Coagulant from Leucaena leucocephala for Chromium Removal

3rd International Conference on Global Sustainability and Chemical Engineering

工业技术;化学工业

Abd Razak, N.H.^1 ; Khairuddin, N.^1 ; Ismail, K.N.^1 ; Musa, M.^1

Faculty of Chemical Engineering, Universiti Teknologi Mara, Malaysia^1

关键词: Biological oxygen demand;    Chromium contents;    Chromium removal;    Coagulant dosage;    Leucaena leucocephala;    Malaysia;    Optimum pH;    Suspended solids;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/358/1/012025/pdf
DOI  :  10.1088/1757-899X/358/1/012025

学科分类：工业工程学

来源: IOP

【 摘 要 】

This research investigated the effectiveness of leucaena leucocephala as a natural coagulant for chromium removal. Leucaena leucocephala is a permanent non-climbing shrub tree which is wild and abundant in Malaysia and commonly known as petai belalang. Coagulation experiment using jar test were performed where the effect of coagulant dosage and pH were examined. The parameters investigated were suspended solid (SS), chemical oxygen demand (COD), biological oxygen demand (BOD), turbidity and chromium content. The optimum of leucaena leucocephala coagulant dosage for removal of suspended solid, turbidity, COD, BOD and Chromium is at range 400-600 mg/L which yielded 45, 31.4, 38.5, 27.5 and 4.05% removal respectively. While the optimum pH is at pH 2-4 (acidic) which give 33.3, 26.8, 33.75, 31.4 and 14.06% removal of suspended solid, COD, BOD, turbidity and chromium content respectively. It is concluded that the leucaena leucocephala showed tremendous potential for chromium removal.