Results 31 to 40 of about 1,466,490 (333)

An anaerobic membrane bioreactor using a hollow fiber membrane and biogas agitation

open access: yesMethodsX, 2020
Many biomass disposal demonstration projects are based on anaerobic digestion. However, the excessively slow anaerobic microorganism growth rate is a drawback because a decreased anaerobic microorganism population limits methane fermentation's efficiency.
Jin Sun   +2 more
doaj   +1 more source

The Aerobic and Anaerobic Decomposition for Different Sources of Organic Material Content [PDF]

open access: yesAl-Qadisiyah Journal For Agriculture Sciences, 2016
A incubation experiment is carried out in a wood tent under aerobic and anaerobic with CRD design at 3 replicates in 24 experimental units. The experiment treatments include ( Cow residue , date palm residues without adjusted C/N , date palm residues ...
A.A. Al-Gumaily, S. S. Al-Azawi
doaj   +1 more source

Decomposition of rice straw residues and the emission of CO2, CH4 under paddy rice and crop rotation in the Vietnamese Mekong Delta region - A microcosm study

open access: yesPlant, Soil and Environment, 2022
This study investigated the influence of soil undergoing different crop rotations on the CH4, CO2 emissions, and decomposition of rice straw. The studied soil undergoing crop rotation systems were rice-rice-rice (SR) and baby corn-rice-mungbean (SB). Two
Tran Van Dung   +3 more
doaj   +1 more source

Biotechnological aspects of sulfate reduction with methane as electron donor [PDF]

open access: yes, 2010
Biological sulfate reduction can be used for the removal and recovery of oxidized sulfur compounds and metals from waste streams. However, the costs of conventional electron donors, like hydrogen and ethanol, limit the application possibilities.
Lens, P.N.L.   +2 more
core   +2 more sources

Aspectos fisiológicos e caracterização da toxidez de ácidos orgânicos voláteis em plantas Physiological aspects and characterization of volatile organic acids toxicity on plants

open access: yesCiência Rural, 2001
O manejo de resíduos orgânicos sob condições anaeróbias pode, durante a fase inicial do processo metabólico, levar à formação de ácidos orgânicos voláteis (C1-C4), cuja atividade fitotóxica determina perdas substanciais à produção vegetal.
Flávio Anastácio de Oliveira Camargo   +3 more
doaj   +1 more source

Occurrence of physiological disease in flooded rice fields Ocorrência de bico de papagaio em arroz irrigado

open access: yesCiência Rural, 1996
The aim of this report is to desenhe the occurrence of the physiological disease "Parrot beak" in flooded rice grown in Rio de Janeiro state soils. The symptoms occurred particularly in the presence of decomposing organic material, affecting the yield ...
Ademar Brancher   +2 more
doaj   +1 more source

Process Performance and Functional Microbial Community in the Anaerobic Digestion of Chicken Manure: A Review

open access: yesEnergies, 2023
Anaerobic digestion is one of the most widely used treatment methods for animal manure. Chicken manure has high methane production potential and is thus a suitable substrate for biogas plants.
Yapeng Song   +3 more
doaj   +1 more source

A preliminary examination of differential decomposition patterns in mass graves [PDF]

open access: yes, 2014
This study represents a preliminary, quantitative approach to the examination of differential decomposition patterns in mass graves. Five pairs of mass graves, each containing the carcasses of 21 rabbits, were used to examine decomposition rates at four ...
Adlam   +51 more
core   +1 more source

A model of nitrous oxide evolution from soil driven by rainfall events: 1. Model structure and sensitivity [PDF]

open access: yes, 1992
This paper describes a rain-event driven, process-oriented simulation model, DNDC, for the evolution of nitrous oxide (N2O), carbon dioxide (CO2), and dinitrogen (N2) from agricultural soils.
Frolking, Steve   +2 more
core   +2 more sources

Modelos matemáticos para a estimativa do potencial de mineralização anaeróbia do nitrogênio em solos de Várzea do Rio Grande do Sul Mathematical models to estimate the anaerobic nitrogen mineralization potential in paddy soils of Rio Grande do Sul, Brazil

open access: yesRevista Brasileira de Ciência do Solo, 2008
Diferentes modelos matemáticos são utilizados para estimar o potencial de mineralização de N no solo, e os parâmetros estimados com a decomposição anaeróbia podem ser empregados na predição da disponibilidade do N para a cultura do arroz irrigado.
Leandro Souza da Silva   +4 more
doaj   +1 more source

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