Formation of disinfection by-products in the chlorination of ammonia-containing effluents: Significance of Cl2/N ratios and the DOM fractions

Zhang, Hua; Liu, Huijuan; Zhao, Xu; Qu, Jiuhui; Fan, Maohong

doi:10.1016/j.jhazmat.2011.03.098

Cited by 32 publications

(14 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A previous study reported that organic acid fraction isolated from wastewater, containing C=C and C=O structures, were the dominant precursors of THMs and HAAs during chlorination [41,42]. Additionally, FA and IA (two unsaturated dicarboxylic acids) also presented higher formation yields of DCAA (0.66% and 0.88% respectively) than TCM (0.54% and 0.80%) at 72 h, which is in agreement with chloramination of authentic drinking water samples, where DCAA concentrations exceeded those of TCM [7,43].…”

Section: C-dbp Formationmentioning

confidence: 99%

The formation of haloacetamides and other disinfection by-products from non-nitrogenous low-molecular weight organic acids during chloramination

Chu

Bond

et al. 2016

Chemical Engineering Journal

View full text Add to dashboard Cite

Low-molecular weight organic acids (LMWOAs) are widespread in nature, and many are recalcitrant during conventional drinking water treatment, due to their LMW and hydrophilic character. This study assessed the formation of a range of disinfection by-products (DBPs) from the chloramination of seven non-nitrogenous LMWOA precursors, with an emphasis on the contribution of N-chloramine incorporation to haloacetamide (HAcAm) formation. The other DBPs comprised chlorinated halomethanes, haloacetonitriles and haloacetic acids. Citric acid generated higher yields of trichloromethane and two chloroacetic acids than the other LMWOAs. Further, the unsaturated acids (fumaric acid and itaconic acid) formed more chloroacetic acids than saturated acids (oxalic acid, succinic acid, adipic acid). Importantly, non-nitrogenous LMWOAs formed three nitrogenous DBPs (dichloroacetamide, trichloroacetamide, and small amounts of dichloroacetonitrile) during chloramination, firstly indicating the monochloramine can supply the nitrogen in nitrogenous DBPs, and the formation of haloacetamides at least in part is independent of the hydrolysis of haloacetonitriles. To the authors' knowledge, this is the first time formation of halogenated nitrogenous DBPs (N-DBPs) has been reported from chloramination of non-nitrogenous LMWOA precursors. This indicates that concentrations of dissolved organic nitrogen compounds in drinking water are not a reliable surrogate for formation of N-DBPs during chloramination. Bromine incorporation factor increased with increasing bromide during chloramination of citric acid, and bromine was easier to incorporate into di-HAcAms than mono-and tri-HAcAms during chloramination.

show abstract

Section: C-dbp Formationmentioning

confidence: 99%

The formation of haloacetamides and other disinfection by-products from non-nitrogenous low-molecular weight organic acids during chloramination

Chu

Bond

et al. 2016

Chemical Engineering Journal

View full text Add to dashboard Cite

show abstract

“…Frequent nonhalogenated DBPs comprise aldehydes, ketones, organic acids, ammonia, and hydrogen peroxide (Weiner, 2012;Zhang et al, 2011).…”

Section: Dbps and Disinfection Residualsmentioning

confidence: 99%

Disinfection and DBPs removal in drinking water treatment: A perspective for a green technology

Ghernaout

2018

Int. j. adv. appl. sci.

View full text Add to dashboard Cite

The generation, monitoring, and health impacts of disinfection by-products (DBPs) in potable water are problems of worldwide worry. Several nations, besides the World Health Organization, possess regulations and/or guidelines on bearable levels of DBPs in water. Since drinking water is frequently remediated using a chemical killing agent, DBPs are pollutants to which several humans are unprotected. On account of the health impacts linked to subjection to chlorinated water and/or some DBPs, the water manufacturing has performed great endeavors to equilibrate killing pathogens and DBP monitoring. Large survey has been realized on rising DBPs of health and regulatory worry. In spite of the fact that the attention on DBPs was previously on chlorine-and bromine-containing carbonaceous DBPs, appearing DBPs comprise iodine-containing species, also halogenated and non-halogenated nitrogenous DBPs. In addition, latest toxicity experimentation has proposed that certain of the more recent PBPs are of more elevated toxicity than some of the regulated chemical products. Therefore, survey has been realized to better comprehend how to costeffectively monitor a large interval of regulated and appearing DBPs. This comprises the usage of advanced remediation and killing pathogens methodologies. This paper shows certain of the newest research works at comprehending these significant DBP-related problems. Disinfection is killing microorganisms present in water; but, it is as well killing human beings drinking water by poisonous DBPs. Using chemicals for water treatment is finally a lost cause.

show abstract

“…Many water bodies have become polluted due to rapid economic and social development (Qu and Fan, 2010;Zhang et al, 2011;Liu et al, 2012;Ma et al, 2009). River water quality has been substantially affected by industrial, agricultural and municipal waste water.…”

Section: Introductionmentioning

confidence: 99%

Forecasting Dissolved Oxygen and Biochemical Oxygen Demand in a River With Numerical Solution of One-Dimensional Bod-Do Model

Sh¹

2017

Appl Ecol Env Res

View full text Add to dashboard Cite

Abstract.As a main measure of water quality, the concentration of DO always gets much attention. The chemical reactions in water bodies are mainly related to DO, so the concentration of DO has much relationship with the water quality. Biochemical oxygen demand and dissolved oxygen (BOD-DO) model is used to show the relationship of the concentration of BOD or DO with the physical characteristic of the river. For this model, it is difficult to determine the analytical solution, so numerical solution of the model is obtained with Chebyshev orthogonal polynomial. With this method, the model is rewritten with differential form, and then the four order differential of the oxygen deficit was expressed with the Chebyshev orthogonal polynomial, which had coefficients. Lastly, a simulation test was conducted to verify the rationality of the model. The actual BOD and oxygen deficit values are calculated using the original model. With the actual values and formulas, the coefficients could be solved and the predicted values calculated. The forecasting values of concentration of BOD and DO are compared with the actual values. Five statistical measures were used to evaluate the predicted results.

show abstract

Formation of disinfection by-products in the chlorination of ammonia-containing effluents: Significance of Cl2/N ratios and the DOM fractions

Cited by 32 publications

References 30 publications

The formation of haloacetamides and other disinfection by-products from non-nitrogenous low-molecular weight organic acids during chloramination

The formation of haloacetamides and other disinfection by-products from non-nitrogenous low-molecular weight organic acids during chloramination

Disinfection and DBPs removal in drinking water treatment: A perspective for a green technology

Forecasting Dissolved Oxygen and Biochemical Oxygen Demand in a River With Numerical Solution of One-Dimensional Bod-Do Model

Contact Info

Product

Resources

About