Efficient adsorption removal of carbamazepine from water by dual-activator modified hydrochar

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 353, P. 128287 - 128287

Published: June 18, 2024

Language: Английский

---

Activation of peroxymonosulfate by Fe,N co-doped walnut shell biochar for the degradation of sulfamethoxazole: Performance and mechanisms

Environmental Pollution, Journal Year: 2024, Volume and Issue: 355, P. 124018 - 124018

Published: April 30, 2024

Fe and N co-doped walnut shell biochar (Fe,N-BC) was prepared through a one-pot pyrolysis procedure by using shells as feedstocks, melamine the source, iron(III) chloride source. Moreover, pristine (BC), nitrogen-doped (N-BC), α-Fe2O3-BC were synthesized controls. All materials characterized different techniques used for activation of peroxymonosulfate (PMS) degradation sulfamethoxazole (SMX). A very high rate SMX (10 mg/L) achieved with Fe,N-BC/PMS (0.5 min-1), which higher than those BC/PMS (0.026 N-BC/PMS (0.038 α-Fe2O3-BC/PMS (0.33 min-1) under same conditions. This is mainly due to formation Fe3C iron oxides, are reactive PMS. In next step, Fe,N-BC employed composite membrane structure liquid-induced phase inversion process. The ultrafiltration not only exhibited separation performance humic acid sodium salt (HA, 98%) but also improved self-cleaning properties when applied rhodamine B (RhB) filtration combined PMS solution cleaning procedure. Scavenging experiments revealed that 1O2 predominant species responsible SMX. transformation products possible pathways identified. Furthermore, toxicity assessment overall intermediate lower

Language: Английский

---

Recent Advances in Using Adsorbent Derived from Agricultural Waste for Antibiotics and Non-Steroidal Anti-Inflammatory Wastewater Treatment: A Review

Separations, Journal Year: 2023, Volume and Issue: 10(5), P. 300 - 300

Published: May 8, 2023

Antibiotics and non-steroidal anti-inflammatory drugs (NSAIDs) are among the top pharmaceutical contaminants that have been often found in aquatic environment. The presence of these environment is great concern since it has a negative impact on both ecology human health. In contrast to other tertiary treatments, adsorption stands out as viable treatment approach provides benefits such easier operating conditions with no byproduct formation. Commercial activated carbon widely researched adsorbent, but its large-scale applicability constrained by high cost. Agricultural waste also contains large amount various functional groups, which may be adapted surface modification increase ability. this regard, study designed review recent progress efficient adsorbents derived from agricultural wastes for removal antibiotics NSAIDs water bodies. Adsorbents made important over commercial reduction while controlling pollution.

Language: Английский

---

Alteration of Tecoma chip wood waste into microwave-irradiated activated carbon for amoxicillin removal: Optimization and batch studies

Arabian Journal of Chemistry, Journal Year: 2023, Volume and Issue: 16(10), P. 105110 - 105110

Published: June 28, 2023

Amoxicillin (AMOX) in wastewater can promote antibiotic resistance bacteria and affecting aquatic ecosystems, due to inadequate removal by conventional treatment plants. This study aimed (i) optimizing Tecoma chip wood based activated carbon (TCAC) adsorb amoxicillin using response surface methodology (RSM) (ii) evaluating AMOX adsorption through batch continuous modes. The RSM revealed the optimum conditions be 657 W, 20 min 0.99 g/g for radiation power, time impregnation ratio (IR), respectively. These resulted efficiency of 88.07 mg/g 27.68 % TCAC's yield. BET area total pore volume TCAC were 924.85 m2/g 0.3485 cm3/g was occupied with several functional groups namely primary amine, hydroxy, alkyl carbonate terminal alkyne. enhanced process forming hydrogen bond molecules. isotherm that AMOX-TCAC system obeyed Langmuir model maximum monolayer capacity, Qm is 357.14 mg/g. Pseudo-second order (PSO) fitted best kinetic studies. Boyd plot divulged rate limiting step film diffusion. Thermodynamic confirmed endothermic, spontaneous controlled physisorption. In bed column studies, percentage adsorbates found increase when flowrate decreased, initial concentration height increased. For breakthrough curve model, Yoon Nelson model. demonstrated its efficacy AMOX, proving successful both mode operations. findings suggest potential scaling up production industrial purposes, indicating suitability larger-scale applications.

Language: Английский

---

Naturally derived materials to enhance the membrane properties in (waste)water treatment applications - Mechanisms, scale-up challenges and economic considerations

Journal of Water Process Engineering, Journal Year: 2023, Volume and Issue: 57, P. 104647 - 104647

Published: Dec. 13, 2023

Language: Английский

---