Lesley Joseph, PhD, PE

This journal article provides a comprehensive assessment of recent studies on the removal of various CECs (e.g., analgesics, antibiotics, antiepileptics, antiseptics, and etc.) with different physicochemical properties by various MOF-NAs under various water quality conditions (e.g., pH, background ions/ionic strength, natural organic matter, and temperature). In addition, this article briefly discusses the recent literature on the synthesis of MOF-NAs, regeneration of MOF-NAs, and removal of… Show more

This journal article provides a comprehensive assessment of recent studies on the removal of various CECs (e.g., analgesics, antibiotics, antiepileptics, antiseptics, and etc.) with different physicochemical properties by various MOF-NAs under various water quality conditions (e.g., pH, background ions/ionic strength, natural organic matter, and temperature). In addition, this article briefly discusses the recent literature on the synthesis of MOF-NAs, regeneration of MOF-NAs, and removal of CECs during water and wastewater treatment processes. Show less

In this study, combined coagulation–adsorption treatment using single-walled carbon nanotubes (SWCNTs), multiwalled carbon nanotubes (MWCNTs), and powdered activated carbon (PAC) was employed for the removal of endocrine disrupting chemicals (EDCs) from various water sources. Bisphenol A (BPA) and 17α-ethinyl estradiol (EE2) were the target EDCs used in this study. Natural surface water (BRW) was obtained from Broad River in Columbia, South Carolina. Synthetic seawater (SW) and brackish water… Show more

In this study, combined coagulation–adsorption treatment using single-walled carbon nanotubes (SWCNTs), multiwalled carbon nanotubes (MWCNTs), and powdered activated carbon (PAC) was employed for the removal of endocrine disrupting chemicals (EDCs) from various water sources. Bisphenol A (BPA) and 17α-ethinyl estradiol (EE2) were the target EDCs used in this study. Natural surface water (BRW) was obtained from Broad River in Columbia, South Carolina. Synthetic seawater (SW) and brackish water (BW) were produced to reflect the typical composition observed in previously published literature. Synthetic landfill leachates were created to replicate the characteristics of leachate produced in young landfills (YLs) and old landfills (OLs). Show less

In this study, combined coagulation–adsorption treatment using single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) was employed for the removal of natural organic matter (NOM) from various water sources; powdered activated carbon (PAC) was used for comparison. Synthetic seawater and brackish water were produced, with humic acid as the source of NOM. Natural surface water was obtained from Broad River in Columbia, South Carolina. Synthetic landfill leachates were… Show more

In this study, combined coagulation–adsorption treatment using single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) was employed for the removal of natural organic matter (NOM) from various water sources; powdered activated carbon (PAC) was used for comparison. Synthetic seawater and brackish water were produced, with humic acid as the source of NOM. Natural surface water was obtained from Broad River in Columbia, South Carolina. Synthetic landfill leachates were created to reflect the typical characteristics of leachate produced in young and old landfills. Glucose and humic acid were used as the NOM sources for the young and old leachates, respectively. Adsorption isotherm experiments were conducted to determine the adsorption capacity of each carbon nanomaterial, and jar testing was conducted to simulate the combined coagulation–adsorption treatment processes. Show less

In this study, the adsorption of bisphenol A (BPA) and 17α-ethinyl estradiol (EE2) by single walled carbon nanotubes (SWCNTs) was investigated. Solutions of artificial seawater, brackish water, and a combination of these two waters were prepared, in accordance with previously published composition data.

In this study, the adsorption of bisphenol A (BPA) and 17α-ethinyl estradiol (EE2) from landfill leachate onto single-walled carbon nanotubes (SWCNTs) was investigated. Different leachate solutions were prepared by altering the pH, ionic strength, and dissolved organic carbon (DOC) in the solutions to mimic the varying water conditions that occur in leachate during the various stages of waste decomposition. The youngest and oldest leachate solutions contained varying DOC and background… Show more

In this study, the adsorption of bisphenol A (BPA) and 17α-ethinyl estradiol (EE2) from landfill leachate onto single-walled carbon nanotubes (SWCNTs) was investigated. Different leachate solutions were prepared by altering the pH, ionic strength, and dissolved organic carbon (DOC) in the solutions to mimic the varying water conditions that occur in leachate during the various stages of waste decomposition. The youngest and oldest leachate solutions contained varying DOC and background chemistry and were represented by leachate Type A (pH = 5.0; DOC = 2500 mg/L; conductivity = 12,500 μS/cm; [Ca2+] = 1200 mg/L; [Mg2+] = 470 mg/L) and Type E (pH = 7.5; DOC = 250 mg/L; conductivity = 3250 μS/cm; [Ca2+] = 60 mg/L; [Mg2+] = 180 mg/L). Show less

One of the main problems for seawater reverse osmosis desalination is membrane fouling associated with natural organic matter. Bisphenol-A (BPA) and 17alpha-ethinylestradiol (EE2) are well-known endocrine-disrupting compounds that have been detected in wastewater and seawater. In this study, the contribution of carbon nanotubes (CNTs, single-walled carbon nanotubes) to membrane fouling control and the potential adsorption mechanisms of BPA and EE2 were investigated using artificial seawater… Show more

One of the main problems for seawater reverse osmosis desalination is membrane fouling associated with natural organic matter. Bisphenol-A (BPA) and 17alpha-ethinylestradiol (EE2) are well-known endocrine-disrupting compounds that have been detected in wastewater and seawater. In this study, the contribution of carbon nanotubes (CNTs, single-walled carbon nanotubes) to membrane fouling control and the potential adsorption mechanisms of BPA and EE2 were investigated using artificial seawater (ASW) in a bench scale ultrafiltration (UF) membrane coupled with CNTs. Show less