Nanoporous activated carbons derived from water ferns as an adsorbent for removal of paraquat from contaminated water

Materialia ◽  
2021 ◽  
Vol 15 ◽  
pp. 100986
Author(s):  
Natnicha Mueanpun ◽  
Nuttapon Srisuk ◽  
Nattapat Chaiammart ◽  
Gasidit Panomsuwan
Keyword(s):  
Activated Carbons ◽  
Contaminated Water ◽  
Water Ferns

scholarly journals Determination and Remediation of Selected Polycyclic Aromatic Hydrocarbons in Petroleum Contaminated Water

2020 ◽  
Vol 24 (3) ◽  
pp. 459-465
Author(s):  
O.O. Ijaola ◽  
A.Y. Sangodoyin
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Removal Efficiency ◽  
Aromatic Hydrocarbons ◽  
Activated Carbons ◽  
Experimental Result ◽  
Contaminated Water ◽  
Total Efficiency ◽  
Spectroscopic Techniques ◽  
Bambusa Vulgaris ◽  
Polycyclic Aromatic

Determination and remediation of pollutants such as polycyclic aromatic hydrocarbons (PAHs) have not being fully regulated in Nigeria; hence  contamination of surface water by such pollutant is a major concern. This study was designed to determine the level of selected PAHs in petroleum contaminated water using spectroscopic techniques and the efficacy of activated carbons made from Bambusa vulgaris and Oxytenanthera  vabyssinaca. Bambusa vulgaris and Oxytenanthera abyssinaca were carbonized at 350OC and activated with Phosphoric acid (CBV350OC H3PO4) and Potassium chloride (COA 350OC KCl) as dehydrating agent respectively. The adsorbents were then used to remediate PAHs in petroleum contaminated water. Liquid-Liquid extraction procedures were used for extracting selected PAHs from sampled solutions. The batch experiment was performed to study the adsorption capacity of adsorbents at 5hrs contact time. Analysis of PAHs concentration for each sampling day was determined by GC-MS. Total PAHs in simulated wastewater did not show a clear trend, contrary to the expectation that there should be a progressive increase with time due to photolysis or photodecomposition of compounds or PAHs. COA 350OC KCl showed a range of 6.2-19.3% removal efficiency of each selected PAH with a total percentage efficiency of 27.7-70.8 for all days. For CBV350OC H3PO4 removal efficiency ranged from 10.26-19.30% for each selected PAH and a total efficiency of 50.8-100% for all selected PAHs for the 4 days intervals. The experimental result showed that adsorbent made from Bambusa vulgaris and Oxytenanthera abyssinaca and activated with H3PO4 and KCl as dehydrating agentrespectively can efficiently adsorb the selected PAHs in contaminated water. The study also revealed that PAHs in contaminated water increases with time due to photodecomposition, thus necessitating their treatment on time.

Study and Application of Various Activated Carbons and Ash used in Water Purification Techniques: A Review

2020 ◽  
Vol 15 (3) ◽  
pp. 384-397
Author(s):  
Ajinkya Ravindra Telgote ◽  
Satish Sudhakarao Patil
Keyword(s):  
Water Pollution ◽  
Large Scale ◽  
Activated Carbons ◽  
Orange Peel ◽  
Cost Effective ◽  
Review Article ◽  
Banana Peel ◽  
Contaminated Water ◽  
Peanut Shell ◽  
Pomegranate Peel

Water pollution is increasing due to the different factors such as population growth, large-scale urbanization, deforestation, and unethical activities in the river or other sources of water. Various experts have been working in the field of the preparation ofactivated carbon from renewable energy including cost-effective technologies and products in an eco-friendly manner for various applications. This review article discusses methodologies utilized by various experts for the preparation of activated carbon for the abatement of water pollution. Biomasssuch ascoconut shell, Moringaoleifera seed, Peanut shell, Pomegranate peel, Rice husk, Lemon shell, Banana peel, and Orange Peel are found extremely helpful in the field of treatment of the contaminated water. The reviewed literature showed that the Biomass can be isolatespollutants from contaminated water through physical, mechanical, and biological techniques and removes various physicochemical pollutants such as pH, color, DO, turbidity, conductivity, turbidity, chloride, fluoride, TSS, TDS, BOD, COD, nitrate, phosphate, and heavy metal, etc. from contaminated water.

scholarly journals The Role of Carbon Nanotube Pretreatments in the Adsorption of Benzoic Acid

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2118
Author(s):  
Pierantonio De Luca ◽  
Carlo Siciliano ◽  
Anastasia Macario ◽  
Jànos B. Nagy
Keyword(s):  
Carbon Nanotubes ◽  
Benzoic Acid ◽  
Activated Carbons ◽  
Thermal Analyses ◽  
Contaminated Water ◽  
Different Types ◽  
Multi Walled Carbon Nanotubes ◽  
Uv Visible ◽  
Walled Carbon Nanotubes

Four different types of multi-walled carbon nanotubes (MWCNTs) were used and compared for the treatment of benzoic acid contaminated water. The types of nanotubes used were: (1) non-purified (CNTsUP), as made; (2) purified (CNTsP), not containing the catalyst; (3) oxidized (CNTsOX), characterized by the presence of groups such as, –COOH; (4) calcined (CNTs900), with elimination of interactions between nanotubes. In addition, activated carbon was also used to allow for later comparison. The adsorption tests were conducted on an aqueous solution of benzoic acid at concentration of 20 mg/L, as a model of carboxylated aromatic compounds. After the adsorption tests, the residual benzoic acid concentrations were measured by UV-visible spectrometry, while the carbon nanotubes were characterized by TG and DTA thermal analyses and electron microscopy (SEM). The results show that the type of nanotubes thermally treated at 900 °C has the best performances in terms of adsorption rate and amounts of collected acid, even if compared with the performance of activated carbons.

Role of acidic sites in beta-hexachlorocyclohexane (β-HCH) adsorption by activated carbons: molecular modelling and adsorption–desorption studies

RSC Advances ◽  
2015 ◽  
Vol 5 (103) ◽  
pp. 85153-85164 ◽  
Author(s):  
A. Durimel ◽  
N. Passé-Coutrin ◽  
C. Jean-Marius ◽  
R. Gadiou ◽  
C. Enriquez-Victorero ◽  
...  
Keyword(s):  
Molecular Modelling ◽  
Activated Carbons ◽  
Contaminated Water ◽  
Acidic Sites ◽  
Adsorption Desorption

The role played by acidic groups on the removal of β-HCH from contaminated water by adsorption on activated is shown.

Desorption and Reutilization Studies of Copper and Lead Lons by Activated Carbons Prepared from Ulva Fasciata sp

2012 ◽  
Vol 2 (6) ◽  
pp. 60-63
Author(s):  
R. P. Suresh Jeyakumar ◽  
◽  
Dr. V. Chandrasekaran Dr. V. Chandrasekaran
Keyword(s):  
Activated Carbons ◽  
Ulva Fasciata

Parameters Affecting Dye Adsorption - Using Graphene Coated Sand (GSC)

2018 ◽  
Vol 4 (02) ◽  
Author(s):  
Seroor Atalah Khaleefa Alia ◽  
Dr. Mohammed Ibrahimb ◽  
Hussein Ali Hussein
Keyword(s):  
Heavy Metals ◽  
Contact Time ◽  
Organic Dyes ◽  
Low Cost ◽  
Dye Adsorption ◽  
Contaminated Water ◽  
Maximum Adsorption Capacity ◽  
Engineering Designs ◽  
Heavy Metals Ions ◽  
Coated Sand

Adsorption is most commonly applied process for the removal of pollutants such as dyes and heavy metals ions from wastewater. The present work talks about preparing graphenic material attached sand grains called graphene sand composite (GSC) by using ordinary sugar as a carbon source. Physical morphology and chemical composition of GSC was examined by using (FTIR, SEM, EDAX and XRD). Efficiency of GSC in the adsorption of organic dyes from water was investigated using reactive green dye with different parameters such as (ph, temperature, contact time and dose). Adsorption isotherm was also studied and the results showed that the maximum adsorption capacity of dye is 28.98 mg/g. This fast, low-cost process can be used to manufacture commercial filters to treat contaminated water using appropriate engineering designs.

DISINFECTION OF E. coli CONTAMINATED WATER USING TUNGSTEN TRIOXIDE-BASED PHOTOELECTROCATALYSIS

2016 ◽  
Vol 15 (4) ◽  
pp. 899-903 ◽  
Author(s):  
Donald E. Macphee ◽  
Efetobor Scott-Emuakpor ◽  
Graeme I. Paton ◽  
Malcolm J. Todd
Keyword(s):  
Tungsten Trioxide ◽  
Contaminated Water ◽  
E Coli

Legionnaire’s disease and COVID-19: Could Legionella be acting in conjunction with the Corona virus to aggravate the COVID-19 disease?

2020 ◽  
Author(s):  
Andrew John PENDERY
Keyword(s):  
Drinking Water ◽  
Air Conditioning ◽  
Water Systems ◽  
Contaminated Water ◽  
Cooling Towers ◽  
Age Group ◽  
Corona Virus ◽  
The Usa ◽  
Legionnaire's Disease ◽  
Legionnaire’S Disease

There are some striking similarities between Legionnaire’s disease and COVID-19. Thesymptoms, age group and sex at risk are identical. The geographical distribution of both diseases is similar in Europe overall, and within the USA, France and Italy. The environmental distributions are also similar. However Legionnaire’s disease is caused by Legionella bacteria while COVID-19 is caused by the Corona virus. Whereas COVID-19 is contagious, Legionnaire’s disease is environmental. Legionella bacteria are commonly found in drinking water systems and near air conditioning cooling towers. Legionnaire’sdisease is caught by inhaling contaminated water droplets. The Legionella bacteria does not spread person to person and only causes disease if it enters the lungs.Could the Corona virus be making it easier for Legionella bacteria to enter the lungs?

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