Synthesis, structural, magnetic property, and Cd(II) adsorption behavior of Ca-substituted MgFeO nanomaterials in aqueous solutions.

In the present study, magnetic nanomaterials (MgCaFeO, 0.0 ≤ x ≤ 0.8) were prepared via a simple sol-gel method.

Effectiveness of different CuO morphologies nanomaterials on the permeability, antifouling, and mechanical properties of PVDF/PVP/CuO ultrafiltration membrane for water treatment.

The hydrophobic nature of Poly (vinylidene fluoride) (PVDF) is a significant barrier to use in ultrafiltration, resulting in fouling, flux decline, and reduced lifespan in water treatment. This study examines the effectiveness of different morphologies of CuO nanomaterials (NMs) (spherical, rod, plate, and flower), synthesized by the facile hydrothermal method, to modify PVDF membrane with PVP additive for improving the performance of water permeability and antifouling. Such membrane configurations with different morphologies of CuO NMs improved hydrophilicity with a maximum water flux of 222-263 L mh compared to 195 L mh for the bare membrane and exhibited excellent thermal and mechanical strengths.

Effectiveness of phase- and morphology-controlled MnO nanomaterials derived from flower-like δ-MnO as alternative cathode catalyst in microbial fuel cells.

Crystal phase and morphology variations obtained by simple high-temperature annealing offer promising strategies for employing nanostructured manganese oxide as a cathode catalyst for microbial fuel cells (MFCs). This study examines the effectiveness of simultaneous-phase and morphology-controlled manganese dioxide nanomaterials, designed by annealing a hydrothermally synthesized flower-like δ-manganese dioxide precursor at 300-800 °C, as cathode catalysts for MFCs. MFCs with the best-performing catalyst cathode (at a reasonable mass loading) were also analyzed through cyclic voltammetry and electrochemical impedance spectroscopy.

Constructed wetlands as sustainable ecotechnologies in decentralization practices: a review.

Recently, a range of novel and cost-effective engineered wetland technologies for decentralization practices of domestic wastewater treatment have been developed with ecological process modification, the use of functionalized plants, and advanced biofilm formation. However, selecting the one that can be more appreciated for on-site sanitation is still uncertain. This paper reviews the role of plants, media materials, microorganisms, and oxygen transfer in domestic wastewater purification through constructed wetlands (CWs).

Wastewater treatment using integrated anaerobic baffled reactor and Bio-rack wetland planted with Phragmites sp. and Typha sp.

The purpose of this study is to examine the potential use of anaerobic baffled reactor (ABR) followed by Bio-rack wetland planted with Phragmites sp. and Typha sp. for treating domestic wastewater generated by small communities (751 mg COD/L, 500 SCOD mg/L, 348 mg BOD5/L).

Performance of high-rate constructed phytoremediation process with attached growth for domestic wastewater treatment: effect of high TDS and Cu.

Domestic wastewater treatment under specific influent conditions seriously stressed with total dissolved solids (TDS) and copper (Cu) metal was examined by a laboratory-scale model of the phytoremediation process with the attached growth system using Typha sp. As compared with conventional wetland systems, the process showed more stability and improved performance (88 ± 1.1% BOD5, 73 ± 1.

Evaluation of different wastewater treatment processes and development of a modified attached growth bioreactor as a decentralized approach for small communities.

This study was undertaken to evaluate the potential future use of three biological processes in order to designate the most desired solution for on-site treatment of wastewater from residential complexes, that is, conventional activated sludge process (CASP), moving-bed biofilm reactor (MBBR), and packed-bed biofilm reactor (PBBR). Hydraulic retention time (HRT) of 6, 3, and 2 h can be achieved in CASP, MBBR, and PBBR, respectively. The PBBR dealt with a particular arrangement to prevent the restriction of oxygen transfer efficiency into the thick biofilms.

Application of patent bio-rack wetland system using Phragmites sp. for domestic wastewater treatment in the presence of high total dissolved solids (TDS) and heavy metal salts.

The quality of water recourses is degrading due to improper wastewater management. The aim of this study is to examine the potential of bio-rack system for treatment of domestic wastewater in the presence of high total dissolved solids (TDS) and heavy metal salts. The bio-rack is a modified wetland system incorporated with the advantages of phytoremediation and attached growth microbial process.

Phytoremediation of domestic wastewater using Eichhornia crassipes.

Safe, economic and effective treatment of domestic wastewater is the biggest challenge the world experienced in modern times. Phytoremediation studies were undertaken in a laboratory scale using shallow pond water hyacinth (Echhornia crassipes) system and analytical data was collected before and after treatment. The studies also include microbial flora present in the system by isolating and identifying the microorganisms.