Inverse fluidized bed for chromium ions removal from wastewater and produced water using peanut shells as adsorbent

Majeed, Najwa Saber

doi:10.1109/eiogi.2017.8267617

Cited by 4 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various methods such as, chemical precipitation, ion exchange, and filtration such as ultrafiltration, reverse osmosis and nanofiltration are available to treat heavy metal-contaminated wastewater. However, these methods have drawbacks such as limited efficacy, high operational expenses [6]. Exposure to cadmium, a highly toxic element, can result in various health problems.…”

Section: Introductionmentioning

confidence: 99%

Flotation of Cadmium Ions from Wastewater Using Air Micro-Bubbles

Abd Alhuseen,

Abdulrazzaq

2023

J. Ecol. Eng.

View full text Add to dashboard Cite

In this work were carried out to verify the efficiency of micro-bubbles in flotation the heavy metals (Cadmium ions) from wastewater. Its unique attributes of being affordable, having a straightforward design, being highly efficient, and not causing any secondary contamination are the reasons for this. The flotation process (removal efficiency) was analyzed under different reaction conditions. Including PH of initial solution, initial pollutant concentration, gas (air) flow rate, type (anionic or cationic) and concentration of surfactant used, sampling port location and contact time. It was found from the experiments that the removal of Cd(II) by micro-bubbles was higher at pH 7.2, flow rate of 0.50 L/min, SDS surfactant concentration of 15 mg/L, pollutant concentration of 30 mg/L, and at a high 30 cm port, with a removal efficiency of 98.44%. In addition, normal bubbles were used in experiments alongside micro-bubbles, revealing a 56.5% increase in removal efficiency. Furthermore, the study identified the kinetic flotation order of Cd(II) ions to be approximately first order.

show abstract

Section: Introductionmentioning

confidence: 99%

Flotation of Cadmium Ions from Wastewater Using Air Micro-Bubbles

Abd Alhuseen,

Abdulrazzaq

2023

J. Ecol. Eng.

View full text Add to dashboard Cite

show abstract

“…Large-scale environmental pollution from industrial wastewater discharges necessitates the creation and implementation of effective treatment methods that can eliminate the dangerous contaminants present in these industrial streams (Al-Alawy et al, 2017). Water is used in vast amounts throughout the refining process in the petroleum industry (Dhamin et al, 2022) According to a survey, the amount of wastewater produced by the methods used to refine oil is 1.6 times greater than the total amount of crude oil treated, and between 80 and 90% of the water used in the process (Majeed, 2017). The compounds contained in contaminated water are diverse and complicated, including chemical oxygen demand (COD), varied amounts of emulsified oil, heavy metals, organic compounds, aromatic hydrocarbons, oils and greases, phenol, and occasionally radioactive elements.…”

Section: Introductionmentioning

confidence: 99%

Modified Graphite with Tin Oxide as a Promising Electrode for Reduction of Organic Pollutants from Wastewater by Sonoelectrochemical Oxidation

Nsaif,

Majeed

2024

Ecol. Eng. Environ. Technol.

View full text Add to dashboard Cite

Most of the studies on tin oxide coatings as electrode materials were conducted on titanium; in this study, the aim was to create pure tin oxide (SnO 2 ) films on graphite substrate, which is more prevalent than titanium. There is a lack in investigation the effect of SnCl 2 and HNO 3 concentrations on the prepared SnO 2 electrode; therefore, the aim of this work was to study these effects precisely. Also, no previous study investigated the removal of phenol sonoelectrochemically by a SnO 2 electrode, which would be accomplished in the present work. The tin dioxide electrode was produced by cathodic electrodeposition using a SnCl 2 •2H 2 O solution in the presence of HNO 3 and NaNO 3 on a graphite plate substrate. The impact of various operating parameters (current density -CD, HNO 3 concentration, and SnCl 2 •2H 2 O concentration) on the morphology and structure of the SnO 2 deposit layer was thoroughly investigated. The physical structures of the SnO 2 film were determined by X-ray diffraction (XRD), surface morphology was characterized using field-emission scanning electron microscopy (SEM), and chemical composition was analyzed using energy-dispersive X-ray spectroscopy (EDX). In a batch reactor, the sonoelectrochemical oxidation of phenol was tested to determine the performance of the best SnO 2 electrodes for phenol degradation and any organic byproducts. It was discovered that 10 mA/cm 2 , 50 mM of SnCL 2 •2H 2 O, and 250 mM of HNO 3 were the optimum conditions to prepare SnO 2 electrodes, which produced the smallest crystal size, with no appeared cracks, and gave the best phenol removal. The best prepared electrode was tested in the sonoelectrochemical oxidation of phenol with two different electrolytes and different CD, and the results showed that the phenol removal was 76.87% and 64.68% when using NaCl and Na 2 SO 4 , respectively, as well as was 63.39, 76.87, and 100% for CD at 10, 25, and 40 mA/cm 2 , respectively.

show abstract

“…The Environmental Protection Agency (EPA) sets 0.1 mg/L limit for hexavalent chromium in drinking water [14]. Traditional water treatment techniques, such as absorption, have been assessed for water and wastewater treatment [15], ultrafiltration [16], coagulation and direct microfiltration [17], electrochemical method [18], reverse osmosis [19], solvent extraction [20], using raw scrap with zero-valent iron and zero-valent aluminum [21] and ion-exchange methods [22]. Conventional water treatment methods remove contaminants but face issues such as energy use, complexity, and hazardous waste [23].…”

Section: -Introductionmentioning

confidence: 99%

Flotation of Chromium Ions from Simulated Wastewater Using Air Microbubbles

Abd Alhuseen,

Abdulrazzaq,

Sedev

2023

IJCPE

View full text Add to dashboard Cite

A microbubble air flotation technique was used to remove chromium ions from simulated wastewater (e.g. water used for electroplating, textiles, paints and pigments, and tanning leather). Experimental parameters were investigated to analyze the flotation process and determine the removal efficiency. These parameters included the location of the sampling port from the bottom of the column, where the diffuser is located to the top of flotation column (30, 60, and 90 cm), the type of surfactant (anionic, SDS, or cationic, CTAB) and its concentration (5, 10, 15, and 20 mg/L), the pH of the initial solution (3, 5, 7, 9, and 11), the initial contaminant concentration (10, 20, 30, and 40 mg/L), the gas flow rate (0.1, 0.2, 0.3, and 0.5 L/min), and the contact time (5, 10, 15, 20, 25, 30, and 35 min). The experimental results revealed that the highest removal efficiency (95%) was achieved in 20 min with a pH of 7, a flow rate of air 0.5 L/min, an SDS surfactant concentration of 15 mg/L, and a pollutant concentration of 30 mg/L at a sampling port height of 30 cm. The use of microbubbles in comparison to normal bubbles, resulted in a 56% improvement of the removal efficiency. The flotation process follows a first-order kinetics.

show abstract

Inverse fluidized bed for chromium ions removal from wastewater and produced water using peanut shells as adsorbent

Cited by 4 publications

References 4 publications

Flotation of Cadmium Ions from Wastewater Using Air Micro-Bubbles

Flotation of Cadmium Ions from Wastewater Using Air Micro-Bubbles

Modified Graphite with Tin Oxide as a Promising Electrode for Reduction of Organic Pollutants from Wastewater by Sonoelectrochemical Oxidation

Flotation of Chromium Ions from Simulated Wastewater Using Air Microbubbles

Contact Info

Product

Resources

About