Enhanced Transpiration by Attached Microalgae-Simulated Plants for Zero-Discharge of Reverse Osmosis Concentrated Water (WROC)
| Autor: | Huifang Yu, Qi Shi, Ting Yang, Lin-Lan Zhuang, Yanan Yang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Geography
Planning and Development chemistry.chemical_element Biomass 02 engineering and technology 010501 environmental sciences Aquatic Science 01 natural sciences Biochemistry reverse osmosis concentrated water treatment attached microalgae-simulated plant system zero-discharge of wastewater Reverse osmosis TD201-500 0105 earth and related environmental sciences Water Science and Technology Transpiration Pollutant Water supply for domestic and industrial purposes Phosphorus Humidity Hydraulic engineering 021001 nanoscience & nanotechnology Pulp and paper industry Dilution Wastewater chemistry Environmental science TC1-978 0210 nano-technology capillary force nitrogen and phosphorus transformation |
| Zdroj: | Water Volume 13 Issue 15 Water, Vol 13, Iss 2058, p 2058 (2021) |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w13152058 |
| Popis: | Inspired by plant transpiration, an attached microalgae−simulated plant system was designed to enhance the transpiration of reverse osmosis concentrated water (i.e., WROC) and realize the conversion of pollutants to microalgae biomass. The results showed that the production rate of clean water could reach as high as 14.84 L·m−2·day−1, which was significantly influenced by the humidity of the air and the growth status of the attached microalgae. Moreover, the enhancement of water evaporation by microalgae was more obvious under relatively low humidity. Pollutants, transported along with the water, could transform into microalgae biofilm or crystallize at the top of the microfiber. TN and TP transformation into biomass resources were maximized in 40% diluted WROC, with efficiencies of 60.91% and 38.49%, respectively. Of note, the accumulation of phosphorus in the micro-environment of attached microalgae may inhibit microalgal growth in the later stages of cultivation, owing to the relatively low movability. Hence, this system could be applied for high-efficiency wastewater purification, especially under high humidity. Wastewater dilution and periodic microalgae harvest could guarantee the attached microalgae growth and increase the pollutant-bioresource conversion rate. |
| Databáze: | OpenAIRE |
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