Consulta: subjectFacets:"Batch"
Registros recuperados: 4
Data/hora: 05/06/2024 08:35:15

Ethanol production from sweet sorghum juice under very high gravity conditions: Batch, repeated-batch and scale up fermentation
Provedor de dados: 69
Autores: Nuanpeng,Sunan; Laopaiboon,Lakkana; Srinophakun,Penjit; Klanrit,Preekamol; Jaisil,Prasit; Laopaiboon,Pattana.
Batch ethanol fermentations from sweet sorghum juice by Saccharomyces cerevisiae NP 01 were carried out in a 500 ml air-locked Erlenmeyer flask under very high gravity (VHG) and static conditions. The maximum ethanol production efficiency was obtained when 9 g l-1 of yeast extract was supplemented to the juice. The ethanol concentration (P), productivity (Qp) and yield (Yp/s) were 120.24 ± 1.35 g l-1, 3.01 ± 0.08 g l-1 h-1 and 0.49 ± 0.01, respectively. Scale up ethanol fermentation in a 5-litre bioreactor at an agitation rate of 100 rev min-1 revealed that P, Qp and Yp/s were 139.51 ± 0.11 g l-1, 3.49 ± 0.00 g l-1 h-1 and 0.49 ± 0.01, respectively, whereas lower P (119.53 ± 0.20 g l-1) and Qp (2.13 ± 0.01 g l-1 h-1) were obtained in a 50-litre bioreactor....
Tipo: Journal article
Palavras-chave: Batch; Ethanol fermentation; Repeated-batch; Scale up; Sweet sorghum; VHG.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000100004

Alexandrium ostenfeldii growth and spirolide production in batch culture and photobioreactor
Provedor de dados: 5
Autores: Medhioub, Walid; Sechet, Veronique; Truquet, Philippe; Bardouil, Michele; Amzil, Zouher; Lassus, Patrick; Soudant, Philippe.
Growth and spirolide production of the toxic dinoflagellate Alexandrium ostenfeldii (Danish strain CCMP1773) were studied in batch culture and a photobioreactor (continuous cultures). First, batch cultures were grown in 450 mL flasks without aeration and under varying conditions of temperature (16 and 22 degrees C) and culture medium (L1, f/2 and L1 with addition of soil extract). Second, cultures were grown at 16 degrees C in 8 L aerated flat-bottomed vessels using L1 with soil extract as culture medium. Finally, continuous cultures in a photobioreactor were conducted at 18 degrees C in L1 with soil extract; pH was maintained at 8.5 and continuous stirring was applied. This study showed that A. ostenfeldii growth was significantly affected by temperature....
Tipo: Text
Palavras-chave: Alexandrium ostenfeldii; Batch; Growth; Photobioreactor; Spirolide production.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00049/16050/15784.pdf

Simulação do transporte e da sorção de imazaquin em colunas de solo
Provedor de dados: 90
Autores: Barizon,Robson Rolland Monticelli; Lavorenti,Arquimedes; Regitano,Jussara Borges; Prata,Fábio; Tornisielo,Valdemar Luiz.
Dentre os métodos disponíveis para avaliar o comportamento de agrotóxicos no solo, destacam-se o método "batch" (análise em batelada) e o deslocamento miscível. O objetivo deste estudo foi avaliar a sorção e a mobilidade do imazaquin em solos com diferentes características químicas, físicas e mineralógicas, utilizando as técnicas de deslocamento miscível e "batch". Os ensaios foram realizados no laboratório de Ecotoxicologia do Centro de Energia Nuclear na Agricultura da Universidade de São Paulo (CENA/USP), Piracicaba, São Paulo. Os solos utilizados, classificados como Neossolo Quartzarênico (RQ), Latossolo Vermelho-Amarelo (LVA) e Latossolo Vermelho distroférrico (LVdf), foram secos ao ar e peneirados em malha 2 mm, sendo então procedida a caracterização...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicida; Não-equilíbrio; Lixiviação; Batch.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832006000400002

Semi-scale production of PHAs from waste frying oil by Pseudomonas fluorescens S48
Provedor de dados: 58
Autores: Gamal,Rawia F.; Abdelhady,Hemmat M.; Khodair,Taha A.; El-Tayeb,Tarek S.; Hassan,Enas A.; Aboutaleb,Khadiga A.
The present study aimed at developing a strategy to improve the volumetric production of PHAs by Pseudomonas fluorescens S48 using waste frying oil (WFO) as the sole carbon source. For this purpose, several cultivations were set up to steadily improve nutrients supply to attain high cell density and high biopolymer productivity. The production of PHAs was examined in a 14 L bioreactor as one-stage batch, two-stage batch, and high-cell-density fed-batch cultures. The highest value of polymer content in one-stage bioreactor was obtained after 60 h (33.7%). Whereas, the two-stage batch culture increased the polymer content to 50.1% after 54 h. High-cell-density (0.64 g/L) at continuous feeding rate 0.55 mL/l/h of WFO recorded the highest polymer content after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudomonas fluorescens S48; Biopolymer; PHAs; Batch; Two-stage batch; High-celldensity fed batch; Bioreactor; Recovery.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200034