scholarly journals Ceramic hydroxyapatite foam as a new material for Bisphenol A removal from contaminated water

2021 ◽  
Author(s):  
Hamza Khallok ◽  
Mohamed Zbair ◽  
Satu Ojala ◽  
Kaisu Ainassaari ◽  
Rachid Brahmi ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Contaminated Water ◽  
New Material ◽  
Ceramic Hydroxyapatite

scholarly journals Plasmonic photocatalysis: complete degradation of bisphenol A by a gold nanoparticle–reduced graphene oxide composite under visible light

2018 ◽  
Vol 17 (5) ◽  
pp. 628-637 ◽  
Author(s):  
Haydar Ali ◽  
Nikhil R. Jana
Keyword(s):  
Graphene Oxide ◽  
Bisphenol A ◽  
Visible Light ◽  
Gold Nanoparticle ◽  
Reduced Graphene Oxide ◽  
Contaminated Water ◽  
Food Environments ◽  
Oxide Composite ◽  
Complete Degradation ◽  
Reduced Graphene

A gold nanoparticle–graphene based composite has been developed for the degradation of bisphenol A under visible light and to detoxify contaminated water/food/environments.

Neoteric Material Based on Renewable Resources for Metal-Contaminated Waters

2021 ◽  
Vol 9 (1) ◽  
pp. 3
Author(s):  
Iolanda-Veronica Ganea ◽  
Alexandrina Nan ◽  
Iulia Neamțiu ◽  
Călin Baciu
Keyword(s):  
Electron Microscopy ◽  
Renewable Resources ◽  
Absorption Spectrometry ◽  
Contaminated Water ◽  
Metal Release ◽  
Continuous Increase ◽  
X Ray ◽  
Environmental Media ◽  
New Material ◽  
Low Costs

A continuous increase of environmental pollution has been recorded worldwide, during recent decades, as a result of industrialization and urbanization. In particular, metal release in the environmental media may threaten human health, due to their persistence and accumulation in the food chain. We report here the functionalization of chitosan with poly(benzofurane-co-arylacetic) acid, which is a new material with the ability of complex metals from contaminated water. The synthesized polymer was structurally investigated by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), X-ray photon electron microscopy (XPS), and Fourier-transform infrared spectroscopy (FTIR), while heavy metals were determined by atomic absorption spectrometry. Different isotherms and kinetic models were used to describe the absorption equilibrium and the behavior of the material, based on the initial pollutant concentration and contact time. The results are pointing out that such natural materials can be easily synthesized, at low costs, thus offering attractive solutions for wastewater treatment.

scholarly journals Adsorptive Removal of Sulfamethoxazole and Bisphenol A from Contaminated Water using Functionalized Carbonaceous Material Derived from Tea Leaves

2018 ◽  
Vol 6 (4) ◽  
pp. 4215-4225 ◽  
Author(s):  
Md Ariful Ahsan ◽  
Md Tariqul Islam ◽  
Cesar Hernandez ◽  
Hoejin Kim ◽  
Yirong Lin ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Carbonaceous Material ◽  
Contaminated Water ◽  
Tea Leaves ◽  
Adsorptive Removal

A scFv Antibody-Based Immunoaffinity Chromatography Column for Clean-Up of Bisphenol A-Contaminated Water Samples

2009 ◽  
Vol 57 (2) ◽  
pp. 353-358 ◽  
Author(s):  
Hideyuki Inui ◽  
Akira Takehara ◽  
Fumito Doi ◽  
Kosuke Nishi ◽  
Mikio Takai ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Water Samples ◽  
Immunoaffinity Chromatography ◽  
Scfv Antibody ◽  
Contaminated Water ◽  
Chromatography Column

scholarly journals Assessment of Conventional Full-Scale Treatment for the Removal of Endocrine Disruptors and Pharmaceuticals Present in the Tibagi River (Paraná State, Brazil)

2021 ◽  
Vol 9 ◽  
Author(s):  
Ajadir Fazolo ◽  
Lígia Flávia Antunes Batista ◽  
Fernanda Martins Nonaka ◽  
Ananda Lima Sanson ◽  
Mariana Corrêa Pessato Alves ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Endocrine Disruptors ◽  
Aluminum Sulfate ◽  
Human Health Risk ◽  
Treatment Plant ◽  
Low Frequency ◽  
Water Treatment Plant ◽  
Contaminated Water ◽  
Raw Water ◽  
Dry And Rainy Seasons

The concentrations of 25 pharmaceuticals and endocrine disruptors were monitored in the water coming from the Tibagi River (State of Paraná, Brazil) and in a conventional water treatment plant over 13 sampling campaigns. In raw water, only 3 compounds (bisphenol A, dexamethasone and losartan) were detected with high frequency (>75%) and 4 drugs (estradiol, diclofenac, loratadine and naproxen) were found with moderate frequency (between 30 and 70%). In addition, 7 micropollutants (paracetamol, ethinylestradiol, caffeine, propanolol, diltiazem, benzafibrate and promethazine) were not detected in any of the samples analyzed and 11 other compounds were quantified at low frequency (up to 25%). The conventional treatment process employed at WTP- Jataizinho has proven to be very efficient in removing dexamethasone (∼99%), moderately efficient in reducing bisphenol A (∼47%) concentration and inefficient in removing losartan (∼22%) and loratadine (not removed). The greatest removals were observed during the water clarification stage using aluminum sulfate as coagulant. In general, the dry and rainy seasons did not influence the concentrations of pharmaceuticals and endocrine disruptors in raw water. In terms of the 5 most prevalent micropollutants in treated water (bisphenol A, losartan, dexamethasone, loratadine and naproxen), the human health risk associated with ingesting contaminated water was assessed and considered negligible.

Removal of Cadmium From Contaminated Water

1999 ◽  
Author(s):  
Shariar Jahanian ◽  
Hossein Rostami
Keyword(s):  
Fly Ash ◽  
Petroleum Products ◽  
Contaminated Water ◽  
Column Test ◽  
Superfund Sites ◽  
Barrier Material ◽  
Reactive Barrier ◽  
The Past ◽  
New Material ◽  
Different Sources

Abstract Over the past 15 years, about one half million sites with potential contamination have been reported to federal or state authorities. Of these, about 217,000 sites still need remediation (1) and new contaminated sites continue to appear each year. The most common type of contaminants are metals, solvents and petroleum products. Heavy metals are present in two thirds of DOD and superfund sites and about 50% of DOE and RCRA sites. AAM is a new material that possesses the ability to remove heavy metal from conaminated water. AAM consists of fly ash activating chemicals and fillers. AAM barrier material was used to remove Cd from contamination water. Fly ash from three different sources were used to produce reactive barrier of different permeability. AAM materials with permeability 10−2 to 10−1 was created. Only highest permeability proved to be viable for reactive barrier material. AAM barrier from three ash sources with permeability of 10−1 was produced and crushed into pelletized form. To determine effectiveness of the various barriers batch test was performed, based on that result the column test was conducted. In this work contamination barrier with controled permeabilty was tested to determine its ability to remove Cd from contaminated water. AAM barrier material was used in column test to remove Cd from 1000 ppm and 10 ppm solution. The results show that AAM barrier is very effective in removing Cd from highly contaminated water (up 99% efficiency).

Arsenic removal by iron oxide coated sponge: treatment and waste management

2009 ◽  
Vol 60 (6) ◽  
pp. 1489-1495 ◽  
Author(s):  
Tien Vinh Nguyen ◽  
Abdur Rahman ◽  
Saravanamuthu Vigneswaran ◽  
Huu Hao Ngo ◽  
Jaya Kandasamy ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Arsenic Removal ◽  
High Capacity ◽  
Water Supply Systems ◽  
Contaminated Water ◽  
Community Water ◽  
The World ◽  
New Material ◽  
Supply Systems ◽  
Better Than

One of the problems in drinking water that raises concern over the world is that millions of people still have to use arsenic-contaminated water. There is a worldwide need to develop appropriate technologies to remove arsenic from water for household and community water supply systems. In this study, a new material namely iron oxide coated sponge (IOCSp) was developed and used to remove arsenic (As) from contaminated groundwater in Vietnam. The results indicated that IOCSp has a high capacity in removing both As (V) and As (III). The adsorption capacity of IOCSp was up to 4.6 mg As/g IOCSp, showing better than many other materials. It was observed from a pilot study that a small quantity of IOCSp (180 g) could reduce As concentration of 480 μg/L in 1.5 m3 of contaminated natural water to below 40 μg/L. In addition, an exhausted IOCSp, containing a large amount of arsenic (up to 0.42 wt %) could safely be disposed through the solidification/stabilization with cement. Addition of fly ash also reduced the amount of arsenic in the leachate.

Removal of Chromium From Contaminated Water

1999 ◽  
Author(s):  
Shariar Jahanian ◽  
Hossein Rostami
Keyword(s):  
Fly Ash ◽  
Petroleum Products ◽  
Contaminated Water ◽  
Column Test ◽  
Superfund Sites ◽  
Barrier Material ◽  
Reactive Barrier ◽  
The Past ◽  
New Material ◽  
Different Sources

Abstract Over the past 15 years, about one half million sites with potential contamination have been reported to federal or state authorities. Of these, about 217,000 sites still need remediation (1) and new contaminated sites continue to appear each year. The most common type of contaminants are metals, solvents and petroleum products. Heavy metals are present in two thirds of DOD and superfund sites and about 50% of DOE and RCRA sites. AAM is a new material that possesses the ability to remove heavy metal from conaminated water. AAM consists of fly ash activating chemicals and fillers. AAM barrier material was used to remove Cr from contamination water. Fly ash from three different sources were used to produce reactive barrier of different permeability. AAM materials with permeability 10−2 to 10−1 was created. Only highest permeability proved to be viable for reactive barrier material. AAM barrier from three ash sources with permeability of 10−1 was produced and crushed into pelletized form. To determine effectiveness of the various barriers batch test was performed, based on that result the column test was conducted. In this work contamination barrier with controled permeabilty was tested to determine its ability to remove Cr from contaminated water. AAM barrier material was used in column test to remove Cr from 1000 ppm and 10 ppm solution. The results show that AAM barrier is very effective in removing Cr from highly contaminated water (up 99% efficiency).

The Adsorption of Heavy Metal from Aqueous Solutions onto the Porous Biomorphic-Genetic Composite of Hydroxyapatite/Carbon with Eucalyptus and Bamboo Template

2015 ◽  
Vol 730 ◽  
pp. 260-264 ◽  
Author(s):  
Shuang Cao ◽  
Bin Huang ◽  
Zong Qiang Zhu ◽  
Yi Nian Zhu
Keyword(s):  
Heavy Metals ◽  
Metal Ion ◽  
Contaminated Water ◽  
Initial Concentration ◽  
Metal Ion Removal ◽  
Ion Removal ◽  
Adsorbed Amount ◽  
Removal Of Heavy Metals ◽  
New Material ◽  
Ammonia Leaching

This study used two types of plant, eucalyptus and bamboo, to produce sorbents for copper (II), cadmium (II), zinc (II), and lead (II) metal ion removal in a water bath shake. The porous biomorphic-genetic composite of hydroxyapatite/carbon with eucalyptus template (PBGC-Fe/C-E) and the porous biomorphic-genetic composite of hydroxyapatite/carbon with bamboo template (PBGC-Fe/C-B) were prepared using eucalyptus and bamboo as plant templates, and through various processes including ammonia leaching, cyclical impregnation using calcium hydroxide and diammonium solutions, and aerobic firing inside muffle furnaces. Tests were conducted on the HAP/C composites to observe their adsorption effects on Cu (II), Zn (II), Pb (II), and Cd (II). The results show that the prepared composites were able to adsorb heavy metals in water effectively. The results indicated that the adsorbed amount of PBGC-Fe/C-E were found to be 16.4371, 4.6725,24.5528, 17.0194 mg/1 for Cu (II), Zn (II), Pb (II) and Cd (II) ions at initial concentration of 50mg/L (25°C), respectively. The adsorbed amount of PBGC-Fe/C-B were found to be 10.5876, 3.9142,21.2463, 13.4721 mg/1 for Cu (II), Zn (II), Pb (II) and Cd (II) ions at initial concentration of 50mg/L (25°C), respectively. The prepared adsorbent is expected to be a new material for the removal of heavy metals from contaminated water.

scholarly journals Optimized photodegradation of Bisphenol A in water using ZnO, TiO<sub>2</sub> and SnO<sub>2</sub> photocatalysts under UV radiation as a decontamination procedure

2016 ◽  
Vol 9 (2) ◽  
pp. 27-35 ◽  
Author(s):  
Rudy Abo ◽  
Nicolai-Alexeji Kummer ◽  
Broder J. Merkel
Keyword(s):  
Surface Water ◽  
Solar Radiation ◽  
Bisphenol A ◽  
Photocatalytic Oxidation ◽  
Degradation Rate ◽  
Contaminated Water ◽  
Photo Oxidation ◽  
Low Intensity ◽  
Degradation Rates ◽  
Improved Technique

Abstract. Experiments on photodegradation of Bisphenol A (BPA) were carried out in water samples by means photocatalytic and photo-oxidation methods in the presence of ZnO, TiO2 and SnO2 catalysts. The objective of this study was to develop an improved technique that can be used as a remediation procedure for a BPA-contaminated surface water and groundwater based on the UV solar radiation. The photodegradation of BPA in water performed under a low-intensity UV source mimics the UVC and UVA spectrum of solar radiation between 254 and 365 nm. The archived results reveal higher degradation rates observed in the presence of ZnO than with TiO2 and SnO2 catalysts during 20 h of irradiation. The intervention of the advanced photocatalytic oxidation (PCO) reduces the time of degradation to less than 1 h to reach a degradation rate of 90 % for BPA in water. The study proposes the use of ZnO as a competitor catalyst to the traditional TiO2, providing the most effective treatment of contaminated water with phenolic products.

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