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| Registros recuperados: 24 | |
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| Larsen,Andrea C.; Gomes,Benedito M.; Gomes,Simone D.; Zenatti,Dilcemara C.; Torres,Douglas G. B.. |
| The Brazil's Biodiesel Production and Use Program introduces biodiesel in the Brazilian energy matrix, bringing along the perspective of a growth of the glycerin offer, co-product generated in the proportion of 10 kg for each 100 L of biodiesel. The aim of this study was to evaluate the addition of crude glycerin in the anaerobic digestion of cassava starch industry effluent (cassava wastewater), in a horizontal semi-continuous flow reactor of one phase in laboratory scale. It was used a reactor with a 8.77 L of useful volume, a medium support for corrugated conduit of polyvinyl chloride (PVC), temperature of 261 ºC, fed with cassava wastewater and glycerin, with hydraulic detention times of 4 and 5 days and increasing volumetric organic load of 3.05;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cassava wastewater; Biodiesel; Biogas; Glycerol. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000200013 |
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| Kunzler,Kathia R.; Gomes,Simone D.; Piana,Pitágoras A.; Torres,Douglas G. B.; Vilas Boas,Marcio A.; Tavares,Maria H. F.. |
| The use of anaerobic reactors with media support in the treatment of wastewater from the cassava starch industry has emerged as a viable option because it allows the application of high organic loads and a significant reduction of the HDT needed for the treatment. This research aimed at studying the process of biodigestion in two anaerobic reactors with bamboo support, in the treatment of effluent of cassava starch, by evaluating their performance. The two reactors used present the following diameter: length ratio, 1:6 and 1:3. The organic loads applied to the systems were 0.519, 1.156, 1.471, 3.049, 4.347, 4.708 and 5.601g.L-1.d-1. Regarding the efficiency of removal of COD, TS and TVS, no statistically significant differences were obtained between the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodigestion; Organic load; Piston flow. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000400003 |
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| dal Bosco,Tatiane C.; Sampaio,Silvio C.; Opazo,Miguel A. U.; Gomes,Simone D.; Nóbrega,Lúcia H. P.. |
| O objetivo deste trabalho foi avaliar a poluição difusa referente ao cobre e ao zinco no solo e no material de escoamento superficial quando da aplicação de água residuária de suinocultura (ARS) em solo cultivado com soja, sob condição de chuva simulada. O experimento foi instalado em Toledo - PR, sendo aplicadas ao solo cinco taxas de ARS (0; 50; 100; 150 e 200 m³ ha-1 no ciclo), em três repetições por tratamento, divididas em seis aplicações ao longo do ciclo da soja. Foram instaladas calhas coletoras do material escoado e fizeram-se seis simulações de chuva durante o experimento, resultando em seis coletas do material escoado. Ao final do ciclo da soja, foram coletadas amostras de solo em cada uma das parcelas experimentais, em três profundidades, para... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Escoamento superficial; Lixiviação de íons; Reúso de água. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162008000400010 |
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| Tonello,Tamiris U.; Andreani,Cristiane L.; Mari,Angelo G.; Fernandes,José R.; Gomes,Simone D.. |
| ABSTRACT The hydrogen is a fuel with a high energy density. Studies have sought to verify the potential of different residues and configurations of reactors in the production of biohydrogen. This study evaluated the influence of the organic loading rate on the production of biohydrogen from cassava starch wastewater (CSW) in anaerobic sequencing batch biofilm reactors (AnSBBR) operated in a fed-batch. In the tests, the organic loading rates of 9.0; 13.5 and 18.0 gCT L−1 d−1 were used, at cycle times (CT) of 4; 4 and 2 h (tests I, II and III, respectively). The reactor was inoculated with sludge from a pilot anaerobic reactor used in the treatment of CSW, heat treated (heated at 90°C for 15 min). With the increase of the organic load (condition I to II)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fed-batch; Fermentative process; Bioenergy; Cassava starch wastewater. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000500768 |
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| Kuczman,Osvaldo; Tavares,Maria H. F.; Gomes,Simone D.; Guedes,Luciana P. C.; Grisotti,Geovane. |
| The cassava starch industries generate a large volume of wastewater effluent that, stabilized in ponds, wastes its biogas energy and pollutes the atmosphere. To contribute with the reversion of this reality, this manipueira treatment research was developed in one phase anaerobic horizontal pilot reactor with support medium in bamboo pieces. The reactor was excavated into the ground and sealed with geomembrane in HDPE, having a volume equal to 33.6 m³ and continuous feeding by gravity. The stability indicators were pH, volatile acidity/total alkalinity ratio and biogas production. The statistical analyses were performed by a completely randomized design, with answers submitted to multivariate analysis. The organical loads in COD were 0.556; 0.670; 0.678 and... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Biodigester; Biogas; Anaerobic digestion; Cassava; Cassava wastewater. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600021 |
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| Anami,Marcelo H.; Sampaio,Silvio C.; Suszek,Morgana; Gomes,Simone D.; Queiroz,Manoel M. F. de. |
| A fertirrigação com águas residuárias da suinocultura vem sendo muito difundida no País, principalmente na região sul do Brasil, entretanto, o alto potencial poluidor dos dejetos pode tornar-se uma ameaça de contaminação de solos e águas superficiais e subterrâneas se utilizados em quantidades excessivas. Neste trabalho o objetivo principal foi avaliar o processo de lixiviação de íons nitrato e fosfato em colunas de solo, obtendo-se os coeficientes de dispersão hidrodinâmico e o fator de retardamento para a determinação do potencial de contaminação dos lençóis de água subterrâneos. Verificou-se, ainda, o efeito da aplicação de águas residuárias da suinocultura tratada com reatores anaeróbios sobre as propriedades físico-químicas do solo, cujos resultados... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Movimento de íons; Fertirrigação; Contaminação do solo. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662008000100011 |
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| Lopes,Carla L.; Mees,Juliana B. R.; Sene,Luciane; Carvalho,Karina Q. de; Christ,Divair; Gomes,Simone D.. |
| This study aimed to evaluate the influence of airflow (0.25, 0.50 and 0.75 L.L-1.min-1) and cycle time (10.45 h, 14.25 h and 17.35 h) on a sequencing batch reactor (SBR) performance in promoting nitrification and denitrification of poultry slaughterhouse wastewater. The operational stages included feeding, aerobic and anoxic reactions, sedimentation and discharge. SBR was operated in a laboratory scale with a working volume of 4 L, keeping 25% of biomass retained inside the reactor as inoculum for the next batch. In the anoxic stage, C: N ratio was maintained between 5 and 6 by adding cassava starch wastewater. A factorial design (22) with five repetitions was designed at the central point to evaluate the influence of cycle time and airflow on total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitrification; Denitrification; Response surface methodology; Fluorescent in situ hybridization. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000300567 |
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| Coldebella,Priscila F.; Gomes,Simone D.; Evarini,Janete A.; Cereda,Marney P.; Coelho,Sílvia R. M.; Coldebella,Anderson. |
| The cassava leaf, waste generated in the harvest of the roots, is characterized by high content of protein, vitamins and minerals; however, its use is limited due to the high fiber content and antinutritional substances, which can be removed by obtaining protein concentrates. In this context, the objective of this study was to evaluate protein extraction processes, aiming the use of cassava leaves (Manihot esculenta Crantz) as an alternative protein. Four methods were tested: 1) Coagulation of Proteins by Lowering the Temperature, 2) Extraction by Isoelectric Precipitation, 3) Solubilization of Proteins and 4) Fermentation of Filter Leaf Juice. To obtain the concentrates, the use of fresh or dried leaves and extraction in one or two steps were also... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Exploitation; Agricultural waste; Protein extraction. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000600015 |
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| Torres,Douglas G. B.; Lucas,Shaiane Dal' Maso; Andreani,Cristiane L.; Carvalho,Karina Q. de; Coelho,Silvia R. M.; Gomes,Simone D.. |
| ABSTRACT Fixed-bed reactors have been considered promise alternatives for hydrogen production due to their simple construction and increase in the biomass retention. The purpose of this study was to investigate the biological production of hydrogen in anaerobic fixed-bed reactors with cassava starch wastewater used as substrate. Different support materials and arrangements of fixed-bed were used to evaluate the biological production of hydrogen in anaerobic continuous fixed-bed reactors, with cassava starch wastewater as substrate - recycled low-density polyethylene scraps, in packed bed (R1), recycled low-density polyethylene cylinders, in ordained bed (R3) and bamboo stems, in vertical arrangement (R2 and R4). In R1 the initial pH was adjusted for 6.0,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bio-energy; Fermentative processes; Bamboo; Polyethylene; Agro-industrial effluent. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000100160 |
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| Andreani,Cristiane L.; Torres,Douglas G. B.; Schultz,Leonardo; Carvalho,Karina Q. de; Gomes,Simone D.. |
| Attempting to associate waste treatment to the production of clean and renewable energy, this research sought to evaluate the biological production of hydrogen using wastewater from the cassava starch treatment industry, generated during the processes of extraction and purification of starch. This experiment was carried out in a continuous anaerobic reactor with a working volume of 3L, with bamboo stems as the support medium. The system was operated at a temperature of 36°C, an initial pH of 6.0 and under variations of organic load. The highest rate of hydrogen production, of 1.1 L.d-1.L-1, was obtained with application of an organic loading rate of 35 g.L-1.d-1, in terms of total sugar content and hydraulic retention time of 3h, with a prevalence of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fixed bed reactor; Agroindustrial wastes; Fermentation processes. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000300578 |
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| Kreutz,Cristiane; Carvalho,Karina Q. de; Passig,Fernando H.; Belini,Aldria D.; Cordovil,Cláudia S. de C. M. dos S.; Gomes,Simone D.. |
| ABSTRACT The hydrodynamic behavior of an anaerobic fixed bed reactor (AFBR) was evaluated in the treatment of cattle slaughterhouse wastewater. The AFBR was operated at hydraulic retention time (HRT) of 14, 11 and 8 h. Stimulus-response assays were carried out with Eosin Y and the experimental data were adjusted to the single-parameter theoretical models of dispersion and N-continuous stirred tank reactors in series (N-CSTR). The experimental results of the residence time distribution curves showed that at lower flow rate, the reactor showed plug flow behavior with correlation coefficient (r) of 0.88 and number of dispersion of 0.2 for high dispersion (HD). However, at higher and intermediate flow rates, the AFBR behave as a complete mixture flow, (r) of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dead space volume; Hydraulic efficiency; Hydraulic short; Circuiting; Residence; Time distribution. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000300403 |
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| Hermes,Eliane; Rocha,Dayane C. da; Orssatto,Fábio; Lucas,Juliana F.R.; Gomes,Simone D.; Sene,Luciane. |
| The aim of this study was to isolate microorganisms that produce lipase and to assess the efficiency of COD removal intreatment of cheese whey under different operating conditions. The microorganisms were isolated from cheese whey and a commercial product; it was selectedthreemicroorganisms that obtained the best response to the lipolytic activity test through the enzyme index. Then, the microorganisms were inoculated in sterilized cheese whey samples, for two pH values (6.2 and 7.0), incubated at 35 °C and 150 rpm in shaker and the lipolityc activity and the efficiency of COD removal were measured in two time periods (24 and 48h). After incubation, it was observed that the treatments showed a good removal efficiency of COD for the pre-treatment and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Waste treatment; Dairy industry; Lipases. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000200016 |
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| Mees,Juliana B. R.; Gomes,Simone D.; Vilas Boas,Márcio A.; Gomes,Benedito M.; Passig,Fernando H.. |
| A sequential batch reactor with suspended biomass and useful volume of 5 L was used in the removal of nutrients and organic matter in workbench scale under optimal conditions obtained by central composite rotational design (CCRD), with cycle time (CT) of 16 h (10.15 h, aerobic phase, and 4.35 h, anoxic phase) and carbon: nitrogen ratio (COD/NO2--N+NO3--N) equal to 6. Complete cycles (20), nitrification followed by denitrification, were evaluated to investigate the kinetic behavior of degradation of organic (COD) and nitrogenated (NH4+-N, NO2--N and NO3--N) matter present in the effluent from a bird slaughterhouse and industrial processing facility, as well as to evaluate the stability of the reactor using Shewhart control charts of individual measures. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitrifying activity; Kinetic constants; Nutrient removal; Quality control; Processing capacity. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162011000500013 |
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| Pelissari,Rodrigo A. Z.; Sampaio,Sílvio C.; Gomes,Simone D.; Crepalli,Mauro da S.. |
| O objetivo deste trabalho foi avaliar os efeitos do lodo têxtil, adubação e irrigação com água residuária da suinocultura na produção de mudas de Eucalyptus grandis W, Hill ex Maiden. Os tratamentos foram constituídos de três fatores: adubação química (0;1 e 2 gramas de NPK 14-14-14 por tubete), irrigação (água e água residuária da suinocultura) e substrato com cinco níveis de fracionamento do lodo têxtil e substrato comercial (0; 25; 50; 75 e 100%). Avaliaram-se quatro épocas durante a produção das mudas: germinação. (21 dias), sombreamento (50%, 40 dias), sombreamento (18%, 20 dias) e pleno sol (9 dias), com total de 90 dias de produção. As irrigações foram realizadas por aspersão, com lâmina de 12 mm dia-1. Os parâmetros agronômicos avaliados foram:... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reúso de água; Resíduos sólidos; Aplicação de efluentes. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162009000200012 |
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| Araujo,Izabela R. C.; Gomes,Simone D.; Tonello,Tamiris U.; Lucas,Shaiane Dal'Maso; Mari,Angelo G.; Vargas,Rodrigo J. de. |
| ABSTRACT The aim of this study was to evaluate the behavior of an anaerobic reactor of packed-bed and continuous flow, in relation to the biogas and methane production and the removal of organic load, from the wastewater of cassava starch extraction. For this purpose, were tested, in a reactor with a useful volume of 2.82 L and support mean of polypropylene filled with polyethylene foam, the organic loading rate (OLR) of 2.5, 5.0, 8.0 and 10.0 g L-1d-1. It was evaluated the removal of COD, the pH, the VA/TA ratio, the biogas and the methane production. It was concluded from this study that it is possible to produce biogas with methane percentages higher than 80% (maximum) and remove the organic load more than 90% under the tested conditions. In relation to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Methanogenic reactor; Anaerobic biodigestion; Biogas. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000200270 |
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| Zenatti,Dilcemara C.; Gomes,Simone D.; Fazolo,Ajadir; Costanzi,Ricardo N.; Hasan,Salah D. M.; Gentelini,André L.. |
| A ocorrência de compostos nitrogenados em água residuária de abatedouro de tilápia acima dos limites legais, tem causado sérios problemas de poluição em corpos d'água receptores. O processo biológico para remoção dessas substâncias comumente encontradas sob a forma de nitrogênio amoniacal, é conhecido como nitrificação. Objetivou-se, com o presente trabalho, estudar o efeito do tempo de reação (TR) e da aeração na eficiência da remoção de nitrogênio amoniacal e na conversão do nitrogênio amoniacal a nitrato, de água residuária de abate de tilápia em um reator em batelada sequencial com biofilme. O experimento foi executado usando-se dois TR(6 e 12 h) e dois níveis de vazão de ar (3 e 6 L min-1); avaliaram-se quatro tratamentos a partir da combinação dessas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aeração; Tempo de reação; RBS; Remoção de nitrogênio. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662009000600013 |
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| Doblinski,André F.; Sampaio,Silvio C.; Silva,Vanderlei R. da; Nóbrega,Lúcia H. P.; Gomes,Simone D.; Dal Bosco,Tatiane C.. |
| In order to verify the environmental impact of the application of swine farming wastewater in bean crop, an experiment was set up in the Experimental Farm of PUCPR - Toledo, PR, Brazil. Runoff and soil samples were collected at the end of the experiment. Four wastewater treatments were utilized during the experiment (50, 100, 150 and 200 m³ ha-1) and the without wastewater as the control. The results demonstrate that (i) the amounts of potassium, phosphorus, and nitrogen in runoff are exponential, (ii) that phosphorus has a seven-fold polluting potential compared to potassium and three-fold compared to nitrogen, and (iii) that the mobility of potassium in the soil profile is the largest, followed by those of nitrogen and phosphorus. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water reuse; Runoff; Environmental pollution. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662010000100012 |
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| Kreutz,Cristiane; Passig,Fernando H.; Carvalho,Karina Q. de; Mees,Juliana B. R.; Gomes,Simone D.. |
| This paper sought to evaluate the behavior of an upflow Anaerobic-Aerobic Fixed Bed Reactor (AAFBR) in the treatment of cattle slaughterhouse effluent and determine apparent kinetic constants of the organic matter removal. The AAFBR was operated with no recirculation (Phase I) and with 50% of effluent recirculation (Phase II), with θ of 11h and 8h. In terms of pH, bicarbonate alkalinity and volatile acids, the results indicated the reactor ability to maintain favorable conditions for the biological processes involved in the organic matter removal in both operational phases. The average removal efficiencies of organic matter along the reactor height, expressed in terms of raw COD, were 49% and 68% in Phase I and 54% and 86% in Phase II for θ of 11h and 8h,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Kinetic; Cattle slaughterhouse; Combined treatment system. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000200015 |
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| Registros recuperados: 24 | |
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