Characterization of Tagaran natural clay and its efficiency for removal of cadmium (II) from Sulaymaniyah industrial zone sewage

Aziz, Bakhtyar K.; Shwan, Dler M. S.; Kaufhold, Stephan

doi:10.1007/s11356-019-06995-x

Cited by 13 publications

(3 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The values of qe rose with the initial concentrations of Cd 2+ and Co 2+ within the concentration range studied. In literature report by Bakhtyar et al [39], an increase in the concentration gradient serves as the driving force in the direction of adsorption and subsequently, results in an increase in the adsorption pending when saturation will be achieved. Rumpa et al [44] observed that the high concentration of the pollutant as contained in solution coupled with the accessibility of vacant active receptor sites present on the clay surface at the early stage of adsorption process.…”

Section: Effects Of Contact Timementioning

confidence: 99%

Chemically Activated Natural Clay as Effective Scavenger for Cd(II) and Co(II): Isotherms, Kinetics and Thermodynamic Evaluations

OFUDJE,

OGUNDIRAN,

AKANDE

et al. 2023

Preprint

View full text Add to dashboard Cite

The investigation of the impact of sulphuric acid activation on natural clay in Cd(II) and Co(II) ions scavenger from aqueous medium under various experimental factors was carried out. The clay samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray Fluorescent (XRF), X-ray diffraction (XRD). The FT-IR results revealed the presence of prominent absorption bands of kaolinite at 3695.63, 3627.52, 1113.54, 918.50, 790.40, 537.93, and 446.95 cm-1. The adsorption process of Co(II) demonstrated good correlation with pseudo-second-order kinetic for both adsorbents, while that of Cd(II) depicted better conformity with pseudo-first-order kinetic model indicating physical adsorption mechanism. The maximum adsorption capacities predicted by Langmuir isotherm for natural clay (NC) and chemically modified natural clay (CMNC) are 86.341 and 158.760 mg/g for Co2+, 78.221 and 136.671 mg/g for Cd2+ respectively with the activated clay showing better adsorption capacity. Values of thermodynamic parameter of ΔH° for NC and CMNC was estimated and found to be 2.534 x 106 and 2.309 x 106 kJ mol−1 for Co2+ and 1.020 x 106 kJ mol−1 and 1.591 x 106 kJ mol−1 for Cd2+ thus indicating endothermic process. The results derived from this present study revealed that the chemically modified natural clay is better adsorbent for the scavenger of Co(II) and Cd(II) ions in contaminated water over natural clay.

show abstract

Section: Effects Of Contact Timementioning

confidence: 99%

Chemically Activated Natural Clay as Effective Scavenger for Cd(II) and Co(II): Isotherms, Kinetics and Thermodynamic Evaluations

OFUDJE,

OGUNDIRAN,

AKANDE

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…The useful properties of bentonite clay and shungites are defined by specific structural features and unique ion-exchange capacity. Sorbents of natural origin are characterized by high sorption capacity and good ion-exchange properties [Aziz et al, 2019].…”

Section: Introductionmentioning

confidence: 99%

Waste Water Purification from Metal Ions by Ultra-Dispersed Natural Sorbents

Yerbolov¹,

Daumova²

2022

J. Ecol. Eng.

View full text Add to dashboard Cite

This work is devoted to mine wastewater purification from metal ions, such as copper, zinc, lead, cadmium, iron, and manganese. The rationale was provided for the possibility to purify the wastewater from metal ions with nonactivated and ultra-dispersed natural sorbents. The adsorption capacity of bentonite clay from Tagan deposit and shungite from Koksui deposit of the Republic of Kazakhstan was studied on the basis of its fraction composition. It was found that the most effective method of sorbents modification was mechanical activation. The comparative studies of metal ions adsorption efficiency were carried out with mechanically activated and ultra-dispersed bentonite clay and shungite. The experiment enabled to find out that ultra-dispersed bentonite clay is prospective for use in order to deeply purify multicomponent mine wastewater. The highest degree of metal ions extraction was achieved due to 30-minutes contact of wastewater.

show abstract

“…A high specific surface area coupled with high reactivity makes clays promising solutions for this rising environmental concern (Cavallaro et al 2020). In this special issue, an article by Aziz et al (2019) presents research work on the effectiveness of a natural saponite from the Sulaimani region of Iraq for the removal of cadmium (Cd) from industrial wastewater. The authors performed adsorption experiments under varying conditions, which showed the high potential of saponite for the removal of Cd 2+ in real wastewater samples.…”

mentioning

confidence: 99%