Recovery of nanosized silica and lignin from sugarcane bagasse waste and their engineering in fabrication of composite membrane for water purification

Abstract Sugarcane bagasse waste biomass (SBWB) efficacy for the adsorption of Zr(IV) was investigated in batch and column modes. The process variables i.e. pH 1–4 (A), adsorbent dosage 0.0–0.3 g (B), and Zr(IV) ions initial concentration 25–200 mg/L (C) were studied. The experiments were run under central composite design (CCD) and data was analysed by response surface methodology (RSM) methodology. The factor A, B, C, AB interaction and square factor A2, C2 affected the Zr(IV) ions adsorption onto SBWB. The quadratic model fitted well to the adsorption data with high R2 values. The effect of bed height, flow rate and Zr(IV) ions initial concentration was also studied for column mode adsorption and efficiency was evaluated by breakthrough curves as well as Bed Depth Service and Thomas models. Bed height and Zr(IV) ions initial concentration enhanced the adsorption of capacity of Zr(IV) ions, whereas flow rate reduced the column efficiency.

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Fabrication of a novel and green thin-film composite membrane containing nanovoids for water purification

Journal of Membrane Science ◽

10.1016/j.memsci.2018.10.057 ◽

2019 ◽

Vol 570-571 ◽

pp. 314-321 ◽

Cited By ~ 19

Author(s):

Zhe Yang ◽

Xiaoyu Huang ◽

Xiao-hua Ma ◽

Zhi-wen Zhou ◽

Hao Guo ◽

...

Keyword(s):

Thin Film ◽

Composite Membrane ◽

Water Purification ◽

Film Composite ◽

Thin Film Composite Membrane ◽

Thin Film Composite

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Microporous activated carbon developed from KOH activated biomass waste: surface mechanistic study of methylene blue dye adsorption

Water Science & Technology ◽

10.2166/wst.2021.355 ◽

2021 ◽

Author(s):

Ali H. Jawad ◽

Ahmed Saud Abdulhameed ◽

Noor Nazihah Bahrudin ◽

Nurul Nadiah Mohd Firdaus Hum ◽

S. N. Surip ◽

...

Keyword(s):

Methylene Blue ◽

Activated Carbon ◽

Surface Area ◽

Sugarcane Bagasse ◽

High Surface ◽

High Surface Area ◽

Dye Adsorption ◽

Type I ◽

Order Kinetic ◽

Bagasse Waste

Abstract In this work, sugarcane bagasse waste (SBW) was used as a lignocellulosic precursor to develop a high surface area activated carbon (AC) by thermal treatment of the SBW impregnated with KOH. This sugarcane bagasse waste activated carbon (SBWAC) was characterized by means of crystallinity, porosity, surface morphology and functional groups availability. The SBWAC exhibited Type I isotherm which corresponds to microporosity with high specific surface area of 709.3 m2/g and 6.6 nm of mean pore diameter. Further application of SBWAC as an adsorbent for methylene blue (MB) dye removal demonstrated that the adsorption process closely followed the pseudo-second order kinetic and Freundlich isotherm models. On the other hand, thermodynamic study revealed the endothermic nature and spontaneity of MB dye adsorption on SBWAC with high acquired adsorption capacity (136.5 mg/g). The MB dye adsorption onto SBWAC possibly involved electrostatic interaction, H-bonding and π-π interaction. This work demonstrates SBW as a potential lignocellulosic precursor to produce high surface area AC that can potentially remove more cationic dyes from the aqueous environment.

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