A sustainable solution for aquaculture wastewater treatment: Evaluation of tannin-based and conventional coagulants

Chemosphere, Journal Year: 2025, Volume and Issue: 377, P. 144320 - 144320

Published: March 17, 2025

The global population faces increasing challenges in securing fresh water and food production. Aquaculture, a key source for obtaining protein, contributes significantly to environmental pollution, releasing suspended solids, organic matter, nitrogen, phosphorus into bodies. Some wastewater treatment methods can be expensive due high equipment, energy, reagents, maintenance costs, prompting the search more sustainable alternatives. This study evaluates performance of tannin-based coagulants from Castanea sativa shells (CS) treating recirculating an aquaculture plant. Two coagulants, C1 C2, were produced using ethanolamine (ETA) NH4Cl, respectively. efficiency removing color, turbidity, was compared commercial coagulant (Tanfloc SG) chemical ones (FeCl3 Al2(SO4)3). Coagulant at 10 mg L-1, removed 90 % turbidity 32 phosphorus, outperforming Al-based (20 L-1). Moreover, CS-based reduced natural matter (NOM), expressed as UV absorbance 254 nm, dissolved carbon (DOC), though none nitrogen levels. Toxicity tests indicated low bacterial inhibition, with C2 showing inhibition rates 8-10 %. sludge rich calcium (97-1500 g-1), magnesium (408-638 potassium (347-894 making it suitable soil conditioner, further research is necessary. Tannin-based particularly chestnut shells, offer promising, solution post-treatment effluent aquaponics system on fish farm while reducing

Language: Английский

Tertiary nanocomposites of polyaniline/graphene/Ta2C MXene: High-performance free-standing EMI shields

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 106680 - 106680

Published: May 1, 2025

Language: Английский

Advances in Nanocomposites: Preparation, Characterization, Properties, and Applications

Molecules, Journal Year: 2024, Volume and Issue: 29(24), P. 5924 - 5924

Published: Dec. 16, 2024

Nanocomposites are a class of nanomaterials wherein one or more phases, nano-sized dimension (zero dimensions, dimension, and two dimensions), embedded in ceramic, metal, polymer materials, etc [...]

Language: Английский