Polycarpaea corymbosa (L) Lam, is a weed which belongs to Caryophyllaceae family is seen throughout India. It is distributed in tropical Asia and Australia. It is quite common in Gujarat is waste lands and in cultivated fields. It is a small, erect annual herb. Simple or branched woody at base. Stem and branches slender and faintly terete. Pale green in colour and pubescent in younger parts. Le...

In this study, ryegrass straw agricultural residue (Lolium multiflorum L.) was employed as an adsorbent material to remove methylene blue (MB) dye from aqueous solutions. Four adsorbents were produced using phosphoric acid and pyrolysis activating agents. The samples analyzed with TGA, FTIR, SEM, XRD techniques. A rapid adsorption of the MB obtained treated 40% H3PO4, reaching equilibrium in 2 ...