Results 81 to 90 of about 65,305 (184)

Biomethanation potential of macroalgae Ulva spp. and Gracilaria spp. and in co-digestion with waste activated sludge [PDF]

, 2012
Biochemical methane potential of four species of Ulva and Gracilaria genus was assessed in batch assays at mesophilic temperature. The results indicate a higher specific methane production (per volatile solids) for one of the Ulva sp. compared with other
Alves, M. M., Costa, J. C., Gonçalves, P. R., Nobre, A. M.   +3 more
core   +1 more source

Biochemical Methane Potential of Palm Oil Mill Effluent (POME) Co-Digested with Rubber Latex Effluent (LTE): Effect of POME/LTE Ratio and Temperature

Walailak Journal of Science and Technology, 2019
Single anaerobic digestion of rubber latex effluent (LTE) is known to be difficult, low yield and produces biogas containing high sulfur dioxide and ammonia.
Chairat Siripatana, Nattawut Yingthavorn, Laddawan Noynoo, Tammathat Boonkamnerd, Nirattisai Rakmak   +4 more
doaj  

Paleoproterozic Icehouses and the Evolution of Oxygen Mediating Enzymes: The Case for a Late Origin of Photosystem -- II [PDF]

, 2008
Two major geological problems regarding the origin of oxygenic photosynthesis are: (1) identifying a source of oxygen predating biological oxygen production and capable of driving the evolution of oxygen tolerance, and (2) determining when oxygenic ...
Kirschvink, Joseph L., Kopp, Robert E.
core  

Repeated pulse feeding induces functional stability in anaerobic digestion [PDF]

, 2013
Anaerobic digestion is an environmental key technology in the future bio-based economy. To achieve functional stability, a minimal microbial community diversity is required. This microbial community should also have a certain “elasticity”, i.e.
Aiyuk, Boon, Boon, Boon, Briones, Carballa, Conklin, De Vrieze, Dearman, Delbes, Fernandez, Greenberg, Haruta, Holm-Nielsen, Krakat, Lesteur, Marzorati, Mata-Alvarez, Muyzer, Peterson, Pycke, Read, Riviere, Verstraete, Verstraete, Wijekoon, Wittebolle, Wittebolle, Yu, Zamalloa   +29 more
core   +1 more source

Origin of Life

, 2012
The evolution of life has been a big enigma despite rapid advancements in the fields of biochemistry, astrobiology, and astrophysics in recent years.
A. Gibbons, Ashwini Kumar Lal, C. Bohler, C. Chyba, C. Huber, C.E. Manning, C.J. Salter, D. Penny, D. Warmflash, D.S. Heckman, D.S. Mckay, E.G. Roussel, F. Hoyle, F. Hoyle, F. Hoyle, G.F. Joyce, H.C. Arp, H.C. Urey, J. Li, J. Maddox, J. Postgate, J.B.S. Haldane, J.K. Fredrickson, J.V. Narlikar, J.W. Schopf, K. Kvenvolden, L.-H. Lin, L.E. Orgel, L.J. Richardson, M.T. Mondigan, N.C. Wickramsinghe, P. David, P. Ehrenfreund, P. Senapathy, R. Shapiro, R.D. Lorenz, S Arrhenius, S.J. Mojzsis, S.L. Miller, S.L. Miller, Stofan, T. Brock, T.D. Brack, W. Gilbert, W. Martin, Y.-J. Kuan, Y.-J. Ma   +46 more
core   +1 more source

Long-term carbon and nitrogen dynamics at SPRUCE revealed through stable isotopes in peat profiles [PDF]

, 2017
Peatlands encode information about past vegetation dynamics, climate, and microbial processes. Here, we used δ15N and δ13C patterns from 16 peat profiles to deduce how the biogeochemistry of the Marcell S1 forested bog in northern Minnesota responded to ...
Chen, Janet, Hanson, Paul J., Hobbie, Erik A., Hofmockel, Kirsten S., Iversen, Colleen M., McFarlane, Karis J., Thorp, Nathan R.   +6 more
core   +3 more sources

The Evolution of Multicomponent Systems at High Pressures: VI. The Thermodynamic Stability of the Hydrogen-Carbon System: The Genesis of Hydrocarbons and the Origin of Petroleum

, 2002
The spontaneous genesis of hydrocarbons which comprise natural petroleum have been analyzed by chemical thermodynamic stability theory. The constraints imposed upon chemical evolution by the second law of thermodynamics are briefly reviewed; and the ...
Alekseev, Vladimir A., Bendeliani, Nikolai A., Kenney, J. F., Kutcherov, Vladimir G.   +3 more
core   +2 more sources

An Evaluation of the Physicochemical and Biological Characteristics of Foaming Swine Manure [PDF]

, 2015
Foam accumulation in deep-pit manure storages is an increasing concern for swine producers because of the logistical and safety-related problems it creates.
Andersen, Daniel, Andersen, Daniel, Kerr, Brian, Pepple, Laura, Rosentrater, Kurt, Rosentrater, Kurt, Trabue, Steven, Van Weelden, Mark   +7 more
core   +2 more sources

Influence of chemical composition on biochemical methane potential of fruit and vegetable waste [PDF]

, 2017
This study investigates the influence of chemical composition on the biochemical methane potential (BMP) of twelve different batches of fruit and vegetable waste (FVW) with different compositions collected over one year. BMP ranged from 288 to 516 LN CH4
Edwiges, Thiago, Flotats Ripoll, Xavier, Frare, Laercio, Lins, Leonardo, Mayer, Bruna, Sarolli, Monica, Triolo, Jin Mi   +6 more
core   +4 more sources

Biochemical methane potential of pumpkin energy crops co-digested with swine wastewater

Waste Management Bulletin
Anaerobic co-digestion (ACoD) of livestock waste with energy crops (EC) can increase methane yield and the profitability of biodigesters. The biochemical methane potential (BMP) of two commercial pumpkin species, “Paulista” (Cucurbita moschata) and ...
Edilene da Silva Pereira, Ritieli Marostica, Jackeline Tatiane Gotardo, Jorge de Lucas Junior, Mônica Sarolli Silva de Mendonça Costa   +4 more
doaj   +1 more source