Reference

The effects of phenol and some alkyl phenolics on batch anaerobic methanogenesis

The effects of phenol and some alkyl phenolics on batch anaerobic methanogenesis. Fedorak, Phillip M.; Hrudey, Steve E. (Dep. Civ. Eng., Univ. Alberta, Edmonton, AB T6G 2G7, Can.). Water Res., 18(3), 361-7 (English) 1984. CODEN: WATRAG. ISSN: 0043-1354. DOCUMENT TYPE: Journal CA Section: 60 (Waste Treatment and Disposal) PhOH [108-95-2] and 7 alkylphenols (O- [95-48-7], m- [108-39-4], p-cresol (I) [106-44-5], 2,5,- [95-87-4], 2,6- [576-26-1], 3,4- [95-65-8] and 3,5-dimethylphenol [108-68-9]) were added at various concns. to aliquots of domestic anaerobic sludge in Hungate serum bottles and these were incubated at 37°. The concn. of CH4 [74-82-8] in the headspace gas was monitored to det. if the phenolics were fermented to CH4 or if they inhibited the anaerobic process. Only PhOH and I were fermented to CH4. at 500 mg/L (but not at 300 mg/L) and 2,5-, 3,4- and 3,5-dimethylphenol reduced the rate and the amt. of CH4 produced. 108-68-9 and 95-65-8 are cas registry numbers of chemicals which are used as reagents here. The cresols were inhibitory at 1000 mg/L but not at 400 mg/L. In cultures supplemented with OAc- and propionate (VOA), and in unsupplemented cultures, PhOH at concns. ￡500 mg/L was fermented to CH4. Between 800 and 1200 mg/L PhOH, CH4 prodn. was neither enhanced nor inhibited relative to control cultures contg. no PhOH. Inhibition of CH4 prodn. was evident when PhOH was present at 32000 mg/L. Thus, the methanogens are less susceptible to PhOH inhibition than are the PhOH degrading acid formers. In similar expts. with I, there was enhanced CH4 prodn. at concns. of ￡400 mg/L, no enhancement or inhibition at 600 mg/L, and inhibition when I was present at 31000 mg/L. .

Corrosion resistance of materials in media for the alkylation of phenols by olefins in the presence of heterogeneous catalysts

Corrosion resistance of materials in media for the alkylation of phenols by olefins in the presence of heterogeneous catalysts. Egidis, F. M.; Kurochkina, L. G.; Shlykova, G. A.; Listova, M. S. (USSR). Khim. Prom-st. (Moscow), (8), 509 (Russian) 1983. CODEN: KPRMAW. ISSN: 0023-110X. DOCUMENT TYPE: Journal CA Section: 55 (Ferrous Metals and Alloys) Section cross-reference(s): 51, 56 Corrosion resistance of welded economically-alloyed steels 14Kh17N2 [12793-24-7], 08Kh22N6T [12661-77-7], 08Kh21N6M2T [12661-69-7], and 10Kh17N13M2T [59093-32-2] and Ti VT1-1 [37333-93-0] in the reactors for phenol [108-95-2] and p-cresol [106-44-5] alkylation by styrene [100-42-5] was studied. The effect of KU-2 resin and synthetic aluminosilicate catalyst AShNTs-3 on the process was evaluated. 12661-77-7 and 12793-24-7 which are cas registry numbers of substances are two of reagents here. Corrosion of materials increased in the presence of a gas phase and changed from the uniform to the pitting one. The Ti was the most resistant material, but steels 08Kh21N6M2T and 10Kh17N13M2T were applicable for welded reactor structures in p-cresol alkylation. .