Hydrothermal process is an emerging technology that contributes to sustainable production
of biomass-derived chemicals, fuels, and materials. This technology uses hot compressed …

Abstract Hexavalent chromium (Cr (VI)) contamination has gained interest from regulatory
authorities due to its high toxicity and carcinogenicity. Different approaches have been …

Environmental pollution, particularly from heavy metal ions in the wastewater, is one of the
most serious concerns of the world. In the pursuit of remedial action, various conventional …

Water pollution is one of the major environmental challenges in contemporary times. Biochar
from hydrothermal processes (known as hydrochars) has been explored as adsorbents for …

Water polluted with heavy-metal ion has been a major problem in recent years. Among
various metal ions, nickel (II) is a priority pollutant commonly found in industrial wastewater …

Arsenic (As) contamination poses a significant threat to human health, ecosystems, and
agriculture, with levels ranging from 12 to 75% attributed to mine waste and stream …

Heavy metals removal from aqueous phase by adsorption technique has recently attracted a
considerable interest. Although various adsorbing materials have been developed …

Herein, a novel polyethyleneimine (PEI) functionalized magnetic hydrochar (MHTCP-5)
adsorbent with low cost and easy recovery is unveiled, which exhibits excellent adsorption …

Chromium (VI) is a widely occurring toxic heavy metal ion in industrial wastewater that
seriously impacts the environment. In this study, we used environmentally friendly sodium …

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