Influences of operating parameters on liquefaction performances of Tetra Pak in sub-/supercritical water

Wang, Yuzhen; Zhu, Yanan; Liu, Zhuan; Su, Ji; Fang, Changqing; Xu, Donghai; Song, Wenhan; Wang, Shuzhong

doi:10.1016/j.jenvman.2019.02.114

Cited by 33 publications

(14 citation statements)

References 38 publications

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“…Wang et al [62] evaluated HTL of aseptic cartons using SCW (sub/supercritical water: T c = 374 • C and P c = 22.1 MPa) in micro-batch reactors. The influence of temperature (300 to 420 • C), pressure (16 to 24 MPa), residence time (5 to 60 min) and feed concentration (5 to 40 wt%) on bio-oil yield, HHV (high heating value), and functional groups in bio-oil were investigated.…”

Section: Pyrolysismentioning

confidence: 99%

Recycling of Aseptic Beverage Cartons: A Review

Robertson

2021

Recycling

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Aseptic beverage cartons are multilayer polymer-coated paperboards with a layer of aluminum foil. Due to their multilayer structure it is commonly assumed that they cannot be recycled. This is not the case and this review details the multifarious processes that are used to recycle aseptic beverage cartons. Hydrapulping to recover the paper fibers that constitute 75% of the carton is the most widespread process, followed by the manufacture of construction materials such as boards and tiles which utilize the complete carton. A range of mechanical, chemical and thermal processes are used to separate the PolyAl (polyethylene and aluminum) residual that remains after the paper fibers have been recovered. The simplest process involves agglutination followed by extrusion to obtain pellets that can then be used in industrial and consumer products or combined with other materials such as lignocellulosic wastes. Chemical approaches involve the solubilization of polyethylene and the removal of aluminum. Various thermal processes have also been investigated and a novel microwave-induced pyrolysis process appears the most commercially viable. It is concluded that the focus in future years is likely to be on recycling cartons into construction materials where there is a theoretical yield of 100% compared with 75% for hydrapulping.

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Section: Pyrolysismentioning

confidence: 99%

Recycling of Aseptic Beverage Cartons: A Review

Robertson

2021

Recycling

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“…Arun et al ( 2021 ), who investigated the HTL of Prosopis juliflora biomass, found that the optimum biocrude oil yield was 22.3% w/w at 300 °C, 60 min, and a 1:20 biomass to solvent ratio. Wang et al ( 2019 ) carried out HTL of waste Tetra Pak in sub- and supercritical water in a micro-batch reactor (100 mm long and 7.5 mm in diameter). They found that the maximum yield of biocrude oil was about 36% w/w at 360 °C, 22 MPa, 30 min, with a feed concentration of 20% w/w , and their biocrude oil mainly contained ketones, phenolics, esters, and alcohols.…”

Section: Introductionmentioning

confidence: 99%

Conversion of tobacco processing waste to biocrude oil via hydrothermal liquefaction in a multiple batch reactor

Saengsuriwong

Onsree

Phromphithak

et al. 2021

Clean Techn Environ Policy

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Graphic abstract Fossil fuels are the primary energy source of almost all societies and economies, but it is finite and scarce. The use of non-renewable fossil fuels threatens earth’s environment. At the same time, waste from agricultural and industrial activities is increasing. Most of this waste is discarded or poorly managed, causing many other environmental issues. Converting waste to energy is a promising route to address these challenges. We investigated the hydrothermal liquefaction (HTL) of high moisture content, tobacco-processing waste in a multiple batch thermal reactor to produce biocrude oil. The effects of operating conditions were studied and optimized for maximum liquid biocrude oil yield. HTL operating conditions considered were temperatures from 280 to 340 °C and residence times from 15 to 45 min for a fixed ratio of biomass to deionized water of 1:3. The reaction temperature was found to affect the yields and distribution of products significantly. The maximum yield of the liquid biocrude oil obtained was more than 52% w/w at 310 °C and 15 min. Under these conditions, almost 90% of the energy was recovered in biocrude oil and solid products. The liquid fraction was mainly composed of phenols, ketones, and nitrogenous compounds. This study provides a potential framework for eco-technologies for biomass waste-to-energy conversion with respect to converting tobacco processing residues to liquid biofuels and biochemicals.

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“…Results show that the deoxidization rate of corn stalk and rice stalk could reach 50 %. In our previous study we investigated the operating conditions for the liquefaction of Tetra Pak waste and found that the maximum bio-oil yield of 35.55 wt % can be reached at 360°C, 22 MPa, and 30 min [23].…”

Section: Introductionmentioning

confidence: 99%

Interactions of the Main Components in Paper‐Plastic‐Aluminum Complex Packaging Wastes during the Hydrothermal Liquefaction Process

Wang

Zhu

et al. 2021

Chem Eng & Technol

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Hydrothermal liquefaction was applied to treat paper-plastic-aluminum (Al-PE-Pa) complex packaging waste for bio-oil production. The interactive effects between the main components of paper fiber, low-density polyethylene (LDPE), and aluminum foil in such complex material were studied. The co-liquefaction of paper fiber and LDPE had a significant synergistic effect. The addition of hydrogen-rich LDPE effectively promoted the removal of oxygen-containing groups. Aluminum foil had only a slight impact on the liquefaction of paper fiber, but it can significantly decrease the oxygen content of the bio-oil, increase the high heating value of the bio-oil, and significantly reduce the ester and phenol contents in the biooil. The co-liquefaction of paper fiber/LPDE/aluminum foil exhibited superimposed effects of paper-plastic synergy and in-situ hydrogenation of Al-H 2 O reaction. A new pathway for the energy utilization of Al-PE-Pa complex packaging waste is provided.

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Influences of operating parameters on liquefaction performances of Tetra Pak in sub-/supercritical water

Cited by 33 publications

References 38 publications

Recycling of Aseptic Beverage Cartons: A Review

Recycling of Aseptic Beverage Cartons: A Review

Conversion of tobacco processing waste to biocrude oil via hydrothermal liquefaction in a multiple batch reactor

Interactions of the Main Components in Paper‐Plastic‐Aluminum Complex Packaging Wastes during the Hydrothermal Liquefaction Process

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