Lanthanum Hydroxide-Modified Zeolite as Adsorbents for Efficient Ammonia Nitrogen and Phosphate Removal and its Application in Sludge Fermentation Liquid

Опубликована: Янв. 1, 2025

Nitrogen (N) and phosphorus (P) from sludge fermentation liquid (SFL) is simultaneously recovered by La-modified zeolite (LMZ) prepared modifying with lanthanum hydroxide (La(OH)3). The results showed that LMZ could selectively adsorb ammonium phosphate SFL, leaving short chain fatty acids (SCFAs) in the SFL. Modification increased specific surface area of 35.25%. Langmuir model fitting maximum adsorption capacities for were 24.77 mg/g 9.14 mg/g, 7 times 75 higher than those natural zeolite, respectively. Additionally, exhibited strong selectivity presence co-existing ions. Notably, after 6 cycles adsorption/desorption, still held 80 % its capacity as well 93 desorption efficiency, presenting excellent stability. XPS Zeta potential indicated inner sphere complex forming through ligand exchange between hydroxyl groups on La(OH)3 phosphate, electrostatic attraction La-OH2+ anions, main mechanisms adsorption. Adsorption SFL possessed simultaneous selective 75.11% 83.40% sorption This work indicates promising to remove SCFAs which great significance recovering N P improving quality carbon sources biological removal processes.

Язык: Английский

---

Assessment of the Hydrogen Production Potential in a Zeolite Assisted Two-Phase Dark and Photo-Fermentation Process from Urban Waste Mixture

Resources, Год журнала: 2025, Номер 14(3), С. 43 - 43

Опубликована: Март 6, 2025

Waste-based sustainable solutions proposed by scientific and industrial communities for energy production are an approach that can respond to the growing concerns regarding climate change fossil resources depletion. This study investigates a two-phase bioprocess combining dark fermentation (DF) photo-fermentation (PF) enhance hydrogen yield while anaerobically treating urban organic food waste sewage sludge. A key objective was assess effect of composition temperature on accumulation, with particular attention product role zeolite in improving process efficiency. In DF stage, addition significantly enhanced increasing microbial activity substrate bioavailability. As result, increased up 27.3 mmol H2/(L d) under thermophilic conditions. After suspended solids were removed from broth, step driven pure strain Rhodopseudomonas palustris performed permanent IR light different substrate-to-inoculum [S/I] ratios. The maximum rate 9.33 d), when R. inoculated at lowest ratio (<20 COD/COD) 0.5 g VSS/L as initial concentration. condition led increase 35% compared values obtained alone.

Язык: Английский

---

Lanthanum hydroxide-modified zeolite as adsorbents for efficient ammonia nitrogen and phosphate removal and its application in sludge fermentation liquid

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116779 - 116779

Опубликована: Апрель 1, 2025

Язык: Английский

---

Feasibility and mechanism exploration of enhancing short chain fatty acid production assisted by nitrate photolysis during sludge fermentation

Chemical Engineering Journal, Год журнала: 2024, Номер 496, С. 154323 - 154323

Опубликована: Июль 27, 2024

Язык: Английский

---