Matches in SemOpenAlex for { <https://semopenalex.org/work/W52759498> ?p ?o ?g. }
Showing items 1 to 77 of
77
with 100 items per page.
- W52759498 abstract "In order to balance the long term carbon cycle and prevent geologically unreasonable excursions of atmospheric oxygen, it is necessary that ancient organic matter in sedimentary rocks be oxidized during continental weathering. Nevertheless, the process of natural oxidative weathering of kerogen and coal remains essentially unstudied. The air oxidation of mined coal has been observed in coal dumps and studied extensively in the laboratory, but the authors know of only one study where in situ coal oxidation by ground water has been examined. In this case oxygen content of the coal increased from 9.5% to 28.5%. Spectrometric methods indicate that oxygen uptake on coal occurs via the formation of oxygen-containing functional groups. They have begun a laboratory study of the kinetics of coal and kerogen oxidation in oxygenated water by using a stirred-flow reactor. Reaction, in terms of steady state O[sub 2] uptake, is monitored with an oxygen electrode and only samples containing very low sulfur contents are examined. Preliminary results indicate irreversible O[sub 2] uptake on both coal and kerogen with the reaction being distinctly non-zero order with respect to O[sub 2]. It is possible that oxygenated organic compounds formed by kerogen weathering may be eroded and redeposited inmore » sediments as humic-like geopolymeric substances, thus helping to explain unusually old mean surface ages of organic matter in some marine sediments. However, complete oxidation to CO[sub 2] during weathering and transportation is still necessary for much of the ancient organic matter in order to account for the cycling of carbon as indicated by the sedimentary C-13/C-12 record of the oceans.« less" @default.
- W52759498 created "2016-06-24" @default.
- W52759498 creator A5042335454 @default.
- W52759498 date "1992-01-01" @default.
- W52759498 modified "2023-09-22" @default.
- W52759498 title "Depreservation: The weathering of old sedimentary organic matter on the continents" @default.
- W52759498 hasPublicationYear "1992" @default.
- W52759498 type Work @default.
- W52759498 sameAs 52759498 @default.
- W52759498 citedByCount "0" @default.
- W52759498 crossrefType "journal-article" @default.
- W52759498 hasAuthorship W52759498A5042335454 @default.
- W52759498 hasConcept C107872376 @default.
- W52759498 hasConcept C109007969 @default.
- W52759498 hasConcept C126559015 @default.
- W52759498 hasConcept C127313418 @default.
- W52759498 hasConcept C151730666 @default.
- W52759498 hasConcept C158787203 @default.
- W52759498 hasConcept C17409809 @default.
- W52759498 hasConcept C178790620 @default.
- W52759498 hasConcept C185592680 @default.
- W52759498 hasConcept C199289684 @default.
- W52759498 hasConcept C2776062231 @default.
- W52759498 hasConcept C2779196632 @default.
- W52759498 hasConcept C2780173749 @default.
- W52759498 hasConcept C40724407 @default.
- W52759498 hasConcept C48743137 @default.
- W52759498 hasConcept C518851703 @default.
- W52759498 hasConcept C518881349 @default.
- W52759498 hasConcept C540031477 @default.
- W52759498 hasConcept C6494504 @default.
- W52759498 hasConceptScore W52759498C107872376 @default.
- W52759498 hasConceptScore W52759498C109007969 @default.
- W52759498 hasConceptScore W52759498C126559015 @default.
- W52759498 hasConceptScore W52759498C127313418 @default.
- W52759498 hasConceptScore W52759498C151730666 @default.
- W52759498 hasConceptScore W52759498C158787203 @default.
- W52759498 hasConceptScore W52759498C17409809 @default.
- W52759498 hasConceptScore W52759498C178790620 @default.
- W52759498 hasConceptScore W52759498C185592680 @default.
- W52759498 hasConceptScore W52759498C199289684 @default.
- W52759498 hasConceptScore W52759498C2776062231 @default.
- W52759498 hasConceptScore W52759498C2779196632 @default.
- W52759498 hasConceptScore W52759498C2780173749 @default.
- W52759498 hasConceptScore W52759498C40724407 @default.
- W52759498 hasConceptScore W52759498C48743137 @default.
- W52759498 hasConceptScore W52759498C518851703 @default.
- W52759498 hasConceptScore W52759498C518881349 @default.
- W52759498 hasConceptScore W52759498C540031477 @default.
- W52759498 hasConceptScore W52759498C6494504 @default.
- W52759498 hasLocation W527594981 @default.
- W52759498 hasOpenAccess W52759498 @default.
- W52759498 hasPrimaryLocation W527594981 @default.
- W52759498 hasRelatedWork W1659659482 @default.
- W52759498 hasRelatedWork W169423944 @default.
- W52759498 hasRelatedWork W1825216 @default.
- W52759498 hasRelatedWork W191591509 @default.
- W52759498 hasRelatedWork W1967283301 @default.
- W52759498 hasRelatedWork W1977618199 @default.
- W52759498 hasRelatedWork W1985207582 @default.
- W52759498 hasRelatedWork W1991501192 @default.
- W52759498 hasRelatedWork W2010684644 @default.
- W52759498 hasRelatedWork W2022945306 @default.
- W52759498 hasRelatedWork W2023128965 @default.
- W52759498 hasRelatedWork W2044425792 @default.
- W52759498 hasRelatedWork W2051610825 @default.
- W52759498 hasRelatedWork W2055138784 @default.
- W52759498 hasRelatedWork W2071711719 @default.
- W52759498 hasRelatedWork W2087917706 @default.
- W52759498 hasRelatedWork W2161791349 @default.
- W52759498 hasRelatedWork W3094770267 @default.
- W52759498 hasRelatedWork W3148676963 @default.
- W52759498 hasRelatedWork W2108271102 @default.
- W52759498 isParatext "false" @default.
- W52759498 isRetracted "false" @default.
- W52759498 magId "52759498" @default.
- W52759498 workType "article" @default.