Bioremediation potential of waste biomaterials originating from coastal Zostera marina L. meadows for polluted aqueous media with industrial effluents

Metal ions present in waste samples, industrial effluents, acid mines and other aqueous media constitute a serious challenge in different human activities. Solvent extraction a technique for preconcentration, separation and identification of trace amount of metal ions coupled with multivariate chemometric technique was used for the determination of Fe(II) and Cr(III) from solutions in the presence of bis(salicylidene)ethylenediamine (SALEN). The influence of main extraction variables affecting the extraction efficiency was simultaneously studied and regression model equations illustrating the relationship between variables predicted. The extraction parameters (time of extraction, acid concentration, ligand concentration, temperature and metal concentration) were optimized using experimental designs with the contributions of the various parameters to extraction of the metal ions bound to the complexone evaluated using SPSS19.0 software. The statistically determined simulated models for the parameters were R2 = 0.946, 0.727, 0.793, 0.53, 0.53, 1.000 and F- values of 70.400, 13. 285, 15.348, 4.646 and 2.569×105 respectively for time of extraction, acid concentration, ligand concentration, temperature and metal concentration for Cr (III). For Fe (II), R2 = 0.243, 0.371, 0.519, 0.446, 1.000 and F-values of 0.964, 2.953, 4.310, 3.216 and 2.516×105 for time of extraction, acid concentration, ligand concentration, temperature and metal concentration respectively. The level of significance of the models as predicted was both lower than 5% making it feasible, efficient, reproducible and accurate. This means that metal ions at the conditions stated could be removed from waste samples, industrial effluents, acid mines and other aqueous media with extension in industrial scale application.

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Visible Light Induced Enhanced Photocatalytic Degradation of Industrial Effluents (Rhodamine B) in Aqueous Media Using TiO2Nanoparticles

Journal of Nanomaterials ◽

10.1155/2016/4396175 ◽

2016 ◽

Vol 2016 ◽

pp. 1-13 ◽

Cited By ~ 20

Author(s):

J. O. Carneiro ◽

A. P. Samantilleke ◽

P. Parpot ◽

F. Fernandes ◽

M. Pastor ◽

...

Keyword(s):

Visible Light ◽

Rhodamine B ◽

Colloidal Stability ◽

Titanium Dioxide Nanoparticles ◽

Aqueous Media ◽

Research Work ◽

Industrial Effluents ◽

Intermediate Compound ◽

X Ray Diffraction ◽

Textile Materials

In recent years, new textile materials have been developed through the use of nanotechnology-based tools. The development of textile surfaces with self-cleaning properties has a large combined potential to reduce the environmental impact related to pollution. In this research work, three types of textiles substrates (cotton, Entretela, and polylactic acid (PLA)) were functionalized with titanium dioxide nanoparticles (TiO2) using chemical and mechanical processes (padding). During the functionalization process, two different methods were used, both of which allowed a good fixation of nanoparticles of TiO2on textile substrates. The samples were examined for morphology and for photocatalytic properties under visible light irradiation. A study aimed at evaluating the effect of pH of the aqueous solution of TiO2nanoparticles was performed in order to promote interaction between TiO2and the dye solution rhodamine B (Rh-B). The TiO2nanoparticles were characterized by X-ray diffraction (XRD). The measurement of the zeta potential of the TiO2nanoparticle solution proved to be always positive and have low colloidal stability. Chromatography (HPLC and GC-MS) analyses confirm that oxalic acid is the intermediate compound formed during the photodegradation process.

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Host-Guest Interaction between Herbicide Oxadiargyl and Hydroxypropyl-β-Cyclodextrin

The Scientific World JOURNAL ◽

10.1155/2013/825206 ◽

2013 ◽

Vol 2013 ◽

pp. 1-6 ◽

Cited By ~ 10

Author(s):

Sofia Benfeito ◽

Tiago Rodrigues ◽

Jorge Garrido ◽

Fernanda Borges ◽

E. Manuela Garrido

Keyword(s):

Aqueous Media ◽

Industrial Effluents ◽

Ultrapure Water ◽

Buffer Solutions ◽

Water Treatment Plants ◽

Pesticide Formulations ◽

The Face ◽

Ph Buffer ◽

Environmentally Sound ◽

And Storage

In the face of a growing human population and increased urbanization, the demand for pesticides will simply rise. Farmers must escalate yields on increasingly fewer farm acres. However, the risks of pesticides, whether real or perceived, may force changes in the way these chemicals are used. Scientists are working toward pest control plans that are environmentally sound, effective, and profitable. In this context the development of new pesticide formulations which may improve application effectiveness, safety, handling, and storage can be pointed out as a solution. As a contribution to the area, the microencapsulation of the herbicide oxadiargyl (OXA) in (2-hydroxypropyl)-β-cyclodextrin (HP-β-CD) was performed. The study was conducted in different aqueous media (ultrapure water and in different pH buffer solutions). In all cases an increment of the oxadiargyl solubility as a function of the HP-β-CD concentration that has been related to the formation of an inclusion complex was verified. UV-Vis and NMR experiments allowed concluding that the stoichiometry of the OXA/HP-β-CD complex formed is 1 : 1. The gathered results can be regarded as an important step for its removal from industrial effluents and/or to increase the stabilizing action, encapsulation, and adsorption in water treatment plants.

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DEVELOPMENT OF MEMBRANE SENSORS BASED ON NEW HYBRID MATERIALS FOR THE DETERMINATION OF SULFUR AND MEDICI-NAL SUBSTANCES IN DOMESTIC AND INDUSTRIAL EFFLUENTS

Voronezh Scientific-Technical Bulletin ◽

10.12737/17006 ◽

2015 ◽

Vol 4 (4) ◽

pp. 31-32 ◽

Cited By ~ 1

Author(s):

Бобрешова ◽

O Bobreshova ◽

Денисова ◽

T Denisova ◽

Паршина ◽

...

Keyword(s):

Hybrid Materials ◽

Aqueous Media ◽

Industrial Effluents ◽

Industrial Enterprises ◽

Anesthetic Agents ◽

Medical Institutions ◽

Wide Range ◽

Touch Devices ◽

Data Portability

Developed potentiometric PD sensors with new hybrid materials based on perfluorinated sulfokationoobmennyh mem-branes Nafion and MF 4SK contain-ing nanoparticles of hydrated metal oxide (including a functionalized surface) to quant-tively determination of sulfur compounds and is widely used in medical practice, local anesthetic agents (procaine, lidoka-in) in multicomponent aqueous media. Using sensors in the similarity-tion of composite materials can significant-ly increase their Chuv-tivity to define the components that helps to increase the accuracy of determination.. Easy to use, no sample preparation, automatic pro-cessing of data portability obespe Chiva-low labor intensity analysis, which makes available to develop mye-touch devices for a wide range of control organi-zation-tions and services for environmental monitoring of water flows of medical institutions and industrial enterprises.

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First Phenol Carboxylation with CO2 on Carbon Nanostructured C@Fe-Al2O3 Hybrids in Aqueous Media under Mild Conditions

Nanomaterials ◽

10.3390/nano11010190 ◽

2021 ◽

Vol 11 (1) ◽

pp. 190

Author(s):

Feliciano Calvo-Castañera ◽

Jesús Álvarez-Rodríguez ◽

Nuria Candela ◽

Ángel Maroto-Valiente

Keyword(s):

Aqueous Media ◽

Industrial Effluents ◽

Carbon Surface ◽

Experimental Conditions ◽

Catalytic Activities ◽

Hydrophobic Behavior ◽

Comprehensive Knowledge ◽

Bet Method ◽

Carbon Coated ◽

Mild Temperature

Novel hybrid materials with integrated catalytic properties and hydrophobic response, C@Fe–Al2O3 hybrid samples, were presented and tested as catalysts for phenol reaction in aqueous solutions at atmospheric pressure and mild temperature conditions, using CO2 as a feedstock. A series of carbon-coated γ-alumina pellets (C@Fe–Al2O3) were synthesized and characterized by TGA, Brunauer–Emmett–Teller (BET) method, Raman spectroscopy, SEM, TEM, and XPS in order to get comprehensive knowledge of their properties at the nanoscale and relate them with their catalytic behavior. The results obtained correlated their catalytic activities with their carbon surface compositions. The application of these materials as active catalysts in the Kolbe–Schmitt reaction for CO2 conversion in aqueous media was proposed as an alternative reaction for the valorization of exhausts industrial effluents. In these early tests, the highest conversion of phenol was observed for the hybrid samples with the highest graphitic characteristic and the most hydrophobic behavior. Carboxylation products such as benzoic acid, p-hydroxybenzoic acid, and salicylic acid, have been identified under these experimental conditions.

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Ecofriendly Approach to Adsorption of Congo Red from Aqueous Media Using Chaff Powder from Jatropha curcas Seed (Isotherm and Kinetic Model)

10.20944/preprints201903.0274.v1 ◽

2019 ◽

Author(s):

Musa Yahaya pudza ◽

Zurina Z. Abidin

Keyword(s):

Kinetic Model ◽

Jatropha Curcas ◽

Congo Red ◽

Low Cost ◽

Aqueous Media ◽

Freundlich Isotherm ◽

Industrial Effluents ◽

Batch Process ◽

Order Kinetic ◽

Kinetics And Isotherms

The Batch process of Adsorption were conducted using Congo red (CR) as the adsorbate and Jatropha curcas seed (chaff) as the adsorbent material. Adsorption kinetics and isotherms analysis were conducted and results obtained confirmed the adsorption process as highly dependent on effects such as; contact time, adsorbent dosage, initial dye concentration and the particle sizes of adsorbate. However, the sorption equilibrium for Congo red dye unto jatropha curcas seed (chaff) was reached within 180 minutes, more so, the Adsorption efficiency was recorded at 82.05%. The process of the experimental sorption kinetics followed a pseudo-second-order kinetic model while Freundlich isotherm model was best applicable for obtaining the equilibrium of the parameters. These is an effective confirmation and validation of jatropha curcas seed (chaff) application as environmentally friendly and low-cost biomaterial for dye removal from aqueous solutions and industrial effluents.

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Application of the Natural Cellulosic Supports for the Treatment of the Industrial Effluents

The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science ◽

10.35219/mms.2021.3.08 ◽

2021 ◽

Vol 44 (3) ◽

pp. 48-55

Author(s):

Andreea BONDAREV

Keyword(s):

Aqueous Solutions ◽

Crystal Violet ◽

Dye Removal ◽

Agricultural Waste ◽

Beech Wood ◽

Aqueous Media ◽

Industrial Effluents ◽

Chemically Modified ◽

Wood Sawdust ◽

Crystal Violet Dye

Wastewater treatment is one of the most important concerns of the research studies in the field of environmental protection. The current study relates to the removal of Crystal violet dye from aqueous solutions through adsorption experiments onto natural cellulosic supports. Various waste materials that have in their composition lignocellulose are adsorbent supports with low costs for the removal of heavy metal ions and dyes from aqueous solutions. The use of chemically modified sawdust to obtain an inexpensive adsorbent for removing the Crystal violet dye (CV) from synthetic aqueous solutions has been presented in this research paper. The influence of some important parameters such as: initial dye concentration, adsorbent dose, contact time and temperature on adsorption efficiency for this dye removal have been studied. The Freundlich, Langmuir and Temkin mathematical models have been used to evaluate the data of Crystal violet adsorption from aqueous media using wood sawdust. The research study shows that beech wood sawdust (Fagus sylvatica), as an agricultural waste which is readily available and relatively inexpensive has the potential to be an applicable alternative adsorbent for Crystal violet dye removal from industrial effluents.

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GRAVIMETRIC DETERMINATION OF SULPHATE IN SOME SELECTED INDUSTRIAL EFFLUENTS

FUDMA Journal of Sciences ◽

10.33003/fjs-2020-0404-484 ◽

2021 ◽

Vol 4 (4) ◽

pp. 290-294

Author(s):

Umar Bilal ◽

Ibrahim Imrana ◽

Muhammad Suleiman Darma

Keyword(s):

Low Cost ◽

Aqueous Media ◽

Industrial Effluent ◽

Industrial Effluents ◽

World Health ◽

Gravimetric Analysis ◽

Regulatory Standard ◽

Health Organization ◽

Technological Treatment

Gravimetric Analysis as one of the Analytical method for the Quantitative Determination of sulphate ions from aqueous media being the most simplest, rapid and low-cost method. This study evaluates some selected parameters and the results were compared with some regulatory standard; Federal Ministry of Environment (FME) in Nigeria and the World Health Organization. The Concentration of the selected industrial effluent was determined using the aforementioned method. The values of Density, TSS and TS were in the range of 0.950 g/ml – 0.976 g/ml, 67 ppm – 2051 ppm and 728 mg/L- 2700 mg/L respectively. While the percentage of sulphate obtained from each sample were 14.65%, 7.35%, 6.19, 17.93% and 29.01% for NASCO, DANA, KRPC, NILEST and KCV respectively. A new technological treatment process is recommended for these industries to provide good ways on waste management that are economically viable.

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Acid Blue 25 Removal by using Fe2+ Activated Persulfate

10.31224/osf.io/8dv2h ◽

2020 ◽

Author(s):

Zeinab Ghorbani

Keyword(s):

Textile Industry ◽

Dye Removal ◽

Aqueous Media ◽

Industrial Effluents ◽

Sodium Persulfate ◽

Optimal Conditions ◽

Initial Concentration ◽

The One ◽

Acid Blue ◽

Activated Persulfate

Dyes are one of the most important contaminants in the textile industry wastewater, which are often carcinogenic, and biodegradable. So their removal from the effluent is environmentally important. This study aimed to investigate the efficiency of sodium persulfate in removing dye from aqueous media. In order to optimize each parameter, the one-factor-at-a-time method was used. In this experimental study, the effect of three main parameters including pH, sodium persulfate concentration, and iron (II) concentration on dye removal from aqueous solution was investigated. According to the results obtained from the experiments, the optimal removal efficiency of 92% was obtained in 60 minutes and under optimal conditions of pH=3, the initial concentration of sodium persulfate=500 mg / L, and the initial concentration of iron (II) sulfate=100 mg / L. According to the results, the use of sodium persulfate salt activated with Fe2+ can be an efficient process for dye removal from industrial effluents.

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Adsorptive removal of malachite green dye from aqueous solution onto activated carbon of Catha edulis stem as a low cost bio-adsorbent

10.21203/rs.3.rs-35247/v1 ◽

2020 ◽

Author(s):

Gietu yirga Abate ◽

Adugna Nigatu Alene ◽

Adere Tarekegne Habte ◽

Desiew Mekuanint Getahun

Keyword(s):

Activated Carbon ◽

Low Cost ◽

Aqueous Media ◽

Freundlich Isotherm ◽

Industrial Effluents ◽

Aqueous System ◽

Isotherm Models ◽

Synthetic Dyes ◽

Order Kinetic ◽

Catha Edulis

Abstract Background: The release of hazardous synthetic dyes into industrial effluents has emerged as an environmental problem requiring remediation. The present study focused on the preparation of a new and environmentally-friendly material (adsorbent) for the remediation of aqueous media containing dye. The low cost adsorbent was prepared from locally available khat (Catha edulis) stem which considered as waste and accumulated on waste disposal areas of woldia town, Ethiopia. Comprehensive characterization studies were carried out on the bio-adsorbent such as proximate analyses, specific surface area, and Fourier-Transform Infrared (FTIR) spectroscopy (which shows functional groups on adsorbents surface). Results: The proximate analysis shows the prepared adsorbent has very high fixed carbon content (83.65%), which refers to high quality of the adsorbent. The adsorption performance of the prepared activated carbon was optimize by varying operating parameters such as initial dye concentration (10 mg/L), pH (10), dosage (0.5 g), and contact time (60 min). The maximum removal efficiency of the prepared adsorbent at those optimum conditions was 98.8%. The experimental data was tested by most common kinetics and isotherm models. It was observed that the pseudo-second-order kinetic model fits better with good correlation coefficient and the equilibrium data fitted well with the Freundlich isotherm model. Conclusion: In summery this study demonstrated that the waste bio sorbent could be employed as an effective and eco-friendly alternative for the cleanup of dye-polluted aqueous system.

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