Batch Adsorption and Column Transport Studies of 2,4,6-Trinitrotoluene in Chinese Loess

Enhancing mechanism of arsenic(iii) adsorption by MnO2-loaded calcined MgFe layered double hydroxide

“…Langmuir (eqn (3)) and Freundlich (eqn (4)) adsorption isotherm models were sued to evaluate the adsorption capacity at different temperatures. 30 The equations are expressed as follows.where q (mg g −1 ) is the adsorption capacity of the target pollutants in the adsorption equilibrium, q m (mg g −1 ) is the adsorption capacity of the mixture for target pollutants, C e (mg L −1 ) is the equilibrium concentration of As( iii ) on the clay composites, n is a characteristic constant related to the adsorption strength or favourable adsorption degree, and lastly, K L (L mg −1 ) and K F (mg g −1 ) are the Langmuir and Freundlich constants, respectively. The adsorption type can be preliminarily determined according to K L .…”

“…Langmuir (eqn (3)) and Freundlich (eqn ( 4)) adsorption isotherm models were sued to evaluate the adsorption capacity at different temperatures. 30 The equations are expressed as follows.…”

Batch and column tests study on coexistence of TNT and aniline enhancing their Transports in Chinese loess

“…Meanwhile, lots of studies have been done and proved that loess had potential as a promising adsorbent to adsorp numerious pollutants including organic pollutants ( ie. TNT, aniline, toluene and naphthalene) (Zhou et al 2019, Shang et al 2020), and heavy metals (i.e. Cd, Pb and Zn) (Tang et al 2009; Wang et al 2009; Wang et al 2021).…”

“…These stock solutions were stored in brown bottles in the shadows to prevent photolysis, and NaN 3 was added at 300mg/L to prevent biodegradation. These treatments are reported by Zhou et al (2019 and. All chemicals are of analytical grade.…”

“…The similar treatments were done for aniline and its coexistence with TNT. These treatments are reported in the references (Zhou et al 2019;). NaN 3 was added at 300 mg/L.…”