Results 11 to 20 of about 23,125 (181)

Granulation in UASB-Reactors

open access: yesWater Science and Technology, 1983
The influence of the sludge loading rate, the addition of a small amount of granular sludge to the seed sludge and the effect of the NH4+- and Ca2+-concentration in the influent on the pelletization-process of anaerobic methanogenic sludge in UASB-reactors were studied. Two different types of sludge granules can be obtained with VFA's as feed-solution.
Hulshoff Pol, L.W.   +3 more
openaire   +3 more sources

In dubio pro lector. Ambigüedad narrativa y duda razonable en el relato “En un bosque” de Ryunosuke Akutagawa

open access: yesForo, Revista de Derecho, 2020
Entre otros, hay dos recursos narrativos para la construcción retórica de la ambigüedad narrativa; el “narrador no fiable” y el “narratario”. Este artículo estudia la especificidad combinada de los dos procedimientos en el cuento “En un bosque” (1921 ...
Leonardo Valencia
doaj   +1 more source

Bioaugmentation of UASB reactors with immobilized Sulfurospirillum barnesii for simultaneous selenate and nitrate removal [PDF]

open access: yes, 2009
Whole-cell immobilization of selenate-respiring Sulfurospirillum barnesii in polyacrylamide gels was investigated to allow the treatment of selenate contaminated (790¿µg Se¿×¿L-1) synthetic wastewater with a high molar excess of nitrate (1,500 times) and
Aelst, A.C., van   +4 more
core   +2 more sources

Dissolved methane recovery from anaerobic effluents using hollow fibre membrane contactors [PDF]

open access: yes, 2015
Hollow fibre membrane contactor (HFMC) systems have been studied for the desorption of dissolved methane from both analogue and real anaerobic effluents to ascertain process boundary conditions for separation.
Cookney, Joanna   +6 more
core   +1 more source

Comparison of three types of anaerobic granular sludge for treating pharmaceutical wastewater

open access: yesJournal of Water Reuse and Desalination, 2018
Three types of anaerobic granular sludge for treating chemical synthesis-based pharmaceutical wastewater were compared: (1) an up-flow anaerobic sludge blanket (UASB) filled with polyvinyl alcohol (PVA) gel beads (UASB-PVA); (2) a UASB filled with ...
Yibo Wang   +4 more
doaj   +1 more source

Tratamento biológico em reatores sequenciados anaeróbio-aeróbio com efluente vinícola [PDF]

open access: yesRevista DAE, 2021
O presente estudo tem por finalidade analisar o tratamento de efluente vinícola em sistema combinado de um reator anaeróbio de manta de lodo e fluxo ascendente (Upflow Anaerobic Sludge Blanket - UASB) seguido de um filtro biológico aeróbio submerso (FBAS)
Daniel Shuzo Iken   +4 more
doaj   +1 more source

Challenges of a feasible route towards sustainability in environmental protection [PDF]

open access: yes, 2010
Anaerobic processes for treatment of low and high strength wastewaters and solid wastes constitute the core method in the natural biological mineralization (NBM) treatment concept.
Lettinga, G.
core   +3 more sources

Enhancement of overloaded waste stabilization ponds using different pretreatment technologies: a comparative study from Namibia

open access: yesJournal of Water Reuse and Desalination, 2020
Waste stabilization ponds (WSP) are a well-established wastewater treatment technology in Namibia. However, they are often overloaded and we still lack concepts and technologies for improvement.
Jochen Sinn, Susanne Lackner
doaj   +1 more source

Phosphate removal in agro-industry: pilot- and full-scale operational considerations of struvite crystallization [PDF]

open access: yes, 2009
Pilot-scale struvite crystallisation tests using anaerobic effluent from potato processing industries were performed at three different plants. Two plants (P1 & P2) showed high phosphate removal efficiencies, 89 + 3% and 75 + 8%, resulting in final ...
Carballa, Marta   +4 more
core   +2 more sources

Estimativa de recuperação de energia renovável a partir do biogás em edifícios residenciais: análise de viabilidade econômica [PDF]

open access: yesRevista DAE
O aumento da demanda de energia associado às mudanças climáticas tem dificultado o desenvolvimento sustentável. Este artigo buscou avaliar o potencial de recuperação de biogás para geração de energia elétrica, a partir de estações compactas de ...
Taísa Andrade Barbosa   +1 more
doaj   +1 more source

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