Electrolysis-Induced Insitu Coagulant for Turbidity Removal
摘要
Surface water is a common source of drinking water worldwide. One of the major problems associated with surface water is turbidity, which makes treatment more difficult and requires effective solutions. The most common method for treating turbidity is coagulation, which requires the use of additional chemicals. However, for developing countries, importing these high-cost chemicals is challenging due to ongoing economic crises. In this context, the in-situ generation of coagulants presents a viable solution, allowing for effective water treatment without the need for costly external chemicals. This study investigated an innovative in-situ solution: electrolysis-induced coagulation synthesis for effective turbidity removal. The experimental methodology utilized an electrolysis setup with aluminium electrodes as the anode and stainless-steel electrodes as the cathode. The dissolved aluminum ions from the anodes act as coagulants, enhancing suspended particle collection. When aluminum ions are the only component used, the coagulation mechanism is more focused and direct, increasing efficiency and preventing the addition of extraneous materials to the treated water. High removal efficiencies have been observed in the study across different initial turbidity levels, commonly exceeding 85% and frequently achieving rates as high as 98%. The 150 mA is considered the best current after considering the best possible trade-offs between pH stability, turbidity removal efficiency, and residual aluminium concentration. Based on the initial and final turbidity levels, the best pH range for reducing turbidity was 6.5 to 8.5. The technique shows some instability at low initial turbidity levels, indicating that higher turbidity levels may be the most effective conditions under which the method works. The approach not only offers a technically strong and effective way to remove turbidity, but it also addresses the growing need for water treatment technologies that are both economically and environmentally feasible.