Removal of Hydrolyzable and Condensed Tannins from Aqueous Solutions by Electrocoagulation Process

Removal of chlorophyll and tannins from Anthocleista schweinfurthii Gilg leaves by electrocoagulation using iron electrodes: optimization using response surface methodology

“…). These results corroborate those obtained by several researchers who showed that electrocoagulation not only eliminated chlorophyll but also eliminated some phenolic compounds and tannins …”

“…These results corroborate those obtained by several researchers who showed that electrocoagulation not only eliminated chlorophyll but also eliminated some phenolic compounds and tannins. 9,11,12 Total phenols content (TPC) According to TPC supporting electrolyte concentration, ethanol percentage and electrolysis time were significant (P < 0.05) in first-order linear effect, second-order quadratic effect and interactive effect. The coefficient of determination (R 2 ) of the predicted models in this response was 95.66%.…”

“…Several works on the isolation and recovery of some metabolites in the plants extracts by electrocoagulation have been already carried out . Few researches have been devoted to tannins removal and chlorophyll removal (CR) . However, the research exhibited weak CRs, in spite of the high current intensities and long electrolysis times, which could induce high energy costs .…”

“…[6][7][8][9][10] Few researches have been devoted to tannins removal and chlorophyll removal (CR). 7,8,[11][12][13][14] However, the research exhibited weak CRs, in spite of the high current intensities and long electrolysis times, which could induce high energy costs. [6][7][8][9][10] These results may be ascribed to the fact that the authors did not optimize the operating conditions that govern chlorophyll and tannins removals.…”

Tannery Wastewater Recalcitrant Compounds Foster the Selection of Fungi in Non-Sterile Conditions: A Pilot Scale Long-Term Test

“…Since the flow rate of highly concentrated recalcitrant COD of tanning bath is very small compared to overall effluent flow rate, a segregation of waste streams for treatment, as proposed in the present study, could be beneficial, even though rarely applied [ 36 ]. In the literature, other authors suggest vegetable tanning bath treatment based on nanofiltration, ultrafiltration [ 37 ], electrocoagulation process [ 38 ], treatment with ozone [ 39 ], precipitation and adsorption [ 40 ]. Even though these alternative treatments of the separated tanning bath are possible, the technology based on fungal biomass could provide advantages from environmental and economic point of view, including low operational costs; the acid tanning baths pH could reduce chemicals consumption to maintain pH setpoint.…”