Nano- and microplastics in the environment: a potential threat to in-situ bioremediation of wastewaters

Ghaffar, Imania; Javid, Arshad; Bukhari, Syed Mohsin; Ali, Waqas; Hashmi, Syed Ghulam Mohayud Din; Hussain, Ali

doi:10.1016/b978-0-323-90463-6.00003-8

Cited by 1 publication

(1 citation statement)

References 84 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pollution comes from farms, households, and hospitals whose wastewater contains various pollutants [1]. These pollutants include pharmaceutical degradation products, both biodegradable and non-biodegradable compounds, pathogenic bacteria, and metals (such as cadmium (Cd), copper (Cu), lead (Pb), zinc (Zn), and mercury (Hg)) [2,3]. However, heavy metal pollution of water and soil has gradually become a problem in recent years and can pose a serious threat to human health if left untreated [4].…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis and Efficient Adsorption: Na-X Zeolite vs. C/Mn/SiO2 Composite for Heavy Metals Removal

Medykowska,

Wiśniewska,

Szewczuk-Karpisz

et al. 2024

Materials

View full text Add to dashboard Cite

The studies aimed to test the adsorption capacity of two silica-enriched porous materials, synthetic Na-X zeolite and Mn-containing carbon composite, towards Pb(II) and Zn(II) ions in single and mixed systems and in the presence of diclofenac (DCF) and (or) poly(acrylic acid) (PAA). The synthetic zeolite was characterized by a well-developed surface area of 728 m2/g and a pore diameter of 1.73 nm, while the carbon composite exhibited 268 m2/g and 7.37 nm, respectively. Na-X was found to be more efficient than the carbon composite (75–212 mg/g) in adsorbing heavy metal ions in both single and bimetallic systems (322–333 mg/g). In turn, the C/Mn/SiO2 composite was more effective in removing Pb(II) ions from the systems that simultaneously contained DCF or PAA (480 and 476 mg/g, respectively). The Na-X zeolite demonstrated the greatest stability in all the systems studied. The highest stability was observed in the DCF + Pb(II) mixture, in contrast to the carbon composites where the stability was much lower. To evaluate the possibility of regeneration of the solids, HCl proved to be the best desorbent for heavy metal ions (efficiency of 99%). In general, both adsorbents offer promising potential for solving environmental problems.

show abstract

Section: Introductionmentioning

confidence: 99%