Nowadays, due to the economic and industrial development, water contaminated with heavy
metals is a significant concern and one of the acute global environmental problems …

Chromium originates from geogenic and extensive anthropogenic activities and significantly
impacts natural ecosystems and human health. Various methods have been applied to …

Adsorption is one of the oldest and extensively studied techniques for water and wastewater
treatment. As a surface phenomenon, adsorption efficiency relies heavily on the surface …

Various conventional adsorbents such as metal–organic framework (MOF), zeolites,
commercial activated carbon, activated alumina, and metal oxides are being used to capture …

Contamination of water by hexavalent chromium generated from man–made activities
remains one of the challenges for environmental pollution. Activated carbon impregnated …

A growing need to reduce the global carbon footprint has prompted all sectors to make
significant efforts in this direction. For example, there has been much focus on green carbon …

Modification of activated carbon is considered as an effective process to enhance its
adsorptive characteristics. The KOH activated carbons prepared from elm tree waste were …

The adsorbent material selected for this study was microporous activated carbon prepared
by physical activation from pistachio shells (PS). X-ray diffraction (XRD), Fourier transform …

This work focuses on the efficiency of the response surface methodology to optimize the
parameters affecting the chromium removal by biosorption on orange peels. A Doehlert …

Few studies that reported on black cumin seeds (BS) showed that the material has good
adsorption capacity towards metal ions. Therefore, it is fair to conduct further studies on the …