Bacterial xanthan and ramnolipid simultaneous production using industrial oil produced water

Degradation of BTEX in groundwater by nano-CaO2 particles activated with L-cysteine chelated Fe(III): enhancing or inhibiting hydroxyl radical generation

“…For instance, citric acid (CA), tartaric acid (TA), oxalic acid (OA), glutamic acid (Glu), and ethylenediaminetetraacetic acid (EDTA) were introduced to the iron activation of the Fenton process to prevent iron precipitation and accelerate iron recycling (Huang et al 2016;Hu et al 2018;Yuan et al 2019;Bai et al 2020). L-cysteine (L-cys), a sulfur-containing non-phenolic amino acid, also exhibits Fe(III)-reducing activity owing to the actively functional sulfhydryl group (-SH) (Lu et al 2020;Ramos et al 2020). A rapid transformation from Fe(III) to Fe(II) in the presence of L-cys can happen, and at the same time the oxidation of L-cys to cystine (Equation ( 1)) (Luo et al 2016).…”