Surfactants in Sludge-Amended Agricultural Soils: A Review

Cirelli, Alicia Fernández; Ojeda, Carlos; Castro, Mariano J. L.; Salgot, Miquel

doi:10.1007/978-1-4020-9654-9_12

Cited by 26 publications

(23 citation statements)

References 72 publications

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“…10 The global surfactant market for detergent formulations is more than 18 MT, which is worth 19 $ billion per year. 11 The market value of food hydrocolloids is about 4.4 $ billion. 9 Large quantities of surfactants are continuously released into the environment, where they may or may not be degraded, depending on their structure.…”

Section: Introductionmentioning

confidence: 99%

Strategies for structuring diverse emulsion systems by using wood lignocellulose-derived stabilizers

Mikkonen

2020

Green Chem.

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Wood biomass is an abundant renewable source of materials, but due to the accelerating depletion of natural resources, it is important to explore new ways to use it in a more sustainable manner. Modern technologies enable the recovery and valorization of the main components of wood-namely, cellulose, lignin, and hemicelluloses-contributing to sustainability. However, the method of isolation and resulting structure and purity of lignocellulosic materials determine their functionality and applicability. This review discusses the properties of all three main wood-based compounds that can stabilize emulsions, a class of industrial dispersions that are widely used in life science applications and chemicals. Due to the multibillion-dollar annual market for hydrocolloids, the food, pharmaceutical, cosmetic, coating, and paint industries are actively seeking new sustainable emulsion stabilizers that fulfill the demanding requirements regarding safety and functionality. Wood-derived stabilizers facilitate various mechanisms involved in emulsion stabilization: (1) development of amphiphilic structures that decrease interfacial tension, (2) stabilization of interfaces by particles according to the Pickering theory, and (3) increase in the viscosity of emulsions' continuous phase. This review presents pathways for treating cellulose, lignin, and hemicelluloses to achieve efficient stabilization and provides suggestions for their broad use in emulsions.

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Section: Introductionmentioning

confidence: 99%

Strategies for structuring diverse emulsion systems by using wood lignocellulose-derived stabilizers

Mikkonen

2020

Green Chem.

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“…The use of such wastewater has been recognized as an important management option for farmland irrigation, especially in arid regions, where water resources are scarce and wastewater is the only or the major water resource [3]. Surfactants, the widely used chemical additives in household cleaning and personal care products [4], are generally the dominant source of xenobiotic organic compounds found in sewage and municipal wastewater [5,6], and their concentrations meet or exceed several or even tens of grams per kilogram [7][8][9][10]. Consequently, large amounts of surfactants are regularly released into the terrestrial environment, particularly in developing countries where wastewater is poorly treated or simply untreated before irrigation [11].…”

Section: Introductionmentioning

confidence: 99%

“…At this point, the hydrophobic non-polar regions make maximum contact with one another to form a hydrocarbon-like core, with the hydrophilic polar-regions in maximum contact with water [19]. This formation of micelles will in turn (1) reduce the surface tension and interfacial tension of the aqueous solution [9,15,16]; and (2) enhance the solubility of water-insoluble compounds such as hydrophobic organic compounds (HOC) [9,14]. The resulting surfactants may then be potentially used in the in-situ flushing of HOC from soils [20,21].…”

Section: Introductionmentioning

confidence: 99%

Influence of Anionic Surfactant on Saturated Hydraulic Conductivity of Loamy Sand and Sandy Loam Soils

Peng

Darnault

Baveye

et al. 2017

Water

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Surfactants released into the terrestrial environment in large amounts can potentially alter the physical, chemical and biological properties of soils, particularly the saturated hydraulic conductivity (K s ). Unfortunately findings regarding this process are quite limited. In this study, column tests were used to analyze the effects of Aerosol 22, a widely used anionic surfactant, on K s of loamy sand and sandy loam soils. Solutions were injected into columns from the bottom with controlled pressure heads. Both the overall K s of columns and the K s of 6 layers at distances of 0-1 cm, 1-3 cm, 3-5 cm, 5-7 cm, 7-9 cm, and 9-10 cm from the bottom, were continuously monitored before and after the surfactant injections. Results showed that the overall K s of all columns decreased after 2-4 pore volumes of the surfactant injections. However, stabilization and even increase at the beginning of the surfactant injection was also observed due to the different K s variations in different layers. Specifically, a surfactant injection of 2-4 pore volumes continuously decreased the K s of the 0-1 cm layers which yielded a K s reduction of two orders of magnitude and dominated the K s variations of the column. In contrast, an increase in the K s of the 1-3 cm and 3-5 cm layers was more likely, while K s variation of the 5-10 cm layers was less likely. We hypothetically attributed the K s variations to the swelling of clay, the collapse of soil aggregates and subsequent particle displacements from surfactant adsorption, which caused pore clogging in the bottom 0-1 cm layer and higher porosities in the layers above. The adsorption of the surfactant aggregates and crystallization were also possibly thought to cause a pore clogging in the bottom layer thus decrease the surfactant concentration from the inlet, the severity of which affects these layers less at greater distances from the inlet. In view of the uncertainty showed by the experimental results, we also suggest to include more replicate columns in future studies, so as to increase the repeatability of the measurements.

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“…Surfactants are categorized in four groups: anionic, cationic, nonionic, and amphoteric (5). Among these groups, anionic and cationic surfactants are more produced because of their vast usage and popularity, among which, anionic ones are the commonest (6). Linear alkylbenzene sulfonate (LAS) is one of the synthetic anionic surfactants which has gained the alkyl chain from C10-C13.…”

Section: Introductionmentioning

confidence: 99%

Removal of Sodium Dodecylbenzene Sulfonate by Moving Bed Biofilm Reactor, Using Synthetic Media

2014

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Background: Detergents and difficulties of their presence in the water and wastewater cause various problems such as foam production, anomalies in the growth of algae, and accumulation and dispersion in aqueous environments. Objectives: The aim of this study was to examine and compare the moving bed biofilm reactor with another reactor without media (carries) for anionic surfactants removal. Materials and Methods: In this study, the media was from the 2H Company with specific surface of 535 m 2 /m 3 and the experiment reactor was made of a 4-mm plexiglass. The experiment was conducted by using two reactor, as one of them was without media, with exactly similar conditions to compare their operations. The standard method (MBAS) was used to measure the anionic surfactant. The concentrations of the examined anionic surfactant were 50, 100, 200, 300, and 400 mg/L in hydraulic retention times (HRTs) of 72, 24 and 8 hours. Results: The removal percentage for both reactors at 50 mg/L concentration of pollutant was same, but after gradually increasing the pollutant concentration and decreasing the HRT, the media-containing reactor had significant efficiency in comparison with the other one. The optimum condition in this experiment was obtained at HRT of about 24 hours and 200 mg/L pollutant concentration with 99.2% removal. Conclusions: Regarding the anionic surfactant standard in Iran which is 1.5 mg/L for surface water discharge, using this process is suitable for treating municipal wastewater and industrial wastewater, containing 100-200 mg/L pollutant. However, for the industries that produce detergents, discharging more than 200 mg/L surfactants to the wastewater, using supplementary treatments for achieving the discharge standard are required.

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Surfactants in Sludge-Amended Agricultural Soils: A Review

Cited by 26 publications

References 72 publications

Strategies for structuring diverse emulsion systems by using wood lignocellulose-derived stabilizers

Strategies for structuring diverse emulsion systems by using wood lignocellulose-derived stabilizers

Influence of Anionic Surfactant on Saturated Hydraulic Conductivity of Loamy Sand and Sandy Loam Soils

Removal of Sodium Dodecylbenzene Sulfonate by Moving Bed Biofilm Reactor, Using Synthetic Media

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