Electrochemical harvesting of Chlorella sp.: Electrolyte concentration and interelectrode distance

Abstract

Two modes of electrochemical harvesting for microalgae were investigated in the current work. A sacrificial anode (aluminum) was used to study the electrocoagulation-flotation process, and a nonsacrificial anode (graphite) was used to investigate the electroflotation process. The study inspected the effect of chloride ions concentration and the interelectrode distance on the performance of the electrochemical harvesting processes. The results demonstrated that both electrodes achieved maximum harvesting efficiency with a 2 g/L NaCl concentration. Interestingly, by increasing the NaCl concentration to 5 g/L, the harvesting efficiency reduced dramatically to its lowest value. Generally, the energy consumption decreased with increasing of NaCl concentration. Moreover, the energy consumption achieved with aluminum anodes is lower than that achieved with graphite. However, by increasing the gap between the electrodes from 15 mm to 30 mm, the time required to achieve the maximum efficiency doubled, and energy consumption increased consequently.

The feasibility of utilizing microwave-assisted pyrolysis for Albizia branches biomass conversion into biofuel productions

“…(Nishu et al 2020;Vichaphund et al 2019). Enormous type of biomass can be utilized as a source of biofuel, such as food and feed grains (Nonhebel & Kastner, 2011), lingo-cellulosic biomass (Yogalakshmi et al 2022), forest biomass (Wang et al 2020), industrial and municipal waste (Greinert et al 2019) and algal biomass (Al-Yaqoobi et al 2021;Al-Yaqoobi & Al-Rikabey, 2023). Albizia lebbeck (A.L.…”