PUTRI ANJANI, RIZKY. “PENENTUAN MASSA DAN WAKTU KONTAK OPTIMUM ADSORPSI KARBONGRANULAR SEBAGAI ADSORBEN LOGAM BERAT Pb(II) DENGAN PESAINGION Na+DETERMINATION OF OPTIMUM MASS AND THE TIME CONTACT OF THEGRANULAR ACTIVATED CARBON ADSORPTION USED FOR ADSORBENTTO REMOVAL HEAVY METAL Pb(II) WITH COMPETITOR ION Na+”. Unesa Journal of Chemistry, vol. 3, no. 3, Oct. 2014, doi:10.26740/ujc.v3n3.p%p.