Enhanced performance of Lagerstroemia speciosa seed biochar and polypyrrole composite for the sequestration of emerging contaminant from wastewater sample: Case study of ofloxacin drug

Journal of Water Process Engineering, Год журнала: 2024, Номер 64, С. 105699 - 105699

Опубликована: Июнь 28, 2024

Язык: Английский

---

Treatment of aqueous per- and poly-fluoroalkyl substances: A review of biochar adsorbent preparation methods

Chemosphere, Год журнала: 2024, Номер 357, С. 142088 - 142088

Опубликована: Апрель 20, 2024

Per- and poly-fluoroalkyl substances (PFAS) are synthetic chemicals widely used in everyday products, causing elevated concentrations drinking water posing a global challenge. While adsorption methods commonly employed for PFAS removal, the substantial cost environmental footprint of commercial adsorbents highlight need more cost-effective alternatives. Additionally, existing exhibit limited effectiveness, particularly against diverse types, such as short-chain PFAS, necessitating modifications to enhance capacity. Biochar can be considered eco-friendly alternative conventional adsorbents. With abundant feedstocks favorable physicochemical properties, biochar shows significant potential applied an adsorbent removing contaminants from water. Despite its effectiveness adsorbing different inorganic organic environments, some factors restrict effective application adsorption. These related characteristics well chemistry. Therefore, have been introduced overcome these limitations improve biochar's This review explores preparation conditions, including pyrolysis process, activation, modification techniques capacity types PFAS. It addresses critical questions about performance composites, mechanisms governing adsorption, challenges, future perspectives this field. The surge research on indicates growing interest, making timely valuable resource in-depth exploration remediation.

Язык: Английский

---

Self-grown photocatalytic metal-organic frameworks on electrocatalytic NiFe layered double hydroxides as bifunctional photoelectrocatalyst for efficient overall water splitting

Journal of Power Sources, Год журнала: 2025, Номер 633, С. 236398 - 236398

Опубликована: Фев. 4, 2025

Язык: Английский

---

Bamboo-Derived Low-Cost Mesoporous Biochar for Efficient Removal of Per- and Polyfluoroalkyl Substances from Contaminated Water

ACS ES&T Water, Год журнала: 2024, Номер 4(6), С. 2711 - 2720

Опубликована: Май 30, 2024

Adsorption by activated carbon (AC) is a practical approach to removing per- and polyfluoroalkyl substances (PFAS) from water, but designing highly efficient for the adsorption of target PFAS using low-cost strategy remains challenge. Herein, we report that bamboo-biochar prepared vacuum carbonization steam activation serves as an alternative adsorbent commercial AC removal. The optimal biochar (V500A) exhibited capacity 1.23 0.77 mmol/g perfluorooctanesulfonate 6:2 fluorotelomer sulfonate (6:2 FTS), respectively, which outperforms previously reported biochar, rate was 2.4 times higher than F400. An excellent performance V500A in electroplating wastewater drinking water demonstrates its versatile applicability. Pore reaming played major role enhancement, hydrophobic electrostatic interactions were mainly responsible adsorption. In addition, pyrolysis regeneration at mild temperature (500 °C) can effectively reactivate spent biochar. results this study are expected provide feasible pore-designing achieving preparation cost-effective biochar-based adsorbents removal contaminated water.

Язык: Английский

---

Engineered biochar for in-situ and ex-situ remediation of contaminants from soil and water

The Science of The Total Environment, Год журнала: 2024, Номер 957, С. 177384 - 177384

Опубликована: Ноя. 20, 2024

Язык: Английский

---

Regeneration of biochars (pristine and modified/engineered) and economic analysis of their use in the removal of per- and polyfluoroalkyl substances (PFAS) from water/wastewater

Frontiers of Environmental Science & Engineering, Год журнала: 2024, Номер 19(2)

Опубликована: Ноя. 23, 2024

Язык: Английский

---

Removal of per- and polyfluoroalkyl substances in environmental matrices by biochars: mechanisms, fate, and research needs

Elsevier eBooks, Год журнала: 2025, Номер unknown, С. 215 - 240

Опубликована: Янв. 1, 2025

Язык: Английский

---

A comprehensive overview on the occurrence and removal of per- and polyfluoroalkyl substances through adsorption and biodegradation

Bioresource Technology Reports, Год журнала: 2025, Номер unknown, С. 102077 - 102077

Опубликована: Фев. 1, 2025

Язык: Английский

---

Alkylamine-Modified Dialdehyde Cellulose Nanofibers for PFAS Adsorption

ACS ES&T Water, Год журнала: 2025, Номер unknown

Опубликована: Март 11, 2025

Язык: Английский

---

Efficient adsorptive removal of perfluorooctanoic acid by large surface area biochar modified with KHCO₃

Water Emerging Contaminants & Nanoplastics, Год журнала: 2025, Номер 4(1)

Опубликована: Март 24, 2025

Biochar is a promising adsorbent for remediating perfluorooctanoic acid (PFOA) in contaminated water. However, the performance of pristine biochar limited. Considering pore filling crucial mechanism PFOA adsorption on biochar, this study investigated impact KHCO3 modification structure and its capacity PFOA. The characterization experiment results revealed that both specific surface area (SSA) biochars were positively correlated with pyrolysis temperature, modified corn stalks prepared at 800 °C (CBC-800) exhibited noticeable SSA (1,471.6 m2/g) (514.8 mg/g), which 3.6 37.1 times higher, respectively, compared to stalk (404.1 m2/g 13.9 mg/g). kinetics isotherm data followed pseudo-second-order Freundlich model, indicating chemisorption was main factor limiting rate. Thermodynamics demonstrated process physical, spontaneous, exothermic. porous performed superior capacities under various environmental conditions (pH, inorganic salts, etc. ). removal rate CBC-800 low concentrations (10-1,000 μg/g) ranged from 87.4% 99.6%, initial concentrations. Additionally, effectively removed (40 μg/L) through six consecutive cycles (93.4%-94.5%). Mechanism analysis indicated dominant greatly enhanced, while hydrogen bonding, electrostatic, hydrophobic interactions also involved. Our derived low-cost agricultural forestry residues combining has great potential adsorptive emerging PFAS

Язык: Английский

---