Journal ArticleDOI
Catalytic hydrogenation of aqueous nitrate solutions in fixed-bed reactors
Albin Pintar,Jurka Batista +1 more
TLDR
In this paper, the authors investigated catalytic nitrate reduction in isothermal fixed-bed reactors at T ǫ=298 K and atmospheric pressure, and demonstrated that nitrates can be efficiently removed from the liquid-phase, and that the maximum contaminant level for ammonium ions in drinking water is not exceeded.About:
This article is published in Catalysis Today.The article was published on 1999-10-15. It has received 129 citations till now. The article focuses on the topics: Trickle-bed reactor & Reaction rate.read more
Citations
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Journal ArticleDOI
Heterogeneous water phase catalysis as an environmental application: a review.
Kari Pirkanniemi,Mika Sillanpää +1 more
TL;DR: This review of 120 references presents the wide scale of heterogeneous water phase applications studied mainly within past five years, both oxidation and hydrogenation processes are included as well as TiO2 assisted photocatalysis.
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Supported bimetallic palladium catalysts for water-phase nitrate reduction
Ulf Prüsse,Klaus-Dieter Vorlop +1 more
TL;DR: In this article, the nitrate removal activity and selectivity for various pH values, and for different bimetallic catalysts, as well as results described in literature were used to set up a mechanistic model for the reaction.
Journal ArticleDOI
State-of-the-art and perspectives of the catalytic and electrocatalytic reduction of aqueous nitrates
TL;DR: An overview of the current state-of-the-art of both catalytic reduction and electroreduction of nitrates is presented, highlighting their potential and their main drawbacks along with guidelines for future research as mentioned in this paper.
Journal ArticleDOI
Overview of in-situ applicable nitrate removal processes
TL;DR: In this article, the most proper process(s) by means of economic, technical and design prospects for in-situ application regarding sustainable development strategy in the developing, in particular, Mediterranean countries.
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Catalytic Reduction of Nitrate and Nitrite on Pt–Cu/Al2O3 Catalysts in Aqueous Solution: Role of the Interaction between Copper and Platinum in the Reaction
TL;DR: In this paper, the authors compared the activity and selectivity of copper and platinum monometallic catalysts compared to those of their bimetallic counterparts and found that copper has a negative influence on the selectivity toward nitrogen.
References
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Journal ArticleDOI
Nitrate Removal From Drinking Water—Review
Anoop Kapoor,T. Viraraghavan +1 more
TL;DR: In this paper, the authors reviewed the developments in the field of nitrate removal processes and concluded that ion exchange and biological denitrification are more acceptable for ground water than reverse osmosis.
Journal ArticleDOI
Trickle-bed reactors
TL;DR: Trickling filters have been used for removal of organic matter from wastewater streams by aerobic bacterial action as discussed by the authors, where biological growths are allowed to attach themselves to a bed of stone or other support over which the wastewater is allowed to trickle in contact with air.
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Development of catalysts for a selective nitrate and nitrite removal from drinking water
TL;DR: In this paper, a supported palladium catalyst was proposed to reduce nitrate and nitrite to nitrogen with a selectivity of 99.9% using hydrogen on noble metal catalysts.
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The determination of nitrate in soil solutions by ultraviolet spectrophotometry
TL;DR: In this article, ultraviolet spectrophotometric analysis has been applied to the determination of nitrate nitrogen over the 0·5 to 10 p.m. range in soil solutions and perfusates in the absence of organic matter.
Journal ArticleDOI
Kinetics of the catalytic liquid-phase hydrogenation of aqueous nitrate solutions
TL;DR: In this paper, an intrinsic rate expression for nitrate disappearance was proposed based on the conventional Langmuir-Hinshelwood kinetic approach, considering both equilibrium nitrate as well as dissociative hydrogen adsorption processes to different types of active sites, and assuming an irreversible bimolecular surface reaction between adsorbed reactant species to be the rate-controlling step.