Department of Environmental Engineering, University of Warmia and Mazury in Olsztyn, ul. Warszawska 117a, 10-957, Olsztyn, Poland.
Department of Horticulture, University of Warmia and Mazury in Olsztyn, ul. Prawocheńskiego 21, 10-957, Olsztyn, Poland.
Environ Sci Pollut Res Int. 2018 Jul;25(19):18484-18497. doi: 10.1007/s11356-018-2078-z. Epub 2018 Apr 26.
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 621.1 mg/L, P-PO 60.8 mg/L, SO 605.0 mg/L, Cl 0.9 mg/L, Ca 545.0 mg/L, Mg 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 and 76.7% of N-NO from GW, whereas CHs to remove 92.8% of P-PO and 53.2% of N-NO.
在这项研究中，我们使用非交联壳聚糖 (CHs) 和与表氯醇交联的壳聚糖 (CHs-ECH) 形式的水凝胶珠来确定从温室废水中（GW）去除营养物质（硝酸盐和正磷酸盐）的效果。研究中使用的 GW 参数如下：N-NO 621.1mg/L，P-PO 60.8mg/L，SO 605.0mg/L，Cl 0.9mg/L，Ca 545.0mg/L，Mg 178.0mg/L，K 482.0mg/L，硬度 113°dH，pH 值 6.2。研究范围包括确定 pH 值对废水成分和养分吸附效果的影响、分析养分吸附动力学以及分析吸附剂剂量对 GW 中养分去除率的影响。CHs-ECH 能够从 GW 中吸附 79.4%的 P-PO 和 76.7%的 N-NO，而 CHs 能够去除 92.8%的 P-PO 和 53.2%的 N-NO。
