Poly (amidoxime) modified magnetic activated carbon for chromium and thallium adsorption: Statistical analysis and regeneration

Adio, Salawu Omobayo; Asif, Mohammad; Mohammed, A. I.; Baig, Nadeem; Al-Arfaj, Abdulrahman A.; Saleh, Tawfik A.

doi:10.1016/j.psep.2018.10.008

Cited by 63 publications

(18 citation statements)

References 40 publications

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“…The activities by the artisans in these sites have greatly polluted the soil and groundwater within and around their environs [8]. Many environmentally unfriendly chemical species like petroleum hydrocarbons [9][10][11][12][13][14][15], polychlorinated biphenyls [16], polybrominated diphenyl ethers [17], polycyclic aromatic hydrocarbons [18][19][20], anions [21][22][23] and heavy metals [24][25][26][27][28][29] from automobile repair and maintenance activities have been found in the air, soil and portable water sources in these areas.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical Assessment of Borehole Water in a Reclaimed Section of Nekede Mechanic Village, Imo State, Nigeria

2019

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The quality of borehole water in a reclaimed and about to be habited section of the Nekede mechanic village in Imo State, Nigeria, was determined. Five sampling points in this area were chosen for the study. Preliminary characterization of soil at these points using energy dispersive X-ray fluorescence method identified leachable heavy metals that can contaminate groundwater. The physical and chemical properties of the borehole water samples were analyzed using standard instrumental methods. The data obtained showed that the water samples were considerably acidic with pH ranging between 5.12 and 5.58. Lead, nickel and phosphate levels in the borehole water samples from all the sampling points were above tolerable limits and ranged between 0.22-0.42 mg/L, 1.03-1.12 mg/L and 0.14-0.34 mg/L respectively. The contamination factor model showed that all the borehole water samples were highly contaminated by lead and nickel, with values ranging between 38.00-42.00 and 14.71-16.00, respectively. The calculated Water Quality Index at all the sampling points gave values between 554.31 and 935.35 and indicated that the water samples were unsuitable for drinking. Constant consumption of borehole water from this area therefore would pose serious health risks to its intending and existing occupants.

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Section: Introductionmentioning

confidence: 99%

Physicochemical Assessment of Borehole Water in a Reclaimed Section of Nekede Mechanic Village, Imo State, Nigeria

2019

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“…121,123 In addition to using the as-prepared AC, new literature has emerged where re-activation, modication, and functionalization process of the native AC were undertaken. [125][126][127][128][129][130][131] The posttreatment of AC allows for the addition of new functional groups, increase the amount of existing functional groups, changing from one form to another (e.g., from thiol to amino) or improve on the physical attributes such as specic surface area, pore-volume, and pore size. Functional groups bearing oxygen atoms (phenolic hydroxyl, carbonyl or carboxyl groups) were produced by chemical oxidation of AC.…”

Section: àmentioning

confidence: 99%

Recent advances in hexavalent chromium removal from aqueous solutions by adsorptive methods

2019

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“…Many methods have been demonstrated to be efficient for Cr(VI) removal, such as: ion exchange [5,6], electrochemical treatment [7][8][9], chemical precipitation [10], coagulation [11], chemical reduction [12,13], and adsorption [3,[14][15][16][17]. Some biological treatments [18,19] (phytoremediation [20]) are also applied to remove chromium (VI) from wastewater and groundwater.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Removal of Chromium (VI) from Wastewater

2019

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The removal of hexavalent chromium has attracted much attention as it is a hazardous contaminant. Electrochemical reduction technology was applied to remove chromium (VI) from wastewater. The mechanisms and parameters that affect the reduction process were investigated. The results showed that the reduction efficiency was significantly affected by the concentration of H2SO4, current density, and reaction temperature. The reduction efficiency was up to 86.45% at an H2SO4 concentration of 100 g/L, reaction temperature of 70 °C, current density at 50 A/m2, reaction time at 180 min, and stirring rate of 500 rpm. The reduction process of chromium (VI) followed a pseudo-first-order equation, and the reduction rate constant could be expressed as Kobs = k [H2SO4]1·[j]4·exp−4170/RT.

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Poly (amidoxime) modified magnetic activated carbon for chromium and thallium adsorption: Statistical analysis and regeneration

Cited by 63 publications

References 40 publications

Physicochemical Assessment of Borehole Water in a Reclaimed Section of Nekede Mechanic Village, Imo State, Nigeria

Physicochemical Assessment of Borehole Water in a Reclaimed Section of Nekede Mechanic Village, Imo State, Nigeria

Recent advances in hexavalent chromium removal from aqueous solutions by adsorptive methods

Electrochemical Removal of Chromium (VI) from Wastewater

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