Use of adsorption using granular activated carbon (GAC) for the enhancement of removal of chromium from synthetic wastewater by electrocoagulation

Narayanan, N. Vivek; Ganesan, M.

doi:10.1016/j.jhazmat.2008.03.113

Cited by 105 publications

(36 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The optimum conditions would be considered when the current density has been increased to 26.7 mA/cm 2 , operating time of 100 minutes for the electrocoagulation. The authors noticed that with GAC added to the systems it dramatically reduced the concentration of chromium [115]. Yüksel et al determined that sodium doecyl sulfate (SDS) removal was 81.6% for peroxi-electrocoagulation, where the optimum conditions included 60 mg/L, 0.5 mA/cm 2 , 10 minutes electrolysis time, and an energy consumption of 1.63 kWh/kg SDS.…”

Section: Combined Treated With Adsorption Membranesmentioning

confidence: 99%

Electrocoagulation in Wastewater Treatment

Butler

Hung

Yeh

et al. 2011

Water

187

View full text Add to dashboard Cite

show abstract

Section: Combined Treated With Adsorption Membranesmentioning

confidence: 99%

Electrocoagulation in Wastewater Treatment

Butler

Hung

Yeh

et al. 2011

Water

187

View full text Add to dashboard Cite

show abstract

“…Grafting acrylamide onto cellulose was investigated using ceric ammonium nitrate as the initiator, and the grafted cellulose was applied for sorption studies using Cu, Cr, Ni, and Pb ions from aqueous streams (Nada et al 2007). The initiator generated radicals on the cellulose backbone that were highly reactive, and the ceric ion (Ce 4+ ) exhibited a profound effect on the initiator because of its high efficiency in grafting (Narayanan and Mahesh 2009). Subsequently, grafted copolymers have been converted into polymeric chelating ligands that can be applied to remove toxic metal ions from wastewater (Gürdag et al 1997).…”

Section: Introductionmentioning

confidence: 99%

“…To eliminate metallic cations from wastewater, numerous conventional techniques including chemical precipitation, ion exchange, reverse osmosis, membrane separation, electrochemical treatments, and solvent extraction have been extensively applied (Akkaya and Ulusoy 2008;Jang et al 2008;Zhao and Mitomo 2008). Activated carbon adsorption of toxic metal ion-containing waste, followed by precipitation, improved metal ion removal considerably (Narayanan and Mahesh 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Despite considerable benefits, chemical coagulation often induces secondary pollution by added chemical substances (Narayanan and Mahesh 2009), and the sludge produced incurs a high disposal cost (Narayanan and Mahesh 2009;Yong et al 2012). Thus, these techniques are oftentimes costly and ineffective, particularly in removing heavy metal ions at lower concentrations (Laus and de Fávere 2011).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Poly(amidoxime) from Polymer-Grafted Khaya Cellulose: An Excellent Medium for the Removal of Transition Metal Cations from Aqueous Solution

Rahman¹,

Sarkar²,

Yusoff³

et al. 2016

BioResources

View full text Add to dashboard Cite

A free radical chain initiation reaction was exploited to prepare poly(acrylonitrile)-grafted Khaya cellulose. The synthesis of the poly(amidoxime) ligand was also performed using oximation reactions. Transition metal cations formed some complexes with the polymeric ligand. The pH of the solution played an important role in the optical detection of Cu 2+ ions. The highest absorbance (approximately 94%) of the [Cu-ligand] n+ complex was at pH 6. The sorption quantity increased with increasing Cu 2+ ion concentration, which was reflected by a broad peak at 600 nm that was attributed to the charge transfer (- transition) process. The equilibrium sorption capacity of 282 mg/g, with faster adsorption rates (t1/2 = 8 min), suggested that copper possessed excellent adsorption capacity compared with the other cations (Fe 3+ , Co 3+ , Cr 3+ , Ni 2+ , and Zn 2+ ). The sorption data for all of the cations followed the Freundlich isotherm model, with a high coefficient of determination, reflecting a heterogeneous sorption process by the cellulose-based, poly(amidoxime) adsorbent. The feasibility for recycling of adsorbent was evaluated by the sorption/ desorption study, and the results suggest that a new type adsorbent can be reused in seven cycles without any significant loss in its original sensing and removal performances.

show abstract

“…One important aspect of sawdust application in wastewater treatment can be the environmentally friendly usage of this product in industry. Previous studies indicated that the heavy metal removal process is based on filtration of granular materials, which, according to atomic properties of the metals, can occur as hydroxide, sulfate, and carbonated sedimentation [9][10][11][12]. Many researchers around the world investigate adsorption and filtration processes of sludge resulting from these processes, which are typically toxic and harmful.…”

Section: Introductionmentioning

confidence: 99%

Pilot plant studies for the removal of heavy metals from industrial wastewater using adsorbents

Mirbagheri¹,

Biglarijoo²,

Nejad³

2014

Turkish J Eng Env Sci

View full text Add to dashboard Cite

Due to carcinogenic and toxic effects of heavy metals on the environment and living beings, the necessity of proper removal systems for these harmful elements is obvious. Additionally, conventional methods in wastewater treatment are mainly biological; therefore, removal of heavy metals should occur by using adsorbents. In this study, activated carbon along with other cheap and available materials such as sawdust and bentonite in seven different adsorbent mixtures is applied to remove heavy metals from wastewater. Wastewater was applied to the system with a flow rate of 0.2 L min. Assuming fixed pH, biochemical oxygen demand, chemical oxygen demand, and total suspended solids, amounts of Fe, Mn, Cu, Al, and Mg from the wastewater were measured. Finally, adsorption capacity results were analyzed according to Langmuir and Freundlich theories for each mixture of adsorbents. Based on the results, sawdust is introduced as a desirable adsorbent for most heavy metals. For each element, an optimized adsorbent is also suggested, which, due to similar atomic and cationic properties, can be generalized for other similar elements.

show abstract

Use of adsorption using granular activated carbon (GAC) for the enhancement of removal of chromium from synthetic wastewater by electrocoagulation

Cited by 105 publications

References 25 publications

Electrocoagulation in Wastewater Treatment

Electrocoagulation in Wastewater Treatment

Poly(amidoxime) from Polymer-Grafted Khaya Cellulose: An Excellent Medium for the Removal of Transition Metal Cations from Aqueous Solution

Pilot plant studies for the removal of heavy metals from industrial wastewater using adsorbents

Contact Info

Product

Resources

About