Azadirachta indica leaves Environmental science, engineering & technology History of engineering & technology Lemna gibba Lewatit MonoPlus TP220 SEM-EDX T. fasciculatum T. longibrachiatum Technology: general issues activated carbon adsorption adsorptive removal akaganeite nanorods amino group androgenic hormones anion bioadsorption bioadsorption mechanism bioelectrochemical systems biosorption cadmium cation date seeds desirability function desorption divalent cobalt economic evaluation endocrine disruptors heavy metals ion exchangers