Ion Exchange for the Removal of Nitrate Prom Well Water

Lauch, Richard P.; Guter, Gerald A.

doi:10.1002/j.1551-8833.1986.tb05748.x

Cited by 38 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Other reported ion-exchange operations are discussed and summarized in Table 1. Dore et al, 1986Guter, 1982Lauch and Guter, 1986Guter and Lauch, 1988Guter, 1990Philipot et al, 1988Richard, 1989Richard, 1989Andersen, 1980Richard, 1989 Initial research at the (Guter and Kartinen, 1989). The plants are designed to treat 43.8 Lis.…”

Section: Examples Of Ion-exchange Processesmentioning

confidence: 96%

“…This preference limits the effectiveness of ion exchange whenever the sulfate content of the water supply exceeds that of the nitrates (Andersen, 1980). Some researchers have reported the development of a series of nitrate-selective resins (Guter, 1982(Guter, , 1987Lauch and Guter, 1986;Klapwijk, 1987, 1988), but the stability and economy of these resins have not been confirmed in prolonged use. Nitrate-removal experiments at a California site (Lauch and Guter, 1986) indicated that a treatment cost (for nitrate removal only) of at least $0.18 per one thousand gallons of product water is to be expected (1985 dollars) when treating well waters with a nitrate-nitrogen concentration of less than 20 mg/L.…”

Section: Limitationsmentioning

confidence: 97%

“…Ion exchange offers great potential for application at small and medium-sized treatment plants (Dahab, 1987;Lauch and Guter, 1986;Montgomery, 1985). Application would be very similar to domestic (or commercial) ion-exchange softeners currently available in the market place.…”

Section: Limitationsmentioning

confidence: 99%

See 2 more Smart Citations

Nitrate Treatment Methods: An Overview

Dahab

1991

Nitrate Contamination

View full text Add to dashboard Cite

Conventional water-treatment methods such as lime and soda-ash softening, filtration, and cation-exchange softening have no measurable effects on reducing nitrate concentrations in water supplies. There are, however, several methods that can be used to reduce nitrate concentrations in potable water supplies with varying degrees of efficiency. These methods include chemical precipitation, distillation, reverse osmosis, electrodialysis, ion-exchange, and biodenitrification. This paper reviews the progress of nitrate treatment processes with particular emphasis on ion exchange and biodenitrification. These two methods have been used extensively in the United States and Europe.

show abstract

Section: Examples Of Ion-exchange Processesmentioning

confidence: 96%

Section: Limitationsmentioning

confidence: 97%

See 1 more Smart Citation

Nitrate Treatment Methods: An Overview

Dahab

1991

Nitrate Contamination

View full text Add to dashboard Cite

show abstract

“…Selection of appropriate nitrate adsorption material is very necessary for better result. Activated carbon is generally considered as one of the best adsorbent for the nitrate removal [21]. In the present work we have used bio chars of locally available leaves and peels and used them as bio adsorbent for nitrate removal from water.…”

Section: Introductionmentioning

confidence: 99%

Use of Different Bioadsorbents for the Nitrate Removal from Water

Singh¹

2018

IJRASET

View full text Add to dashboard Cite

Our life is very precious and water is one of the most important natural resource for the existence of our life. For the last two decades; there is an increased interest in the study of nitrate in the ground water .Earlier the nitrate concentration in the ground water was very low nearly 5ppm. However due to pollution the nitrate concentration in the water has increased considerably. In the environment, nitrogen is found in different forms like Nitrate (No3-), Nitrite (No2-), and Ammonia (NH3) and Nitrogen gas (N2). Nitrate pollution of water is mainly due to excessive use of fertilizers, human sewage and livestock manure. Nitrates presence in the potable water beyond permissible limits is the major issue today for the people living in the western Rajasthan. It is affecting their health badly. Infants, less than six months can be victim of nitrate poisoning "Methemoglobinemia".(blue baby syndrome), Beside this gastric cancer , hypothyroidism, ,hormonal imbalance disorder, birth malformations and growing hypertension in the human beings is also attributed to the increased concentration of nitrate in the water. Therefore our prime objective was to remove nitrate from the contaminated water by an affordable and easy method. In this paper we have used activated charcoals of dried and fresh biomass of different bio adsorbents to remove nitrate from contaminated water . With the increase in pH the % removal efficiency was found to first increase and then decrease for different bioadsorbents.. As bio adsorbents dose was increased from 0 .1 to 0 .5 gm, there was a general increase in the nitrate removal efficiency. There was an increase in the nitrate removal efficiency with the increase in the temperature. Normal contact time was 30 to 40 minutes for the maximum adsorption. The order for nitrate removal was Bael leaves >Mausambi Peel >Khejri leaves>orange peel>Lemon Peel>Ashok leaves. We used biochar of Bael leaves for further studies and it showed significant capacity for the nitrate removal . By kinetic study it was found to follow pseudo second first order kinetics and the analysis for isotherm equilibrium data using Freundlich, Langmuir and Tepkin equations by linear methods showed that it fitted well with all the three equations. Due to the high efficiency and economic consideration adsorbents technique is best among different methods and biochar of Bael leaf was found to be a great option for nitrate removal.

show abstract

“…More conventional routes have been direct disposal to the environment by drainage ditch, river or coastal discharge (dependent upon consent). Evaporation ponds have also been used [10], though this method relies on appropriate ambient temperatures and land availability. The use of brine evaporation ponds has been found to cause contamination of groundwater over a period of decades [9].…”

Section: Introductionmentioning

confidence: 99%