Betel nut husk, a genre of palm, constitutes fibrous part of the fruit. The activated carbon is prepared from the betel nut husk and its lingo cellulosic composition was employed as bio-adsorbent for treatment of water effluent which was contaminated with Basic Red 22 (BR22) dyes. Activated Betel nut husk carbon (BNHC) was proximally analyzed for suitability of its surface for the adsorption phenomenon after its physical and chemical activation by phosphoric acid. The optimum surface area was found to be 312 m2/g after using BET method for surface analysis. The spectral scans such as FTIR, XRD and also SEM images have been garnered to assess the functional groups; changes in surface structure and crystalline nature respectively were implied to evaluate qualitatively the adsorption of dye. The scans for the surface of activated BNHC were recorded pre and post adsorption of dye. Analysis had revealed the alteration in the FTIR pattern in finger print region, SEM images and lines in XRD which can be related with efficient adsorption of dye particles on the interface of adsorbent. Therefore, activated betel nut husk carbon had been proved to be a potential non-conventional bio adsorbent for the uptake of Basic Red 22 dye from the aqueous solution.