Characterization of cobalt ferrite-supported activated carbon for removal of chromium and lead ions from tannery wastewater via adsorption equilibrium

Yahya, Muibat Diekola; Obayomi, Kehinde Shola; Abdulkadir, Mohammed Bello; Iyaka, Y. A.; Olugbenga, Adeola Grace

doi:10.1016/j.wse.2020.09.007

Cited by 72 publications

(25 citation statements)

References 42 publications

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“…Meanwhile, the epoxy CO extension vibration peak can also be found at 1240 cm −1. 46,47 After surface modification, the CH stretching vibration peak can be found at 2921 and 2852 cm −1 48,49 in the FTIR spectrum of m‐GO. Meanwhile, the epoxy CO peak disappears and amide groups peak occurs at 1446 cm −1 in m‐GO FTIR spectrum, 50 which further confirms the successful modification of hexadecylamine on GO surface 51 .…”

Section: Resultsmentioning

confidence: 96%

Enhanced wear resistance of ultra‐high molecular weight polyethylene fibers by modified‐graphite oxide

Wang

Quan

et al. 2021

J of Applied Polymer Sci

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A simple and feasible method to enhance the wear resistance of ultra-high molecular weight polyethylene (UHMWPE) fibers was reported. The graphite oxide (GO) prepared using improved Hummer's method was surface modified with hexadecylamine to improve its compatibility with UHMWPE. Combined with well-dispersion of modified-GO (m-GO) in dichloromethane and the fact that the viscosity of UHMWPE suspension can be decreased by dichloromethane, the well dispersed m-GO/dichloromethane was added into UHMWPE suspension to improve m-GO dispersion in UHMWPE fibers. Finally, UHMWPE fibers with different m-GO concentration were prepared using gel spinning technology. The effect of m-GO concentration on the structure and properties of modified UHMWPE fibers were investigated. The results indicated that the melting temperature and crystallinity of m-GO modified UHMWPE fibers increased with increasing of m-GO concentration, while the fiber's crystal sizes and orientation increased, thus the tensile strength of m-GO modified UHMWPE fibers remained almost undamaged. The introduction of m-GO is beneficial to the formation of smooth transfer film on fiber's surface, which enhanced the self-lubrication of UHMWPE fibers. Compared with pure UHMWPE fiber, the UHMWPE fiber containing 1.5 wt% m-GO had enhanced wear resistance by 55.4% and still maintained high tensile strength of 29.98 cN dtex −1 .

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Section: Resultsmentioning

confidence: 96%

Enhanced wear resistance of ultra‐high molecular weight polyethylene fibers by modified‐graphite oxide

Wang

Quan

et al. 2021

J of Applied Polymer Sci

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“…The maximum removal effi ciency was found to be 98.97% [73]. About 98.2% for Cr and 96.4% for Pb (II) ions removal effi ciencies have been found in a recent study where cobalt ferrite-supported acti vated carbon was used for adsorpti on [74].…”

Section: Adsorptionmentioning

confidence: 71%

Probable Ways of Tannery’s Solid and Liquid Waste Management in Bangladesh ‒ An Overview

Saha

2021

TLR

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The leather industry has been marked as a top-priority sector due to its potential growth and economical contribution in Bangladesh. However, these industries are unable to meet the compliance issue due to the environmental pollution. Leather processing is a complex process based on chemicals and mechanical methods. A substantial amount of solid and liquid wastes is generally produced during the production of leather. As most of the tanneries do not have a central effluent treatment plant and advanced management technologies, they produce 20000 m3 of liquid waste and 232 tonnes of solid waste per day in Bangladesh, which poses a significant risk to the environment and human health unless it gets well treated. In this modern era, it is indispensable to implement new technologies to treat liquid waste properly as well as innovative disposal techniques for solid waste to reduce pollution and health hazards. This study, by using a non-systematic approach based on literature reviews, is designed to summarize the kinds of solid and liquid waste management techniques around the world which should be implemented in the tanneries of Bangladesh to mitigate environmental pollution. We hope that this study can be a great resource and provide a pathway for leather industries in Bangladesh to get familiar with effective treatment technologies of solid and liquid wastes.

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“…Further changes in dose did not affect percentage adsorption. Muibat et al (2020) employed cobalt ferritesupported activated carbon and showed chromium removal efficiency that attained equilibrium in 80 min at pH around 5. The maximum adsorption capacity of the material was approximately 23.6 mg/g following Freundlich isotherm model fitting with an R 2 of 0.94 (Muibat et al, 2020).…”

Section: Effects Of Contact Time Adsorbent Doses Ph and Initial Chromium Concentrationmentioning

confidence: 99%

“…Muibat et al (2020) employed cobalt ferritesupported activated carbon and showed chromium removal efficiency that attained equilibrium in 80 min at pH around 5. The maximum adsorption capacity of the material was approximately 23.6 mg/g following Freundlich isotherm model fitting with an R 2 of 0.94 (Muibat et al, 2020). The requirement of chromium reduction on the bio-adsorbent dose was studied at pH 4.8 in 50 ml of chromium synthetic wastewater at room temperature for more than 1 h in the range of 0.05-0.215 mg/L adsorbent dosage.…”

Section: Effects Of Contact Time Adsorbent Doses Ph and Initial Chromium Concentrationmentioning

confidence: 99%

Sustainable Chromium Recovery From Wastewater Using Mango and Jackfruit Seed Kernel Bio-Adsorbents

Giri¹,

Shah²,

Srivastava

et al. 2021

Front. Microbiol.

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Wastewater is a rich source of valuable chemicals of industrial importance. However, their economic recovery is crucial for sustainability. The objective of the present work is to recover hexavalent chromium (Cr VI) as a value-added transition metal from wastewater cost-effectively; the biosorbent derived from seed kernels of mango (M) and jackfruit (JF) were applied for removing the metal from simulated wastewater. The functional groups of the biomass were analysed with the help of Fourier transform infrared (FTIR) spectroscopy, micrographs were generated using a scanning electron microscope, and crystallinity was determined by an x-ray diffractometer (XRD). The concentration of Cr VI in wastewater was analysed by an inductively coupled plasma optical emission spectrometer (ICP-OES). Process parameters (pH, dose, contact time, temperature, and initial concentration) were optimized for efficient Cr VI adsorption using a response surface methodology-based Box–Behnken design (BBD) employing Design-software 6.0.8. The batch experiment at room temperature at pH 4.8 and Cr VI removal ∼94% (M) and ∼92% (JF) was achieved by using a 60-mg dose and an initial Cr (VI) concentration of 2 ppm in 120 min. The equilibrium Cr binding on the biosorbent was well explained using Freundlich isotherm (R2 = 0.97), which indicated the indirect interactions between Cr (VI) and the biosorbent. Biosorption of Cr (VI) followed the pseudo-order and intra-particle diffusion models. The maximum adsorption capacity of the M and JF bio-adsorbent is 517.24 and 207.6 g/mg, respectively. These efficient, cost-effective, and eco-friendly biosorbents could be potentially applied for removing toxic Cr (VI) from polluted water.

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Characterization of cobalt ferrite-supported activated carbon for removal of chromium and lead ions from tannery wastewater via adsorption equilibrium

Cited by 72 publications

References 42 publications

Enhanced wear resistance of ultra‐high molecular weight polyethylene fibers by modified‐graphite oxide

Enhanced wear resistance of ultra‐high molecular weight polyethylene fibers by modified‐graphite oxide

Probable Ways of Tannery’s Solid and Liquid Waste Management in Bangladesh ‒ An Overview

Sustainable Chromium Recovery From Wastewater Using Mango and Jackfruit Seed Kernel Bio-Adsorbents

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