Ecological bricks produced from scheelite residue, stone powder and cassava wastewater for non-structural masonry

The study aimed to evaluate chemical, microbiological and hydro-physical changes of a Dystrophic Yellow Latosol, receiver of different levels of manipueira (cassava wastewater) application, in the cultivation of 'Terra Maranhão' banana. The experimental design was a randomized block with three replications in a factorial scheme 3 x 4, in which it was considered three soil depths and four levels of manipueira. It was evaluated the weighted mean diameter of the aggregate, the percentage of aggregation at different periods, soil density, particle density, porosity and soil saturated hydraulic conductivity, in addition to pH of P (mg dm -3), K (mg dm-3), Ca (cmolc dm-3), Mg (cmolc dm-3), Ca+Mg (cmolc dm-3), Al (cmolc dm-3), Na (cmolc dm -3), H+Al (cmolc dm-3), CEC (cmolc dm-3), V%, OM (g kg-1), soil microbial biomass (Ug Cg-1 dry soil), acid phosphatase (Ug PNP g-1 h-1). The use of manipueira influenced some physical characteristic of the soil, but it was not possible to specify the effect of increasing application dosage. Therefore, the application did not affect the biological indicators assessed in the soil or its pH. The use of manipueira as a fertilizer in the doses used in this study showed low increase of K, P, H+Al and Al in the soil and a good increase of Mg, Ca and Ca+Mg, Na, CEC and V%.

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Anaerobic Digestion of Cassava Wastewater Pre-treated by Fungi

Applied Biochemistry and Biotechnology ◽

10.1007/s12010-013-0153-y ◽

2013 ◽

Vol 169 (8) ◽

pp. 2457-2466 ◽

Cited By ~ 2

Author(s):

Paula Loureiro Paulo ◽

Thais Adriana Colman-Novaes ◽

Laynara Dayene Soares Obregão ◽

Marc Árpád Boncz

Keyword(s):

Anaerobic Digestion ◽

Cassava Wastewater

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Socio-economic impact of cassava wastewater on some communities in Benue State, Nigeria

International Journal of Environment Agriculture and Biotechnology ◽

10.22161/ijeab.66.13 ◽

2021 ◽

Vol 6 (6) ◽

pp. 111-118

Author(s):

Onyeke Ochu Linda ◽

Amuta Elizabeth ◽

Aguoru Celestine

Keyword(s):

Economic Impact ◽

Socio Economic Impact ◽

Cassava Wastewater

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Modelling anaerobic digestion acclimatisation to a biodegradable toxicant: application to cyanide

Water Science & Technology ◽

10.2166/wst.2006.534 ◽

2006 ◽

Vol 54 (4) ◽

pp. 129-137 ◽

Cited By ~ 11

Author(s):

U. Zaher ◽

M.S. Moussa ◽

I.N. Widyatmika ◽

P. van Der Steen ◽

H.J. Gijzen ◽

...

Keyword(s):

Anaerobic Digestion ◽

Inorganic Nitrogen ◽

Degradation Pathway ◽

Anaerobic Sludge ◽

Buffer Solution ◽

Cyanide Toxicity ◽

Cyanide Degradation ◽

Hydrogenotrophic Methanogens ◽

Cassava Wastewater ◽

Equilibrium Calculations

The observed acclimatisation to biodegradable toxicants in anaerobic cassava wastewater treatment is explained by modelling anaerobic cyanide degradation. A complete degradation pathway is proposed for cyanide. Cyanide degradation is modelled as enzymatic hydrolysis to formate and ammonia. Ammonia is added to the inorganic nitrogen content of the digester while formate is degraded by the hydrogenotrophic methanogens. Cyanide irreversible enzyme inhibition is modelled as an inhibition factor to acetate uptake processes. Cyanide irreversible toxicity is modelled as a decay factor to the acetate degraders. Cyanide as well as added phosphorus buffer solution were considered in the chemical equilibrium calculations of pH. The observed reversible effect after acclimatisation of sludge is modelled by a population shift between two aceticlastic methanogens that have different tolerance to cyanide toxicity. The proposed pathway is added to the IWA Anaerobic Digestion Model no.1 (ADM1). The ADM1 model with the designed extension is validated by an experiment using three lab-scale upflow anaerobic sludge bed reactors which were exposed to different cyanide loadings.

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Carcass and non-carcass component characteristics of lambs fed with cassava wastewater dregs in replacement of corn

Semina Ciências Agrárias ◽

10.5433/1679-0359.2016v37n4supl1p2711 ◽

2016 ◽

Vol 37 (4Supl1) ◽

pp. 2711 ◽

Cited By ~ 1

Author(s):

Daniel Barros Cardoso ◽

Robson Magno Liberal Véras ◽

Francisco Fernando Ramos de Carvalho ◽

André Luiz Rodrigues Magalhães ◽

Gustavo Araújo de Vasconcelos ◽

...

Keyword(s):

Body Weight ◽

Block Design ◽

Carcass Characteristics ◽

Linear Increase ◽

Carcass Weight ◽

Replacement Level ◽

Randomized Block Design ◽

Feedlot Lambs ◽

Retail Cuts ◽

Cassava Wastewater

The objective was to evaluate the effect of the substitution (0, 33, 66 and 100%) of corn by cassava wastewater dregs on carcass characteristics and non-carcass components of crossbred Santa Inês lambs. Forty male sheep, uncastrated with an average initial body weight of 20 ± 1.87 kg and five months of age, were used. These were housed in individual pens in a randomized block design with four treatments and ten repetitions and slaughtered after 70 days of confinement. Quadratic effect (P < 0.05) was observed for the empty body weight (EBW), hot carcass weight (HCW) and cold carcass weight (CCW) and carcass compactness index (CCI), with maximum points of 36.14, 19.45, 20.20 and 0.31 kg cm-1 for the replacement level of corn for cassava wastewater dregs, 50.0, 53.84, 54.04 and 45.45% respectively. There was also an effect (P < 0.05) on the weights of the rumen and “Buchada”, with maximum points of 0.909 and 6.25 kg per replacement level, 49.11 and 51.29% respectively. As for retail cuts, only the efficiency of the leg was altered (P < 0.05), having a linear increase while the other variables were not affected. Cassava wastewater dregs can be used in full as an alternative food in the diet of feedlot lambs without harming the main carcass characteristics and non-carcass components.

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Biocidal potential of some organic by-products on sanitary and physiological quality of red and white fava beans seeds

Australian Journal of Crop Science ◽

10.21475/ajcs.20.14.03.p1997 ◽

2020 ◽

pp. 462-468

Author(s):

Maria Josilene de Oliveira Sousa ◽

Fernandes Antonio de Almeida ◽

Maria Lucia Tiburtino Leite ◽

Wéverson Lima Fonseca ◽

Kilson Pinheiro Lopes ◽

...

Keyword(s):

Plant Pathogens ◽

Phaseolus Lunatus ◽

Fava Bean ◽

Organic Products ◽

Physiological Quality ◽

Fava Beans ◽

Cassava Wastewater ◽

Social Importance ◽

By Products

Fava bean (Phaseolus lunatus L.), is a rustic species and has great adaptability to arid regions of Brazil and stands out for its social importance and high levels of protein. Even so, the culture presents low productivity due to several factors, such as the quality of the seed. In this sense, the objective of this study was to evaluate the fungitoxic action of organic products, namely vinasse, cassava wastewater and agave extract, isolated and mixed, for treatment of beans seeds. The experimental design was completely randomized in factorial 8 x 2 (eight byproducts x two seed groups) with five replications. The seeds were evaluated for hysiological and sanitary quality, properly incubated in Petri plates on a triple layer of filter paper, sterilized and moistened with distilled water, where the assessments of the incidence of plant pathogens were performed after 7 days of incubation. Through the results, it is observed that the seeds of red fava bean were the most tolerant to organic products, without compromising the physiological quality. In general, the byproducts have significantly reduced the incidence of fungi identified in red and white fava bean.

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Production of natural aroma by yeast in wastewater of cassava starch industry

Engenharia Agrícola ◽

10.1590/1809-4430-eng.agric.v35n4p721-732/2015 ◽

2015 ◽

Vol 35 (4) ◽

pp. 721-732 ◽

Cited By ~ 4

Author(s):

Simone M. M. Oliveira ◽

Simone D. Gomes ◽

Luciane Sene ◽

Divair Christ ◽

Julia Piechontcoski

Keyword(s):

Food Industry ◽

Cassava Starch ◽

Glucose Yield ◽

Batch System ◽

Low Concentrations ◽

Chewing Gums ◽

Biotechnological Processes ◽

Cassava Wastewater ◽

Yield Factor ◽

Starch Industry

ABSTRACT 2-Phenylethanol (PE) is an aromatic alcohol with a characteristic odor of roses, widely used in food industry to modify certain aroma compositions in formulations with fruit, jam, pudding, and chewing gums, and also in cosmetic and fragrance industry. This compound occurs naturally in low concentrations in some essential oils from flowers and plants. An alternative to plants extraction are biotechnological processes. This study evaluated 2-phenylethanol’s production in cultivation of Saccharomyces cerevisiae in cassava wastewater originated from starch industry. The substrate was supplemented with glucose and L-phenylalanine in order to obtain higher 2-phenylethanol concentrations and better efficiency in glucose/2-phenylethanol conversion. It was performed using Rotatable Center Composite Design and response surface analysis. Cultures were performed under aerobic conditions in a batch system in Erlenmeyer flasks containing 50 mL of medium in shaker at 150 rpm and 24 ± 1 ºC. The highest PE values were obtained with supplementation of 20.0 g.L-1 of glucose and 5.5 g.L-1 of L-phenylalanine, which has been experimentally validated, obtaining a PE production of 1.33 g.L-1 and PE/glucose yield factor of 0.070 g.g-1, equivalent to 74.3 and 89.7% of desirability values according to the validated model.

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