Potential of using kaolin as a natural adsorbent for the removal of pollutants from tannery wastewater

Mustapha, S.; Ndamitso, M. M.; Abdulkareem, A. S.; Tijani, Jimoh Oladejo; Mohammed, Abdul Kabir; Shuaib, D. T.

doi:10.1016/j.heliyon.2019.e02923

Cited by 127 publications

(67 citation statements)

References 33 publications

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“…The tannery wastewater sample was collected in a virgin 2000 cm 3 polyethene bottle from a Majematannery Industry, located at Manuri Road, Tudun Wada Area, Sokoto State, Nigeria and immediately transported to the laboratory prior for analysis. The physicochemical parameters of the wastewater samples such as pH, colour, biochemical oxygen demand (BOD), chemical oxygen demand (COD), chloride, sulphate, nitrate, turbidity, electrical conductivity, total dissolved solids (TSS) and total suspended solids (TSS) were determined according to procedures described by the American Public Health Association (APHA) 23 . Heavy metals such as iron (Fe) and chromium (Cr) were measured by Atomic Absorption Spectroscopy (AAS) (Perkin Elmer 200 Atomic Absorption Spectrophotometer).…”

Section: Methodsmentioning

confidence: 99%

The role of kaolin and kaolin/ZnO nanoadsorbents in adsorption studies for tannery wastewater treatment

Mustapha

Tijani

Ndamitso

et al. 2020

Sci Rep

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115

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In the present study, comparative studies of kaolin and kaolin/ZnO nanocomposites for the adsorption of Cr(VI), Fe(III), COD, BOD, and chloride from tannery wastewater were investigated. ZnO nanoparticles and kaolin/ZnO nanocomposites were prepared by sol-gel followed by wetimpregnation methods. The prepared adsorbents were characterized using different analytical tools such as X-ray diffraction, Fourier transforms infrared, high-resolution transmission electron microscopy, energy dispersive spectroscopy, selective area electron diffraction and Brunauer Emmett-Teller (BET) and X-ray Photoelectron Spectroscopy (XPS). The HRSEM/EDS/XPS analysis confirmed successful immobilization of clay structural network on the lattice layers of zincite hexagonal structure of ZnO nanoparticles. BET measurement showed an increase in the surface area of kaolin/ ZnO nanocomposites (31.8 m 2 /g) when compared to kaolin (17 m 2 /g). Batch adsorption studies were carried out by varying the parameters such as contact time, adsorbent dosage and temperature. The maximum removal of Cr(VI) (100%), Fe(III) (98%), COD (95%), BOD (94%) and Chloride (78%) was obtained at 15 min by kaolin/ZnO composites. While 78% Cr(VI), 91% Fe(III), 91% COD, 89% BOD and 73% Chloride were removed by kaolin under the same conditions. The kaolin/ZnO nanocomposites exhibited better adsorption performance than kaolin due to higher surface area of the former than the latter. It was found that the Jovanovic isotherm model fitted the adsorption experimental data most with the highest correlation (R 2 > 0.99) for both nanoadsorbents and indicate the occurrence of adsorption on monolayer and heterogeneous surfaces. The mechanism for the adsorption of metal ions in tannery wastewater onto the nano-adsorbents was examined using Weber Morris intra-particle diffusion model and Boyd plot which showed that the adsorption process was both intra-particle and film diffusion controlled. The thermodynamic parameters such as enthalpy change showed that that adsorption of metal ions and other parameters was feasible, spontaneous and endothermic. The ZnO/ clay nanocomposites exhibited excellent recyclable and re-useable properties even after six repeated applications and can, therefore, be applied in wastewater treatment for removal of heavy metals and other physicochemical parameters. Environmental contamination via natural and anthropogenic activities have been recognized as one of the major global problems confronting the human race and aquatic species. Industrial manufacturing processes utilize a high amount of clean water during operations and at the same time generate and discharge a large volume of untreated wastewater into water bodies. Specifically, industrial tanning process which transforms animal hides and skins into leather generate highly turbid, coloured and foul-smelling wastewater containing different organic

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Section: Methodsmentioning

confidence: 99%

The role of kaolin and kaolin/ZnO nanoadsorbents in adsorption studies for tannery wastewater treatment

Mustapha

Tijani

Ndamitso

et al. 2020

Sci Rep

Self Cite

115

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“…The influence factors of CA-Al-KABs' adsorption capacity towards CIP were systematically studied through batch adsorption experiments. The factors included the dosage of CA-Al-KABs (0.0 -0.1 g/50 mL), the initial pH of the solution (3)(4)(5)(6)(7)(8)(9)(10)(11), contact time (0-1440 min), temperature (288.15 K -308.15 K), initial concentration of CIP (20-140 mg/L), and different ionic strengths. In addition, the adsorption performance of CA-Al-KABs on different antibiotics was also studied.…”

Section: Adsorption Experimentsmentioning

confidence: 99%

“…In batch adsorption experiments, the optimal pH was obtained by evaluating the adsorption process at different pH (3)(4)(5)(6)(7)(8)(9)(10)(11). Further, CA-Al-KABs of different dosage (0.02, 0.04.…”

Section: Adsorption Experimentsmentioning

confidence: 99%

“…A large amount of different salts exist in the actual water environment, leading to the high ionic strength, which affected the adsorption performance of antibiotics. For the purpose of evaluating the anions and cations' effects on the adsorption performance of CA-Al-KABs to CIP, K + , Na + , Mg 2+ , Cl − , SO 4 2− , and CO 3 2− in the iron strength of 0-0.1 M were investigated in this experiment. As shown in Figure 4c, the adsorption effects of CA-Al-KABs to CIP was inhibited by different cations (K + , Na + , Mg 2+ ).…”

Section: Effects Of Iron Strength's Effect On Adsorption Capacitymentioning

confidence: 99%

“…It is widely accepted that kaolin is abundant in nature. Kaolin is mainly composed of kaolinite with the chemical formula of Al 2 Si 2 O 5 (OH) 4 [4] . The kaolinite was reported to be 1:1 type layer silicate with the structure of a tetrahedral sheet of silica (SiO 2 ) linked with an oxygen atom and octahedral sheet of alumina (Al 2 O 3 ) [5].…”

Section: Introductionmentioning

confidence: 99%

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Removal of Ciprofloxacin with Aluminum-Pillared Kaolin Sodium Alginate Beads (CA-Al-KABs): Kinetics, Isotherms, and BBD Model

Pan

Zheng

et al. 2020

Water

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In recent years, the problem of water pollution caused by antibiotics has attracted wide attention. The common use of antibiotics represents a threat to both human health and environmental safety. The modification of kaolin clay is promising due to its high efficiency, easy operation, and low cost. In this study, a novel material, aluminum-pillared kaolin sodium alginate beads (CA-Al-KABs), was synthesized by gelling and solidification processes. The structure and chemical properties were characterized by various analytical methods. The influencing factors (such as adsorbent dosage, contacting time, pH, ion strength, temperature, and initial concentration) and adsorption mechanism of ciprofloxacin (CIP) were studied. Furthermore, adsorption kinetics, adsorption isotherms, and a Box–Behnken design (BBD) model were conducted. Moreover, CA-Al-KABs’ adsorption efficiency towards other antibiotics were also evaluated. The adsorption experiments showed that the acidic environment (pH = 4) was more favorable for the adsorption of ciprofloxacin. The adsorption kinetics of ciprofloxacin by CA-Al-KABs microspheres were confirmed to be more suitable with the pseudo-first-order kinetics model. The Langmuir isotherm model showed that the maximum adsorption capacity of CA-Al-KABs microspheres to ciprofloxacin was 68.36 mg/g at 308.15 K. The adsorption driving force of CIP near CA-Al-KABs may be the electrostatic attraction. Further, CIP could also form complexes with Ca2+ and Al—Al—OH on CA-Al-KABs, and thus CIP was attracted to the adsorbent. Adsorption thermodynamics showed that the adsorption process was exothermic, feasible, and spontaneous. In addition, the adsorption performance on other antibiotics indicated CA-Al-KABs’ broad application in the treatment of antibiotic wastewater.

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ZnO‐doped kaolin nanoclay immobilized agar biopolymer for 2,4‐dinitrophenol photocatalytic degradation

Hasan,

Bassi,

Kalakonda

et al. 2024

Asia-Pacific J Chem Eng

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This study focuses on enhancing the properties of kaolin (Kao) clay by incorporating Zinc oxide nanoparticles (ZnO NPs) and further functionalizing with agar biopolymer, resulting in the formation of Agar/Kao@ZnO nanocomposite (NC). The synthesized material underwent comprehensive composition, structure, surface, and optical properties analysis to confirm the formation. The material was evaluated as a photocatalyst for the degradation of 2,4‐dinitrophenol (DNP) under visible light irradiation. The optimized conditions for the photocatalytic degradation of DNP were determined as irradiation time 50 minutes, pH 4, catalyst dose 20 mg, and DNP concentration of 25 mg L−1, resulting in degradation efficiency of 99.63%. Trapping experiment validated the significant role of hydroxyl (•OH) radicals as reactive oxidant species (ROS) in the degradation of DNP in the presence of visible light. Through four consecutive cycles of reusability experiments, it was confirmed that the synthesized material is highly stable and efficient for DNP degradation.

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Potential of using kaolin as a natural adsorbent for the removal of pollutants from tannery wastewater

Cited by 127 publications

References 33 publications

The role of kaolin and kaolin/ZnO nanoadsorbents in adsorption studies for tannery wastewater treatment

The role of kaolin and kaolin/ZnO nanoadsorbents in adsorption studies for tannery wastewater treatment

Removal of Ciprofloxacin with Aluminum-Pillared Kaolin Sodium Alginate Beads (CA-Al-KABs): Kinetics, Isotherms, and BBD Model

ZnO‐doped kaolin nanoclay immobilized agar biopolymer for 2,4‐dinitrophenol photocatalytic degradation

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