Hydrogel chitosan sorbent application for nutrient removal from soilless plant cultivation wastewater

In this study, we determined the effectiveness of removal of nutrients (nitrates and orthophosphates) from greenhouse wastewaters (GW) using non-cross-linked chitosan (CHs) and chitosan cross-linked with epichlorohydrin (CHs-ECH) in the form of hydrogel beads. GW used in the study had the following...

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Bibliographic Details
Published in:Environmental science and pollution research international 2018-07, Vol.25 (19), p.18484-18497
Main Authors: Jóźwiak, Tomasz, Mielcarek, Artur, Janczukowicz, Wojciech, Rodziewicz, Joanna, Majkowska-Gadomska, Joanna, Chojnowska, Magdalena
Format: Article
Language:English
Subjects:
Adsorption
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Beads
Calcium
Calcium ions
Chitosan
Chitosan - chemistry
Composition effects
Crosslinking
Cultivation
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental science
Epichlorohydrin
Epichlorohydrin - chemistry
Greenhouse effect
Greenhouses
Hydrogels
Hydrogels - chemistry
Hydrogen-Ion Concentration
Kinetics
Magnesium
Nitrates
Nitrates - analysis
Nutrient removal
Nutrients
Orthophosphates
pH effects
Phosphates - analysis
Research Article
Sorption
Waste Water - chemistry
Waste Water Technology
Wastewater
Wastewater composition
Wastewater treatment
Water Management
Water Pollution Control
Water Purification - methods
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Summary:In this study, we determined the effectiveness of removal of nutrients (nitrates and orthophosphates) from greenhouse wastewaters (GW) using non-cross-linked chitosan (CHs) and chitosan cross-linked with epichlorohydrin (CHs-ECH) in the form of hydrogel beads. GW used in the study had the following parameters: N-NO 3 621.1 mg/L, P-PO 4 60.8 mg/L, SO 4 2− 605.0 mg/L, Cl − 0.9 mg/L, Ca 2+ 545.0 mg/L, Mg 2+ 178.0 mg/L, K + 482.0 mg/L, hardness 113° dH, and pH 6.2. The scope of the study included determination of the effect of pH on wastewater composition and effectiveness of nutrient sorption, analyses of nutrient sorption kinetics, and analyses of the effect of sorbent dose on percentage removal of nutrients from GW. CHs-ECH was able to sorb 79.4% of P-PO 4 and 76.7% of N-NO 3 from GW, whereas CHs to remove 92.8% of P-PO 4 and 53.2% of N-NO 3 .
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-018-2078-z