Recycling of Plastic Waste by Using Pyrolysis Reactor: A Case Study of First Marine Protected Area of Pakistan (Astola Island)

Astola Island is the first marine protected area of Pakistan acknowledged 2017, June 15. It is a rich biodiversity hotspot, Ramsar site inhabiting endangered species like Green turtle, Hawksbill turtle, and Arabian Humpback whale. A saw-scaled Russell’s viper is endemic to Island. Marine ecology of Astola Island is affected by plastic pollution resulting in coral destruction, ocean acidification, global warming, fishing nets blockage, water pollution, and coastal erosion. Zeolite catalyst synthesized from environmentally friendly way by coal fly ash to degrade collected plastic waste from Island into useful products in pyrolysis reactor. The synthesized catalyst functionalized further with three type of organosilane(1) Octyltriethoxysilane(OS),(2)Phenyltriethoxysilane(PS)(3)Vinyltriethoxysilane(VS).Zeolite functionalize with octyltriethoxy silane (ZO) shows the highest performance in plastic pyrolysis, resulting in lower degradation temperature, low residue and more product formation may be due to having long chain hydrocarbon and acidic sites. Plastic recycling is the promising solution to tackle plastic blooming issue. Which is negatively impacting all the compartments of ecosystem especially marine environment.

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Pyro-Oil and Wax Recovery from Reclaimed Plastic Waste in a Continuous Auger Pyrolysis Reactor

Energies ◽

10.3390/en13082040 ◽

2020 ◽

Vol 13 (8) ◽

pp. 2040 ◽

Cited By ~ 1

Author(s):

Sultan Majed Al-Salem ◽

Yang Yang ◽

Jiawei Wang ◽

Gary Anthony Leeke

Keyword(s):

Product Distribution ◽

Plastic Waste ◽

Densification Process ◽

Plastic Pollution ◽

Waste Plastic ◽

Diesel Fuels ◽

Plastic Recycling ◽

Plastic Wastes ◽

Liquid Products ◽

Pyrolysis Reactor

The increasing global waste plastic pollution is urging people to take immediate actions on effective plastic recycling and processing. In this work, we report the results of processing reclaimed plastic wastes from unsanitary landfill site in Kuwait by using a bench scale continuous auger pyrolysis system. The plastic feedstock was characterised. After a simple thermal densification process, the material was fed to the pyrolysis system at 500 °C. The pyro-oil and wax products were collected and characterised. The process mass balance was developed on dry basis, and the yields of pyro-oil, light wax, heavy wax and gases were 5.5, 23.8, 69.4 and 1.3 wt%, respectively. The findings have indicated that the reclamation of plastic waste from landfill was feasible in terms of the product distribution and characteristics. Further liquid analysis confirmed that the liquid products contained fractions that are comparable to petrol and diesel fuels. The wax products are viable and have potential application as coating, covering and lubrication.

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Recycling Marine Plastic into Clothing Apparel via Global Collaborations

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.38724 ◽

2021 ◽

Vol 9 (10) ◽

pp. 1842-1851

Author(s):

Akkshita Swain

Keyword(s):

Supply Chain ◽

United Nations ◽

Food Chain ◽

Plastic Waste ◽

Aquatic Pollution ◽

Fashion Industry ◽

Plastic Pollution ◽

Plastic Recycling ◽

Truck Load ◽

Do So

Abstract: According to the United Nations, aquatic pollution affects at least 800 species worldwide, with plastic responsible for up to 80% of the waste. Every minute, up to 13 million metric tonnes of plastic is expected to end up in the ocean, the equivalent of a trash or garbage truck load. Plastic is a design failure; it was never intended to end up in animals' stomachs or at the bottom of the food chain in humans. The fashion industry is a massive contributor to the plastic waste found in the oceans and so it becomes necessary for corporations to take sustainable steps in the direction of reducing Ocean Plastic Pollution. One of the ways to do so would be by recycling ocean plastic into clothes. Our study focuses on analysing global collaborations and suggesting a series of steps for recycling ocean plastic. Keywords: Marine Plastic, Recycling, Supply Chain, Plastic Pollution, Polymers

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Catalytic Pyrolysis of a Residual Plastic Waste Using Zeolites Produced by Coal Fly Ash

Catalysts ◽

10.3390/catal10101113 ◽

2020 ◽

Vol 10 (10) ◽

pp. 1113

Author(s):

Marco Cocchi ◽

Doina De Angelis ◽

Leone Mazzeo ◽

Piergianni Nardozi ◽

Vincenzo Piemonte ◽

...

Keyword(s):

Fly Ash ◽

Energy Demand ◽

Catalytic Pyrolysis ◽

Low Cost ◽

Coal Fly Ash ◽

Plastic Waste ◽

Scanning Calorimetry ◽

Contact Mode ◽

Degradation Temperature ◽

Pyrolysis Oils

The plastic film residue (PFR) of a plastic waste recycling process was selected as pyrolysis feed. Both thermal and catalytic pyrolysis experiments were performed and coal fly ash (CFA) and X zeolites synthesized from CFA (X/CFA) were used as pyrolysis catalysts. The main goal is to study the effect of low-cost catalysts on yields and quality of pyrolysis oils. NaX/CFA, obtained using the fusion/hydrothermal method, underwent ion exchange followed by calcination in order to produce HX/CFA. Firstly, thermogravimetry and differential scanning calorimetry (TG and DSC, respectively) analyses evaluated the effect of catalysts on the PFR degradation temperature and the process energy demand. Subsequently, pyrolysis was carried out in a bench scale reactor adopting the liquid-phase contact mode. HX/CFA and NaX/CFA reduced the degradation temperature of PFR from 753 to 680 and 744 K, respectively, while the degradation energy from 2.27 to 1.47 and 2.07 MJkg−1, respectively. Pyrolysis runs showed that the highest oil yield (44 wt %) was obtained by HX/CFA, while the main products obtained by thermal pyrolysis were wax and tar. Furthermore, up to 70% of HX/CFA oil was composed by gasoline range hydrocarbons. Finally, the produced gases showed a combustion energy up to 8 times higher than the pyrolysis energy needs.

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Bill Calls for Dramatically Cutting Plastic Pollution

Eos ◽

10.1029/2020eo140084 ◽

2020 ◽

Vol 101 ◽

Author(s):

Randy Showstack

Keyword(s):

United States ◽

The United States ◽

Plastic Waste ◽

Plastic Pollution ◽

Plastic Recycling ◽

Single Use ◽

Set Up

With just 8% of plastic waste in the United States currently being recycled, the bill aims to set up an effective plastic recycling program and limit single-use plastic.

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Shredder machine for plastic recycling: A review paper

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/1217/1/012007 ◽

2022 ◽

Vol 1217 (1) ◽

pp. 012007

Author(s):

J H Wong ◽

M J H Gan ◽

B L Chua ◽

M Gakim ◽

N J Siambun

Keyword(s):

Waste Disposal ◽

Review Paper ◽

Plastic Waste ◽

Waste Materials ◽

Concept Design ◽

Plastic Pollution ◽

Research Gaps ◽

Plastic Recycling ◽

Global Concern ◽

Critical Components

Abstract Plastic pollution has become a global concern due to poor plastic waste disposal management. As an alternative, independent recycling efforts are necessary. A Plastic shredder machine is a preliminary machine used to cut plastic waste into small pieces before turning it into useful products. The concept design of the shredder machine that is currently available is fairly similar. The shaft and blades are the critical components in the shredder machine that determines its performance. The geometry and orientation of the blades that were fitted into the single or double-shafts were found to directly affect the shredding performance. Therefore, this article aims to review the various geometry and orientations of the blades that give direct effect on the shredding performance, as well as identifying the research gaps related to the shredder machine for plastic waste materials

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Marine Biodiversity and Sustainable Development Strategy for Dabijiashan National Special Marine Protected Area

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.448-453.4329 ◽

2013 ◽

Vol 448-453 ◽

pp. 4329-4332

Author(s):

Yu Ning Liu ◽

Li Juan Cao ◽

Zi Chang Shangguan

Keyword(s):

Sustainable Development ◽

Development Strategy ◽

Fisheries Management ◽

Conservation Biology ◽

Protected Area ◽

Marine Protected Area ◽

Structural Diversity ◽

Marine Ecology ◽

Marine Biodiversity ◽

Management And Conservation

Marine protected area fulfills three key functions in modern conservation: conserving marine biodiversity, maintaining productivity, and contributing to economic and social welfare. Marine biodiversity in marine protected area is very important problem for marine ecology, fisheries management, and conservation biology. Evaluation for value of marine biodiversity and biological structural diversity are discussed in the paper. Sustainable development strategies for Dabijiashan national special marine protected area are investigated.

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Assessing the Economic Impacts of Marine Protected Area in Quilitisan, Calatagan, Batangas: An Input to Coastal Resource Management

IAMURE International Journal of Ecology and Conservation ◽

10.7718/ijec.v10i1.773 ◽

2014 ◽

Vol 10 (1) ◽

Author(s):

BERNARDO C. LUNAR ◽

ANGELICA A. MACALALAD

Keyword(s):

Resource Management ◽

Protected Area ◽

Marine Protected Area ◽

Economic Valuation ◽

Secondary Data ◽

Mean Value ◽

Marine Ecology ◽

Coastal Resource Management ◽

Site Development ◽

Coastal Resource

One of the management goals of the Verde Island Passage Marine Corridoris to increase the area and numbers of well managed Marine Protected Areas bythe year 2018. The establishment and maintenance of these MPAs are faced withissues on sustainability. The question on whether they create economic sense isanswered by looking into the generation of benefits that are at least equal tothe costs they incur. Employing the descriptive method of study, it assessed themangrove related ecotourism impacts inside the MPA of Quilitisan, CalataganBatangas. Secondary data came from the management of the Calatagan Mangrove Forest Conservation Park (CMFCP). The study revealed that compared to the estimated number of visitors in the nearby resorts, the park is still behind on thenumber of its visitors. Relying heavily on its revenue from entrance fees, servicesrentals and donations, its operation is not that sustainable as it lacks a fund formaintenance and site development. With the survey and FGDs conducted, itwas deduced that the ecotourism experience being offered by the CMFCP is satisfying to the visitors as reflected on their mean value of their WTP amountingto Php 150.00 which is higher than the current payment scheme. The value iscommensurate with the raise that the management plans to implement.Keywords: Marine Ecology, economic valuation, coastal resource management,willingness to pay, marine protected area, tourism impacts, ecotourism, Batangas,Philippines

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