The Removal of Organic Halide Precursors by Preozonation and Alum Coagulation

Outflows of organic halide precursors (OXPs) from forest regions were studied in relation to water quality monitoring in the Yodo River basin. Firstly, the contribution of outflows from forest regions relative to the total was roughly estimated. Then equations for flows of these substances were formulated, divided into four different subflow categories: precipitation; throughfall; surface soil layer; and, deep soil layer. Finally, annual outflow loads were calculated for a test forest area.

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Light Emitting Metal‐Organic Halide 1D and 2D Structures: Near‐unity Quantum Efficiency, Low‐loss Optical Waveguide and Highly Polarized Emission

Angewandte Chemie ◽

10.1002/ange.202017274 ◽

2021 ◽

Author(s):

Narayan Pradhan ◽

Feng Liu ◽

Tongjin Zhang ◽

Debayan Mondal ◽

Shiyong Teng ◽

...

Keyword(s):

Optical Waveguide ◽

Quantum Efficiency ◽

Low Loss ◽

Organic Halide ◽

Light Emitting ◽

Polarized Emission ◽

Metal Organic

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Variation of organic halide formation potential of dyestuffs during ozonation and correlation with color

Ozone Science and Engineering ◽

10.1080/01919512.1999.10382887 ◽

1999 ◽

Vol 21 (5) ◽

pp. 487-500 ◽

Cited By ~ 2

Author(s):

Nobuyuki Takahashi ◽

Toshihiro Nakai ◽

Yoshio Satoh

Keyword(s):

Organic Halide ◽

Formation Potential

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Flexible Light-responsive Self-healing Polymeric Composite Film Based on Two-dimensional MoS2 - Organic Halide Perovskite Longitudinal Heterostructure

Chemical Engineering Journal ◽

10.1016/j.cej.2021.131450 ◽

2021 ◽

pp. 131450

Author(s):

Ling Bai ◽

Yong Lin Lei ◽

Hao Huang ◽

Yao Liang ◽

Han Yang

Keyword(s):

Composite Film ◽

Polymeric Composite ◽

Self Healing ◽

Two Dimensional ◽

Organic Halide ◽

Halide Perovskite

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Using HPSEC to identify NOM fraction removal and the correlation with disinfection by-product precursors

Water Science & Technology Water Supply ◽

10.2166/ws.2015.139 ◽

2015 ◽

Vol 16 (2) ◽

pp. 305-313 ◽

Cited By ~ 4

Author(s):

Euis Nurul Hidayah ◽

Yung-Chen Chou ◽

Hsuan-Hsien Yeh

Keyword(s):

Humic Substances ◽

Natural Organic Matter ◽

High Performance ◽

Haloacetic Acids ◽

Size Exclusion ◽

Formation Potential ◽

Trihalomethane Formation Potential ◽

Exclusion Chromatography ◽

Alum Coagulation ◽

Aliphatic Biopolymer

In this study high performance size exclusion chromatography (HPSEC) was used to compare an ultrafiltration (UF) membrane and alum coagulation for their capacity to remove different fractions of natural organic matter (NOM) from water. At the same time, the removal of disinfection by-product (DBP) precursors, as measured by trihalomethane formation potential (THMFP) and haloacetic acid formation potential (HAAFP), was also detected. The results show that the UF membrane mainly removed the aliphatic biopolymer fraction, while alum coagulation mainly removed the humic substances fraction. The results of DBP precursor analysis show that more THMFP was removed by the UF membrane than HAAFP, while the reverse was true for alum coagulation. It is conjectured that the aliphatic biopolymer fraction is the major precursor for trihalomethanes (THMs), while the humic substances fraction is the major precursor for haloacetic acids (HAAs).

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