Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 353, P. 128310 - 128310
Published: June 6, 2024
Language: Английский
RSC Advances, Journal Year: 2023, Volume and Issue: 13(26), P. 17595 - 17610
Published: Jan. 1, 2023
Heavy metal contamination of water sources has emerged as a major global environmental concern, threatening both aquatic ecosystems and human health. pollution in the environment is on rise due to industrialization, climate change, urbanization. Sources include mining waste, landfill leachates, municipal industrial wastewater, urban runoff, natural phenomena such volcanic eruptions, weathering, rock abrasion. ions are toxic, potentially carcinogenic, can bioaccumulate biological systems. metals cause harm various organs, including neurological system, liver, lungs, kidneys, stomach, skin, reproductive systems, even at low exposure levels. Efforts find efficient methods remove heavy from wastewater have increased recent years. Although some approaches effectively contaminants, their high preparation usage costs may limit practical applications. Many review articles been published toxicity treatment for removing wastewater. This focuses main pollution, chemical transformation, toxicological impacts environment, harmful effects ecosystem. It also examines advances cost-effective techniques physicochemical adsorption using biochar zeolite ion exchangers, well decomposition complexes through advanced oxidation processes (AOPs). Finally, advantages, applications, future potential these discussed, along with any challenges limitations that must be considered.
Language: Английский
Citations
366
Advances in Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 329, P. 103196 - 103196
Published: May 19, 2024
Language: Английский
Citations
49
Bioresource Technology Reports, Journal Year: 2024, Volume and Issue: unknown, P. 101982 - 101982
Published: Oct. 1, 2024
Language: Английский
Citations
19
Cleaner Engineering and Technology, Journal Year: 2025, Volume and Issue: 24, P. 100879 - 100879
Published: Jan. 5, 2025
Language: Английский
Citations
3
Environmental Monitoring and Assessment, Journal Year: 2024, Volume and Issue: 196(5)
Published: April 4, 2024
Carbonaceous materials produced from agricultural waste (palm kernel shell) by pyrolysis can be a proper type of low-cost adsorbent for wide uses in radioactive effluent treatment. In this context, the as-produced bio-char (labeled as PBC) and its sub-driven sulfuric acid zinc oxide activated carbons PBC-SA, PBC-Zn respectively) were employed adsorbents uranium sorption aqueous solution. Various analytical techniques, including SEM (Scanning Electron Microscopy), EXD (X-ray Diffraction), BET (Brunauer-Emmett-Teller), FTIR (Fourier Transform Infrared Spectroscopy), Zeta potential, provide insights into material characteristics. Kinetic isotherm investigations illuminated that process using three sorbents is nicely fitted with Pseudo-second-order-kinetic Langmuir models. The picked data display equilibrium time was 60 min, maximum capacity 9.89, 16.8, 21.9 mg/g PBC, respectively, which reflects highest affinity oxide, bio-char, among adsorbents, taking out wastewater. Sorption thermodynamics declare U(VI) an exothermic, spontaneous, feasible process. About 92% uranium-loaded sorbent eluted 1.0 M CH
Language: Английский
Citations
12
npj Clean Water, Journal Year: 2024, Volume and Issue: 7(1)
Published: June 15, 2024
Abstract
In
the
path
of
walking
on
road
sustainable
and
eco-friendly
production
methods
for
manufacturing
nanomaterials
utilizing
them
in
environmental
applications,
this
article
deals
with
prosperous
synthesis
a
biogenic
cyclam-functionalized
homologous
SBA-15
(BCFH-SBA-15).
For
purpose,
agricultural
waste
extensively
consumed
sorghum
was
used
as
rich
source
silica
preparation
BCFH-SBA-15
bimodal
micro-mesoporous
architecture
substantial
surface
area
325
m
2
g
–1
through
simple
one-pot
environmentally
friendly
approach.
The
material
structurally
characterized
use
different
instrumental
analyses
such
XRD,
FTIR,
FESEM,
TEM,
nitrogen
adsorption/desorption
isotherms.
proved
to
be
highly
efficient
adsorbing
Ni(II)
aqueous
solutions,
confirmed
by
most
reliable
classical
models
utilized
determining
isotherm,
thermodynamic,
kinetic
adsorption
parameters.
Langmuir
isotherm
model
provided
accurate
representation
experimental
results,
it
calculate
maximum
capacity
under
optimal
conditions
(pH
=
6.0,
adsorbent
dose
3.00
mg,
contact
time
20
min).
at
four
temperatures
298,
303,
308,
313
K
estimated
243.36,
253.87,
260.95,
266.28
mg
,
respectively;
surpassing
previously
reported
adsorbents
adsorption.
thermodynamic
data
indicated
strong
chemisorption
(
$${\triangle
H}_{{\rm{ads}}.}^{\circ
}$$
Language: Английский
Citations
9
International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(6), P. 2639 - 2639
Published: March 14, 2025
This study investigates the simultaneous adsorption of Pb(II), Cu(II), Cd(II), and Zn(II) ions from aqueous solutions using Urtica dioica leaves (UDLs) modified with sulfuric acid, followed by heat treatment to enhance adsorptive properties. The significantly increased adsorbent’s specific surface area 451.93 m2·g−1. Batch experiments were performed determine influence contact time, pH solution, adsorbent dosage, temperature, initial metal concentration on efficiency. material (modified UDLs) was characterized X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), photoelectron (XPS). Maximum removal efficiencies determined as 99.2%, 96.4%, 88.7%, 83.6% for ions, respectively. Adsorption isotherms kinetics revealed that process follows Langmuir equation pseudo-second-order models, indicating monolayer chemisorption mechanisms. Furthermore, thermodynamic analysis indicated processes are spontaneous endothermic in nature. competing multiple heavy metals also discussed. results suggest acid heat-treated can offer a promising, low-cost, eco-friendly removing contaminated water.
Language: Английский
Citations
1
Discover Water, Journal Year: 2024, Volume and Issue: 4(1)
Published: June 11, 2024
Abstract Bioadsorption using agricultural waste offers a promising approach for removing toxic metals from wastewater. This study explores the potential of chemically activated banana peels (BPs) as green and cost-effective bioadsorbent Cu(II) Zn(II) removal. Fourier-transform infrared (FTIR) spectroscopy revealed presence functional groups like alcohols, phenols, amino acids on BPs, potentially responsible metal ion binding. Scanning electron microscopy (SEM) with energy-dispersive X-ray (EDS) confirmed cavities BPs surface existence oxygen potassium. The adsorption capacity was investigated under various conditions, including pH, contact time, sorbent dosage, concentration, temperature. used Langmuir, Freundlich, Tempkin, Dubinin–Radushkevich (D–R) isotherm models to describe equilibrium results Cu (II) Zn adsorption. Langmuir model best described process, suggesting monolayer coverage ions surface. Maximum capacities were 3.2 mg g −1 2.8 Zn(II), demonstrating effectiveness in Kinetic studies indicated pseudo-first-order (PFO) behavior pseudo-second-order (PSO) Thermodynamic analysis spontaneous exothermic process (negative Gibbes free energy (ΔG°) enthalpy (ΔH°) decreased randomness [negative entropy (ΔS°)] at biosorption interface. Finally, successfully applied remove different real wastewater samples collected El Wadi drain.
Language: Английский
Citations
7
Earth and environmental sciences library, Journal Year: 2024, Volume and Issue: unknown, P. 237 - 271
Published: Jan. 1, 2024
Language: Английский
Citations
6
International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: unknown, P. 139280 - 139280
Published: Dec. 1, 2024
Language: Английский
Citations
6