TY - JOUR AU - Eirene Fransina AU - Jolantje Latupeirissa AU - Quendeline Stefanus PY - 2018/01/11 Y2 - 2024/03/29 TI - WAKTU KONTAK DAN pH OPTIMUM SISA BUANGAN BATU BATA TERAKTIVASI di-(2-ethylhexcyl) phosphate acid (D2EHPA,) SEBAGAI PENJERAP Pb 2+ JF - Molluca Journal of Chemistry Education (MJoCE) JA - MJoCE VL - 8 IS - 1 SE - Articles DO - 10.30598/MJoCEvol8iss1pp7-11 UR - https://ojs3.unpatti.ac.id/index.php/mjoce/article/view/2208 AB - Determination of optimum pH and contact time, of broken brick from Latuhalat village as adsorbent of Pb2+ through impregnation with di-(2-ethylhexcyl) phosphate acid (D2EHPA) has been done. Bricks impregnated with di-(2-ethylhexcyl) phosphate acid concentration of 700 ppm to enlarge the surface area of ​​adsorption on bricks. The result of analysis using AAS show that optimum contact time is 3 hours, optimum pH is 8, with weight of adsorbent is 0,2 g, adsorbate concentration is 100 ppm and adsorption capacity is 49,9985 mg/g adsorbent. ER -