New Insights into Trihalomethane and Haloacetic Acid Formation Potentials: Correlation with the Molecular Composition of Natural Organic Matter in Source Water

2017 ◽  
Vol 51 (4) ◽  
pp. 2015-2021 ◽  
Author(s):  
Xin Wang ◽  
Haifeng Zhang ◽  
Yahe Zhang ◽  
Quan Shi ◽  
Juan Wang ◽  
...  
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Molecular Composition ◽  
Acid Formation ◽  
Source Water ◽  
Haloacetic Acid

TiO2Photocatalysis of Natural Organic Matter in Surface Water: Impact on Trihalomethane and Haloacetic Acid Formation Potential

2008 ◽  
Vol 42 (16) ◽  
pp. 6218-6223 ◽  
Author(s):  
Sanly Liu ◽  
May Lim ◽  
Rolando Fabris ◽  
Christopher Chow ◽  
Mary Drikas ◽  
...  
Keyword(s):  
Organic Matter ◽  
Surface Water ◽  
Natural Organic Matter ◽  
Acid Formation ◽  
Water Impact ◽  
Haloacetic Acid ◽  
Formation Potential

Role of tertiary amines in enhancing trihalomethane and haloacetic acid formation during chlorination of aromatic compounds and a natural organic matter extract

2018 ◽  
Vol 4 (5) ◽  
pp. 663-679 ◽  
Author(s):  
Kun Huang ◽  
Amisha D. Shah
Keyword(s):  
Organic Matter ◽  
Organic Compound ◽  
Natural Organic Matter ◽  
Aromatic Compounds ◽  
Acid Formation ◽  
Tertiary Amines ◽  
Haloacetic Acid ◽  
Anthropogenic Inputs

Tertiary amines are prevalent in waters due to anthropogenic inputs and are known to enhance organic compound degradation while increasing disinfection by-product (DBP) formation, via the strong chlorinating agent, R3N–Cl+.

scholarly journals Molecular characterization of an end-residue of humeomics applied to a soil humic acid

RSC Advances ◽  
2014 ◽  
Vol 4 (45) ◽  
pp. 23658-23665 ◽  
Author(s):  
A. Nebbioso ◽  
A. Piccolo ◽  
M. Lamshöft ◽  
M. Spiteller
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Molecular Characterization ◽  
Natural Organic Matter ◽  
Molecular Composition ◽  
Chemical Fractionation ◽  
Soil Humic Acid

Humeomics encompasses step-wise chemical fractionation and instrumental determination to fully characterize the heterogeneous molecular composition of natural organic matter.

scholarly journals Degradation and transformation of natural organic matter accountable for disinfection byproduct formations by UV photolysis and UV/chlor(am)ine

2018 ◽  
Vol 79 (5) ◽  
pp. 929-937 ◽  
Author(s):  
Chanathip Hirun-Utok ◽  
Songkeart Phattarapattamawong
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Low Pressure ◽  
Haloacetic Acid ◽  
Uv Photolysis ◽  
Disinfection Byproduct ◽  
Proportional Relationship ◽  
Vacuum Uv ◽  
Potential Use

Abstract This research aimed to investigate the degradation of natural organic matter responsible for the formation of trihalomethane (THM), haloacetic acid (HAA) and haloacetonitrile (HAN) during ultraviolet (UV) photolysis and a co-exposure of UV with chlorine (UV/chlorine) and chloramine (UV/chloramine). Low pressure UV (LPUV) and vacuum UV (VUV) lamps were used for photolysis. VUV and LPUV irradiation changed aromatic/unsaturated structures to aliphatic ones, resulting in decreased THM and HAN formation. Following irradiation for 60 min, LPUV decreased THM and HAN by 16% ± 2% and 20% ± 6%, respectively. VUV decreased THM and HAN formation by 23% ± 3% and 20% ± 8%, respectively. HAA formation increased following photolysis. UV/chlorine treatment decreased THM, HAA and HAN. Higher chlorine doses had an inversely proportional relationship with THM and HAN formation. A chlorine dose of 4 mg·L−1 led to the greatest reductions, corresponding to 42% ± 2%, 10% ± 10% and 18% ± 6% for THM, HAA and HAN, respectively. UV/chloramine decreased the formation of THM more than UV/chlorine. With a chloramine dose of 4 mg·L−1, THM, HAA and HAN formation decreased by 74% ± 10%, 10% ± 10% and 11% ± 10%, respectively. This study showed the potential use of UV/chlor(am)ine for controlling the formation of THM, HAA and HAN.

Pre-ozonation of source water: Assessment of efficacy against Giardia duodenalis cysts and effects on natural organic matter

Chemosphere ◽  
2019 ◽  
Vol 214 ◽  
pp. 764-770 ◽  
Author(s):  
Liane Yuri Kondo Nakada ◽  
Regina Maura Bueno Franco ◽  
Vagner Ricardo da Silva Fiuza ◽  
Luciana Urbano dos Santos ◽  
Nilson Branco ◽  
...  
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Giardia Duodenalis ◽  
Source Water ◽  
Water Assessment

Removal of natural organic matter from source water: Review on coagulants, dual coagulation, alternative coagulants, and mechanisms

2020 ◽  
pp. 101820
Author(s):  
H.N.P Dayarathne ◽  
Michael J. Angove ◽  
Rupak Aryal ◽  
Hossam Abuel-Naga ◽  
Bandita Mainali
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Source Water

Removal of Dissolved Natural Organic Matter from Source Water with Alum Coagulation

2002 ◽  
Vol 23 (12) ◽  
pp. 1415-1423 ◽  
Author(s):  
G.-S. Wang ◽  
S.-F. Kang ◽  
H.-J. Yang ◽  
S.-Y. Pai ◽  
H.-W. Chen
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Source Water ◽  
Alum Coagulation

Comparison of AOPs for the removal of natural organic matter: performance and economic assessment

2004 ◽  
Vol 49 (4) ◽  
pp. 267-272 ◽  
Author(s):  
C.A. Murray ◽  
S.A. Parsons
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Advanced Oxidation Processes ◽  
Economic Assessment ◽  
Source Water ◽  
Control Methods ◽  
Water Quality Standards ◽  
Optimum Conditions ◽  
Organic Precursor ◽  
By Products

Control of disinfection by-products during water treatment is primarily achieved by reducing the levels of organic precursor species prior to chlorination. Many waters contain natural organic matter at levels up to 15 mg L-1; therefore it is necessary to have a range of control methods to support conventional coagulation. Advanced oxidation processes are such processes and in this paper the Fenton and photo-Fenton processes along with photocatalysis are assessed for their NOM removal potential. The performance of each process is shown to be dependent on pH and chemical dose as well as the initial NOM concentration. Under optimum conditions the processes achieved greater than 90% removal of DOC and UV254 absorbance. This removal led to the THMFP of the source water being reduced from 140 to below 10 mg L-1, well below UK and US standards. An economic assessment of the processes revealed that currently such processes are not economic. With advances in technology and tightening of water quality standards these processes should become economically feasible options.

Sign in / Sign up

Export Citation Format

Share Document