Addition Of Nitrate Research Articles

Selection and classification of various additives for monolithic concrete depending on the working conditions

The article presents the results of research on the choice of chemical additives for monolithic concrete depending on their types, main properties and applications. The working conditions are analyzed under which various monolithic concrete or monolithic reinforced concrete objects are constructed. The influence of additives on the properties of concrete and its performance characteristics is considered. The recommended calculation of the strength of concrete with additives is presented. It is shown that in the case of additives, the strength calculation should be performed using refined coefficients, mainly for the water-cement ratio. The calculation of the dosage of the additive in concrete, depending on the volume of the prepared mixture, is given. The results of an experiment with the addition of calcium nitrate to the concrete structure are presented, which confirmed an increase in the strength of the product by 20% compared to normal hardening conditions. An approximate method of selecting the most rational additives for concrete, depending on the working conditions, is given. The basis for classification of recommended additives is defined in order to ensure the required properties of concrete, taking into account the conditions of production and operation of objects using elements made of monolithic concrete.

Herpes Simplex Virus 1 ICP34.5 Alters Mitochondrial Dynamics in Neurons.

Expression of viral genes and activation of innate antiviral responses during infection result in an increase in reactive oxygen species (ROS) and toxic by-products of energy metabolism which can lead to cell death. The mitochondrion and its associated proteins are crucial regulators of these responses and related pathways such as autophagy and apoptosis. Through a mass spectrometry approach, we have shown that the herpes simplex virus 1 (HSV-1) neurovirulence- and autophagy-modulating protein ICP34.5 interacts with numerous mitochondrion-associated factors. Specifically, we showed that amino acids 68 to 87 of ICP34.5, the domain that binds beclin1 and controls neurovirulence, are necessary for interactions with PGAM5, KEAP1, and other regulators of the antioxidant response, mitochondrial trafficking, and programmed cell death. We further show that while this domain interacts with multiple cellular stress response factors, it does not alter apoptosis or antioxidant gene expression. That said, the attenuated replication of a recombinant virus lacking residues 68 to 87 (termed Δ68-87) in primary human fibroblasts was restored by addition of ferric nitrate. Furthermore, in primary mouse neurons, the perinuclear localization of mitochondria that follows infection with HSV-1 was notably absent following Δ68-87 infection. Through this 20-amino-acid domain, ICP34.5 significantly reduces mitochondrial motility in axons of neurons. We propose the hypothesis that ICP34.5 promotes perinuclear mitochondrial localization by modulating transport of mitochondria through interaction with PGAM5. These data expand upon previous observations of altered mitochondrial dynamics following alphaherpesvirus infections and identify a key determinant of this activity during HSV-1 infections.IMPORTANCE Herpes simplex virus persists lifelong in neurons and can reactivate to cause recurrent lesions in mucosal tissues. A key determinant of virulence is the viral protein ICP34.5, of which residues 68 to 87 significantly contribute to neurovirulence through an unknown mechanism. Our report provides evidence that residues 68 to 87 of ICP34.5 are required for binding mitochondrion-associated factors. These interactions alter mitochondrial dynamics in neurons, thereby facilitating viral replication and pathogenesis.

Role of algal accumulations on the partitioning between N2 production and dissimilatory nitrate reduction to ammonium in eutrophic lakes

Cyanobacterial blooms change benthic nitrogen (N) cycling in eutrophic lake ecosystems by affecting organic carbon (OC) delivery and changing in nutrients availability. Denitrification, anaerobic ammonium oxidation (anammox), and dissimilatory nitrate reduction to ammonium (DNRA) are critical dissimilatory nitrate reduction pathways that determine N removal and N recycling in aquatic environments. A mechanistic understanding of the influence of algal accumulations on partitioning among these pathways is currently lacking. In the present study, a manipulative experiment in aquarium tanks was conducted to determine the response of dissimilatory nitrate reduction pathways to changes in algal biomass, and the interactive effects of OC and nitrate. Potential dinitrogen (N2) production and DNRA rates, and related functional gene abundances were determined during incubation of 3–4 weeks. The results indicated that high algal biomass promoted DNRA but not N2 production. The concentrations of dissolved organic carbon were the primary factor affecting DNRA rates. Low nitrate availability limited N2 production rates in treatments with algal pellets and without nitrate addition. Meanwhile, the AOAamoA gene abundance was significantly correlated with the nrfA and nirS gene abundances, suggesting that coupled nitrification-denitrification/DNRA was prevalent. Partitioning between N2 production and DNRA was positively correlated with the ratios of dissolved organic carbon to nitrate. Correspondingly, in Lake Taihu during summer to fall, the relatively high organic carbon/nitrate might favorably facilitate DNRA over denitrification, subsequently sustaining cyanobacterial blooms.

Facile preparation of N-doped porous carbon matrix with Mo2C / Ni supported for hydrogen evolution

Electrochemical hydrogen evolution has become a popular way to produce clean energy. Traditional catalysts (e.g. platinum (Pt)) are very expensive and rare; therefore, environmentally friendly and cost-effective catalysts are being widely developed. Here, molybdenum carbide and metallic nickel supported on a N-doped porous carbon matrix are prepared as an electrocatalyst through a one-step hydrothermal method with the addition of melamine, polyvinylpyrrolidone (PVP), pectin, ammonium molybdate and nickel nitrate, and the catalysts exhibit excellent catalytic performance for electrochemical hydrogen evolution. The catalysts created with a carbonization temperature of 1000 °C display a low onset overpotential of 60 mV in an acidic solution with a small Tafel slope of 64 mV dec−1 and low overpotentials of 170 mV and 220 mV in 0.5 M H2SO4 and 1.0 M KOH, respectively, at 10 mA cm−2. The obtained catalyst maintains remarkable stability after a 240 h durability test and 10000 cyclic voltammetry cycles. The obtained materials possess excellent catalytic performance for the HER due to the synergistic effect of nickel incorporation into molybdenum carbide and the benefit of the porous N-doped carbon matrix for electron and H∗ transport.

Deep oxidation of benzene over LaCoO3 catalysts synthesized via a salt-assisted sol-gel process

With the assistance of nitrate additives (KNO3, NaNO3, Ca(NO3)2 or Mg(NO3)2), perovskite LaCoO3, which has a 3D porous structure and relatively high surface area (around 20 m2/g) was successfully synthesized at 500 °C via a sol-gel process. The results of thermal gravimetric analysis indicated that nitrates (especially NaNO3 and KNO3) acted as combustion aids, which significantly lowered down the crystallization temperature of LaCoO3 by intensifying the decomposition of organic ingredients. Unlike other researches, the metal ions from the nitrate additives did not dope into the crystal lattice of perovskite and it was found that the remained nitrate additives would dramatically inhibit the LaCoO3 catalytic activity on benzene oxidation. However, after removal of these remained nitrate additives by rinsing with deionized water, LaCoO3 derived from our proposed salt-assisted sol-gel method exhibited an excellent catalytic activity.

Investigation of exhaust emissions of an isolated diesel engine blended with ethylhexyl nitrate using experimental and ANN approach.

Thermal barrier coating (TBC) implementations and oxygenated additives are remarkable issues that may decrease the exhaust emissions of engines. This study examines the effect of chromium oxide (Cr2O3) coating and the addition of ethylhexyl nitrate (EHN) on exhaust emissions of a diesel engine. In addition, an artificial neural network (ANN) model was designed which estimates exhaust emissions based on engine speed in order to reduce time, labor, and costs lost in experimental studies, and the performance of the ANN was evaluated. Piston crown and valves of engine were processed with Cr2O3. The E3, E6, and E9 blends were produced by blending 3%, 6%, and 9% (vol.) ratios of 2-ethylhexyl nitrate with diesel fuel. Engine speed was used as input parameter and carbon monoxide (CO), nitrogen oxide (NOX), hydrocarbon (HC), and smoke density were used as output parameters. To evaluate the performance of ANN, error rates, and regression (R) values were considered. Experimental results revealed that CO, HC, and smoke density decreased in the CE whereas NOX values increased compared with the UE. The addition of EHN reduced NOX emission and smoke density, whereas it increased CO and HC emissions. The result showed that ANN model can predict the exhaust emissions at a high accuracy rate. The lowest regression results were achieved as 0.98395, 0.99047, 0.99268, and 0.98383 for the CO, NOX, smoke density, and HC, respectively. Moreover, the average R values of NOX, HC, CO, and smoke density were obtained as 0.99767, 0.99131, 0.99396, and 0.99741. The maximum error rates of the estimated outcomes were obtained as 5.25% on average. Graphical abstract.

MXene/metal oxides-Ag ternary nanostructures for electromagnetic interference shielding

The development of smart, structured hybrid materials with superior electrical conductivity are vastly desired for the depletion of unwanted electromagnetic interference (EMI). Herein, novel multilayered two-dimensional MXene/Metal Oxides-Ag ternary hybrid nanostructures with various heterogeneous assemblies were constructed by self-reduction and oxidation of MXene (Nb2CTx and Ti3C2Tx) in the presence of metallic salt (AgNO3), and its EMI shielding performance in X- and Ku-band are demonstrated. The effect of different silver nitrate addition into MXene on their structural evaluation reveals that the successful formation of MXene/Metal Oxides-Ag (Nb2CTx/Nb2O5-Ag; Ti3C2Tx/TiO2-Ag) ternary hybrid nanostructures derived from MXene (Nb2CTx; Ti3C2Tx). Remarkably, the Nb2CTx/Nb2O5-Ag hybrid assembly attains reflection dominated shielding performance with a maximum total shielding effectiveness of 68.76 dB and 72.04 dB in the X- and Ku-band region respectively at a thickness of 1 mm compared to other nanostructures. The large enhancement in electromagnetic shielding capability of ternary nanostructure attributed to the strong electrical conductivity and increased interface polarization and multiple reflection loss between the ternary interfaces. The synergistic effect of metallic silver nanoparticles, semiconducting metal oxides and conducting stacked multilayer causes to conduction loss, polarization effect (dipole, and interfacial polarization), and multiple reflections of incoming radiation favor the complete dissipation of EM waves. Consequently, the demonstrated simple, cost-effective, and large scale production of highly conductive composites could pave for the potential prospect materials in advanced EM wave shielding applications.

A Meta-Analysis of the Effects of Organic and Inorganic Fertilizers on the Soil Microbial Community

In order to investigate the general tendency of soil microbial community responses to fertilizers, a meta-analysis approach was used to synthesise observations on the effects of inorganic and organic fertilizer addition (N: nitrogen; P: phosphorus; NP: nitrogen and phosphorus; PK: phosphorus and potassium; NPK: nitrogen, phosphorus and potassium; OF: organic fertilizer; OF+NPK: organic fertilizer plus NPK) on soil microbial communities. Among the various studies, PK, NPK, OF and OF+NPK addition increased total phospholipid fatty acid (PLFA) by 52.0%, 19.5%, 334.3% and 58.3%, respectively; while NP, OF and OF+NPK addition increased fungi by 5.6%, 21.0% and 8.2%, respectively. NP, NPK and OF addition increased bacteria by 6.4%, 9.8% and 13.3%, respectively; while NP and NPK addition increased actinomycetes by 7.0% and 14.8%, respectively. Addition of ammonium nitrate rather than urea decreased gram-negative bacteria (G–). N addition increased total PLFA、bacteria and actinomycetes in croplands, but decreased fungi and bacteria in forests, and the F/B ratio in grasslands. NPK addition increased total PLFA in forests but not in croplands. The N addition rate was positively correlated with the effects of N addition on gram-positive bacteria (G+) and G–. Therefore, different fertilizers appear to have different effects on the soil microbial community. Organic fertilizers can have a greater positive effect on the soil microbial community than inorganic fertilizers. The effects of fertilizers on the soil microbial community varied with ecosystem types. The effect of N addition on the soil microbial community was related to both the forms of nitrogen that were added and the nitrogen addition rate.

Mineralization of formic acid from catalytic nitrate reduction effluent by UV-based and electrochemical processes

Abstract In this work, UV-based and electrochemical processes were proposed for formic acid (FA) mineralization, from an effluent generated on the nitrate catalytic reduction reaction. The results show that although direct photolysis (DP) does not have the ability to mineralize FA, heterogeneous photocatalysis (HP), photo-assisted electrochemical oxidation (PEO) and electrochemical oxidation (EO) have. In fact, it has been shown that FA mineralization is governed by the electrochemical process. When nitrate was added in the FA solution, all process exhibited an increase in FA mineralization, mainly for DP. For UV-based process, this fact can be linked to the nitrate photolysis generating hydroxyl radicals ( H O • ). On the other hand, the mineralization increase observed on the EO process, is associated with the increase in charge transfer, considering that the generation of oxidants is a rate-limiting-step, showing pseudo-zero-order constants for DP and HP, and pseudo-first-order for PEO and EO. The best results of FA mineralization with the smallest energy consumption was obtained by the electrochemical process. Besides, EO was not negatively influenced by the addition of nitrate.

Combined Effect of some Nitrogen and Zinc Sources on some Quality Parameters of Spinach Grown on Salt Affected Soil التأثیر المشترک لبعض مصادر النیتروجین والزنک على بعض مقاییس الجودة للسبانخ النامی علی أرض متأثرة بالأملاح

Salinity is a major problem affecting vegetable production in Egypt. Thus, the purpose of this investigation was to evaluate the influence of foliar applications of different sources of zinc [(Z1): Zn-EDTA, (Z2): ZnSO4 and (Z3): without Zn (control)] with both (NH4)2 SO4 and Ca(NO3 )2 combined together with one level as 6 mixed ratios of Ca(NO3 )2 : (NH4)2 SO4 [N1100% Ca(NO3)2 : 0.0% (NH4)2 SO4, N2 75% Ca(NO3)2 : 25% (NH4)2 SO4, N3 50% Ca(NO3 )2 : 50% (NH4)2 SO4, N4 25% Ca(NO3 )2:75% (NH4)2 SO4, N5 0.0% Ca(NO3 )2 : 100% (NH4)2 SO4 and N6 control treatment (without nitrogen)] on some quality parameters and chemical composition of spinach plants grown on salt-affected soil during the winter season of 2018. The experiment was designed in a split-plot design with three replicates. As for most determined parameters at both growth stages (30 and 55 days sowing), the findings indicate that the highest values were recorded with N1 treatment and foliar application of Zn- EDTA (Z1),while the lowest values were recorded under a combination of N6 treatment (without N-fertilization) and Z3 treatment (untreated plants). It can be concluded that; foliar spraying with Zn-EDTA in combination with soil addition of calcium nitrate as a source of N-fertilization is considered the most suitable treatment for overcoming salinity stress in some Egyptian soils and releasing the highest safe yield of spinach plant.

Characterization of Nitrate-Dependent As(III)-Oxidizing Communities in Arsenic-Contaminated Soil and Investigation of Their Metabolic Potentials by the Combination of DNA-Stable Isotope Probing and Metagenomics.

Arsenite (As(III)) oxidation has important environmental implications by decreasing both the mobility and toxicity of As in the environment. Microbe-mediated nitrate-dependent As(III) oxidation (NDAO) may be an important process for As(III) oxidation in anoxic environments. Our current knowledge of nitrate-dependent As(III)-oxidizing bacteria (NDAB), however, is largely based on isolates, and thus, the diversity of NDAB may be underestimated. In this study, DNA-stable isotope probing (SIP) with 13C-labeled NaHCO3 as the sole carbon source, amplicon sequencing, and shotgun metagenomics were combined to identify NDAB and investigate their NDAO metabolism. As(III) oxidation was observed in the treatment amended with nitrate, while no obvious As(III) oxidation was observed without nitrate addition. The increase in the gene copies of aioA in the nitrate-amended treatment suggested that As(III) oxidation was mediated by microorganisms containing the aioA genes. Furthermore, diverse putative NDAB were identified in the As-contaminated soil cultures, such as Azoarcus, Rhodanobacter, Pseudomonas, and Burkholderiales-related bacteria. Metagenomic analysis further indicated that most of these putative NDAB contained genes for As(III) oxidation and nitrate reduction, confirming their roles in NDAO. The identification of novel putative NDAB expands current knowledge regarding the diversity of NDAB. The current study also suggests the proof of concept of using DNA-SIP to identify the slow-growing NDAB.

ГИДРОЛИЗ КОНЦЕНТРИРОВАННЫХ РАСТВОРОВ НИТРАТА КАРБАМИДА

Актуальность исследования обоснована целесообразностью утилизации нитрата карбамида, образующегося в разработанном ранее процессе карбамидной денитрации рафинатов азотнокислого аффинажа урана для предприятий фабрикации ядерного топлива. В данной работе рассматриваются результаты исследования процесса гидролиза нитрата карбамида в нитрат аммония, используемого в гидрометаллургии урана. Объекты: модельные растворы нитрата карбамида с концентрацией 100–500 г/л с добавлением различных реагентов: азотной кислоты, нитрата аммония. Методы: ИК-спектроскопия, рН-метрия, спектрофотометрия, газовая хроматография. Результаты. Изучен процесс гидролиза нитрата карбамида при атмосферном давлении, температурах 70–105 °С, концентрациях исходного раствора 100–500 г/л и с добавлением различных реагентов – азотной кислоты и нитрата аммония. Установлено, что повышение температуры способствует интенсификации процесса гидролиза; добавка азотной кислоты при концентрации 100 г/л замедляет процесс, а добавка нитрата аммония практически не влияет на процесс гидролиза нитрата карбамида. ИК-спектроскопические исследования позволяют сделать вывод о том, что нагревание растворов с исходными концентрациями 100 и 200 г/л при 90 °С в течение 20 часов с отведением выделяющихся газов приводит к полному гидролизу нитрата карбамида. Степень гидролиза нитрата карбамида и степень его конверсии в нитрат аммония совпадают при рН≤7. ИК-спектры совокупно с данными химического анализа подтверждают наличие в продуктах гидролиза нитрата карбамида гидрокарбоната и нитрата аммония. Промежуточных продуктов гидролиза не обнаружено.

Correction to: Combined use of calcium nitrate, zeolite, and anion exchange resin for controlling phosphorus and nitrogen release from sediment and for overcoming disadvantage of calcium nitrate addition technology.

The correct presentation fig. 8a is presented in this paper.

Opposite responses of global warming potential to ammonium and nitrate addition in an alpine steppe soil from Northern Tibet

Deposit of inorganic nitrogen (N) in different forms may divergently impact soil greenhouse gas (GHG) emissions and then aroused different feedback of global warming potential (GWP). Nevertheless, little information is available in alpine grassland ecosystems, it is far from elucidated. In this study, the effects of ammonium (NH4+-N) and nitrate (NO3−-N) addition on GHG emissions were evaluated by using laboratory incubation for an alpine steppe soil in northern Tibet. Six-level N gradient was set for the incubation: 14 (2T), 28 (4T), 56 (8T), 112 (16T), 224 (32T), 448 (64T) kg·ha−1·year−1. Our results showed that NH4+-N and NO3−-N addition significantly increased and decreased soil CO2, respectively. In general, NH4+-N addition had a stronger promotion to N2O emission and a stronger inhibition to CH4 uptake compared with NO3−-N addition at same level. Besides, GHG emissions increased or decreased linearly with inorganic N addition gradient (P < 0.05), and sharp N2O emissions were observed when NH4+-N input amounts more than 400 kg ha−1·year−1 (64T). On the whole, there was an opposite responses of global warming potential (GWP) to NH4+-N and NO3−-N addition, in which NH4+-N addition increased, but NO3−-N addition decreased. The GWP was mainly contributed by CO2 emission (>84%) in alpine steppe soil from Northern Tibet. The results suggested that NO3−-N input likely to be more eco-friendly than NH4+-N input in alpine steppe area, it may have implications in environmental policy related to the anthropogenic emissions of the two N forms.

Density and viscosity measurements of Ca(NO3)2-NaNO3-KNO3 ternary salt system

This study reports the density and viscosity measurement of ternary salts consisting of Ca(NO3)2, NaNO3 and KNO3. The addition of calcium nitrate has been reported to reduce the melting point of the salt mixture from 220 °C to around 120 °C, depending on the composition. The experiment is preceded by the process calibration of the viscosity and density measuring devices. The viscometer and the mass balance were calibrated against sunflower oil whose density and viscosity were known.

Synthesis of Hydroxyapatite Nanoparticles by Controlled Precipitation in the Presence of Sodium Dodecyl Sulfate

Hydroxyapatite nanoparticles (NPs) have been synthesized by controlled precipitation in the presence of a surfactant, sodium dodecyl sulfate. The sizes, shapes, and structures of the NPs depend on the sequence of mixing the reagents . When the addition of sodium phosphate to a surfactant solution is followed by the addition of calcium nitrate, rodlike hydroxyapatite NPs are formed, the length of which decreases with a rise in surfactant concentration. As the sodium dodecyl sulfate concentration increases, the ζ-potential of the NPs decreases to zero; then, its absolute value grows to –55 mV. This suggests that a surfactant bilayer is formed on the NP surface, with the bilayer shielding the surface of the growing crystals. The shielding leads to the formation of smaller NPs at high surfactant concentrations. When the addition of calcium nitrate to the surfactant solution is followed by the addition of sodium phosphate, the synthesis most likely occurs on the surface of micelles, which partially consist of calcium dodecyl sulfate. Therefore, the sulfate phase remains preserved in the synthesized particles, which is confirmed by X-ray diffraction analysis. At higher surfactant concentrations in the reaction medium, the presence of flexible cylindrical micelles is possible. The precipitation of hydroxyapatite on the surface of such micelles results in the formation of wavy threadlike particles.

Preparation and characterization of porous cellulose acetate with copper (II) nitrate additives for separator applications

We succeeded in generating nanopores in a cellulose acetate (CA) matrix under water pressure using copper nitrate (Cu(NO2)2·4H2O) as the additive. The nanopores were produced when the polymer matrix was subjected to isostatic water pressure adding copper(II) nitrate into the CA membrane. The polymer chains were weakened by the plasticization effect of copper(II) nitrate present in the CA membrane. We confirmed that the pore properties were readily changed by water pressure as external physical forces with additive content. The water flux of the CA composite (CA/Cu(NO2)2·4H2O) membrane improved with increasing water pressure and additive content. For the CA membrane without the additive, the water flux was not measured from 1 to 8 bar water pressure. In contrast, the water flow of the polymer film with the additive varied from 95.3 to 205.75 L/m2h, depending on the water pressure and additive content.

Contribution of co-denitrification to nitrous oxide production from subsurface wastewater infiltration system

Sewage treatment is one of the important sources of nitrous oxide (N2O) production, understanding its microbial process is fundamental for reducing N2O emissions. In this study, the stable isotope tracer method was used to reveal the contribution of co-denitrification to the release of N2O in addition to nitrification and denitrification in subsurface wastewater infiltration system (SWIS). The effects of nitrate addition modes were also explored. The results indicated that co-denitrification, significantly affected by dissolved oxygen, pH and potential denitrification activity, had to be taken into account in N2O formation. When the addition of nitrate nitrogen changed from one-time to intermittent, the contribution of co-denitrification increased from (1.87 ± 0.3) % to (34.2 ± 3.8) %. As a result, N2O emission and conversion rate increased from (5.17 ± 1.4) × 10−3 mg/m2·h to (6.77 ± 1.7) × 10−3 mg/m2·h and from (0.17 ± 0.02) % to (0.232 ± 0.01) %, respectively. The results also suggested that, given the increasing scale of SWIS applications, more attention should be paid to the nitrogen cycle in the system. To effectively mitigate the generation and conversion of N2O, measures to reduce nitrate accumulation need to be taken.

Dehydration of glycerol with silica–phosphate-supported copper catalyst

Silica–phosphate-supported copper catalyst was prepared by neutralization of sodium silicate with orthophosphoric acid followed by the addition of copper nitrate. The precipitated catalyst was dried and calcined at 550 °C for 4 h. The calcined powder was activated in hydrogen atmosphere at 400 °C for 4 h based on temperature-programmed reduction result. XRD analysis of the calcined catalyst showed the presence of CuO nanoparticles along with new phases CuHPO4·H2O and P4O7. But after reduction, metallic copper nanoparticles along with Cu4O3, Cu2O and χ-P2O5 phases were formed. The higher loading of copper (40 wt%) showed more Lewis acid sites than BrOnsted acid sites determined by pyridine–FTIR analysis. The high Lewis acid sites increased the acetol selectivity for 100% glycerol conversion at 220 °C for 3 h of reaction in atmospheric pressure. The yield of maximum distilled product (80%) was achieved for the highest copper loading catalyst. The high yield of the liquid product was due to the low tendency of copper atom towards the breakage of the C–C bond during dehydration reactions.

Combined use of calcium nitrate, zeolite, and anion exchange resin for controlling phosphorus and nitrogen release from sediment and for overcoming disadvantage of calcium nitrate addition technology.

Ca(NO3)2 addition has proved to have a high potential to immobilize internal phosphorus (P) in sediments; however, it cannot effectively stop the release of ammonium-nitrogen (NH4+-N) from sediments into overlying waters (OL-waters). Additionally, the addition of Ca(NO3)2 alone has high risk of nitrate-nitrogen (NO3--N) releasing into OL-waters. To overcome the shortcoming of the Ca(NO3)2 addition method, we reported an integrated method, i.e., a combined method based on Ca(NO3)2 injection, zeolite capping, and anion exchange resin (AERN)-contained floating system suspending (Ca(NO3)2/zeolite/AERN). The effectiveness and mechanism of the Ca(NO3)2/zeolite/AERN method for simultaneously controlling the release of soluble reactive P (SRP) and NH4+-N were investigated, and the NO3--N releasing risk of this method was evaluated. It was found that the joint use of Ca(NO3)2 injection, zeolite capping, and AERN-contained floating system suspending not only could effectively suppress the release of SRP and NH4+-N from sediments into OL-waters simultaneously, but also had much less risk of NO3--N releasing into OL-waters as compared to the single Ca(NO3)2 injection method and the combined Ca(NO3)2/zeolite method. The inhibition of the reductive dissolution of the P-bound Fe(III) oxides/hydroxides by the presence of nitrate and the adsorption of ammonium on the zeolite played very important roles in the interception of SRP and NH4+-N releasing into OL-waters by the Ca(NO3)2/zeolite/AERN method. After the sediment remediation using the Ca(NO3)2/zeolite/AERN approach, the increase in the content of residual P in the sediment layer of 0-50mm, the decrease of mobile P in the sediment layer of 0-10mm, and the increased NH4+-N adsorption capacity for the sediment layer of 0-10mm would be conductive to the interception of SRP and NH4+-N liberation in the long run. Results of this research suggest a promising application potential of the Ca(NO3)2/zeolite/AERN method in the simultaneous control of the release of SRP and NH4+-N from sediments.