Batch adsorption of heavy metals (Cu, Pb, Fe, Cr and Cd) from aqueous solutions using coconut husk

Agbozu, I. E.; Emoruwa, F. O.

doi:10.5897/ajest2013.1577

Cited by 44 publications

(7 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In all cases, the Freundlich isotherm parameters K F displayed the same trend as the temperature increased, as presented in Table 2. Similar observations were reported in related studies [38,39].…”

Section: Adsorption Isotherm Resultssupporting

confidence: 93%

Adsorptive and Coagulative Removal of Trace Metals from Water Using Surface Modified Sawdust-Based Cellulose Nanocrystals

Oyewo

Ramaila

Mavuru

et al. 2021

View full text Add to dashboard Cite

The presence of toxic metals in surface and natural waters, even at trace levels, poses a great danger to humans and the ecosystem. Although the combination of adsorption and coagulation techniques has the potential to eradicate this problem, the use of inappropriate media remains a major drawback. This study reports on the application of NaNO2/NaHCO3 modified sawdust-based cellulose nanocrystals (MCNC) as both coagulant and adsorbent for the removal of Cu, Fe and Pb from aqueous solution. The surface modified coagulants, prepared by electrostatic interactions, were characterized using Fourier transform infrared, X-ray diffraction (XRD), and scanning electron microscopy/energy-dispersive spectrometry (SEM/EDS). The amount of coagulated/adsorbed trace metals was then analysed using inductively coupled plasma atomic emission spectroscopy (ICP-AES). SEM analysis revealed the patchy and distributed floccules on Fe-flocs, which was an indication of multiple mechanisms responsible for Fe removal onto MCNC. A shift in the peak position attributed to C2H192N64O16 from 2θ = 30 to 24.5° occurred in the XRD pattern of both Pb- and Cu-flocs. Different process variables, including initial metal ions concentration (10–200 mg/L), solution pH (2–10), and temperature (25–45 °C) were studied in order to investigate how they affect the reaction process. Both Cu and Pb adsorption followed the Langmuir isotherm with a maximum adsorption capacity of 111.1 and 2.82 mg/g, respectively, whereas the adsorption of Fe was suggestive of a multilayer adsorption process; however, Fe Langmuir maximum adsorption capacity was found to be 81.96 mg/g. The sequence of trace metals removal followed the order: Cu > Fe > Pb. The utilization of this product in different water matrices is an effective way to establish their robustness.

show abstract

Section: Adsorption Isotherm Resultssupporting

confidence: 93%

Adsorptive and Coagulative Removal of Trace Metals from Water Using Surface Modified Sawdust-Based Cellulose Nanocrystals

Oyewo

Ramaila

Mavuru

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The studied results shows that the higher adsorption at higher pH esteems for both metal ions may be because of the contending of H+ with that of the metal ions for adsorption destinations which reduces their adsorption. Comparative patterns of adsorption of overwhelming metals at higher pH esteem were additionally seen by different researchers (Agbozu & Emoruwa, 2014). In this concern, further adsorption considers were embraced the pH 6 to be used for Cr 3+ and Fe 2+ removal on MLP surface.…”

Section: Influence Of Ph Adsorbate Mediummentioning

confidence: 82%

Potential of Mangifera indica activated carbon for removal of chromium and iron

et al. 2020

View full text Add to dashboard Cite

The heavy metals are exceptionally responsive at low fixations and can accumulate in the food web, causing extreme general wellbeing concerns. Remediation utilizing customary physical and substance techniques is uneconomical and creates huge volumes of compound waste. Bioremediation of risky metals has gotten impressive and developing enthusiasm throughout the years. Adsorption of Cr 3+ and Fe 2+ from its aqueous solution on biosorbent Mango leaf powder (MLP) was prepared from matured Mango (Mangifera indica) leaves. The study was carried out by batch adsorption experiments using atomic adsorption spectroscopy upon various parameters used to assess their impact on the adsorption of metal ions. The achieved results evidenced the adsorption of Cr 3+ and Fe 2+ on MLP is better. The higher adsorption ability was shown about 237.5 and 227.5 mg/g respectively at 50 mg/L concentration of metal ions and 100 mg/L of MLP. Besides, the adsorption of Cr 3+ and Fe 2+ on MLP was found to be fitted with the Freundlich isotherm. Thermodynamic results showed the sorption process is feasible, spontaneous, and endothermic. Kinetic parameters had shown that the adsorption of Cr 3+ and Fe 2+ ions found as pseudo-second-order kinetics; also this current study proposing that ABOUT THE AUTHORS Dr. Ramesh Duraisamy, Industrial Chemist's working as an Associate Professor in Arba Minch University, Ethiopia. His profound expertise in the field of research includes water and wastewater treatment, waste management, sugar and food technology, textile and leather technology, Nano-material's development. His contributions in the above said research fields evident through his publications.Mihretu Mechoro, M.Sc student (physical chemistry) of Arba Minch University. His thesis focused on the removal of heavy metals from wastewater using biosorbent activated carbon.Dr. Tolera Seda Badessa, expertise the research fields as in Ion transport mechanism through ion exchange membrane upon electrodialysis/reversal elctrodialysis, etc. His profound contribution in the field of research has proven through the research articles were published in esteemed journals.Dr. Masood Akhtar Khan, Analytical Chemist's in Arba Minch University, Ethiopia. He has published many research articles in the field of ion exchange, adsorption of heavy metals and analysis of substances.

show abstract

“…Low-cost method of adsorption can be achieved by the utilization of low-cost adsorbent such as the utilization of agricultural waste. 4,5 Many studies concerned on the utilization of animal and agro waste for dye removal from water showed the contribution of the biosorption process to be developed and intensively studied for low-cost adsorption applications. [6][7][8][9] Peanut shell is a type of abundant agricultural waste in Indonesia.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Adsorption Capacity of Peanut Shelltoward Rhodamine B via Sodium Dodecyl Sulfate Modification

Fatimah¹,

Huda²,

Yusuf³

et al. 2018

RJC

View full text Add to dashboard Cite

Batch and flow adsorption experiments of rhodamine B were carried out by using peanut shell (PS) and sodium dodecyl sulfate-modified peanut shell (SDS/PS) as adsorbents. The study was aimed to evaluate the effect of SDS modification on the physicochemical character of PS and the kinetics of adsorption and adsorption capacity of PS. Instrumental characterizations consist of scanning electron microscope (SEM), Fourier Transform-Infra Red (FTIR), Boehm titration and gas sorption analyses were performed for evaluation. The results showed that SDS modification enhances the specific surface area and pore distribution. Kinetics of adsorption, adsorption isotherm, the effect of temperature, and adsorption thermodynamics were studied. It was found that in general, SDS modification enhance the adsorption rate of RhB, as well as affecting the adsorption kinetics. RhB adsorption over PS is fit to a pseudosecond-order model, while the adsorption over SDS/PS obeys Elovich kinetics model. Thermodynamic study of the adsorption kinetics was also conducted. Equilibrium study analyzed using the Langmuir, Freundlich, Temkin and Dubinin-Radushkevich (D-R) isotherms suggest that the adsorption data tend to obey D-R isotherm. The determined adsorption capacities of PS and SDS/PS are 133.146 and 236.699 meq/g.

show abstract

Batch adsorption of heavy metals (Cu, Pb, Fe, Cr and Cd) from aqueous solutions using coconut husk

Cited by 44 publications

References 13 publications

Adsorptive and Coagulative Removal of Trace Metals from Water Using Surface Modified Sawdust-Based Cellulose Nanocrystals

Adsorptive and Coagulative Removal of Trace Metals from Water Using Surface Modified Sawdust-Based Cellulose Nanocrystals

Potential of Mangifera indica activated carbon for removal of chromium and iron

Enhanced Adsorption Capacity of Peanut Shelltoward Rhodamine B via Sodium Dodecyl Sulfate Modification

Contact Info

Product

Resources

About