Laundry Wastewater Treatment: Review and Life Cycle Assessment

Santiago, Dunia E.; Rodríguez, María Liliana Ávalos; Melián, E. Pulido

doi:10.1061/(asce)ee.1943-7870.0001902

Cited by 15 publications

(11 citation statements)

References 93 publications

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“…The water scarcity issue can be addressed through efficient water reuse and recycling, thereby reducing the need for and load of wastewater treatment before the water is discharged into water bodies and then treating again for usage [1,2]. Reusing water and detergent from the laundry industry is an attractive method to combat water shortage; it increases economic viability and protects the environment due to the detrimental impact of excess waste detergent [3].…”

Section: Introductionmentioning

confidence: 99%

“…Some surfactants may contain toxic components and promote the growth of some bacterial populations that are more sensitive to laundry wash toxins [4,5]. Industrial laundry requires 15 L/kg of freshwater to wash process garments [6], while hotels and hospitals consume at least 24 L of freshwater per occupied room a night for laundering [1]. Meanwhile, 60-140 L of freshwater is used per washing cycle in residential laundries [7].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ultra-Low-Pressure Membrane Filtration for Simultaneous Recovery of Detergent and Water from Laundry Wastewater

Khery¹,

Daniar²,

Nawi

et al. 2022

Membranes

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Reusing water and excess detergent from the laundry industry has become an attractive method to combat water shortages. Membrane filtration is considered an advanced technique and highly attractive due to its excellent advantages. However, the conventional membrane filtration method suffers from membrane fouling, which restricts its performance and diminishes its economic viability. This study assesses the preliminary performance of submerged, gravity-driven membrane filtration—under ultra-low trans-membrane pressure (△P) of <0.1 bar—to combat membrane fouling issues for detergent and water recovery from laundry wastewater. The results show that even under ultra-low pressure, the membrane suffered from compaction that lowered its permeability by 14% under △P of 6 and 10 kPa, with corresponding permeabilities of 2085 ± 259 and 1791 ± 42 L/(m2 h bar). Filtration of a detergent solution also led to up to 8% permeability loss due to membrane fouling. During the filtration of laundry wastewater, 80–91% permeability loss was observed, leading to the lowest flux of 15.6 L/(m2·h) at △P of 10 kPa, 38% lower than △P of 6 kPa (of 25.2 L/(m2·h)). High △P led to both the membrane and the foulant compaction inflating the filtration resistance. The system could recover 83.6% of excess residual detergent, while most micelles were rejected (ascribed from 71% of COD removal). The TDS content could not be retained, disallowing maximum resource recovery. A gravity-driven filtration system can be self-sustained with minimum supervision in residential and industrial laundries. Nevertheless, a detailed study on long-term filtration performance and multiple cleaning cycles is still required in the future.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultra-Low-Pressure Membrane Filtration for Simultaneous Recovery of Detergent and Water from Laundry Wastewater

Khery¹,

Daniar²,

Nawi

et al. 2022

Membranes

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show abstract

“…Bibliometric analysis is a convenient statistical tool to evaluate the published documents in a particular research area to understand the trend, metrics and influence of the publication in the related research field (Mao et al 2021;Santiago et al 2021). The tool helps in identification of patterns between relatedness and performance of authors, countries, journals and institutions (Ismail et al 2021).…”

Section: Bibliometric Analysismentioning

confidence: 99%

Advances in treatment of coking wastewater – a state of art review

Tamang

Paul

2021

Water Science and Technology

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Coking wastewater poses a serious threat to the environment due to the presence of a wide spectrum of refractory substances such as phenolic compounds, polycyclic aromatic hydrocarbons and heterocyclic nitrogenous compounds. These toxic substances are difficult to treat using conventional treatment methods alone. In recent years much attention has been given to the effective treatment of coking wastewater. Thus, this review seeks to provide a brief overview of recent developments that have taken place in the treatment of coking wastewater. In addition, this article addresses the complexity and the problems associated with treatment followed by a discussion on biological methods with special focus on bioaugmentation. As coking wastewater is refractory in nature, some of the studies have been related to improving the biodegradability of wastewater. The final section focuses on the integrated treatment methods that have emerged as the best solution for tackling the highly unmanageable coking wastewater. Attention has also been given to emerging microwave technology which has tremendous potential for treatment of coking wastewater.

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“…In fact, 15 L of water are used for each 1 kg of items cleaned at a laundry facility, which also takes part of 10% of the municipal sewer discharge [1]. In accommodation providers such as residences, hospitals and hotels, 12-25 L kg −1 of textile wastewater is produced [2]. The water quality parameters of these wastewaters will vary with the degrees of soiled objects cleaned, and with the type and amount of the detergents used in the cleaning process [3].…”

Section: Introductionmentioning

confidence: 99%

“…Surfactants from different classes are used in laundry detergent formulation, often at concentration ranges varying from 58 to 1,000 mg L −1 [4][5][6][7]. These surfactants are classified into three groups: anionic, cationic and nonionic, from which anionic and nonionic surfactants are the most employed in laundering processes, while cationic surfactants are reported to present bactericide properties [2]. Besides the presence of surfactants found in the formulation of detergents and softeners, laundry wastewaters may contain suspended solids, salts, nutrients, organic content, and pathogens [8].…”

Section: Introductionmentioning

confidence: 99%

Interaction between surfactants of different classes and nanofiltration membranes

Nunes¹,

Ferraz

Kronemberger³

2022

Sci. Plena

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The presence of surfactants in aquatic environments may alter the water quality parameters. Nanofiltration is a promising technique that can separate surfactants from water with high rejections. Nevertheless, negative charges on nanofiltration membranes could facilitate the occurrence of electrostatic interactions between the charged surfactants and the surface of these membranes, increasing the membrane-fouling tendency. In this work, the interaction of surfactants commonly found in residential laundry wastewater with membranes used in nanofiltration was investigated. For this purpose, the surface, and transport properties of four commercial membranes were analyzed. The zeta potential of the NF90 membrane in the presence of individual and mixture of surfactants was performed to evaluate the effect of adsorption of these surfactants on the performance of the membrane. Additionally, a central composite rotatable design (CCDR) and response surface model were applied to investigate the simultaneous effect of the initial concentration of CTAB and SDS ([CTAB + SDS]0) and pH on the NF90 permeate fluxes and rejections. It was shown that surfactant adsorption varies with the type of surfactant and membrane. Moreover, adsorption played an important role in NF90 membrane fouling, mainly for the cationic surfactant in individual solutions and in the mixture of surfactants. Besides adsorption, pore blocking may have affected the performance of nanofiltration for higher concentrations of surfactants. Finally, by the application of the central composite rotatable design (CCDR), it was possible to find the best conditions of pH and initial concentration of surfactants for achieving higher fluxes and rejections by the NF90 membrane.

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Laundry Wastewater Treatment: Review and Life Cycle Assessment

Cited by 15 publications

References 93 publications

Ultra-Low-Pressure Membrane Filtration for Simultaneous Recovery of Detergent and Water from Laundry Wastewater

Ultra-Low-Pressure Membrane Filtration for Simultaneous Recovery of Detergent and Water from Laundry Wastewater

Advances in treatment of coking wastewater – a state of art review

Interaction between surfactants of different classes and nanofiltration membranes

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