The study aimed to prepare a biocomposite containing Yarrowia lipolytica yeast cells with magnetic properties. work proposes the use of this as sorbent for removal organic pollutants like methylene blue from liquids. sorption process was conducted in periodic through which different parameters were analyzed such initial concentration (50–250 mg/dm3), time (0.167–24 h), and temperature (25–40 °C). To fit experimental data theoretical models, Langmuir, Freundlich, Temkin, Dubinin–Radushkevich...

Abstract A series of poly(vinyl alcohol) (PVA) based liquid compositions with addition zinc oxide, silver and copper nanoparticles has been prepared. The also contained other consistency-forming organic components. physico-chemical properties the products have determined. Their pH density assessed. Also, size defined using a dynamic light scattering technique. were subjected to XRD, FT-IR microscopic analysis as well. Thanks incorporation both metal oxide metallic nanoparticles, it was...

This research shows a method of elimination methylene blue from aqueous solutions using raphia fiber. Sorption was applied in bath system and the with mixing online measurement. The obtained data equilibrium can suggest adjusting sorption isotherm model calculation maximum capacities. Langmuir has highest correlation coefficient R2 which that adsorption process on fibers is monolayer process. On other hand, Freundlich also well fitted, may indicate adapted, while measurement, matching factor...

Findings of more efficient energy recovery methods are focused on composite fuels consisting coal, water, and waste materials. The use such slurry has enormous environmental benefits due to the potential for utilization low emissions harmful oxides atmosphere during combustion process. In this study, we report effect glycerol rheological properties coal-water fuel (CWS). addition CWS increases viscosity (from 45.5 184.2 mPa·s at a shear rate 100 rpm) density 1.08 1.11 g/cm3) these...

This study investigated the possibility of obtaining a raphia-microorganism composite for removing lead ions from aqueous solutions using immobilized yeast cells Saccharomyces cerevisiae on Raphia farinifera fibers. The obtained biocomposite was characterized scanning electron microscopy and Fourier transform infrared spectroscopy. Studies were conducted to determine influence contact time, initial concentration Pb(II), pH allowed selection nonlinear equilibrium kinetic models. results...

The paper presents the ability of coconut fibers and its modification made with Saccharomyces cerevisiae yeast cells to remove Pb(II) ions by adsorption process. Sorbents have been characterized SEM-EDS, FTIR, CHN, BET analysis. Maximum was equal 99.32% for concentration 1000 mg/dm3 unmodified adsorbent 99.87% fiber containing cells. sorption capacity material 73.627 mg/g 63.935 modified one highest metal ion (3000 mg/dm3). lead on both materials has best described Langmuir isotherm what...

Recently there has been an increase in consumption of meat, especially poultry. This results the quantity waste, including waste feathers. Waste from meat industry are hazardous, which must be disposed accordance with law. Wastes normally consist valuable elements such as phosphorus, calcium, potassium, magnesium (macronutrients), and iron, copper, zinc, manganese (micronutrients), after suitable processing can used for purposes fertilization. The paper presents thermal treatment feathers...

Abstract Currently, pathogenic microorganisms are becoming more active in public utility areas like parking lots and waste shelters due to the accumulation of organic waste. This uncontrolled leads decay, altering its composition presenting a microbiological risk health. Additionally, it emits unpleasant odors containing chemicals that irritate mucous membranes, causing discomfort nose, throat, eyes by stimulating trigeminal nerve. These can have various negative effects on both quality life...

This study investigated the possibility of using spent kind biomass Pseudomonas putida CA-3 and Zobelella denitrificans MW1 obtained after pilot-scale production polyhydroxyalkanoates (PHAs) as a biosorbent for bioremediation aqueous solutions containing toxic cadmium lead ions. The material was characterized by means scanning electron microscopy, Fourier-transformed infrared spectroscopy, nuclear magnetic resonance spectroscopy amino acid profiling. To check sorption capacity against Pb Cd...

The paper presents the possibility of obtaining poly(vinyl alcohol)-based coatings containing zinc oxide nanoparticles. research part has been divided into three steps. At beginning, nanometric was produced by hydrothermal method and its physicochemical properties were characterized. second included creation a reference composition. Next, independent variables determined: mixing temperature composites, concentration glycerine that could affect products. In last stage, compositions tested for...

The presented study investigated the use of Phaffia rhodozyma cells immobilized in natural biopolymer for improved bioremediation toxic chromium compounds from aqueous solutions. Cells were immobilised shape spheres (PRS) and flat coatings (PRC) with sodium alginate. process was conducted through sorption reduction Cr(VI). biosorption best described by Langmuir isotherm model (R2= 0.982, 0.985, 0.992 Free cells, PRS PRC, respectively) kinetics, Weber-Morris unmodified pseudo-second order...

The study proposed the use of aspen wood sawdust and biochar derived from this for removal Pb(II), Cd(II), Cr(VI) ions soil in systems containing single metals as well a mixture all studied metals. effectiveness applied sorbents was compared with sorptive properties activated carbon. results showed that tested materials reduced metal content soil, obtained able to sorb lead, cadmium, chromium both systems. influence type sorbent, its dose, process duration, impact on efficiency sorption...

Thermal utilization of mixtures bone waste The results a research related to the physico - chemical properties mixture and their ingredients have been presented. was made up from waste: bovine bones, pork sludge meal. content individual in selected on basis heat combustion amount produced meat processing plant. has determined by calorimeter, phosphorus spectrophotometric method, calcium titration phase composition X ray diffraction. investigations confirmed that bones highest 17 MJ/kg...

Recently, the increased consumption of poultry meat in EU has been observed. Short cycle production allows adjusting level to demand. With increase amount generated waste that be disposed because they pose a risk environment also increases. The work presents possibility produce mixture feathers, meat-bone meal and litter can used for energy purposes (alternative fuel). Moreover, composition ashes after combustion will similar phosphorus-potassium fertilizers offered sale. resulting granules...

Attempts to obtain stable phenol-formaldehyde resins with silver nanoparticles embedded in their structure were performed the study. Silver formed situ process of obtaining resole resins. The conditions formation allowed for effectively reducing ions and stabilising creation nanoparticles. Tannic acid was used as a substance gelatin served supporting stabiliser. possibility using obtained product wood binder studied. It confirmed that adhesive properties are strong enough bind blocks pine...