A novel algal-based sorbent for heavy metal removal

Demey, Hary; Vincent, Thierry; Guibal, Eric

doi:10.1016/j.cej.2017.09.083

Cited by 175 publications

(76 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Alginate/PEI beads: sodium alginate (4% w/w) = 50 g, PEI derivative powder = 2 g, calcium carbonate sol. (10% w/w) = 2 g, water = 46 g. Alginate/Fucus/PEI beads: Fucus vesiculosus alga = 10 g, sodium carbonate = 2 g, water = 288 g, PEI derivative powder = 2 g, sodium alginate = 1 g, calcium carbonate (10 % w/w) = 2 g, water = 35 g 1.09 mmol/g [42] Torrefied biomass CENTORRE oven = i. In this work, high strength PVA hydrogels were successfully reinforced with OPB and MWCNTs by in-situ polymerization in the presence of NMBA as a crosslinking agent and APS as an initiator.…”

Section: Hydrogel Compositementioning

confidence: 99%

Efficient Removal of Pb(II) from Aqueous Solutions by Using Oil Palm Bio-Waste/MWCNTs Reinforced PVA Hydrogel Composites: Kinetic, Isotherm and Thermodynamic Modeling

et al. 2020

View full text Add to dashboard Cite

Polyvinyl alcohol (PVA) hydrogel are still restricted for some applications because their lower mechanical strength and thermal stability. The PVA-based composites are drawing attention for the removal of heavy metals based on their specific functionality in adsorption process. The main objective of this work is to synthesize oil palm bio-waste (OPB)/multiwalled carbon nanotubes (MWCNTs) reinforced PVA hydrogels in the presence of N,N′-methylenebisacrylamide (NMBA) as a crosslinking agent and ammonium persulfate (APS) as an initiator via simple in-situ polymerization technique. The as-prepared reinforced nanocomposites were characterized by FESEM, BET surface area, differential scanning calorimetry (DSC), TGA and FTIR analysis. The possible influence of OPB and MWCNTs on the tensile strength, elongation at break and elastic modulus of the samples were investigated. It was found that reinforced nanocomposites exhibited enhanced mechanical properties as compared to non-reinforced material. The evaluation of reinforced nanocomposites was tested by the removal of Pb(II) aqueous solutions in a batch adsorption system. The pseudo-second-order kinetic model was used to illustrate the adsorption kinetic results and Langmuir isotherm was more suitable to fit the equilibrium results providing maximum adsorption capacities. The evaluation of thermodynamic parameters describes the spontaneous, endothermic and chemisorption adsorption process while activation energy reveals the physical adsorption mechanism. Therefore, the coordination effects among OPB, MWCNTs and PVA polymer hydrogels can produce a promising adsorbent material for wastewater treatment applications.

show abstract

Section: Hydrogel Compositementioning

confidence: 99%

Efficient Removal of Pb(II) from Aqueous Solutions by Using Oil Palm Bio-Waste/MWCNTs Reinforced PVA Hydrogel Composites: Kinetic, Isotherm and Thermodynamic Modeling

et al. 2020

View full text Add to dashboard Cite

show abstract

“…There are many well-known processes regarding the treatments of contaminated wastewaters like membrane filtration, 1-4 chemical precipitation, [5][6][7] electrocoagulation, [8][9][10][11][12] reverse osmosis, [13][14][15] adsorbtion, [16][17][18][19][20][21][22][23][24] ion exchange, [25][26][27] etc., all of them with their inherent advantages and disadvantages. At the same time, most of them are not suitable for developing countries due to huge cost investment in terms of use of chemicals, infrastructure, and operation.…”

Section: Introductionmentioning

confidence: 99%

Heavy metal adsorption ability of a new composite material based on starch strengthened with chemically modified cellulose

Anghel¹,

Niculaua

Spiridon³

2019

Polymers for Advanced Techs

View full text Add to dashboard Cite

Adsorption of heavy metals (Pb, Zn, and Cu) on a new bioadsorbent based on starch reinforced with modified cellulose with toluene‐diisocyanate has been studied using batch‐adsorption technology. The study was carried out in order to find if this bio material, designed for seedling pots manufacture, is able to act like a barrier between soil pollutants and plants. The influence of contact time, pH, adsorbent dose, and salt concentrations was also evaluated. The obtained data were examined using the Langmuir and Freundlich adsorption models. Optimal results were obtained at pH 5.0, temperature of 25°C, contact time of 120 minutes, and an adsorbent dose of 4 mg/mL. Experimental data along with computed Langmuir parameters show that the adsorption process is favorable, and the maximum adsorption capacity of the adsorbent for lead, zinc, and copper was 66.66, 58.82, and 47.61 mg/g, respectively.

show abstract

“…Combining chitosan and activated carbon in nanocomposites was reported to enhance the adsorption capacity as high as 52.63 mg/g (Hackbarth et al 2015). Solid supported materials such as magnetic nanoparticles and bentonite were also reported to enhance the adsorption capacity of chitosan for removal of cadmium (Ahmad et al 2015;Demey et al 2018). Modification of chitosan surface with quaternary ammonium bromide was also reported for removal of heavy metal ions (Zhang et al 2016;Shekhawat et al 2017).…”

Section: Water Treatmentmentioning

confidence: 99%

Seafood waste: a source for preparation of commercially employable chitin/chitosan materials

Yadav

Goswami

Paritosh

et al. 2019

Bioresour. Bioprocess.

389

179

View full text Add to dashboard Cite

Modern seafood processing practices result in amassment of a large volume of waste products, i.e., skin, head, tails, shells, scales, backbones, etc. These waste products may often encompass several high-value products which are still untapped due to the dearth of appropriate management. Moreover, inadequate disposal of waste also has negative implications on both environment and human health. This seafood waste often contains a huge amount of chitin, a polysaccharide that exhibits exceptional inherent characteristics including biocompatibility, biodegradability, antimicrobial, antitumor and antioxidant activities. The present review summarizes the existing methods for recovery of chitin and its derivatives from marine waste. The preparation of chitin nanoparticles was discussed along with blending of chitin and chitosan with other biopolymers. The recent trends of the application of chitin and chitosan nanostructures in various sectors were explored. This review is an attempt to highlight the extraction methods of chitin and chitosan from marine waste resources and its transformation into valuable commercial products as a solution to waste management.

show abstract

A novel algal-based sorbent for heavy metal removal

Cited by 175 publications

References 56 publications

Efficient Removal of Pb(II) from Aqueous Solutions by Using Oil Palm Bio-Waste/MWCNTs Reinforced PVA Hydrogel Composites: Kinetic, Isotherm and Thermodynamic Modeling

Efficient Removal of Pb(II) from Aqueous Solutions by Using Oil Palm Bio-Waste/MWCNTs Reinforced PVA Hydrogel Composites: Kinetic, Isotherm and Thermodynamic Modeling

Heavy metal adsorption ability of a new composite material based on starch strengthened with chemically modified cellulose

Seafood waste: a source for preparation of commercially employable chitin/chitosan materials

Contact Info

Product

Resources

About