Bioconversion of industrial wastes: paint sludge from automotive manufacturing

Salihoğlu, Nezih Kamil; Uçaroğlu, Selnur; Salihoğlu, Güray

doi:10.1007/s10163-018-0764-z

Cited by 19 publications

(5 citation statements)

References 25 publications

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“…The main origin of this type of waste is from metal painting operation in automotive and appliances industries (Zhang et al, 2018a). They consist of fine particles that are lost during the procedure of painting and are not commonly reused (Salihoglu et al, 2018). Owing to the powdered nature of residual paint, they are especially difficult to dispose.…”

Section: Introductionmentioning

confidence: 99%

Non-conventional stabilisation/solidification treatment of industrial wastes with residual powdered paints

Vaccari

Castro

2019

Waste Manag Res

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Stabilisation/solidification technologies are widely used for rendering industrial wastes inert. In this study, residual powdered paints were applied to treat different types of industrial wastes by stabilisation/solidification: Fumes from steel-making process, sludge from coagulation/flocculation treatments and powders from brushing and polishing metallic objects. Stabilisation/solidification trials were performed both under static conditions and in motion. It was observed that the residual paints could polymerise well in 60 min at 120 °C. The addition of water during the treatment resulted in highly porous and friable materials and, therefore, is not recommended. The mixture between wastes and paint influenced polymerisation. Specific heating conditions needed to be tested for each waste, varying from 80 °C to 150 °C. Significant reduction on leachability after treatment could be reached in most cases. Reduction on chlorides release up to 92.0% were achieved. Contents of other elements on the leachates, such as copper, molybdenum, nickel, zinc and dissolved organic carbon, could also be reduced in percentages up to 96.9%, 97.6%, 98.8%, 95.7% and 96.9%, respectively. For some types of wastes, however, especially those containing high contents of copper and mineral oils, the treatment was ineffective. Polymerisation in motion apparently improved binding capacity, but tests with increased content of paints are recommended to reduce the release of dissolved organic carbon.

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Section: Introductionmentioning

confidence: 99%

Non-conventional stabilisation/solidification treatment of industrial wastes with residual powdered paints

Vaccari

Castro

2019

Waste Manag Res

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“…14,16−21 The impact of dyestuffs found in this wastewater cannot be ignored, as they possess toxic properties toward aquatic organisms, disrupt the proper functioning of conventional wastewater treatment systems, and negatively affect the aesthetic quality of the environment. 22,23 Paints, known for their carcinogenic and mutagenic nature and primary source of hazardous wastes 24,25 are also capable of causing allergic reactions and skin problems. Due to their artificial composition and complex aromatic molecular structure, dyestuffs exhibit high environmental stability and limited degradation capabilities.…”

Section: Introductionmentioning

confidence: 99%

Automotive Wastewater Treatment Processes and Technologies: A Review

Ullah,

Innocenzi,

Ayedi

et al. 2024

ACS EST Water

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Global industrialization and urbanization have led to a surge in wastewater production, with the industrial sector accounting for 22% of global water consumption. Regrettably, up to 80% of treated industrial effluent is discharged directly into water bodies, posing severe environmental contamination risks. This underscores the critical necessity for sustainable wastewater management. Among the industries that consume large amounts of water is the automotive. Automotive wastewater, primarily from emulsion and paint processes, contains toxic substances such as paints, metals, and organic compounds. Additionally, dyestuffs and paints contribute to environmental challenges due to their toxicity and slow degradation. This review explores different wastewater treatment approaches, including physicochemical, biological, and membrane technologies, to tackle the complexity of automotive wastewater. Physico-chemical methods effectively remove pollutants but generate sludge. Biological treatments face challenges related to heavy metals and nonbiodegradable compounds. Membrane separation, particularly forward osmosis, shows potential as an energy-efficient solution. The review addresses challenges in automotive wastewater treatment, like sludge management and heavy metal inhibition. Advanced approaches, such as enzyme-based treatments and natural materials like banana peels, and zeolites natural and synthetic are discussed for their potential to enhance efficiency. This article offers insights into the current state of automotive wastewater treatment, emphasizing the need for green solutions to protect public health and the environment.

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“…More recently, some authors have proposed biological processes for recovering water-based PS (Tian et al 2012a , b ; Salihoglu et al 2018 ). The high amounts of organic carbon and nitrogen and the low solvent content of water-based PS made such a waste product attractive to be composted or biodried.…”

Section: Introductionmentioning

confidence: 99%

“…The high amounts of organic carbon and nitrogen and the low solvent content of water-based PS made such a waste product attractive to be composted or biodried. The recent study of Salihoglu et al ( 2018 ) demonstrated that, although the concentration of some metals, like nickel (Ni) and tin (Sn), in the final composted product exceeded the legal compost limits, the calorific value made the composted waste suitable to be used as an additional fuel in cement kilns.…”

Section: Introductionmentioning

confidence: 99%

Cost analysis and environmental assessment of recycling paint sludge in asphalt pavements

Ruffino

Farina

Dalmazzo

et al. 2020

Environ Sci Pollut Res

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Paint sludge (PS) is a waste product coming from spray application of paints in automotive industry. For the first time, this work assessed the economic costs and environmental impacts connected to recycling PS in bituminous binders for asphalt pavement applications. Previous works have demonstrated that PS could be used as a replacement of up to 20% (w/w) of neat bitumen in the production of hot mixture asphalts (HMAs), without worsening the technical performances of pavements. The annual production of PS from Italian automotive plants (3000 t/year) could be accommodated in a paved area of 1.64 km2 that, when employed in local roads, with an average width of 5 m, corresponds to approximately 330 km. Costs for treating PS to be prepared for recycling resulted in 144 €/t raw PS. This cost was of the same order, or even less, of that required for PS incineration or disposal in a landfill for hazardous waste (250–300 €). The LCA analysis revealed that the production of HMAs by employing a binder that contains 20% (w/w) of PS, reduced the gross energy requirement (GER) and global warming potential (GWP) indexes by 15% and 39%, respectively, compared to an HMA produced with the traditional process.

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Bioconversion of industrial wastes: paint sludge from automotive manufacturing

Cited by 19 publications

References 25 publications

Non-conventional stabilisation/solidification treatment of industrial wastes with residual powdered paints

Non-conventional stabilisation/solidification treatment of industrial wastes with residual powdered paints

Automotive Wastewater Treatment Processes and Technologies: A Review

Cost analysis and environmental assessment of recycling paint sludge in asphalt pavements

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