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https://hdl.handle.net/20.500.13091/5230
Title: | A holistic approach to the recovery of valuable substances from the treatment sludge formed from chemical precipitation of fruit processing industry wastewater | Authors: | Güven, H.M. Ateş, H. |
Keywords: | Bioactive compounds Chemical precipitation conditions Fruit juice industry wastewater Recovery Soxhlet extraction Supercritical CO2 extraction Ultrasound assisted extraction Valorization Carbon dioxide Citrus fruits Coagulation Efficiency Extraction Fruit juices Hydrated lime Iron compounds pH Precipitation (chemical) Ultrasonics Unmanned aerial vehicles (UAV) Wastewater treatment Bioactive compounds Chemical precipitation Chemical precipitation condition Condition Fruit juice industry wastewater Soxhlet extraction Supercritical CO 2 Supercritical CO2 extraction Ultrasound-assisted extraction Valorisation Recovery calcium hydroxide ferric chloride phenol derivative polyelectrolyte aluminum oxide carbon dioxide chloride ferric ion Perlite plant extract silicon dioxide extraction method food industry fruit holistic approach phenol precipitation (chemistry) recovery sludge wastewater treatment Article chemical oxygen demand controlled study desorption flocculation fruit waste high performance liquid chromatography pH precipitation response surface method sludge treatment Soxhlet extraction supercritical fluid extraction ultrasound assisted extraction valorization wastewater chemistry fruit precipitation procedures sewage Aluminum Oxide Carbon Dioxide Chemical Precipitation Chlorides Ferric Compounds Flocculation Fruit Plant Extracts Polyelectrolytes Sewage Silicon Dioxide Waste Disposal, Fluid Wastewater |
Publisher: | Elsevier B.V. | Abstract: | In this study, recovery of phenolic substances with Soxhlet extraction, (SE) ultrasound-assisted extraction (UAS), and supercritical CO2 (SC-CO2) extraction methods from chemical sludge obtained with chemical precipitation (FeCl3/PACS, Ca(OH)2/PACS, perlite/PACS, FeCl3/cationic polyelectrolyte) of lemon processing wastewater was investigated. The effect of used coagulants/flocculants and pH on COD and total phenolic substance content (TPC) removal was researched. Recovered phenolic substance profiles were also determined with HPLC-DAD. Additionally, response surface methodology was used to determine optimum treatment conditions. ANOVA analysis showed that pH is a more important variable than coagulant/flocculant doses for all chemical precipitation experimental sets. The highest removal efficiencies for COD and TPC was obtained in FeCl3/PACS (COD: 72.0 %, TPC: 93.7 %). Optimum dose values were determined as pH: 4, FeCl3: 3000 mg/L, PACS: 400 mg/L for FeCl3/PACS, pH: 6.5, Ca(OH)2: 1500 mg/L, PACS: 300 mg/L for Ca(OH)2/PACS, pH: 5.5, PACS: 7000 mg/L, perlite: 50 g/L for perlite/PACS, pH: 4.5, FeCl3: 500 mg/L, polyelectrolyte: 4 mg/L for FeCl3/polyelectrolyte. TPC removal efficiencies were determined as 55 %, 35 %, 57 % and 58 % in these conditions, respectively. Maximum TPC in extracts was determined as 39.03 mg GAE/g extract, 8.81 mg GAE/g extract, and 4.34 mg GAE/g extract for SE, UAS, and SC-CO2, respectively. TPC recovery efficiencies (RTPC) for all chemical sludge were SE > UAS > SC-CO2. Additionally, the TPC profile has shown a difference depending on the extraction method. According to the results of this study, it was concluded that the coagulation-flocculation process may be a suitable alternative for fruit juice processing industry wastewater in terms of both reducing environmental pollution and recovering polyphenolics from formed sludge. Consequently, this study presented a different perspective on the recovery from wastes with valuable substance recovery from chemical sludge. © 2024 Elsevier B.V. | URI: | https://doi.org/10.1016/j.scitotenv.2024.170372 https://hdl.handle.net/20.500.13091/5230 |
ISSN: | 0048-9697 |
Appears in Collections: | PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collections Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections |
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