Archidendron jiringa seed peel extract in the removal of lead from synthetic residual water using coagulation-flocculation process

Abstract

Archidendron jiringa seed peel extract was used to aid the coagulation-flocculation process to ultimately remove lead from synthetic residual water. The effectiveness of this method was studied to obtain an alternative approach that is easy to be handled with low cost and energy in removing the lead from residual water. Optimum parameters were analyzed to determine the effectiveness of lead removal, including pH, alum dose, and A. jiringa seed peel extract dose. A study on the coagulation-flocculation process with and without the aid of A. jiringa was also conducted. The optimum pH, the alum dose, and the A. jiringa seed peel extract dose were 9.0, 2.44 g/l, and 60.2 mg/l, respectively. The percentage of lead removal with the aid of A. jiringa seed peel extract was 79%, and the percentage was dropped to only 47% without the extract. A significantly higher rate in the coagulation-flocculation process due to the presence of A. jiringa seed peel extract proved its effectiveness in removing lead from wastewater.

Characterisation of a novel “glyco-organochlorine” bioflocculant produced from Pseudomonas aeruginosa strain F29 isolated from pig fecal matter collected from a mixed animal farm in Ibadan, Oyo State, Nigeria

“…The medium absorption peak at 1635.05 cm -1 was attributed to C=C alkene bending in compounds whose two alkyl groups are oriented on the same side of the alkene. In a study by Hurairah et al (2023) on coagulation -occulation, the seed peel extract from Archidendra jiringa, which was found to be effective as an aid in the elution of lead from man-made residual water, was noted to possibly contain alkene compounds (or aromatic compounds), as indicated by the weak FTIR bands at 3019 cm -1 and 3001 cm -1 . In the spectrum of the bio occulant from Pseudomonas aeruginosa strain F29, the absorption at 1635.05 cm -1 , also indicated the presence of carbonyl (C=O) groups-typically within the range of 1900 to 1600 cm -1 (Smith, 2017 ) -which revealed the presence of carbohydrate sugars in the bio occulant (Roberts and Caserio, 1977).…”