review." Advances in Bioscience and Bioengineering 12, no. 4 (2024): 72–80. http://dx.doi.org/10.11648/j.abb.20241204.11.

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Arbuscular Mycorrhizal Fungi are used for soil fertility enhancements and stimulating plant growth in which they association with other organisms like terrestrial plants. Mycorrhizas create an association between fungi and the roots of plants. Therefore, the review was made to point out important fungal species involved in fungal plant interaction and their major roles in agriculture as well as ecosystem. 80% of plants form associations with mycorrhizal fungi. The fungal are used to use their different organs like chain, arbuscular, vesicle, supportive cells and spore to interact with the othe

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Godifredo, Jesús, Laura Ruiz, Silvia Hernández, Joaquín Serralta, and Ramón Barat. "Recovering Nitrogen from Anaerobic Membrane Bioreactor Permeate Using a Natural Zeolite Ion Exchange Column." Water 16, no. 19 (2024): 2820. http://dx.doi.org/10.3390/w16192820.

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In the framework of a circular economy, wastewater treatment should be oriented toward processes that allow the recovery of the resources present in the wastewater while ensuring good effluent quality. Nitrogen recovery is usually carried out in streams concentrated in this nutrient because these high concentrations facilitate nitrogen valorization. On the other hand, the mainstream of a wastewater treatment plant (WWTP) has a high potential for nitrogen recovery, but it is not usually considered because it is hard to manage due to its low nitrogen concentration. To solve this problem and faci

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