Utilization of waste cathode ray tube funnel glass for ultra-high performance concrete

Liu, Tiejun; Wei, Huinan; Zou, Dujian; Zhou, Ao; Jian, Hongshu

doi:10.1016/j.jclepro.2019.119333

Cited by 111 publications

(39 citation statements)

References 48 publications

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“…The recycling of CBs and turning this waste into a resource can be a solution to cigarette butt pollution. Researchers have developed methods to recycle different waste materials as aggregates in construction materials [20]. Góra et al (2019) utilized recycled LCD (liquid crystal display) as fine aggregate in concrete.…”

Section: Use Of Waste Cigarette Butts In Construction Materialsmentioning

confidence: 99%

Possible Recycling of Cigarette Butts as Fiber Modifier in Bitumen for Asphalt Concrete

2020

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Littering waste is among the top environmental issues in the world, and the management of the waste has turned into a challenge in almost every city. It has been reported that 75% of smokers dispose of their cigarette butts (CBs) on the ground, even in public places. Researchers have discovered that CBs make up more than one-third of the total littered waste on the planet. Cigarette butts predominantly consist of a cellulose acetate fiber (plastic)-based filter wrapped in paper. Waste CBs contain burnt tobacco and tar, along with many other toxic chemicals. They take years to biodegrade depending on the environmental conditions, and toxic chemicals leach out and contaminate the environment. As part of an ongoing project, this paper presents a novel and sustainable technique to recycle cigarette butts in bitumen for the construction of flexible pavements. In this research, CBs have been pre-processed and mixed with bitumen classes C320, C170, and PMB A10E as a fiber modifier. Comprehensive laboratory investigations, including a penetration test, softening point test, and viscosity test, have been performed along with a binder drain off test to evaluate the performance of the modified samples. During this investigation, samples were prepared with 0.3% cellulose fiber, 0.2%, 0.3% 0.4%, and 0.5% CBs. The results of the CB-modified samples were compared with the sample with cellulose fiber and fresh bitumen (0% fiber). The results show that the physical and rheological properties of bitumen incorporating CBs improve significantly, and CBs could be used instead of virgin cellulose fiber as a fiber modifier.

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Section: Use Of Waste Cigarette Butts In Construction Materialsmentioning

confidence: 99%

Possible Recycling of Cigarette Butts as Fiber Modifier in Bitumen for Asphalt Concrete

2020

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“…Test results showed that the mechanical properties slightly affected by replacement. Most recent study conducted by Liu et al [21] to examine the employment of hazard waste materials (cathode ray tube glass) as sand replacement in reactive powder concrete. The findings of the study provided an operative alternative to reutilizing of this hazard waste without limitations on the replacement ratio and safety due to the satisfactory properties of the recycled reactive powder concrete.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of Modified Reactive Powder Concrete with Waste Materials Powder Replacement

Radhi

Rasoul

Alsaad

2021

Period. Polytech. Civil Eng.

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Across the world, a huge amount of waste materials is deposited from different industrial or construction activities. Out of this massive waste quantity, a petite is recycled and remaining is dumped in vulnerable lands. This paper deals with the potential utilization of solid waste in reactive powder concrete, practically powdered glass originating from waste glass bottles and powdered ceramics tile from waste of construction process. First, the optimum ratio of waste pozzolanic material (ceramics to glass ratio) was obtained by pozzolinic activity test. Then, the optimal waste pozzolanic material was incorporated in reactive powder concrete at several substitution levels. The waste pozzolanic material in 5 %, 10 %, 15 %, 20 %, and 25 % were added in the reactive powder concrete mixes as fractional supplement of silica fume. Strength and water absorption of the modified reactive powder concrete were evaluated. A significant enhancement was observed in mechanical behavior of modified reactive powder concrete containing 15 % waste pozzolanic material. Results directed irrelevant raise in water absorption as increasing the waste replacement material.

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“…Recycling of lead from waste CRT glass is an important issue because lead is classified as a neurotoxin that can accumulate in the soft tissues and bones, causing serious health issues [ 9 , 10 , 11 ]. The high content of lead oxide (23%) in CRT funnel glasses is an important factor that limits its landfill storage and the recycling process, as result many states have passed bans on putting CRTs in landfills or incinerators [ 12 , 13 ]. Additionally, CRT funnel glass, due to its composition, is unsuitable for applications where metal oxides could leach into food products or ground water [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Chemical–Electrochemical Process Concept for Lead Recovery from Waste Cathode Ray Tube Glass

et al. 2021

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This paper presents a novel approach for the recovery of lead from waste cathode-ray tube (CRT) glass by applying a combined chemical-electrochemical process which allows the simultaneous recovery of Pb from waste CRT glass and electrochemical regeneration of the leaching agent. The optimal operating conditions were identified based on the influence of leaching agent concentration, recirculation flow rate and current density on the main technical performance indicators. The experimental results demonstrate that the process is the most efficient at 0.6 M acetic acid concentration, flow rate of 45 mL/min and current density of 4 mA/cm2. The mass balance data corresponding to the recycling of 10 kg/h waste CRT glass in the identified optimal operating conditions was used for the environmental assessment of the process. The General Effect Indices (GEIs), obtained through the Biwer Heinzle method for the input and output streams of the process, indicate that the developed recovery process not only achieve a complete recovery of lead but it is eco-friendly as well.

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Utilization of waste cathode ray tube funnel glass for ultra-high performance concrete

Cited by 111 publications

References 48 publications

Possible Recycling of Cigarette Butts as Fiber Modifier in Bitumen for Asphalt Concrete

Possible Recycling of Cigarette Butts as Fiber Modifier in Bitumen for Asphalt Concrete

Mechanical Behavior of Modified Reactive Powder Concrete with Waste Materials Powder Replacement

Chemical–Electrochemical Process Concept for Lead Recovery from Waste Cathode Ray Tube Glass

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