Mechanistic insight into the removal of aqueous Cd using an immobilized ZIF-8 and microflora cooperative composite

Hou, Siyu; Zhang, Ming; Hou, Yuqiu; Yang, Ping

doi:10.1016/j.chemosphere.2022.133582

Cited by 13 publications

(2 citation statements)

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“…5 Cadmium, in particular, is known as one of the most hazardous heavy metals, commonly released into the environment through various industries such as paint preparation, pesticide production, electroplating, and battery production. 6 Cadmium can accumulate in the human body and cause a range of adverse health effects, including kidney damage, skeletal damage, brain malfunction, and cancer, among others. 7 In addition, cadmium poses a threat to aquatic life and other forms of wildlife.…”

Section: Introductionmentioning

confidence: 99%

“…In recent decades, industrial progress has severely impacted the environment by discharging numerous water pollutants, including organic dyes, pharmaceuticals, heavy metal ions, fluorides, etc. − Heavy metals in wastewater are a significant environmental concern because of their toxic nature and persistence in the environment, posing a significant threat to humans, animals, and plants, even at low concentrations . Cadmium, in particular, is known as one of the most hazardous heavy metals, commonly released into the environment through various industries such as paint preparation, pesticide production, electroplating, and battery production . Cadmium can accumulate in the human body and cause a range of adverse health effects, including kidney damage, skeletal damage, brain malfunction, and cancer, among others .…”

Section: Introductionmentioning

confidence: 99%

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Novel ZIF-8/CNC Nanohybrid with an Interconnected Structure: Toward a Sustainable Adsorbent for Efficient Removal of Cd(II) Ions

Mohammadi,

Jafarpour,

Mirzaei

et al. 2024

ACS Appl. Mater. Interfaces

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Water pollution, especially by heavy metals, continues to pose significant challenges, emphasizing the urgency to develop sustainable processes to remove pollutants while developing sustainable materials derived from renewable sources. In the present research, a nanoscale adsorbent was prepared to remove cadmium (Cd(II)) ions from wastewater by hybridizing zeolitic imidazolate framework-8 (ZIF-8) with a cellulose nanocrystal (CNC). The prepared nanohybrid exhibited an interconnected structure in which the ZIF-8 particles were connected to each other via CNC nanoneedles. The hybridization of ZIF-8 with CNC caused a significant enhancement in the adsorption performance of the fabricated nanohybrid compared to pure ZIF-8, increasing its adsorption capacity by nearly 36%. The adsorption of ZIF/CNC followed the Langmuir isotherm model and pseudo-second-order kinetics models, remarking homogeneous adsorption onto the surface of ZIF/CNC, where chemisorption controlled the rate of adsorption. The thermodynamic study uncovered that the adsorption is spontaneous, endothermic, and entropy-governed as the randomness was increased at the solid–liquid interface. Additionally, the influence of operating variables, such as temperature, adsorbent dosage, pH, and ionic strength, was studied to mimic the adsorption capabilities of the adsorbent in real conditions. Accordingly, the optimum conditions were found to be at 45 °C and pH = 7 with a dosage of 0.4 g/L for the adsorbent. Moreover, the adsorption in a multimetal solution showed that the ZIF/CNC nanohybrid can remove various heavy metals, including Cd(II), Fe(III), Cu(II), and Pb(II) ions simultaneously. Finally, the regeneration study confirmed the great potential of the ZIF/CNC nanohybrid, which retained 94% of its initial adsorption capacity after 5 consecutive adsorption/desorption cycles.

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Section: Introductionmentioning

confidence: 99%