Aluminum Beverage Research Articles

Lactic and Acetic Acids in Sour Beers Promote Corrosion During Aluminum Beverage Can Storage

Newer sour beers are often packaged in aluminum cans, but the compatibility of sour beer and its major acids (lactic, acetic) with cans is unclear. In an initial study, commercial sour beers were packaged in cans containing one of four different liners (bisphenol A (BPA) epoxy, two BPA–non-intent (BPA-NI) epoxy, and acrylic). Corrosion, as measured by dissolved aluminum and visual degradation of the liner, was positively correlated with concentrations of lactic acid, acetic acid, and decreased pH value. After 48 wk, aluminum concentrations up to 58 mg/L were observed in one sour beer, or nearly 100-fold greater than typical dissolved aluminum concentrations in non-sour beers. Liner type did not affect corrosion. In a subsequent model sour beer study with two acrylic liners and one BPA-NI liner, molecular SO2 positively correlated with corrosion, but only at concentrations 5-fold higher than the maximum expected in sour beers. Other added components (chloride, copper, ethanol) did not affect corrosion. Addition of acetic, lactic, and phosphoric acid in varying equinormal combinations to a non-sour beer demonstrated that acetic and lactic acids (average dissolved aluminum = 2.54 mg/L following storage) promote corrosion more than phosphoric acid (average dissolved aluminum = 0.47 mg/L). Titratable acidity (TA) correlated well with corrosion, with increased dissolved aluminum observed at TA > 6 g/L as lactic acid equivalents. Organic acid corrosivity was hypothesized to relate to the proportion of acid in its neutral form, and thus these findings are relevant to producers of other beverages with high levels of organic acids.

A platform for continuous monitoring of the degradation of aluminum beverage can lids in realistic conditions through electrochemical impedance spectroscopy

The coatings on aluminum beverage can lid interiors can be prone to long-term degradation due to the high impact forces during fabrication and the corrosive nature of beverages. Multi-month tests are required to assess their resistance to this degradation. This study aims to present an innovative can lid coating testing method that incorporates in-situ Electrochemical Impedance Spectroscopy (EIS) monitoring under real-world conditions and with actual beverages. A robust testing chamber was meticulously engineered to house the 3D-shaped lid and maintain the conditions found in a beverage can. Experiments were conducted at stressed and non-stressed conditions, assessing different coatings and different beverages. The developed method has the potential to mimic the multi-month pack tests and offers a quicker, more insightful, and less laborious alternative for the lid coating degradation assessment. Ultimately, this method could help in improving the longevity and quality of aluminum beverage cans.

Monitoring the Degradation of Metallic Beverage Can Lids in Realistic Conditions Using Electrochemical Impedance Spectroscopy

Beverage can is a 30-billion-dollar business. Organic coating was applied on every beverage can, to protect the metal from being corroded by the usually acidic beverages. This presentation reports the first in situ measurement of the degradation of coating on beverage can lids, which is historically difficult because of the 3D shape of the lid, which deforms when unidirectional pressure is applied (it's much easier to do the measurement on a flat sheet of metal). We crafted a reactor to seal can lids without deformation, at elevated pressure and temperature of accelerated pack test, and with real beverages. We then carried out in situ EIS studies, which has never been done before. This work opens the door to study aluminum beverage can lids (and other 3D samples) using all the EIS methodologies previously developed for flat sheet samples. Figure 1

Perancangan Mesin Press Kaleng Minuman Menggunakan Tenaga Motor Listrik

Aluminum can waste is becoming more prevalent. There is no trash processing system, and the public does not value recycling. Used-goods collectors may damage themselves by crushing cans with a hammer to reduce volume. To improve the recycling process of aluminum beverage cans, an electric-powered press machine will be designed. The design of this press machine is intended to assist users in the waste treatment process in minimizing space, especially in the trash can storage space, and to make it easier for collectors of recyclables. This equipment is used to compress objects with a driving force. The press machine developed can reduce the volume or dimensions to increase the capacity of transmitting cans, which will subsequently be melted again. Previous research has been based on pneumatic motors and manufacturing techniques that demand a large amount of space and are therefore impractical. Meanwhile, despite having the same power of 1/2 HP, the smaller rotation speed of 272.5 RPM results in a reduced pressing force of 59.17 kgf. The motor was designed to have a power output of 1/2 horsepower and a rotational speed of 1400 revolutions per minute. The transmission system uses a 76.2-millimeter diameter pulley along with a belt that has a type 50 speed reducer ratio of 1:60. A cam, coupled with the speed reducer, moves the pressing cylinder translationally. This enables the pressing cylinder to press up to 1,380 cans per hour. The force required to press the can is 951.57 N.

A Numerical and Experimental Analysis of the Mechanical Behavior of the Aluminum Beverage Can with Internal Varnish Layers during Axial Load Force Testing.

This article presents a numerical and experimental investigation into the impact of can wall thickness and the internal varnish layer thickness on the results of an axial load force test. This study also shows the levels of thermal stresses that emerge after the drying of varnish coating, and how they affect the results of the axial load force test. This research involves the development of suitable numerical models and the experimental acquisition of stress-deformation relationships for the both can material, aluminum, and the varnish. The numerical simulation of the axial load force test has been verified through experimental tests, with a resulting difference of 8.9% between the two sets of results. The findings highlight that changes in the can wall thickness have a more pronounced effect on test outcomes compared to variations in the varnish thickness. Specifically, an increase in the can wall thickness from 90 µm to 100 µm results in a substantial 116 N increase in the force required for a can to collapse. Nevertheless, the presence of a 5 µm varnish layer also contributes measurably, increasing the can's collapse force by 21 N. These results offer valuable practical insights for manufacturers, enabling them to effectively optimize can strength characteristics.

The Impact of Temperature Conditions on the Manufacturing Process and Mechanical Behavior of Beverage Can Ends during Operation.

This article investigates the impact of temperature regimes, corresponding to various climatic zones, on the manufacturing process and operation of beverage can ends made of aluminum alloy AA5182. The production process of aluminum beverage can ends involves multiple steps, including melting, rolling, and stamping, where different temperatures can influence both the production process and the properties of the final product. Furthermore, the mechanical behavior of the final product is affected by the aging process of alloy AA5182, which progresses at varying rates depending on the temperature conditions during storage. The objective of this study is to simulate the production process under various climatic conditions using the finite element method (FEM) and experimentally investigate the dependence of the strength of alloy AA5182 can ends on storage time and temperature. The findings of the study reveal that, under temperature conditions corresponding to warmer climates, the punching force can be reduced by approximately 15% compared to production in colder climates. Additionally, the strength of the finished can exhibits a decrease of about 10% during a month of storage in a warm climate, while no significant decrease was observed in colder climates. These results hold practical significance for the beverage production industry, as the manufacturing and operation of beverage cans are localized in diverse climatic zones.

Radiolucent metallic foreign body: a case report

A 13-year-old boy who accidentally ingested an aluminum beverage can pull tab. Neck and chest radiographs did not reveal any ingested foreign body. This case report illustrates poor negative predictive value of conventional radiographs for a suspected aluminum foreign body and demonstrates superiority of CT for this purpose. In such presentations, it is imperative to have a low threshold for performing further diagnostic evaluation with CT due to the relatively high radiolucency of aluminum.

Comparison of Solidification Microstructure Evolution of Al-10Si and Recycled Aluminium Beverage Can Strips Made in a Strip Caster

A strip caster was used to cast two types of aluminium alloys: an almost eutectic Al-Si alloy (Al 10 Si) with contaminants of 0.6 Fe, 0.2 Pb, and 1.4 Sn, which exhibits a polyphase microstructure upon solidification, and recycled aluminium beverage cans made from Al 0.8 Mn alloy containing 0.4 Si, 0.5 Fe, and 0.1 Mg, which has a monophase microstructure upon solidification. The molten materials were poured at 650 oC (Al 10 Si) and 670 oC (Al 0.8 Mn, 0.4 Si, 0.5 Fe, 0.1 Mg) on a cooling slope specially designed to obtain a semisolid material. This semisolid material was then dragged between rolls at a rate of 0.2 m/s to obtain high-quality metal strips. There was less eutectic modification with larger Al-α grains in the middle region of the sheet between the fine eutectic layers, indicating a lower cooling rate. However, during the recycling of aluminium beverage cans, large grains were formed with a columnar structure at the interface of the rolls, and semisolid melts with cracks were formed between the columnar grain boundaries owing to the compression of the rolls. The middle of these grains contained smaller equiaxial grains that were subjected to dragging. The as-cast specimens were submitted to homogenisation heat treatment at 560 oC for a period of 10 h and cooled to room temperature before being cold rolled (Temper H18) and recrystallised (Temper O) to examine the effect of these treatments on the tensile mechanical properties. During cold rolling (Temper H-18), grain alignment occurred with a yield stress, maximum stress, and elongation of 209.5 MPa, 210.1 MPa, and 2.8%, respectively. The strength decreased (yield stress of 58 MPa and maximum stress of 120.2 MPa) under recrystallisation conditions (Temper O), but the ductility increased (8.9%). This is in contrast to the Al-Si (Al 10Si) strip, which exhibited a yield stress, maximum stress, and elongation of 103.3 MPa, 128.7 MPa, and 1.9%, respectively. The A1 10Si strips also fractured during cold rolling, indicating high material fragility.

A historical-technical analysis of packaging waste flows in Vienna

Urban waste management plays an important role in providing secondary raw materials for packaging waste recycling. To assess measures for this provision, material flows of packaging waste for 2006–2020 in Vienna were modeled and evaluated by the separate collection rate and sorting rate. Results showed increasing separate collection rates for the years 2006-2020 for plastic bottles (20%-35%), aluminum beverage packaging (10%-22%), and beverage cartons (10%-18%) achieved by commingled collection and more collection points. Values for other aluminum (6%-5%) and ferrous metal packaging (18%-16%), however, decreased. Glass packaging increased slightly (53%-55%) and paper packaging remained constant (56%). The sorting rate of metal packaging increased significantly due to bottom ash sorting. To increase the provision of secondary raw materials, better communication with consumers and the improvement of technical sorting of mixed waste and bottom ash should be implemented. Door-to-door collection of beverage cartons, metals, and plastics should be carefully tested and evaluated before implementation.

Pembentukan Komposit Zeolit X - Bayerit dari Perlakuan Abu Sekam Padi dan Aluminium Kemasan Produk Pangan dalam Larutan NaOH Teknis pada Suhu Ruangan

Various research efforts have been carried out to obtain efficient zeolite synthesis methods, including the use of waste as the main ingredient or carried out at room temperature. One type of zeolite that has been synthesized at room temperature is zeolite X (ZX) within a minimum of 28 days using synthetic chemicals. The purpose of this study is to explore how ZX can be formed from waste materials and NaOH technical grade solution (TGS) at room temperature for 40 days without stirring treatments. The waste materials are rice husk ash from the traditional red brick industry, aluminum beverage cans, and food packaging aluminum waste. The materials were homogeneously mixed with the NaOH TGS in such a way as to produce a mixture with a mole ratio of 7.23Na2O : 0.26Al2O3 : 1SiO2 : 280H2O, with mole ratios of Na2O/H2O and Al2O3/SiO2 that were 30% higher than the literature for ZX synthesis, respectively. The results of characterization showed that the treatment yield was ZX along with the presence of the bayerite phase, which had been formed since the 20-day observation period. The use of excess Na2O/H2O and Al2O3/SiO2 mole ratios in this study impacts the formation of bayerite first and the ability of dissolved silica to condense, thus slowing the crystallization of ZX. The result of this study led to the new finding that zeolite-bayerite composite can be synthesized directly in a simple, inexpensive, and environmentally friendly manner, where the composite materials have been reported as catalysts and adsorbents.

Study Thermal Resistance of γ-Al<sub>2</sub>O<sub>3</sub> at Various Reaction Temperatures via TGA Analysis

The discarded empty aluminium beverage cans can pose a serious environmental contamination issue. Recently, studies are now focusing on reducing and utilising solid wastes which have grown to be a significant environmental concern. Thus, this study focuses on producing γ-Al2O3 from readily available aluminium garbage cans using a Sol-gel technique and analysing its thermal properties using TGA analysis. The effect of the reaction temperatures was further investigated to comprehend the synthesis of alumina at (room temperature, 50 °C, and 70 °C) at a fixed aging duration of 12 h. Experimental findings demonstrated the potential of producing γ-Al2O3 from used aluminium cans, which may then be used as sustainable catalysts and catalytic supports for a variety of applications. The results showed that all the synthesised alumina had a good result with a maximum weight loss less than 5%; this reflected its strong stability. The alumina that was created at 70 °C reaction temperature recorded the lowest weight loss and the highest residue at 2.78% and 97.22%, respectively.

Hydrogen Sulfide Formation in Canned Wines Under Long-Term and Accelerated Conditions

<h3>Background and goals</h3> Wines in aluminum beverage cans (“canned wines”) are a rapidly growing packaging segment due to several factors, including convenience and sustainability advantages. However, canned wines have higher concentrations of hydrogen sulfide (H₂S; “rotten egg”) than wines in glass packaging. It was hypothesized that wine composition and liner selection affect H₂S formation in canned wines. <h3>Methods and key findings</h3> Commercial wines (n=10) were stored in either glass or aluminum beverage cans with one of three liners for up to 32 weeks. Wines stored in glass showed negligible H₂S production after 32 weeks. Wines stored in acrylic lined cans produced up to 1307 μg/L H₂S (median = 162 μg/L) within 8 weeks. Wines stored in BPA epoxy cans produced less H₂S (maximum = 51.8 μg/L median = 11.8 μg/L after 32 weeks), with comparable performance observed for BPA non-intent (BPA-NI) epoxy liners. H₂S formation was well-correlated with visible damage to the interior liners, but poorly correlated with dissolved aluminum. H₂S from accelerated aging of wines with lined aluminum coupons (50 ºC, up to 14 d, anoxic conditions) correlated with H₂S produced during long-term aging, but not with H₂S produced by unlined aluminum coupons. Molecular SO2 was best correlated with increased H₂S production in epoxy lined cans during long-term aging of commercial wines, and similar results were observed under accelerated conditions with coupons in a model-wine factorial experiment. <h3>Conclusions and significance</h3> Maintaining low molecular SO2 (less than ~0.4 mg/L) and using epoxy liners (BPA or BPA-NI) appear critical for ensuring low H₂S during long-term can storage up to 8 months. The accelerated aging approach described in this work may be applicable to other corrosive beverages.

Comparing deterministic and statistical approaches for predicting �short can� defects in aluminium beverage can production

Comparing deterministic and statistical approaches for predicting �short can� defects in aluminium beverage can production

Utilization of recyclable aluminum cans as fins in a vertical solar air heating system: An experimental and numerical study

Heating loads cover a large portion of the total energy consumption of buildings. Solar air heating is a sustainable and low-cost alternative for heating applications instead of employing fossil energy sources. In this work, vertical solar air collectors (VSACs) have been developed to be utilized in buildings. Moreover, aluminum beverage cans have been utilized as fins to improve the effectiveness of the collector system. In the initial stage of the study, various aluminum can configurations have been analyzed numerically. Numerical findings showed that symmetric placement of aluminum cans gave better results in comparison to the hollow VSAC and VSAC with asymmetric can placement. In this regard, symmetric can configuration has been applied to the VSACs with two plenum thicknesses including 100 mm and 150 mm for experimental investigation. Experiments have been performed at two flow rates and thermal efficiencies of the tested VSACs were found between the range of 55.16–76.22%. Also, average exergy efficiency values for VSACs with higher and lower plenum thicknesses were obtained between the ranges of 8.34–8.85% and 9.84–10.36%, respectively. The overall findings of the present research exhibited successful utilization of recyclable aluminum beverage can-integrated VSACs for air heating.

Separation of oil-water emulsions by a novel packed bed electrocoagulation (EC) process using anode from recycled aluminum beverage cans

Electrocoagulation (EC) is an emerging technology for the elimination of oil and COD content from oily wastewaters. However, higher operating costs and electrode passivation are pressing challenges for its wide speared application. To overcome this setback, the present work has attempted to develop a new and inexpensive electrode using recycled aluminum (Al) beverage cans for the treatment of oily wastewater by electrocoagulation (EC) technology. It could be an alternative to conventional plate or tube electrodes in the EC process, it is the first contribution into the literature. In current work, recycled Al beverage cans filled with steel wool was used as anode, and commercial stainless-steel mesh (304) with cylindrical shape was used as cathode. The main EC performance measure was COD removal efficiency, impacts of significant process parameters in the EC process (such as operating voltage, electrocoagulation time, stirring rate, and NaCl concentration) on the effectiveness of EC process were investigated by using response surface methodology (RSM) based Box-Behnken Design (BBD) model. The RSM analysis results demonstrated that the highest COD removal rate of 93.53% was achieved under optimal conditions of operating voltage (15 V), electrocoagulation time (10 min), stirring rate (250 rpm), and NaCl concentration (1 g/L). In addition, energy consumption analysis was performed, an electrical energy efficiency of 0.160 kWh/kg COD was achieved. Afterward, ATR-FTIR spectroscopy, scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), and XRD analysis were performed under optimal conditions to characterize anode, and generated sludge during the EC process. Collectively, the findings in this study paves the way toward the development of sustainable EC technology for separation of emulsified oil-water mixtures, which gives the importance of the circular economy and sustainable management of industrial wastewaters.

Synthesis and Characterization of Fe2O3 Nanoparticles Reinforced to Recycled Industrial Aluminium Scrap &amp; Waste Aluminium Beverage Cans for Preparing Metal Matrix Nanocomposites

Increased material demand in all sectors is primarily due to exponential growth in population to fulfill human needs and comforts. Recycling of collected aluminium beverage cans and Al 6061 alloy scraps from industries ensures energy savings with reduced environmental problems in fabricating composite parts economically. The iron oxide (α-Fe2O3) nanoparticles were prepared by precipitation method using ferric chloride and ammonia as a precursor. The prepared nanoparticles were characterized by using Transmission Electron Microscope (TEM), X-Ray Diffraction (XRD) and Fourier Transform Infrared (FTIR). Stir cast processing route ensures uniform mix of reinforcement nanoparticles in matrix material. The prepared nanocomposites (matrix: Al Scrap (90% Scrap Al 6061 alloy + 10% Waste Al can); reinforcement: 2%, 4% and 6% wt. of Al matrix) were mechanically characterized for hardness and tensile strengths. It was observed that, increased percent of Fe2O3 nanoparticles in the metal matrix nanocomposite (MMCs) resulted in significant increase in hardness and tensile strength values. Fractography analysis examined viz. scanning electron microscope (SEM) revealed a ductile failure for as-cast Al scrap followed by brittle failure in Al MMC's.

Experimental and Numerical Assessment on Failure Pressure of Textured Pipelines

Abstract A series of physical tests and finite element (FE) analyses are conducted to evaluate the failure of smooth (conventional) and textured (proposed concept) pipes. To do so, hydrostatic pressure tests are performed on aluminum beverage cans (ductile failure) and additively manufactured Ti6Al4V-0406 titanium pipes (brittle failure). Mechanical material properties are obtained from tensile tests of coupon samples. In the absence of physical burst pressure tests, FE models are validated against experimental results of external pressure tests and are used to predict the buckle initiation (Pi) and burst pressure (Pb) capacity of the textured pipes with different number of circumferential triangles, N, and base angles, α. Results show that buckle initiation pressures of the textured concept is 2.34 and 1.80 times greater than those of the smooth aluminum cans and titanium pipes, respectively. However, the burst pressure of the textured pipe can only get 3% greater than the smooth pipe. Based on the current results, a textured pipe with N = 6 and α = 30 deg is the optimum textured design.

Baverage Container Deposit Return System in Slovakia: Insights after One Year of Its Introduction

Every year, consumers buy more and more beverages packaged in disposable PET bottles and aluminium cans. Most of this packaging is used only once and also very often pollutes the environment due to inappropriate consumer behaviour. Deposit return systems for bottles and aluminium cans play an important role in preventing such situations, offering consumers a financial incentive, a deposit that motivates them to return used packaging. The purpose of the article was to describe consumer and company insights related to the new deposit return system for PET bottles and aluminium beverage cans in Slovakia, based on the authors’ own research and secondary research. Furthermore, the authors also wanted to show the solutions of some companies that try to facilitate to consumers the process of returning disposable packaging.

Forming of Titanium Corrugated Clad Cups using Roller Ball Die

Deep drawing, which is one of the pressing processes, is a processing method suitable for mass production because there are few manufacturing processes. Therefore, it is used in industrial products such as motor cases and fuel tanks, and daily necessities such as aluminum beverage cans and cooking pots. In recent years, there has been a demand for improved functionality of the cup itself in products made by deep drawing. The development of new processing methods and the establishment of processing using alternative materials are progressing. On the other hand, titanium, which is a kind of light metal, is expected as a next-generation material because it has excellent properties. Pure titanium is relatively ductile at room temperature and has excellent corrosion resistance, so it is used in heat exchangers and chemical plant components that come into contact with corrosion media. In the present study, to make a lightweight and functional cup, we tried to form the titanium clad cup with voids like the cross section of corrugated paper. The unique die with a steel ball attached to the shoulder of the die was combined with a normal die for deep drawing. The formability of the clad cup and the adhesiveness of the clad cup were investigated. By properly adopting the gap between the die and the blank with respect to the thickness of the blank sheet, it was possible to form the titanium paperboard cups with excellent stretchability.

Stereological Measurements for Evaluation of Non-Returned Aluminium Beverage Cans Subject to a Deposit and Return System

Stereological Measurements for Evaluation of Non-Returned Aluminium Beverage Cans Subject to a Deposit and Return System