Adsorption of diclofenac onto different biochar microparticles: Dataset – Characterization and dosage of biochar

Due to its wide occurrence in water resources and toxicity, pharmaceuticals and personal care products are becoming an emerging concern throughout the world. Application of residual/waste materials for water remediation can be a good strategy in waste management as well as in waste valorization. Here in, this dataset provides information on biochar application for the removal of emerging contaminant, diclofenac from water matrices.The data presented here is an extension of there search article explaining the mechanisms of adsorption diclofenac on biochars(Lonappan et al., 2017[1]). This data article provides general information on the surface features of pine wood and pig manure biochar with the help of SEM and FTIR data. This dataset also provides information on XRD profiles of pine wood and pig manure biochars. In addition, different amounts of biochars were used to study the removal of a fixed concentration of diclofenac and the data is provided with this data set

Meat quality of Tunisian local breed lambs supplemented with olive pomace blocks

Animal feed cost in Tunisia is extremely high and the search for alternative solutions is imperative. In this study, we tested the supplementation of weaned lambs with olive pomace-based blocks to evaluate their effect on meat quality and profitability of lamb fattening. For this purpose, we divided sixteen weaned male lambs of the "Noir de Thibar" breed into two distinct groups of 8 lambs each. The experiment was conducted over a period of 3 months. Each group received 700 g of oat hay/lamb/day and a specific feed supplement: Control group (group C) received 500 g of commercial feed concentrate/lamb/day during the 3 months of the fattening experiment. The set of lambs supplemented with feed blocks (set B) received 200 g of feed blocks containing 32% olive meal and 300 g of feed concentrate/lamb/day. The carcass yield of the control lambs (C) was higher than that of the lambs in the other group. The lambs' consumption of feed blocks resulted in a decrease in the redness and yellowing of the meat they produced. Supplementation with feed blocks as well as feed restriction reduced the concentration of lauric and myristic acids (saturated fatty acids) in the intramuscular fat of the lambs compared to the control group, and lambs fed with feed blocks based on oilcake produced meat with high percentage of oleic acid (monounsaturated fatty acid) compared to lambs consuming contaminated feed concentrates. Keywords: Olive cake, feed blocks, Carcass characteristics, Meat quality, Intramuscular fatty acid

Green synthesis of novel biocomposites from treated cellulosic fibers and recycled bio-plastic polylactic acid

This study investigated mechanical properties of biocomposites developed from recycled polylactic acid (PLA) from packaging industry and treated cellulosic fibers from pulp and paper solid waste. Microwave and enzymatic treatments were used for extraction and surface modification of hydrophilic cellulosic fibers. Enzymatic treatment was specifically performed for activation of hydroxyl groups and improvement of adhesion between matrix and fibers including controlling the length of cellulosic fibers with size reduction of around 50% (142 and 127 mm for primary and mixed biosolids, respectively) as compared to microwave treatment. Microwave treatment produced cellulosic fibers of 293 and 341 mm, for primary and mixed biosolids, respectively. Mechanical properties of biocomposites with 2% (w/w) of treated cellulosic fibers (Young's Modulus 887.83 MPa with tensile strain at breakpoint of 7.22%, tensile stress at yield 41.35 MPa) was enhanced in comparison to the recycled PLA (Young's Modulus 644.47 ± 30.086 MPa with tensile strain at breakpoint of 6.01 ± 0.83%, tensile stress at yield of 29.49 ± 3.64 MPa). Scanning electron microscopy revealed size reduction of cellulosic fibers. X-ray diffraction and Fourier transform infrared spectroscopy confirmed strong mechanical properties of novel biocomposites.The authors are sincerely thankful to the Natural Sciences and Engineering Research Council of Canada (Discovery Grant 355254 and NSERC CRD Grant), and CRIBIQ for financial support. We would like to thank Mr. R. Fortin and Colin Jacob Vaillancourt from Gaudreau Environment for providing rPLA samples. Likewise, the support of Ozymes Inc. is equally appreciated for valuable comments during the experimental planning from industrial perspective. Financial assistance by the ‘Fonds de recherche du Quebec- Nature et technologies (FRQNT)’ and INRS-ETE has been thankfully acknowledged by K Hegde.info:eu-repo/semantics/publishedVersio

Pine-wood derived nanobiochar for removal of carbamazepine from aqueous media: Adsorption behavior and influential parameters

In recent years, application of biochar for removal of pollutants from aqueous solutions has been of interest due to favorable physicochemical properties and availability of feedstock. However, adsorption behavior has been reported only for raw and micro biochar particles and taking advantage of biochar nanoparticles, which offer superior specific surface area, did not receive any attention. The objective of this study was to investigate the adsorption efficiency of produced nanobiochar from pinewood. For this purpose, removal of carbamazepine (CBZ), a globally prescribed pharmaceutical, at very low concentrations (0.5–20 ppb) on as-produced nanobiochar with average particle size of 60 nm was studied. The results showed that nanobiochar can remove up to 95% of CBZ (74 μg CBZ/g nanobiochar) after 3 h contact time. Adsorption of CBZ on nanobiochar followed Freundlich isotherm model (R2= 0.9822) and pseudo-second order kinetic model (R2= 0.9994). It was found that increasing pH from 3 to 8 can enhance the adsorption efficiency by 2.3 folds. Also, due to the presence of surfactant in wastewater, the addition of Tween 80 as a model surfactant was studied in the range of 0 to 1 (Tween 80 to CBZ molar ratio) and the results showed that adsorption efficiency can be enhanced by 57%. Thus, the nanobiochar obtained from pinewood residues can be a promising sorbent for micropollutants

Adsorption of diclofenac onto different biochar microparticles: Dataset – Characterization and dosage of biochar

Due to its wide occurrence in water resources and toxicity, pharmaceuticals and personal care products are becoming an emerging concern throughout the world. Application of residual/waste materials for water remediation can be a good strategy in waste management as well as in waste valorization. Here in, this dataset provides information on biochar application for the removal of emerging contaminant, diclofenac from water matrices.The data presented here is an extension of there search article explaining the mechanisms of adsorption diclofenac on biochars(Lonappan et al., 2017[1]). This data article provides general information on the surface features of pine wood and pig manure biochar with the help of SEM and FTIR data. This dataset also provides information on XRD profiles of pine wood and pig manure biochars. In addition, different amounts of biochars were used to study the removal of a fixed concentration of diclofenac and the data is provided with this data set

Caractérisation nutritionnelle des blocs multi-nutritionnels à base de grignons d’olives

Olive cake-feed blocks were manually made to assess their nutritional properties. They were prepared using: olive cake (32%), processed barley (25%), wheat bran (15%), soybean meal (10%), salt (5%), vitamin and mineral premix (3%), and quicklime (10%). No secondary metabolites were detected in our handmade feed blocks nor any antioxydative activity. Organic matter digestibility is low (49.2%) albeit the level of metabolizable energy is considerable (7 MJ/kg DM). Gas production kinetics were measured in vitro for 48 h in order to simulate ruminal gas production following feed block consumption. Olive cake-feed blocks may substitute expensive concentrates and reduce methane emission by ruminants. Keywords: Olive cake-feed blocks, Chemical composition, Gas production.Des blocs multi-nutritionnels à base de grignons d’olives étaient fabriqués manuellement en vue d’étudier leurs caractéristiques nutritionnelles. Ces blocs sont composés de : grignons d’olives (32%), orge broyé (25%), son de blé (15%), tourteaux de soja (10%), sel alimentaire (5%), un complément de minéraux et de vitamines (3%), et enfin de la chaux vive (10%) comme fixateur. L’analyse de la composition chimique des blocs alimentaires fabriqués a révélé qu’ils sont dépourvus de métabolites secondaires et par conséquent ne possèdent nullement d’action antioxydante. La digestibilité de la matière organique est médiocre (49,2%) mais le taux de l’énergie métabolisable est bien élevé (7 MJ/kg MS). Enfin, la cinétique de la production des gaz émis suite à la consommation des blocs par les ovins était simulée in vitro durant 48 h puis modélisée. Les blocs multi-nutritionnels formulés à base de grignons d’olives pourraient probablement réduire l’émission de méthane (gaz à effet de serre) par les ruminants et pourraient remplacer des aliments plus coûteux dans l’alimentation des petits ruminants. Mots-clés : Blocs multi-nutritionnels, Grignons d’olives, Composition chimique, Production des gaz

Biodegradation of polycyclic aromatic hydrocarbons (PAHs) by fungal enzymes: A review

Polycyclic aromatic hydrocarbons (PAHs) are a large group of chemicals. They represent an important concern due to their widespread distribution in the environment, their resistance to biodegradation, their potential to bioaccumulate and their harmful effects. Several pilot treatments have been implemented to prevent economic consequences and deterioration of soil and water quality. As a promising option, fungal enzymes are regarded as a powerful choice for degradation of PAHs. Phanerochaete chrysosporium, Pleurotus ostreatus and Bjerkandera adusta are most commonly used for the degradation of such compounds due to their production of ligninolytic enzymes such as lignin peroxidase, manganese peroxidase and laccase. The rate of biodegradation depends on many culture conditions, such as temperature, oxygen, accessibility of nutrients and agitated or shallow culture. Moreover, the addition of biosurfactants can strongly modify the enzyme activity. The removal of PAHs is dependent on the ionization potential. The study of the kinetics is not completely comprehended, and it becomes more challenging when fungi are applied for bioremediation. Degradation studies in soil are much more complicated than liquid cultures because of the heterogeneity of soil, thus, many factors should be considered when studying soil bioremediation, such as desorption and bioavailability of PAHs. Different degradation pathways can be suggested. The peroxidases are heme-containing enzymes having common catalytic cycles. One molecule of hydrogen peroxide oxidizes the resting enzyme withdrawing two electrons. Subsequently, the peroxidase is reduced back in two steps of one electron oxidation. Laccases are copper-containing oxidases. They reduce molecular oxygen to water and oxidize phenolic compounds.Fil: Kadri, Tayssir. Université du Québec a Montreal; CanadáFil: Rouissi, Tarek. Université du Québec a Montreal; CanadáFil: Brar, Satinder Kaur. Université du Québec a Montreal; CanadáFil: Cledón, Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina. Université du Québec a Montreal; CanadáFil: Sarma, Saurabhjyoti. Université du Québec a Montreal; CanadáFil: Verma, Mausam. Université du Québec a Montreal; Canad

Biodegradation of aflatoxin B1 with cell-free extracts of Trametes versicolor and Bacillus subtilis

Aflatoxin B1 (AFB1) is one of the most common contaminants of poultry feed and has been linked to adverse effects on animal health and productivity. In this study, the degradation of AFB1 was studied with cell-free extracts (CFE) of Trametes versicolor and Bacillus subtilis using High-Performance Liquid chromatography (HPLC). CFE from B. subtilis and T. versicolor gave 60% and 34% of AFB1 degradation respectively, while heat-inactivated extracts showed no degradation. By-products obtained at the end of AFB1 degradation were analyzed by Liquid Chromatography with tandem mass spectrometry (LC-MS/MS). After 96 h of incubation, by-products with lower m/z values were obtained with CFE from B. subtilis as compared to that from T. versicolor, indicating a higher degradation efficiency of the former. Additionally, the detection of a by-product which could correspond to AFB1-8,9 dihydrodiol - a less toxic derivative of AFB1 - after 72 and 96 h of incubation with CFE from B. subtilis, could indicate the simultaneous detoxification along with degradation of AFB1 by B. subtilis CFE.Fil: Suresh, Gayatri. Institut National de Recherche Scientifique; CanadáFil: Cabezudo, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Procesos Biotecnológicos y Químicos Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Procesos Biotecnológicos y Químicos Rosario; ArgentinaFil: Pulicharla, Rama. Institut National de Recherche Scientifique; CanadáFil: Cuprys, Agnieszka. Institut National de Recherche Scientifique; CanadáFil: Rouissi, Tarek. Institut National de Recherche Scientifique; CanadáFil: Brar, Satinder Kaur. Institut National de Recherche Scientifique; Canadá. York University. Lassonde School of Engineering. Department of Civil Engineering; Canad

Pine-wood derived nanobiochar for removal of carbamazepine from aqueous media: Adsorption behavior and influential parameters

In recent years, application of biochar for removal of pollutants from aqueous solutions has been of interest due to favorable physicochemical properties and availability of feedstock. However, adsorption behavior has been reported only for raw and micro biochar particles and taking advantage of biochar nanoparticles, which offer superior specific surface area, did not receive any attention. The objective of this study was to investigate the adsorption efficiency of produced nanobiochar from pinewood. For this purpose, removal of carbamazepine (CBZ), a globally prescribed pharmaceutical, at very low concentrations (0.5–20 ppb) on as-produced nanobiochar with average particle size of 60 nm was studied. The results showed that nanobiochar can remove up to 95% of CBZ (74 μg CBZ/g nanobiochar) after 3 h contact time. Adsorption of CBZ on nanobiochar followed Freundlich isotherm model (R2= 0.9822) and pseudo-second order kinetic model (R2= 0.9994). It was found that increasing pH from 3 to 8 can enhance the adsorption efficiency by 2.3 folds. Also, due to the presence of surfactant in wastewater, the addition of Tween 80 as a model surfactant was studied in the range of 0 to 1 (Tween 80 to CBZ molar ratio) and the results showed that adsorption efficiency can be enhanced by 57%. Thus, the nanobiochar obtained from pinewood residues can be a promising sorbent for micropollutants

DataSheet1_Immobilized cold-active enzymes onto magnetic chitosan microparticles as a highly stable and reusable carrier for p-xylene biodegradation.PDF

Stability and reusability properties are the two most important factors that determine an enzyme’s application in industry. To this end, cold-active crude enzymes from a psychrophile (xylene monooxygenase (XMO) and catechol 1,2-dioxygenase (C1,2D) were immobilized on magnetic chitosan microparticles for the first-time using glutaraldehyde as a linker. The potential application of enzyme-loaded magnetic particles to remove and detoxify dissolved p-xylene from water confirmed the synergistic mechanism of degradation for in-situ bioremediation in soil and water. Immobilization was optimized based on four variables, such as magnetic particle (MPs), chitosan, glutaraldehyde, and enzyme concentrations. The immobilized enzymes were characterized by Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscope (SEM). The immobilized enzymes showed improved pH tolerance ranging from 4.0 to 9.0, better temperature stability ranging from 5 to 50, higher storage stability (∼70% activity after 30 days of storage), and more importantly, reusability (∼40% activity after 10 repetitive cycles of usage) compared to their free form. Also, the immobilization of enzymes increased the effectiveness of the enzymatic treatment of p-xylene in soil (10,000 mg/kg) and water (200 mg/L) samples. As a result of the superior catalytic properties of immobilized XMO and C1,2D, they offer great potential for in situ or ex-situ bioremediation of pollutants in soil or water.</p