Dataset Information

Innovative optimization for enhancing Pb²⁺ biosorption from aqueous solutions using Bacillus subtilis.

ABSTRACT:

Introduction

Toxic heavy metal pollution has been considered a major ecosystem pollution source. Unceasing or rare performance of Pb²⁺ to the surrounding environment causes damage to the kidney, nervous, and liver systems. Microbial remediation has acquired prominence in recent decades due to its high efficiency, environment-friendliness, and cost-effectiveness.

Methods

The lead biosorption by Bacillus subtilis was optimized by two successive paradigms, namely, a definitive screening design (DSD) and an artificial neural network (ANN), to maximize the sorption process.

Results

Five physicochemical variables showed a significant influence (p < 0.05) on the Pb²⁺ biosorption with optimal levels of pH 6.1, temperature 30°C, glucose 1.5%, yeast extract 1.7%, and MgSO₄.7H₂O 0.2, resulting in a 96.12% removal rate. The Pb²⁺ biosorption mechanism using B. subtilis biomass was investigated by performing several analyses before and after Pb²⁺ biosorption. The maximum Pb²⁺ biosorption capacity of B. subtilis was 61.8 mg/g at a 0.3 g biosorbent dose, pH 6.0, temperature 30°C, and contact time 60 min. Langmuir's isotherm and pseudo-second-order model with R² of 0.991 and 0.999 were suitable for the biosorption data, predicting a monolayer adsorption and chemisorption mechanism, respectively.

Discussion

The outcome of the present research seems to be a first attempt to apply intelligence paradigms in the optimization of low-cost Pb²⁺ biosorption using B. subtilis biomass, justifying their promising application for enhancing the removal efficiency of heavy metal ions using biosorbents from contaminated aqueous systems.

SUBMITTER: El-Sharkawy RM

PROVIDER: S-EPMC11338800 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature

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Publications

Innovative optimization for enhancing Pb<sup>2+</sup> biosorption from aqueous solutions using <i>Bacillus subtilis</i>.

El-Sharkawy Reyad M RM Khairy Mohamed M Abbas Mohamed H H MHH Zaki Magdi E A MEA El-Hadary Abdalla E AE

Frontiers in microbiology 20240808

<h4>Introduction</h4>Toxic heavy metal pollution has been considered a major ecosystem pollution source. Unceasing or rare performance of Pb<sup>2+</sup> to the surrounding environment causes damage to the kidney, nervous, and liver systems. Microbial remediation has acquired prominence in recent decades due to its high efficiency, environment-friendliness, and cost-effectiveness.<h4>Methods</h4>The lead biosorption by <i>Bacillus subtilis</i> was optimized by two successive paradigms, namely, a ...[more]

PMID: 39176280

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Project description:Various microbial biomasses have been employed as biosorbents. Bacterial biomass has added advantages because of easy in production at a low cost. The study investigated the biosorption of iron from aqueous solutions by Bacillus subtilis. An optimum biosorption capacity of 7.25 mg of the metal per gram of the biosorbent was obtained by the Inductive Coupled Plasma Optical Emission Spectroscopy (ICP-OES) under the experimental conditions of initial metal concentration of 100 mg/l, pH 4.5, and biomass dose of 1 g/l at 30°C for 24 hrs. The data showed the best fit with the Freundlich isotherm model while following pseudo-first-order kinetics. Scanning Electron Microscope (SEM) and Energy Dispersive X-ray (EDX) analysis confirmed iron biosorption as precipitates on the bacterial surface, and as a peak in the EDX spectrum. The functional hydroxyl, carboxyl, and amino groups that are involved in biosorption were revealed by the Fourier Transform Infrared spectroscopy (FTIR). The amorphous nature of the biosorbent for biosorption was indicated by the X-ray Diffraction (XRD) analysis. The biomass of B. subtilis exhibited a point zero charge (pHpzc) at 2.0.Various microbial biomasses have been employed as biosorbents. Bacterial biomass has added advantages because of easy in production at a low cost. The study investigated the biosorption of iron from aqueous solutions by Bacillus subtilis. An optimum biosorption capacity of 7.25 mg of the metal per gram of the biosorbent was obtained by the Inductive Coupled Plasma Optical Emission Spectroscopy (ICP-OES) under the experimental conditions of initial metal concentration of 100 mg/l, pH 4.5, and biomass dose of 1 g/l at 30°C for 24 hrs. The data showed the best fit with the Freundlich isotherm model while following pseudo-first-order kinetics. Scanning Electron Microscope (SEM) and Energy Dispersive X-ray (EDX) analysis confirmed iron biosorption as precipitates on the bacterial surface, and as a peak in the EDX spectrum. The functional hydroxyl, carboxyl, and amino groups that are involved in biosorption were revealed by the Fourier Transform Infrared spectroscopy (FTIR). The amorphous nature of the biosorbent for biosorption was indicated by the X-ray Diffraction (XRD) analysis. The biomass of B. subtilis exhibited a point zero charge (pHpzc) at 2.0.

Dataset Information

Innovative optimization for enhancing Pb²⁺ biosorption from aqueous solutions using Bacillus subtilis.

Introduction

Methods

Results

Discussion

Publications

Innovative optimization for enhancing Pb<sup>2+</sup> biosorption from aqueous solutions using <i>Bacillus subtilis</i>.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

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Dataset Information

Innovative optimization for enhancing Pb2+ biosorption from aqueous solutions using Bacillus subtilis.

Introduction

Methods

Results

Discussion

Publications

Innovative optimization for enhancing Pb<sup>2+</sup> biosorption from aqueous solutions using <i>Bacillus subtilis</i>.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets

Innovative optimization for enhancing Pb²⁺ biosorption from aqueous solutions using Bacillus subtilis.