Adsorbent

Pourhakkak, Pouran; Taghizadeh, Mohsen; Taghizadeh, Ali; Ghaedi, Mehrorang

doi:10.1016/b978-0-12-818805-7.00009-6

Cited by 39 publications

(17 citation statements)

References 446 publications

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“…One of the minerals found in both soil types is Kaolinite, which is a non-swelling, soft clay mineral that is plastic in nature; moreover, Kaolinite is assumed to be the least reactive among the clay minerals [11]. It can also be noted that the obtained plasticity index of local clay and polyurethane-clay when tested using the ASTM standard reflected a highly plastic property, which agrees with the highly plastic characteristic of Kaolinite [11]. The other mineral detected through XRD analysis is Quartz, which is a mineral present in almost all parent materials and inherited by silt and sand [12].…”

Section: Xrd Analysis Of Polyurethane-claymentioning

confidence: 99%

Effectiveness of Compacted Polyurethane-Clay as a Sanitary Landfill Liner

Frianeza¹

2022

GEOMATE

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Sanitary landfill is a waste disposal facility that has control over the potential impact of solid waste by using impermeable liners to prevent contamination of the environment. Several studies improved the impermeability of compacted clay liners by adding bentonite. However, bentonite is an expansive soil susceptible to volume change that would cause the deterioration of the sanitary landfill liner. Hence, the study aimed to investigate the effectiveness of compacted clay mixed with polyurethane as a sanitary landfill liner since polyurethane is a polymer known for its stability and impermeability. Through experimentation using a rigid wall permeameter, it was inferred that the hydraulic conductivity of the compacted polyurethane-clay is acceptable as a sanitary landfill liner. On the other hand, the compacted clay with the same initial void ratio as the compacted polyurethane-clay is not an acceptable landfill liner. Thus, the changes in the soil structure induced by adding polyurethane to the clay has a significant effect on the permeability characteristics.

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Section: Xrd Analysis Of Polyurethane-claymentioning

confidence: 99%

Effectiveness of Compacted Polyurethane-Clay as a Sanitary Landfill Liner

Frianeza¹

2022

GEOMATE

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“…Popular adsorbents that are generally used include activated carbon, graphene, zeolites, polymers, layered double hydroxides, and clay-bentonite (Funes et Natural material improvement has been raised as an urgent research topic for obtaining an eco-friendly material for wastewater treatment. Recently, raw materials from household wastes, agricultural products, industrial waste, marine materials, and soil are transformed to obtain an effective adsorbent (Pourhakkak et al, 2021). Bentonite is included in the clay mineral in the soil structure and is abundant in nature.…”

Section: Introductionmentioning

confidence: 99%

Ammonium-Assisted Intercalation of Java Bentonite as Effective of Cationic Dye Removal

Hakim¹,

Mohadi²,

Mardiyanto³

et al. 2023

J. Ecol. Eng.

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Modification of Java bentonite assists by the multi-step intercalation of sodium and ammonium ions under lowtemperature preparation. The adsorbent was examined to remove rhodamine B and methylene blue dyes in an aqueous solvent. The analysis of structural changes conducted by XRD analysis showed the peak shifting from 19.89° to 16.1° and specific peak spectra FTIR of 2846.93 cm -1 due to increase basal spacing from ammonium intercalation. The total capacities of NH-bentonite, Na-bentonite, and Natural Bentonite adsorption to rhodamine B were 192.308 mg/g, 136.936 mg/g, and 116.279 mg/g, respectively, under acidic conditions. Furthermore, the total capacities of NH-bentonite, Na-bentonite, and Natural Bentonite adsorption to methylene blue were 270.27 mg/g, 158.73 mg/g, and 136.986 mg/g, respectively, under alkaline conditions. The adsorption mechanism described that the rhodamine B and methylene blue removal occurred endothermically, was feasible, and adhered to the kinetics model of pseudo-second-order and Langmuir isotherm. It concluded that the modified Java Bentonite from multistep intercalation is affordable and effective as wastewater treatment.

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“…In designing a proper sorbent, broad spectrum activity, high surface area, and rapid rate of pollutant uptake are most desirable ( Pourhakkak et al, 2021 ). Specifically for sorption of organic pollutants, hydrophobicity is a common driver of pollutant uptake in traditional sorbents such as granular or powdered activated carbon (GAC and PAC, respectively) ( Dias et al, 2007 ).…”

Section: Applications Of Electrospun Nanofibers Relevant For Pou/poe ...mentioning

confidence: 99%