Results 141 to 150 of about 103,389 (181)
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International Journal of Coal Geology, 1996
Abstract Seven samples of peatified and coalified wood, varying in rank from peat to subbituminous coal, have been analyzed using a new technique: thermochemolysis with tetramethylammonium hydroxide (TMAH). The preserved lignin in the coal undergoes thermochemolysis reactions when subjected to treatment with TMAH at 300°C for 10 min, yielding a ...
P G Hatcher
exaly +2 more sources
Abstract Seven samples of peatified and coalified wood, varying in rank from peat to subbituminous coal, have been analyzed using a new technique: thermochemolysis with tetramethylammonium hydroxide (TMAH). The preserved lignin in the coal undergoes thermochemolysis reactions when subjected to treatment with TMAH at 300°C for 10 min, yielding a ...
P G Hatcher
exaly +2 more sources
Tetramethylammonium hydroxide (TMAH) thermochemolysis of 2-arylcoumaran lignin model compounds
Journal of Analytical and Applied Pyrolysis, 2009Abstract Phenolic 2-arylcoumarans 1 – 6 were used to examine the behaviors of β-5 subunits in lignin during tetramethylammonium hydroxide (TMAH) thermochemolysis. Products were monitored by gas chromatography/mass spectrometry. The process predominantly provided dimeric products with the opened hydrofuran ring. Substituent changes at the γ-position
Akiko Nakagawa-izumi +2 more
exaly +2 more sources
Organic Geochemistry, 1996
Tetramethylammonium hydroxide (TMAH) thermochemolysis has been applied to the diagenetically resistant aliphatic biopolymer cutan derived from the leaf cuticles of Agave americana. Data obtained from the cutan sample using this new analytical method are vastly different in comparison with conventional flash pyrolysis data of the same sample.
P G Hatcher, J W de Leeuw
exaly +2 more sources
Tetramethylammonium hydroxide (TMAH) thermochemolysis has been applied to the diagenetically resistant aliphatic biopolymer cutan derived from the leaf cuticles of Agave americana. Data obtained from the cutan sample using this new analytical method are vastly different in comparison with conventional flash pyrolysis data of the same sample.
P G Hatcher, J W de Leeuw
exaly +2 more sources
Efficient adsorptive removal of Tetramethylammonium hydroxide (TMAH) from water using graphene oxide
Separation and Purification Technology, 2014Abstract High concentrations of Tetramethylammonium hydroxide (TMAH) can be found in wastewater from Thin-Film Transistor Liquid Crystal Display and semiconductor manufacturing processes. To treat this corrosive and toxic pollutant, the current biological wastewater treatment processes are still not satisfactorily effective. Therefore, graphene oxide
Chungsying Lu, Kun-Yi Andrew Lin
exaly +2 more sources
Environmental Research
Tetramethylammonium hydroxide (TMAH), an extensively utilized photoresist developer, is frequently present in ammonium-rich wastewater from semiconductor manufacturing, and its substantial ecotoxicity should not be underestimated. This study systematically investigated the effects of TMAH on the anammox granular sludge (AnGS) system and elucidated its ...
Zehao Zhang
exaly +3 more sources
Tetramethylammonium hydroxide (TMAH), an extensively utilized photoresist developer, is frequently present in ammonium-rich wastewater from semiconductor manufacturing, and its substantial ecotoxicity should not be underestimated. This study systematically investigated the effects of TMAH on the anammox granular sludge (AnGS) system and elucidated its ...
Zehao Zhang
exaly +3 more sources
Chemosphere
Tetramethylammonium hydroxide (TMAH), which is a chemical used in the electronic industry, is classified as a hazardous material (HAZMAT class 8) that threatens aquatic ecosystems and human health. Consequently, numerous studies have attempted to remove TMAH using various treatment methods, including advanced oxidation processes such as ozone, UV, or ...
Jaewoo Lee, Hyun-Suk Oh
exaly +3 more sources
Tetramethylammonium hydroxide (TMAH), which is a chemical used in the electronic industry, is classified as a hazardous material (HAZMAT class 8) that threatens aquatic ecosystems and human health. Consequently, numerous studies have attempted to remove TMAH using various treatment methods, including advanced oxidation processes such as ozone, UV, or ...
Jaewoo Lee, Hyun-Suk Oh
exaly +3 more sources
Resources, Conservation and Recycling, 2023
Hong-Ying Hu, Yin-Hu Wu, Yu-Qing Xu
exaly +2 more sources
Hong-Ying Hu, Yin-Hu Wu, Yu-Qing Xu
exaly +2 more sources
Chemosphere, 2020
Tetramethylammonium hydroxide (TMAH) was often used as developer in the high-tech industries. Information regarding biological treatment of high TMAH-containing wastewater is limited. This study investigated aerobic degradation of high TMAH, its impacts on nitrification, and microbial community in a sequencing batch reactor (SBR).
Yi-Ju, Wu +3 more
openaire +2 more sources
Tetramethylammonium hydroxide (TMAH) was often used as developer in the high-tech industries. Information regarding biological treatment of high TMAH-containing wastewater is limited. This study investigated aerobic degradation of high TMAH, its impacts on nitrification, and microbial community in a sequencing batch reactor (SBR).
Yi-Ju, Wu +3 more
openaire +2 more sources
Soil Science Society of America Journal, 2000
Tetramethylammonium hydroxide (TMAH) thermochemolysis–gas chromatography/mass spectrometry (GC/MS) was employed to study the chemical structure of soil organic matter sampled from a soil plot in which corn ( Zea mays L.) was farmed continuously for 15 yr.
Benny Chefetz +3 more
openaire +1 more source
Tetramethylammonium hydroxide (TMAH) thermochemolysis–gas chromatography/mass spectrometry (GC/MS) was employed to study the chemical structure of soil organic matter sampled from a soil plot in which corn ( Zea mays L.) was farmed continuously for 15 yr.
Benny Chefetz +3 more
openaire +1 more source
Journal of Environmental Science and Health, Part A, 2017
Tetramethylammonium hydroxide (TMAH) is widely used in high-tech industries as a developing agent. Ultraviolet (UV) light-activated persulfate (PS, S2O82-) can be used to generate strongly oxidative sulfate radicals, and it also exhibits the potential to treat TMAH-containing wastewater.
Jingting, Huang +2 more
openaire +2 more sources
Tetramethylammonium hydroxide (TMAH) is widely used in high-tech industries as a developing agent. Ultraviolet (UV) light-activated persulfate (PS, S2O82-) can be used to generate strongly oxidative sulfate radicals, and it also exhibits the potential to treat TMAH-containing wastewater.
Jingting, Huang +2 more
openaire +2 more sources