Converting waste polystyrene foam into new value‐added materials: A large‐capacity scavenger to remove cationic dyes and heavy metals

2021 ◽  
pp. 51868
Author(s):  
Hao Ye ◽  
Zhengfeng Xie ◽  
Wei Li ◽  
Yanghao Pu ◽  
Minyao Liu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Value Added ◽  
Cationic Dyes ◽  
Polystyrene Foam ◽  
Large Capacity ◽  
Waste Polystyrene

Hydroponics reducing effluent's heavy metals discharge

2009 ◽  
Vol 59 (1) ◽  
pp. 175-183 ◽  
Author(s):  
Abdellah Rababah ◽  
Ahmad Al-Shuha
Keyword(s):  
Heavy Metals ◽  
Removal Efficiency ◽  
Value Added ◽  
Treated Wastewater ◽  
Hydroponic System ◽  
Heavy Metals Removal ◽  
Treated Effluent ◽  
Metals Removal ◽  
Nutrient Film Technique ◽  
Removal Efficiencies

This paper investigates the capacity of Nutrient Film Technique (NFT) to control effluent's heavy metals discharge. A commercial hydroponic system was adapted to irrigate lettuces with primary treated wastewater for studying the potential heavy metals removal. A second commercial hydroponic system was used to irrigate the same type of lettuces with nutrient solution and this system was used as a control. Results showed that lettuces grew well when irrigated with primary treated effluent in the commercial hydroponic system. The NFT-plant system heavy metals removal efficiency varied amongst the different elements, The system's removal efficiency for Cr was more than 92%, Ni more than 85%, in addition to more than 60% reduction of B, Pb, and Zn. Nonetheless, the NFT-plants system removal efficiencies for As, Cd and Cu were lower than 30%. Results show that lettuces accumulated heavy metals in leaves at concentrations higher than the maximum acceptable European and Australian levels. Therefore, non-edible plants such as flowers or pyrethrum are recommended as value added crops for the proposed NFT.

A Research on Performance of Waste Polystyrene Insulation Block

2010 ◽  
Vol 168-170 ◽  
pp. 1055-1060
Author(s):  
Peng Guo ◽  
Min Feng
Keyword(s):  
Construction Material ◽  
Packing Material ◽  
Polystyrene Foam ◽  
Heat Resistant ◽  
Waste Polystyrene ◽  
Aerated Concrete ◽  
Recycled Waste ◽  
Insulation Block

Recycled waste polystyrene foam can be used as heat-resistant construction material, which helps reduce white pollution, benefits the renewability of resources, and brings a good economic and environmental return. In this paper, non-autoclave aerated concrete is made, which uses foam of polystyrene as its packing material，it also gives a research on performance of polystyrene-aerated concrete materia composition.

A Research on Performance of Polystyrene-Aerated Concrete Wall Materials

2010 ◽  
Vol 150-151 ◽  
pp. 556-560
Author(s):  
Peng Guo ◽  
Rui Yan Wang ◽  
Min Feng ◽  
Xue Juan Cao
Keyword(s):  
Construction Material ◽  
Sound Insulation ◽  
Filling Material ◽  
Polystyrene Foam ◽  
Concrete Wall ◽  
Heat Resistant ◽  
Waste Polystyrene ◽  
Aerated Concrete ◽  
Wall Materials ◽  
Recycled Waste

Recycled waste polystyrene foam can be used as heat-resistant construction material, which helps reduce white pollution, benefit the renewability of resources, and brings a good economic and environmental return. Here in this paper, polystyrene foamy particle is used as filling material for the making of non-autoclave aerated concrete, which has good performance with heat reservation and sound insulation.

Improvement of bio-crude oil properties via co-pyrolysis of pine sawdust and waste polystyrene foam

2019 ◽  
Vol 237 ◽  
pp. 24-29 ◽  
Author(s):  
Quynh Van Nguyen ◽  
Yeon Seok Choi ◽  
Sang Kyu Choi ◽  
Yeon Woo Jeong ◽  
Yong Su Kwon
Keyword(s):  
Crude Oil ◽  
Polystyrene Foam ◽  
Pine Sawdust ◽  
Waste Polystyrene

scholarly journals Pelletized ponderosa pine bark for adsorption of toxic heavy metals from water

BioResources ◽  
2007 ◽  
Vol 2 (1) ◽  
pp. 66-81
Author(s):  
Miyoung Oh ◽  
Mandla A. Tshabalala
Keyword(s):  
Heavy Metals ◽  
Metal Ions ◽  
Adsorption Capacity ◽  
Ponderosa Pine ◽  
Metal Ion ◽  
Value Added ◽  
Freundlich Isotherm ◽  
Toxic Heavy Metals ◽  
Adsorption Affinity ◽  
Column Adsorption

ark flour from ponderosa pine (Pinus ponderosa) was consolidated into pellets using citric acid as cross-linking agent. The pellets were evaluated for removal of toxic heavy metals from synthetic aqueous solutions. When soaked in water, pellets did not leach tannins, and they showed high adsorption capacity for Cu(II), Zn(II), Cd(II), and Ni(II) under both equilibrium and dynamic adsorption conditions. The experimental data for Cd(II) and Zn(II) showed a better fit to the Langmuir than to the Freundlich isotherm. The Cu(II) data best fit the Freundlich isotherm, and the Ni(II) data fitted both Freundlich and Langmuir isotherms equally. According to the Freundlich constant KF, adsorption capacity of pelletized bark for the metal ions in aqueous solution, pH 5.1 ± 0.2, followed the order Cd(II) > Cu(II) > Zn(II) >> Ni(II); according to the Langmuir constant b, adsorption affinity followed the order Cd(II) >> Cu(II) ≈ Zn(II) >> Ni(II). Although data from dynamic column adsorption experiments did not show a good fit to the Thomas kinetic adsorption model, estimates of sorption affinity series of the metal ions on pelletized bark derived from this model were not consistent with the series derived from the Langmuir or Freundlich isotherms and followed the order Cu(II) > Zn(II) ≈ Cd(II) > Ni(II). According to the Thomas kinetic model, the theoretical maximum amounts of metal that can be sorbed on the pelletized bark in a column at influent concentration of ≈10 mg/L and flow rate = 5 mL/min were estimated to be 57, 53, 50, and 27 mg/g for copper, zinc, cadmium, and nickel, respectively. This study demonstrated the potential for converting low-cost bark residues to value-added sorbents using starting materials and chemicals derived from renewable resources. These sorbents can be applied in the removal of toxic heavy metals from waste streams with heavy metal ion concentrations of up to 100 mg/L in the case of Cu(II).

scholarly journals Process Waters from Hydrothermal Carbonization of Sludge: Characteristics and Possible Valorization Pathways

2020 ◽  
Vol 17 (18) ◽  
pp. 6618
Author(s):  
Michela Langone ◽  
Daniele Basso
Keyword(s):  
Heavy Metals ◽  
State Of The Art ◽  
Value Added ◽  
Hydrothermal Carbonization ◽  
Process Water ◽  
Technical Feasibility ◽  
Toxic Compounds ◽  
Sludge Characteristics ◽  
Innovative Process ◽  
Feasibility Constraints

Hydrothermal carbonization (HTC) is an innovative process capable of converting wet biodegradable residues into value-added materials, such as hydrochar. HTC has been studied for decades, however, a lack of detailed information on the production and composition of the process water has been highlighted by several authors. In this paper the state of the art of the knowledge on this by-product is analyzed, with attention to HTC applied to municipal and agro-industrial anaerobic digestion digestate. The chemical and physical characteristics of the process water obtained at different HTC conditions are compared along with pH, color, organic matter, nutrients, heavy metals and toxic compounds. The possibility of recovering nutrients and other valorization pathways is analyzed and technical feasibility constraints are reported. Finally, the paper describes the main companies which are investing actively in proposing HTC technology towards improving an effective process water valorization.

scholarly journals Advances in natural rubber seed shell utilization in polymer technology

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Lawrence O. Ekebafe ◽  
Linda C. Igbonazobi ◽  
Esther A. Anakhu
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Prospective Study ◽  
Carbon Materials ◽  
Value Added ◽  
Polymer Gels ◽  
Industrial Applications ◽  
Rubber Seed ◽  
Water Treatments ◽  
Value Added Products

The valorization of rubber seed shell into useful materials for industrial applications in polymer technology is of great interest. The usefulness of this material is borne out of the ease of processing; it’s readily available at low or no cost, and less abrasive to equipment. Literature and research reports have shown that rubber seed shell has gained applications in the adhesive industry as reinforcing additive, in electrode manufacturing, as filler in polymer composites, as sorbent in the uptake of heavy metals during waste water treatments, as starting material in the production carbon materials for value added products for the industry. However, there are still outstanding prospects in the utilization of this material in various areas of polymer technology such as a lignocellulosic source for the production of biodegradable foams, polymer gels, second generation bio-plastics and biofuels, and as surfactants. This review examines the results of a retrospective and prospective study in polymer technology of the latent properties inherent in rubber seed shell with particular emphasis on its utilization in polymer technology.

Recycling of Ceramic and Polymeric Wastes in the Production of Surfacing Composite Materials

2019 ◽  
Vol 23 (7) ◽  
pp. 36-41 ◽  
Author(s):  
A.S. Torlova ◽  
I.A. Vitkalova ◽  
E.S. Pikalov ◽  
O.G. Selivanov
Keyword(s):  
Thermal Decomposition ◽  
Composite Material ◽  
Energy Intensity ◽  
Polymer Composite Material ◽  
Polymer Binder ◽  
Polystyrene Foam ◽  
Waste Products ◽  
Waste Polystyrene ◽  
Crushed Brick ◽  
Polymeric Wastes

Presents the results of research on the development of a method for joint utilization of polystyrene foam and brick waste with obtaining a polymer composite material for the production of wall cladding products. This method consists in grinding the waste polystyrene foam with their subsequent dissolution in carbon tetrachloride and cold mixing the resulting solution with a crushed brick. This method reduces the energy intensity of production, eliminates thermal decomposition of the polymer binder during processing and makes it possible to jointly dispose of two types of large-tonnage waste. Products that can be obtained from the developed material, according to the values of frost resistance and water absorption, meet the requirements for products for external facing of walls and sole plates of facades.

Highly efficient and sustainable carboxylated cellulose filters for removal of cationic dyes/heavy metals ions

2020 ◽  
Vol 389 ◽  
pp. 123458 ◽  
Author(s):  
Cong Li ◽  
Hongyang Ma ◽  
Shyam Venkateswaran ◽  
Benjamin S. Hsiao
Keyword(s):  
Heavy Metals ◽  
Cationic Dyes ◽  
Highly Efficient ◽  
Heavy Metals Ions

Waste polystyrene foam-graft-acrylic acid/montmorillonite superabsorbent nanocomposite

2007 ◽  
Vol 104 (4) ◽  
pp. 2341-2349 ◽  
Author(s):  
Ping-Sheng Liu ◽  
Li Li ◽  
Ning-Lin Zhou ◽  
Jun Zhang ◽  
Shao-Hua Wei ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Polystyrene Foam ◽  
Waste Polystyrene
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