scholarly journals Efficacy of Different Waste and By-Products from Forest and Food Industries in the Removal/Retention of the Antibiotic Cefuroxime

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1151
Author(s):  
Raquel Cela-Dablanca ◽  
Carolina Nebot ◽  
Lucia Rodríguez López ◽  
David Fernández-Calviño ◽  
Manuel Arias-Estévez ◽  
...  
Keyword(s):  
Environmental Pollution ◽  
Environmental Contamination ◽  
Wood Ash ◽  
Mussel Shell ◽  
Food Industries ◽  
Eucalyptus Leaves ◽  
Batch Type ◽  
Adsorption Data ◽  
Langmuir And Freundlich Models ◽  
By Products

Environmental pollution due to antibiotics is a serious problem. In this work, the adsorption and desorption of the antibiotic cefuroxime (CFX) were studied in four by-products/residues from the forestry and food industries. For this, batch-type experiments were carried out, adding increasing concentrations of CFX (from 0 to 50 µmol L−1) to 0.5 g of adsorbent. The materials with a pH higher than 9 (mussel shell and wood ash) were those that presented the highest adsorption percentages, from 71.2% (23.1 µmol kg−1) to 98.6% (928.0 µmol kg−1). For the rest of the adsorbents, the adsorption was also around 100% when the lowest concentrations of CFX were added, but the percentage dropped sharply when the highest dose of the antibiotic was incorporated. Adsorption data fitted well to the Langmuir and Freundlich models, with R2 greater than 0.9. Regarding desorption, the materials that presented the lowest values when the highest concentration of CFX was added were wood ash (0%) and mussel shell (2.1%), while pine bark and eucalyptus leaves presented the highest desorption (26.6% and 28.6%, respectively). Therefore, wood ash and mussel shell could be considered adsorbents with a high potential to be used in problems of environmental contamination by CFX.

scholarly journals Adsorption, desorption and fractionation of As(V) on untreated and mussel shell-treated granitic material

Solid Earth ◽  
2015 ◽  
Vol 6 (1) ◽  
pp. 337-346 ◽  
Author(s):  
N. Seco-Reigosa ◽  
L. Cutillas-Barreiro ◽  
J. C. Nóvoa-Muñoz ◽  
M. Arias-Estévez ◽  
E. Álvarez-Rodríguez ◽  
...  
Keyword(s):  
Food Chain ◽  
Soluble Fraction ◽  
Mussel Shell ◽  
Weakly Bound ◽  
Retention Capacity ◽  
Adsorption Data ◽  
Water Courses ◽  
Ph Range ◽  
Adsorption Desorption ◽  
Langmuir And Freundlich Models

Abstract. As(V) adsorption and desorption were studied on granitic material, coarse and fine mussel shell and granitic material amended with 12 and 24 t ha−1 fine shell, investigating the effect of different As(V) concentrations and different pH as well as the fractions where the adsorbed As(V) was retained. As(V) adsorption was higher on fine than on coarse shell. Mussel shell amendment increased As(V) adsorption on granitic material. Adsorption data corresponding to the unamended and shell-amended granitic material were satisfactory fitted to the Langmuir and Freundlich models. Desorption was always <19% when the highest As(V) concentration (100 mg L−1) was added. Regarding the effect of pH, the granitic material showed its highest adsorption (66%) at pH <6, and it was lower as pH increased. Fine shell presented notable adsorption in the whole pH range between 6 and 12, with a maximum of 83%. The shell-amended granitic material showed high As(V) adsorption, with a maximum (99%) at pH near 8, but decreased as pH increased. Desorption varying pH was always <26%. In the granitic material, desorption increased progressively when pH increased from 4 to 6, contrary to what happened to mussel shell. Regarding the fractionation of the adsorbed As(V), most of it was in the soluble fraction (weakly bound). The granitic material did not show high As(V) retention capacity, which could facilitate As(V) transfer to water courses and to the food chain in case of As(V) compounds being applied on this material; however, the mussel shell amendment increased As(V) retention, making this practice recommendable.

scholarly journals Agro-industrial fruit co-products in Colombia, their sources and potential uses in processed food industries: a review

2015 ◽  
Vol 68 (2) ◽  
pp. 7729-7742 ◽  
Author(s):  
Miguel Ángel Alarcón García ◽  
Jairo Humberto López Vargas ◽  
Diego Alonso Restrepo Molina
Keyword(s):  
Antioxidant Activity ◽  
Environmental Pollution ◽  
Dietary Fiber ◽  
Natural Antioxidant ◽  
Processed Foods ◽  
Processed Food ◽  
Food Industries ◽  
High Interest ◽  
Food Matrices ◽  
By Products

Fruit agribusinesses generate large amounts of by-products with diverse characteristics that are inherent to the fruits from which they come, which are a source of great use potential because their compositions include molecules that are currently of high interest (antioxidants and dietary fiber). It is clear that, without correct handling and disposal, theses fruits present a problem due to the environmental pollution that large quantities of residues can generate. Although there are varied uses for agro-industrial co-products, this review focused on the potential uses that co-products could have in different processed food matrices. In this sense, this paper led to the revelation that one of the principal objectives of the reviewed research was to condition co-products for use in processed foods in an attempt to take advantage of the bio-active compounds they contain, principally the natural antioxidant activity, which especially enjoys acceptance by consumers of processed foods.

scholarly journals Adsorption, desorption and fractionation of As(V) on untreated and mussel shell-treated granitic material

2014 ◽  
Vol 6 (2) ◽  
pp. 3419-3444
Author(s):  
N. Seco-Reigosa ◽  
L. Cutillas-Barreiro ◽  
J. C. Nóvoa-Muñoz ◽  
M. Arias-Estévez ◽  
E. Álvarez-Rodríguez ◽  
...  
Keyword(s):  
Water Pollution ◽  
Food Chain ◽  
Soluble Fraction ◽  
Mussel Shell ◽  
Weakly Bound ◽  
Retention Capacity ◽  
Adsorption Data ◽  
Ph Range ◽  
Adsorption Desorption ◽  
Langmuir And Freundlich Models

Abstract. As(V) adsorption and desorption were studied on granitic material, coarse and fine mussel shell, and granitic material amended with 12 and 24 t ha−1 fine shell, investigating the effect of different As(V) concentrations and different pH, as well as the fractions where the adsorbed As(V) was retained. As(V) adsorption was higher on fine than on coarse shell. Mussel shell amendment increased As(V) adsorption on granitic material. Adsorption data corresponding to the un-amended and shell-amended granitic material were satisfactory fitted to the Langmuir and Freundlich models. Desorption was always < 19% when the highest As(V) concentration (100 mg L−1) was added. Regarding the effect of pH, the granitic material showed its highest adsorption (66%) at pH < 6, and it was lower as pH increased. Fine shell presented notable adsorption in the whole pH range between 6 and 12, with a maximum of 83%. The shell-amended granitic material showed high As(V) adsorption, with a maximum (99%) at pH near 8, but decreasing as pH increased. Desorption varying pH was always < 26%. In the granitic material, desorption increased progressively when pH increased from 4 to 6, contrary to what happened to mussel shell. Regarding the fractionation of the adsorbed As(V), most of it was in the soluble fraction (weakly bound). Globally, the granitic material did not show high As(V) retention capacity, which implies risks of water pollution and transfer to the food chain; however, the mussel shell amendment increased As(V) retention, making this practice recommendable.

scholarly journals Impact of Estrogens Present in Environment on Health and Welfare of Animals

Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 2152
Author(s):  
Konrad Wojnarowski ◽  
Paweł Podobiński ◽  
Paulina Cholewińska ◽  
Jakub Smoliński ◽  
Karolina Dorobisz
Keyword(s):  
Environmental Impact ◽  
Environmental Pollution ◽  
Animal Welfare ◽  
Environmental Contamination ◽  
Physiological Condition ◽  
Negative Consequences ◽  
Natural Processes ◽  
Neoplastic Processes ◽  
Potential Sources ◽  
Sources Of Contamination

Nowadays, there is a growing interest in environmental pollution; however, knowledge about this aspect is growing at an insufficient pace. There are many potential sources of environmental contamination, including sex hormones—especially estrogens. The analyzed literature shows that estrone (E1), estradiol (E2), estriol (E3), and synthetic ethinyloestradiol (EE2) are the most significant in terms of environmental impact. Potential sources of contamination are, among others, livestock farms, slaughterhouses, and large urban agglomerations. Estrogens occurring in the environment can negatively affect the organisms, such as animals, through phenomena such as feminization, dysregulation of natural processes related to reproduction, lowering the physiological condition of the organisms, disturbances in the regulation of both proapoptotic and anti-apoptotic processes, and even the occurrence of neoplastic processes thus drastically decreasing animal welfare. Unfortunately, the amount of research conducted on the negative consequences of their impact on animal organisms is many times smaller than that of humans, despite the great richness and diversity of the fauna. Therefore, there is a need for further research to help fill the gaps in our knowledge.

By Products from Food Industries: Utilization for Bioinsecticide Production

1994 ◽  
pp. 1020-1022 ◽  
Author(s):  
Iracema O. de Moraes ◽  
Deise M. F. Capalbo ◽  
Regina O. de Moraes
Keyword(s):  
Food Industries ◽  
By Products

By-Products of the Nut and Peanut Agro-Industry as Sources of Phytochemicals Suitable for the Nutraceutical and Food Industries

2018 ◽  
pp. 201-220
Author(s):  
Alma Angelica Vazquez-Flores ◽  
José Alberto Núñez-Gastélum ◽  
Emilio Alvarez-Parrilla ◽  
Abraham Wall-Medrano ◽  
Joaquĺn Rodrigo-Garcĺa ◽  
...  
Keyword(s):  
Food Industries ◽  
By Products

scholarly journals Analysis of Cr(III) ions adsorption on the surface of algae: implications for the removal of heavy metal ions from water

2021 ◽  
Vol 4 (10(112)) ◽  
pp. 14-23
Author(s):  
Zhadra Tattibayeva ◽  
Sagdat Tazhibayeva ◽  
Wojciech Kujawski ◽  
Bolatkhan Zayadan ◽  
Kuanyshbek Мusabekov ◽  
...  
Keyword(s):  
Cell Surface ◽  
Metal Ions ◽  
Functional Groups ◽  
Ζ Potential ◽  
Adsorption Data ◽  
Abnormal Increase ◽  
Ph Range ◽  
Langmuir And Freundlich Models ◽  
Phosphate Groups ◽  
Comprehensive Study

For purposeful control of the adsorption process, a comprehensive study of the properties of the original cells and the effect of metal ions on them is necessary. In this regard, the features of the adsorption of Cr(III) ions on the cell surface of Spirulina platensis algae were studied. FTIR spectroscopy revealed that the main functional groups responsible for the binding of Cr(III) ions are carboxyl, hydroxyl, amino, and phosphate groups on the surface of algae. The adsorption data were processed using the Langmuir and Freundlich models. It is shown that the maximum adsorption of Cr(III) ions on the surface of algae cells is 31.25 mg/g. The Freundlich constant 1/n is 0.65. The study of the effect of the concentration of Cr(III) ions on the Zeta-potential of algae cells revealed an abnormal increase in the negative value of the ζ – potential at 10–5 mol/L, caused by the release of an additional amount of anionic functional groups to the surface. A further increase in the concentration of Cr(III) ions in the algae suspension leads to a decrease in the ζ – potential and recharge of the surface at C>10–2 mol/L. It was found that the adsorption of Cr(III) ions also affects the morphology of the cell surface. If before contact with Cr(III) ions, the surface of algae cells is represented as a uniform green grid, after adsorption of Cr(III) ions, the surface becomes green-brown, with swollen spirals. The study of the effect of pH on the adsorption and desorption processes shows an increase in the desorption of Cr(III) ions from the surface of algae during acidification of the medium. The adsorption reaches a maximum value in the pH range of 6–7. In the region of optimal Cr(III)/biosorbent ion ratios, the recovery rate of Cr(III) reaches 98.5–99.3 %.

scholarly journals Active Compound Identification in Extracts of N. lappaceum Peel and Evaluation of Antioxidant Capacity

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Mariel Monrroy ◽  
Onix Araúz ◽  
José Renán García
Keyword(s):  
Antioxidant Capacity ◽  
Antioxidant Properties ◽  
Gas Chromatography Mass Spectrometry ◽  
Total Phenolic ◽  
Phytochemical Analysis ◽  
Anthocyanin Content ◽  
Compound Identification ◽  
Total Anthocyanin ◽  
Food Industries ◽  
By Products

Nephelium lappaceum and its by-products have great potential in the agricultural, pharmaceutical, and food industries. Some studies have shown that N. lappaceum by-products exhibit antimicrobial, antioxidant, antidiabetic, and anticancer properties. However, studies focused on identifying these compounds are rare. The availability of polyphenolic compounds can vary according to environmental conditions, soil, plant variety, and agronomic management. Therefore, in this study, the active compounds in extracts of the N. lappaceum peel were identified, and their antioxidant properties were evaluated using various extraction solvents and both ultrasonic and boiling extraction techniques. The chemical characterization of the N. lappaceum peel exhibited carbohydrate and reducing sugar contents of 12 and 2%, respectively. Phytochemical analysis indicated the presence of flavonoids, tannins, terpenes, and steroids. The total phenolic and flavonoid contents and total antioxidant capacity were the highest in the hydroethanolic extract obtained by ultrasound, with values of 340 mg gallic acid equivalents g−1, 76 mg quercetin equivalents g−1, and 2.9 mmol of Trolox equivalents g−1, respectively. Contrarily, the total anthocyanin content was higher in the acid extract obtained by ultrasound, with a value of 0.7 mg cyanidin-3-O-glucoside equivalents g−1. A total of 18 compounds—including hydroxybenzene, phenolic acid, flavonoids, fatty acids (saturated, unsaturated, and ester), vitamin, arenecarbaldehyde, and phthalate—were identified for the first time in the N. lappaceum peel using gas chromatography-mass spectrometry. The identified compounds have been previously isolated from other plants and reportedly exhibit anticancer, anti-inflammatory, antimicrobial, and antioxidant activities. Thus, the N. lappaceum peel was shown to be a potential source of bioactive compounds of immense importance in the pharmacological and food industries.

scholarly journals Four-Legged Recycling Machines

1972 ◽  
Vol 1 (01) ◽  
pp. 129-138
Author(s):  
Fred J. Benson ◽  
Walter P. Stinson
Keyword(s):  
Environmental Pollution ◽  
Waste Disposal ◽  
Waste Recycling ◽  
American Industry ◽  
By Products

Society's growing concern over environmental pollution has forced American industry to reevaluate its methods of waste disposal. No longer is it socially acceptable or, in many cases, legal to dump untreated by-products into the air, on the land, or into the rivers. Industries have developed various methods for complying with pollution legislation and social demands. Paramount among the programs now in effect are detoxification facilities and waste recycling programs.

scholarly journals Chromium VI and Fluoride Competitive Adsorption on Different Soils and By-Products

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 748
Author(s):  
Ana Quintáns-Fondo ◽  
Gustavo Ferreira-Coelho ◽  
Manuel Arias-Estévez ◽  
Juan Carlos Nóvoa-Muñoz ◽  
David Fernández-Calviño ◽  
...  
Keyword(s):  
Pine Bark ◽  
Competitive System ◽  
Chromium Vi ◽  
Batch Type ◽  
System A ◽  
The Individual ◽  
Polluted Waters ◽  
By Products ◽  
Different Soils ◽  
Oak Ash

Chromium (as Cr(VI)) and fluoride (F−) are frequently found in effluents from different industrial activities. In cases where these effluents reach soil, it can play an important role in retaining those pollutants. Similarly, different byproducts could act as bio-adsorbents to directly treat polluted waters or to enhance the purging potential of soil. In this work, we used batch-type experiments to study competitive Cr(VI) and F− adsorption in two different soils and several kinds of byproducts. Both soils, as well as mussel shell, oak ash, and hemp waste showed higher adsorption for F−, while pyritic material, pine bark, and sawdust had a higher affinity for Cr(VI). Considering the binary competitive system, a clear competition between both elements in anionic form is shown, with decreases in adsorption of up to 90% for Cr(VI), and of up to 30% for F−. Adsorption results showed better fitting to Freundlich’s than to Langmuir’s model. None of the individual soils or byproducts were able to adsorbing high percentages of both pollutants simultaneously, but it could be highly improved by adding pine bark to increase Cr(VI) adsorption in soils, thus drastically reducing the risks of pollution and deleterious effects on the environment and on public health.

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