Sustainable Practice in Pavement Engineering through Value-Added Collective Recycling of Waste Plastic and Waste Tyre Rubber

Value-Added Application of Waste Rubber and Waste Plastic in Asphalt Binder as a Multifunctional Additive

Materials ◽

10.3390/ma12081280 ◽

2019 ◽

Vol 12 (8) ◽

pp. 1280 ◽

Cited By ~ 6

Author(s):

Tianqing Ling ◽

Ya Lu ◽

Zeyu Zhang ◽

Chuanqiang Li ◽

Markus Oeser

Keyword(s):

Mechanical Properties ◽

Fatigue Life ◽

Waste Treatment ◽

Treatment Approach ◽

Asphalt Binder ◽

Value Added ◽

Scanning Calorimetry ◽

Multifunctional Additive ◽

Waste Plastic ◽

Waste Rubber

The feasibility and effectivity of recycling waste rubber and waste plastic (WRP) into asphalt binder as a waste treatment approach has been documented. However, directly blending WRP with asphalt binder brings secondary environmental pollution. Recent research has shown that the addition of WRP into asphalt binder may potentially improve the workability of asphalt binder without significantly compromising its mechanical properties. This study evaluates the feasibility of using the additives derived from WRP as a multifunctional additive which improves both the workability and mechanical properties of asphalt binder. For this purpose, WRP-derived additives were prepared in laboratory. Then, three empirical characteristics—viscosity, rutting factor, fatigue life were analyzed. Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) were employed to evaluate the effect of WRP-derived additive on the workability and chemical and mechanical properties of base binder. The dispersity of WRP-derived additive inside asphalt binder was also characterized using fluorescence microscope (FM). Results from this study showed that adding WRP-derived additive increases the workability of base binder. The WRP-derived additive appears positive on the high- and low- temperature performance as well as the fatigue life of base binder. The distribution of the WRP-derived additive inside base binder was uniform. In addition, the modification mechanism of WRP-derived additive was also proposed in this paper.

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Electrocatalytic reforming of waste plastics to high value-added chemicals and hydrogen fuel

Chemical Communications ◽

10.1039/d1cc05032j ◽

2021 ◽

Author(s):

Rui Shi ◽

Ke-Sheng Liu ◽

Fulai Liu ◽

Xiao Yang ◽

Chun-Chao Hou ◽

...

Keyword(s):

Value Added ◽

Waste Plastics ◽

Hydrogen Fuel ◽

Waste Plastic

The upcyclling of waste plastic offers an attractive way to protect the environment and turn waste into value-added chemicals and H2 fuel. Herein, we report a novel electroreforming strategy to...

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Recovery of value-added products from the catalytic pyrolysis of waste tyre

Energy Conversion and Management ◽

10.1016/j.enconman.2008.12.017 ◽

2009 ◽

Vol 50 (4) ◽

pp. 991-994 ◽

Cited By ~ 33

Author(s):

J. Shah ◽

M.R. Jan ◽

F. Mabood

Keyword(s):

Catalytic Pyrolysis ◽

Value Added ◽

Waste Tyre ◽

Value Added Products

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Distributed recycling of waste polymer into RepRap feedstock

Rapid Prototyping Journal ◽

10.1108/13552541311302978 ◽

2013 ◽

Vol 19 (2) ◽

pp. 118-125 ◽

Cited By ~ 121

Author(s):

Christian Baechler ◽

Matthew DeVuono ◽

Joshua M. Pearce

Keyword(s):

Energy Use ◽

Plastic Material ◽

Average Rate ◽

Operating Cost ◽

Value Added ◽

Embodied Energy ◽

Waste Plastic ◽

Content Type ◽

Average Mass ◽

Testing Procedures

PurposeA low‐cost, open source, self‐replicating rapid prototyper (RepRap) has been developed, which greatly expands the potential user base of rapid prototypers. The operating cost of the RepRap can be further reduced using waste polymers as feedstock. Centralized recycling of polymers is often uneconomic and energy intensive due to transportation embodied energy. The purpose of this paper is to provide a proof of concept for high‐value recycling of waste polymers at distributed creation sites.Design/methodology/approachPrevious designs of waste plastic extruders (also known as RecycleBots) were evaluated using a weighted evaluation matrix. An updated design was completed and the description and analysis of the design is presented including component summary, testing procedures, a basic life cycle analysis and extrusion results. The filament was tested for consistency of density and diameter while quantifying electricity consumption.FindingsFilament was successfully extruded at an average rate of 90 mm/min and used to print parts. The filament averaged 2.805 mm diameter with 87 per cent of samples between 2.540 mm and 3.081 mm. The average mass was 0.564 g/100 mm length. Energy use was 0.06 kWh/m.Practical implicationsThe success of the RecycleBot further reduces RepRap operating costs, which enables distributed in‐home, value added, plastic recycling. This has implications for municipal waste management programs, as in‐home recycling could reduce cost and greenhouse gas emissions associated with waste collection and transportation, as well as the environmental impact of manufacturing custom plastic parts.Originality/valueThis paper reports on the first technical evaluation of a feedstock filament for the RepRap from waste plastic material made in a distributed recycling device.

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Sustainable 2,5-furandicarboxylic synthesis by a direct 5-hydroxymethylfurfural fuel cell based on a bifunctional PtNiSx catalyst

Chemical Communications ◽

10.1039/d0cc06087a ◽

2020 ◽

Vol 56 (88) ◽

pp. 13611-13614

Author(s):

Jialu Wang ◽

Xian Zhang ◽

Guozhong Wang ◽

Yunxia Zhang ◽

Haimin Zhang

Keyword(s):

Fuel Cell ◽

Electric Energy ◽

Value Added ◽

Chemical Energy ◽

New Type

A new type of direct 5-hydroxymethylfurfural (HMF) oxidation fuel cell based on a bifunctional PtNiSx/CB catalyst not only transformed chemical energy into electric energy but also converted HMF into value-added 2,5-furandicarboxylic (FDCA).

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