scholarly journals Source identification and characteristics of dissolved organic matter and disinfection by-product formation potential using EEM-PARAFAC in the Manas River, China

RSC Advances ◽  
2021 ◽  
Vol 11 (46) ◽  
pp. 28476-28487
Author(s):  
Xinlin Wang ◽  
Yanbin Tong ◽  
Qigang Chang ◽  
Jianjiang Lu ◽  
Teng Ma ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Source Identification ◽  
Product Formation ◽  
Formation Potential ◽  
Humification Degree

Humic-like and protein-like components were identified by PARAFAC. THMs FP was significantly correlated with components C1 and C1 + C2. The source, types and humification degree of DOM affect the formation of DBPs.

scholarly journals Impact of UV irradiation on disinfection by-product formation and speciation from post-chlorination of dissolved organic matter

2021 ◽  
Author(s):  
Ziming Zhao ◽  
Madhumita B. Ray ◽  
Ted Mao ◽  
Wenjun Sun
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Uv Irradiation ◽  
Product Formation ◽  
Residual Chlorine ◽  
Maximum Increase ◽  
Formation Potential ◽  
Trihalomethane Formation Potential ◽  
Irradiation Dosage ◽  
Low Dosage

Abstract The objective of this study was to investigate the effects of combined low-pressure ultraviolet (UV)irradiation and chlorination on the formation of disinfection by-products (DBPs) from different dissolved organic matter (DOM) as DBP precursors. Commercially available humic acid (HA), extracellular organic matter (EOM) from green algae, cyanobacteria, and diatom, namely Scenedesmus quadricauda (SQ), Merismopedia sp. (Msp), and Phaedactylum tricornutum (PT), were used as the sources of DOM. The DBP formation increased with increasing total residual chlorine; EOM from PT presented the highest formation potential followed by HA, Msp, and SQ. The low dosage of 40 mJ/cm2 UV irradiation is insignificant to change the DBP formation from HA and SQ; however, it decreased the DBP formation from bromide-containing EOM of PT and promoted the DBP formation from EOM of Msp at various total residual chlorines. The DBP formation of each DOM correlated well with total residual chlorine. The maximum DBP formation potential (DBPFP) reduction of 42.25 and 13.75% for haloacetic acid formation potential (HAAFP) and trihalomethane formation potential (THMFP) was obtained at the UV irradiation dosage of 300 mJ/cm2 for EOM of PT. However, for the EOM derived from Msp, a maximum increase of 58.1 and 51.1% for HAAFP and THMFP was observed after UV-chlorination.

Dissolved organic matter in urban stormwater runoff at three typical regions in Beijing: chemical composition, structural characterization and source identification

RSC Advances ◽  
2015 ◽  
Vol 5 (90) ◽  
pp. 73490-73500 ◽  
Author(s):  
Chen Zhao ◽  
Chong-Chen Wang ◽  
Jun-Qi Li ◽  
Chao-Yang Wang ◽  
Peng Wang ◽  
...  
Keyword(s):  
Organic Matter ◽  
Chemical Composition ◽  
Dissolved Organic Matter ◽  
Structural Characterization ◽  
Source Identification ◽  
Stormwater Runoff ◽  
Urban Stormwater ◽  
Urban Stormwater Runoff

Chemical composition, structural characterization and source identification of DOM in urban stormwater runoff collected from three typical regions in Beijing were investigated.

Sign in / Sign up

Export Citation Format

Share Document