NATURAL ADSORBENTS; AN ECO-FRIENDLY SOLUTION FOR THE REMOVAL OF PH, TDS, DO, BOD & COLOR FROM THE TEXTILE EFFLUENT - Md. Shak Sadi a, Burhan Uddin Banna *b, Kazi Md Hasanul Haque b, Md. Bright Bin Abdullah b, Md. Mosfaqur Rahman Khan b , Mohammad Saifur Rahman b (2018)