Smart Organic–Inorganic Polyoxomolybdates in Forward Osmosis for Antiviral-Drug Wastewater Treatment and Drug Reclamation

Zou, Yiting; Ge, Qingchun

doi:10.1021/acs.est.3c00084

Cited by 5 publications

(1 citation statement)

References 60 publications

(79 reference statements)

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“…Forward osmosis (FO) can provide an interesting solution both to integrate halophyte cultivation and to help manage wastewater. FO can be used to recover and reuse water from an effluent stream provided a suitable draw solution is available. − Seawater has already been used as a draw solution to recover wastewater and reduce energy consumption in hybrid FO–RO seawater desalination. ,,− In comparison to seawater, however, brackish groundwater is typically too dilute for direct use as a FO draw solution. Nonetheless, brackish groundwater becomes suitably concentrated as brine after RO.…”

Section: Introductionmentioning

confidence: 99%

Desalination, Water Re-use, and Halophyte Cultivation in Salinized Regions: A Highly Productive Groundwater Treatment System

Park

Mudgal

et al. 2023

Environ. Sci. Technol.

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Groundwater salinization is a problem affecting access to water in many world regions. Though desalination by conventional reverse osmosis (RO) can upgrade groundwater quality for drinking, its disadvantages include unmanaged brine discharge and accelerated groundwater depletion. Here, we propose a new approach combining RO, forward osmosis (FO), and halophyte cultivation, in which FO optimally adjusts the concentration of the RO reject brine for irrigation of Salicornia or Sarcocornia. The FO also reuses wastewater, thus, reducing groundwater extraction and the wastewater effluent volume. To suit different groundwater salinities in the range 1−8 g/L, three practical designs are proposed and analyzed. Results include specific groundwater consumption (SGC), specific energy consumption (SEC), wastewater volume reduction, peak RO pressure, permeate water quality, efficiency of water resource utilization, and halophyte yield. Compared to conventional brackish water RO, the results show superior performance in almost all aspects. For example, SGC is reduced from 1.25 to 0.9 m 3 per m 3 of drinking water output and SEC is reduced from 0.79 to 0.70 kW h/m 3 by a FO−RO−FO system treating groundwater of salinity 8 g/L. This system can produce 1.1 m 3 of high-quality drinking water and up to 4.9 kg of edible halophyte per m 3 of groundwater withdrawn.

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