scholarly journals Tungsten carbide nanoparticles in simulated surface water with natural organic matter: dissolution, agglomeration, sedimentation and interaction with Daphnia magna

2017 ◽  
Vol 4 (4) ◽  
pp. 886-894 ◽  
Author(s):  
Jonas Hedberg ◽  
Mikael T. Ekvall ◽  
Lars-Anders Hansson ◽  
Tommy Cedervall ◽  
Inger Odnevall Wallinder
Keyword(s):  
Organic Matter ◽  
Surface Water ◽  
Acute Toxicity ◽  
Tungsten Carbide ◽  
Daphnia Magna ◽  
Natural Organic Matter ◽  
Simulated Surface

Nano-sized tungsten carbide shows no acute toxicity for Daphnia magna and agglomeration and sedimentation due to the lack of interaction with NOM.

Evaluation of the acute toxicity on Daphnia magna throughout the catalytic wet peroxide oxidation of dissolved natural organic matter

2020 ◽  
Vol 198 ◽  
pp. 272-283
Author(s):  
Camilo L. Guerrero-Romero ◽  
Dolly Revelo ◽  
Alejandra Caicedo ◽  
Marcela Botina ◽  
Ana M. García-Mora ◽  
...  
Keyword(s):  
Organic Matter ◽  
Acute Toxicity ◽  
Daphnia Magna ◽  
Natural Organic Matter ◽  
Peroxide Oxidation ◽  
Wet Peroxide Oxidation ◽  
Catalytic Wet Peroxide Oxidation

Application of composite flocculants for removing organic matter and mitigating ultrafiltration membrane fouling in surface water treatment: the role of composite ratio

2019 ◽  
Vol 5 (12) ◽  
pp. 2242-2250
Author(s):  
Xue Shen ◽  
Baoyu Gao ◽  
Kangying Guo ◽  
Qinyan Yue
Keyword(s):  
Organic Matter ◽  
Water Treatment ◽  
Surface Water ◽  
Membrane Permeability ◽  
Natural Organic Matter ◽  
Membrane Fouling ◽  
Ultrafiltration Membrane ◽  
Surface Water Treatment ◽  
Ultrafiltration Membrane Fouling

Coagulation prior to the ultrafiltration (UF) process was implemented to improve natural organic matter (NOM) removal and membrane permeability.

scholarly journals Impacts of Natural Organic Matter Adhesion on Irreversible Membrane Fouling during Surface Water Treatment Using Ultrafiltration

Membranes ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 238
Author(s):  
Fangshu Qu ◽  
Zhimeng Yang ◽  
Shanshan Gao ◽  
Huarong Yu ◽  
Junguo He ◽  
...  
Keyword(s):  
Organic Matter ◽  
Surface Water ◽  
Natural Organic Matter ◽  
Membrane Fouling ◽  
Adhesion Forces ◽  
Cake Filtration ◽  
Force Microscopy ◽  
Surface Water Treatment ◽  
Atomic Force ◽  
Colloidal Probes

To understand impacts of organic adhesion on membrane fouling, ultrafiltration (UF) membrane fouling by dissolved natural organic matter (NOM) was investigated in the presence of background cations (Na+ and Ca2+) at typical concentrations in surface water. Moreover, NOM adhesion on the UF membrane was investigated using atomic force microscopy (AFM) with colloidal probes and a quartz crystal microbalance with dissipation monitoring (QCM-D). The results indicated that the adhesion forces at the NOM-membrane interface increased in the presence of background cations, particularly Ca2+, and that the amount of adhered NOM increased due to reduced electrostatic repulsion. However, the membrane permeability was almost not affected by background cations in the pore blocking-dominated phase but was aggravated to some extent in the cake filtration-governed phase. More importantly, the irreversible NOM fouling was not correlated with the amount of adhered NOM. The assumption for membrane autopsies is doubtful that retained or adsorbed organic materials are necessarily a primary cause of membrane fouling, particularly the irreversible fouling.

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

A comparison of surface water natural organic matter in raw filtered water samples, XAD, and reverse osmosis isolates

2002 ◽  
Vol 36 (9) ◽  
pp. 2357-2371 ◽  
Author(s):  
Patricia A. Maurice ◽  
Michael J. Pullin ◽  
Stephen E. Cabaniss ◽  
Qunhui Zhou ◽  
Ksenija Namjesnik-Dejanovic ◽  
...  
Keyword(s):  
Organic Matter ◽  
Surface Water ◽  
Reverse Osmosis ◽  
Natural Organic Matter ◽  
Water Samples
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