Sorption of pharmaceutical compounds and nutrients by various porous low cost adsorbents

Rajendran, Karthik; Philip, Ligy

doi:10.1016/j.jece.2020.104916

Cited by 34 publications

(17 citation statements)

References 60 publications

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“…The presence of a basic group result in a positive charge on the OAC surface (Abbasi et al., 2022; Altalhi et al., 2022). When the pH of a solution (pHsolution) is pH pzc , the surface charge of the adsorbent is positive due to acidic group protonation, and DCF sorption is impeded due to electrostatic repulsion between functional groups and metal ions (Bahashi & Bi, 2022; Fu et al., 2021; Manthiram Karthik & Philip, 2021; Wang et al., 2020). As a result, it is advantageous to adsorb cation ions in water, and the OH– concentration and pH value of the final equilibrium solution rise, or Calcite (CaCO 3 ) in biochar may occur (Hopkins et al., 2022; Ou et al., 2023; Zhao et al., 2023).…”

Section: Resultsmentioning

confidence: 99%

Effect of oxidated golden shower on the adsorption of diclofenac sodium in wastewater

Arliyani,

Syaifuddin,

Ni'am

et al. 2023

Environmental Quality Mgmt

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This research aimed to modify activated carbon into oxidated activated carbon because it can effectively remove diclofenac sodium (DCF) and increase the adsorption capability. In this study of the several variations of initial concentration and contact time, those variations affected the optimal result. To determine, the removal efficiency of diclofenac sodium used Golden Shower Activated Carbon based on the contact time variation and the optimum contact time compared to Golden Shower Oxidated Activated Carbon as adsorbent on the batch method and to know the isotherm model and the kinetic model of the adsorbent on the adsorption in diclofenac sodium solution. The pHPZC for GSHAC and GSHOAC were 2.4 and 9.3. The optimum contact time for GSHAC was 225 min with the capacity (qt = 184.71 mg/g). The optimum contact time for GSHOAC was 169 min with the capacity (qt = 188.34 mg/g). The Isotherm model, kinetics model, and the physical characterization of the biosorbent were thoroughly investigated. The isotherm model chosen in the adsorption process for GSHAC and GSHOAC was the Langmuir model (R2 = 0.985 and R2 = 0.973). The pseudo‐second‐order for GSHAC and GSHOAC was confirmed to be a kinetic pseudo‐second‐order model of the adsorption with R2 values of 0.9566 and 0.9986. The model represents that the reaction from the adsorbent to the solution was double the initial concentration. Based on SEM analysis after the adsorption process, it was found that flakes of adsorbent before adsorption had many layers of pores, causing an irregular texture after adsorption showed that GSHAC and GSHOAC were fragmented and had many layers of pores that were closed and tight because it adsorbed DCF.

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Section: Resultsmentioning

confidence: 99%

Effect of oxidated golden shower on the adsorption of diclofenac sodium in wastewater

Arliyani,

Syaifuddin,

Ni'am

et al. 2023

Environmental Quality Mgmt

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“…Lightly expanded clay aggregate (LECA) is a novel substrate that contains alkaline oxides and carbonates. It has good P removal activity, conductivity, and high mechanical strength; can provide improved plant rooting and biofilm growth support [54]; and through its use pharmaceutically active chemicals (carbamazepine, diclofenac, and ibuprofen) and nutrients are efficiently removed from hospital effluent [55]. A consensus has been reached regarding the characteristics of the sustainable development of CW systems; one such characteristic is the availability of a broad selection of substrates-based on the concept of waste utilization-with which to select some of the so-called waste materials.…”

Section: Substratesmentioning

confidence: 99%

Towards Effective, Sustainable Solution for Hospital Wastewater Treatment to Cope with the Post-Pandemic Era

Liu

Zhao

Cai

et al. 2023

IJERPH

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Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has spread across the globe since the end of 2019, posing significant challenges for global medical facilities and human health. Treatment of hospital wastewater is vitally important under this special circumstance. However, there is a shortage of studies on the sustainable wastewater treatment processes utilized by hospitals. Based on a review of the research trends regarding hospital wastewater treatment in the past three years of the COVID-19 outbreak, this review overviews the existing hospital wastewater treatment processes. It is clear that activated sludge processes (ASPs) and the use of membrane bioreactors (MBRs) are the major and effective treatment techniques applied to hospital wastewater. Advanced technology (such as Fenton oxidation, electrocoagulation, etc.) has also achieved good results, but the use of such technology remains small scale for the moment and poses some side effects, including increased cost. More interestingly, this review reveals the increased use of constructed wetlands (CWs) as an eco-solution for hospital wastewater treatment and then focuses in slightly more detail on examining the roles and mechanisms of CWs’ components with respect to purifying hospital wastewater and compares their removal efficiency with other treatment processes. It is believed that a multi-stage CW system with various intensifications or CWs incorporated with other treatment processes constitute an effective, sustainable solution for hospital wastewater treatment in order to cope with the post-pandemic era.

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“…Moreover, the monolayer structure is not the same on all the surfaces especially when N 2 isotherms are used. Additionally, according to the International Union of Pure and Applied Chemistry (IUPAC), wood charcoal exhibits type 1 N 2 adsorption isotherm and H 4 hysteresis loop representing narrow slit pores in the microspores region (Average pore radius < 50 Å) [190]. Based on the BET theory that significant overlap between monolayer and multilayer coverage would undermine the assumption that adsorption occurs via formation of multilayer [191].…”

Section: Adsorption Isothermmentioning

confidence: 99%

Soil Nitrogen Sorption Using Charcoal and Wood Ash

et al. 2021

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This paper reviews the use of charcoal and wood ash in acid soils as adsorbents to improve N availability at the same time improving their soil fertility and crop productivity. Soil acidification poses a major challenge in agricultural sustainability and it is serious in highly weathered soils such as Ultisols and Oxisols which are noted for nutrient deficiency and Al and Fe ions toxicities. Understanding sorption mechanisms and isotherms is important for the improvement of soil N availability particularly inorganic N. However, understanding the sorption mechanisms in relation to charcoal and wood ash as absorbents in the literature is difficult because the soil amendments vary depending on their raw materials or sources of origin. Therefore, one of the objectives of this review is to provide recent research findings and theory development on the role of charcoal and wood ash in agriculture. Furthermore, this review focuses on how charcoal and wood ash improve N availability through physical, chemical and biological processes in mineral acidic soils. Balanced application and good understanding of the role of charcoal and wood ash as soil amendments have potential benefits to improve N availability and crop productivity.

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Sorption of pharmaceutical compounds and nutrients by various porous low cost adsorbents

Cited by 34 publications

References 60 publications

Effect of oxidated golden shower on the adsorption of diclofenac sodium in wastewater

Effect of oxidated golden shower on the adsorption of diclofenac sodium in wastewater

Towards Effective, Sustainable Solution for Hospital Wastewater Treatment to Cope with the Post-Pandemic Era

Soil Nitrogen Sorption Using Charcoal and Wood Ash

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