Coagulation of Metallic Pollutants from Wastewater Using a Variety of Coagulants Based on Metal Binding Interaction Studies

Sharif, Saba; Zaman, Qamar; Javaid, Sana; Arif, Khalid; Mansha, Muhammad; Ehsan, Nusrat; Nazir, Saba; Rehman, Gul; Iqbal, Munawar; Nazir, Arif

doi:10.1515/zpch-2019-1532

Cited by 23 publications

(1 citation statement)

References 51 publications

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“…Chitosan is available in different forms, which are nonporous due to presence of hydrogen bonding between chitin biopolymer chains. The relatively low surface area of polymeric materials restricts access to internal adsorption sites, reducing metal-ligand adsorption ability and level [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Removal of Cr(III) from Aqueous Solution Using Labeo rohita Chitosan-Based Composite

Bukhari

Hassan

Atta

et al. 2022

Adsorption Science & Technology

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This study focusses on the synthesis of chitosan-cellulose composite membrane derived from Labeo rohita fish scales (FS) for the removal of Cr(III) from aqueous solution, while chromium is a serious threat to groundwater. Waste FS are valorized to chitosan by demineralization, deproteination, and deacetylation successively. Cellulose was extracted from sugarcane bagasse using acidic hydrolysis. Chitosan-based cellulose composite porous membrane was fabricated by evaporating solvent from polymer solution in petri dish. The impact of pH, contact time, and absorbent dosage on the removal of Cr(III) from an aqueous solution was investigated. Atomic absorption spectrophotometer was used to check the Cr(III). Results showed that chitosan comprising 85% degree of deacetylation was achieved by alkali treatment, while yield was 22%. FTIR analysis confirmed the chitosan and chitosan-cellulose-based composite membrane. Morphology studies showed that the cellulose was strongly staggered and due to the chitosan, the surface of cellulose became rougher, which is good to enhance the adsorption capacity. The maximum removal 57% of Cr(III) from aqueous solution was observed at pH 6 at 60 min and 50 mg dosage of adsorbent. The minimum removal (47%) of Cr (III) was found at pH 2. These results confer that Labeo rohita-based chitosan-cellulose composite membrane has great potential for the removal of metals from industrial effluents.

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Section: Introductionmentioning

confidence: 99%

Removal of Cr(III) from Aqueous Solution Using Labeo rohita Chitosan-Based Composite

Bukhari

Hassan

Atta

et al. 2022

Adsorption Science & Technology

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Hydroxyzine removal from the polluted aqueous solution using the hybrid treatment process of electrocoagulation and adsorption; optimization, and modeling

et al. 2022

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The current work investigated the efficacy of the hybrid treatment process of electrocoagulation and adsorption in removing hydroxyzine (HDZ) from polluted aqueous solutions. Response surface methodology (RSM) was used to optimize the operating parameters based on the sub-category of central composite design (CCD). The significance of variables, interactions, and quadratic effects was investigated through analysis of variance (ANOVA). The value of determination coefficient (R2), Adjusted R2 (Adj.R2) and predicted R2 (Pred.R2) were 0.9855, 0.9791, and 0.9743, respectively; also, p-value of P < 0.0001, and F-value of 65.91 were obtained. The obtained results revealed that the removal efficiency of 99.3% and electrical energy consumption of 0.438 kWh m−3 were achieved at the optimum treatment condition of initial HDZ concentration of 25.0 mg L−1, pH solution of 8.0, the current density of 12.0 mA cm−2, reaction time of 15.0 min, and chitosan dosage of 0.03 g L−1. According to the Pareto analysis, the initial HDZ concentration, solution pH, current density, and reaction time’s contribution to the HDZ removal were 22.61%, 38.99%, 19.36%, and 9.43, respectively. Furthermore, the contributions of solution pH and reaction time with the quadratic effects were 3.43% and 6.19%, respectively. Thus, the pH solution revealed the highest contribution to the removal process. Overall, HDZ removal by the hybrid treatment process of EC and AD revealed a good efficiency; also, it can be potentially presented as a promising process for treating polluted water.

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Environmental remediation and generation of green electricity using constructed wetlands coupled with microbial fuel cell model system

Nazir

Jubeen

Sultan

et al. 2023

Arabian Journal of Chemistry

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Coagulation of Metallic Pollutants from Wastewater Using a Variety of Coagulants Based on Metal Binding Interaction Studies

Cited by 23 publications

References 51 publications

Removal of Cr(III) from Aqueous Solution Using Labeo rohita Chitosan-Based Composite

Removal of Cr(III) from Aqueous Solution Using Labeo rohita Chitosan-Based Composite

Hydroxyzine removal from the polluted aqueous solution using the hybrid treatment process of electrocoagulation and adsorption; optimization, and modeling

Environmental remediation and generation of green electricity using constructed wetlands coupled with microbial fuel cell model system

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