Novel sustainable and recyclable nanobiosorbent of cross-lined zeolite with nanobiochar and cellulose for the effecious alleviation of lead (II) from wastewater.

Owing to the bioaccumulation and non-biodegradation in the water environments, lead pollutant was documented to strongly impose severe health problems. Therefore, effecious removal of Pb(II) pollutant from wastewater has been recently listed out as a subject with major concern. To address this issue, a novel Zeol@Ox@CWNB@Ox@Cel nanobiosorbent was assembled via oxalic acid (Ox) crosslinking of zeolite (Zeol) with cabbage waste nanobiochar (CWNB) and cellulose (Cel). This was extensively characterized by diverse instrumentations to affirm the incorporated functional groups via FTIR (CH, OH, C-O-C, CO, SiO and AlO), surface morphology via SEM providing particle size range (25 to 65 nm) and major percentage elemental compositions via EDX. The incorporated capabilities of Zeol@Ox@CWNB@Ox@Cel to uptake and capture Pb(II) ions from aquatic environments was optimized and the concluded conditions for maximum removal of Pb(II) pollutant by Zeol@Ox@CWNB@Ox@Cel were established at pH 6.0, 60.0 min, 40.0 mg and 25.0 °C temperature providing 94.3% by using 10.0 mg/L Pb(II) concentration. Evaluation of the diverse kinetic models denoted to excellent ability of linear pseudo first order model to match with the removal performance of Pb(II). Moreover, Pb(II) uptake was best fitted to Langmuir expression, while the computed thermodynamics parameters accounted for endothermic and spontaneous uptake. Successful regeneration with excellent recovery of Pb(II) for five consecutive processes achieved up to 92.9% stability. The recovered Pb(II) values from polluted water environments by Zeol@Ox@CWNB@Ox@Cel confirmed good achievement (82.9-88.5%). Finally, Zeol@Ox@CWNB@Ox@Cel displayed a promising performance, as an efficient, low-cost, regenerable, sustainable and superior material in Pb(II) detoxification from aquatic systems.