Nanotechnology in Industrial Wastewater Treatment

Roy, Arup Kumer

doi:10.2166/9781780406886

Cited by 19 publications

(12 citation statements)

References 362 publications

(415 reference statements)

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“…Generally, R L values indicate the type of isotherm to be irreversible (R L = 0), linear (R L = 1), favorable (0 < R L < 1), or unfavorable (R L > 1) [43]. In the case of adsorption of copper ions on chitosan electrospun nanofibres, R L values varied between 0 and 1 which confirm the favorability of studied adsorption.…”

Section: Equilibrium Studymentioning

confidence: 81%

Copper (II) ions adsorption from aqueous solutions using electrospun chitosan/peo nanofibres: Effects of process variables and process optimization

Lakhdhar

Mangin

Chabot

2015

Journal of Water Process Engineering

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Section: Equilibrium Studymentioning

confidence: 81%

Copper (II) ions adsorption from aqueous solutions using electrospun chitosan/peo nanofibres: Effects of process variables and process optimization

Lakhdhar

Mangin

Chabot

2015

Journal of Water Process Engineering

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“…The best correlation of the experimental data with the pseudo‐second‐order kinetic model implies that chemisorption process probably involves in the IB adsorption process . The pseudo‐second‐order kinetics equation is based on the number of unoccupied sites on the adsorbent and assumes that chemisorption is the rate limiting step in the adsorption process .…”

Section: Resultsmentioning

confidence: 99%

Synthesis of immobilized poly(vinyl alcohol)/cyclodextrin eco‐adsorbent and its application for the removal of ibuprofen from pharmaceutical sewage

Shang

Chiu

Jiang

2017

J of Applied Polymer Sci

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In this project, immobilized poly(vinyl alcohol)/cyclodextrin eco-adsorbent was synthesized and its application for the removal of ibuprofen from pharmaceutical sewage was investigated. Our eco-adsorbent was prepared via solution blending of (2hydroxypropyl)-b-cyclodextrin (HPBCD) and poly(vinyl alcohol) (PVA), followed by glutaraldehyde treatment. The obtained ecoadsorbent is in the form of transparent film and is very easy to handle. Its FTIR and thermal analysis results show that it is well crosslinked, preventing it from dissolving in sewage. Its adsorption rate is well described by the pseudo-second-order kinetic model. Its maximum ibuprofen uptake is 2.56 mg/g and is higher than those of mesoporous silica, volcanic soil, and zeolite. More than 90% of adsorbed IB molecules are desorbed after soaking the consumed adsorbent in 5% ethanol-water solution for an hour. This implies that our eco-adsorbent can be rapidly regenerated via simple soaking procedure, significantly reducing its operational cost during practical application. As a result, it would be a potential adsorbent for the treatment of pharmaceutical sewage.

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“…The volume of the sludge produced for this study was measured using Imhoff cones through volumetric method [8]. After the jar test experiment, the treated water with the settled flocs was transferred to a 1 L Imhoff cone.…”

Section: Sludge Volume and Sludge Volume Index (Svi) Measurementmentioning

confidence: 99%

Red Lentil (Lens culinaris) Extract as a Novel Natural Coagulant for Turbidity Reduction: An Evaluation, Characterization and Performance Optimization Study

Chua

Malek

Kait

et al. 2019

Water

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Increasing awareness on the detrimental effects of inorganic chemical coagulants and sustainable treatment have paved the way to develop environmentally-benign natural coagulants for water and wastewater treatment. In this research, brown, green, and red lentil (Lens culinaris) extracts have been evaluated as a natural coagulant for the turbidity reduction. The physicochemical characteristics properties of lentil extract were evaluated through field emission scanning electron microscopy (FESEM), Fourier-transform infrared spectroscopy (FTIR), zeta potential analysis, and energy-dispersive X-ray (EDX) analysis. Red lentil extract was found to be an anionic polymer with hydroxyl and carboxyl functional groups. The effects of three major operating parameters, pH, the concentration of coagulant, and settling time, were studied and optimized through response surface methodology (RSM) using the Box–Behnken Design (BBD). The red lentil extract as coagulant was outperformed alum in acidic wastewater treatment, which achieved up to 98.87% turbidity removal with an optimum concentration of 26.3 mg/L in 3 min. Besides, the red lentil extract as coagulant reduced 29.42% of material cost, generated 15.6% lower amount of sludge and produced flocs with better settling characteristic (SVI: 7.39) as compared to alum. Based on the experimental observation and characterization study, absorption and bridging mechanisms were proposed for red lentil extract as the coagulant in turbidity reduction.

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Nanotechnology in Industrial Wastewater Treatment

Cited by 19 publications

References 362 publications

Copper (II) ions adsorption from aqueous solutions using electrospun chitosan/peo nanofibres: Effects of process variables and process optimization

Copper (II) ions adsorption from aqueous solutions using electrospun chitosan/peo nanofibres: Effects of process variables and process optimization

Synthesis of immobilized poly(vinyl alcohol)/cyclodextrin eco‐adsorbent and its application for the removal of ibuprofen from pharmaceutical sewage

Red Lentil (Lens culinaris) Extract as a Novel Natural Coagulant for Turbidity Reduction: An Evaluation, Characterization and Performance Optimization Study

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