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Optimum ph for different heavy metal removal in magnetic separator

Sep 11, 2019 Moreover, effects of different parameters including pH (2–9), contact time (5–120 min), temperature (25 C–55 C), initial Cr(VI) ion concentration (10–50 mg l −1), and adsorbent dosage (0.01–0.07g) were checked and the maximum removal efficiency of 99.5% was obtained under optimal conditions (pH = 4, contact time = 90 min

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