Sairan, N. S. ., Subki, N. S. ., & Nik Yusoff, N. R. . (2019). Removal of Pb(II), Fe(II) and Zn(II) using activated carbon produced from foxtail palm fruit chemically activated by KOH and H3PO4. Journal of Tropical Resources and Sustainable Science (JTRSS), 7(1), 19–22. https://doi.org/10.47253/jtrss.v7i1.501