Imran, K., D. Ahmed, and N. Zahra. “FACTORS AFFECTING COPPER REMOVAL FROM SIMULATED WASTEWATER USING RICE HUSK ASH AS AN ADSORBENT”. International Journal of Research -GRANTHAALAYAH, vol. 4, no. 2, Feb. 2016, pp. 52-61, doi:10.29121/granthaalayah.v4.i2.2016.2812.