Zirconium hydroxide nanoparticle encapsulated magnetic biochar composite derived from rice residue: Application for As(III) and As(V) polluted water purification

: Harvesting solar energy for water treatments has been considered a promising solution for the global community. The shortage of water is a great challenge for scientists due to the increased demand of population. However, the low efficiency of absorber materials is an obstacle in practical applications. In addition, state-of-the-art conventional technologies require optical concentrators and multiple component-based systems, leading to lower efficiency and higher cost. In this review, a low-cost, more reliable, less energy-intensive, and more eco-friendly solar water purification system based on graphene-plasmonic hybrid nanocomposite has been demonstrated. Graphene-plasmonic-based hybrid nanocomposite has been utilized to achieve pure water from wastewater. Such hybrid nanocomposites have the ability to clean polluted water very efficiently due to their excellent properties such as higher surface area, low concentration, and working ability. Furthermore, the development of a solar water purification system has been achieved through optimized hybrid nanocomposites.

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TiO2-Based Photocatalytic Process for Purification of Polluted Water: Bridging Fundamentals to Applications

Journal of Nanomaterials ◽

10.1155/2013/319637 ◽

2013 ◽

Vol 2013 ◽

pp. 1-14 ◽

Cited By ~ 11

Author(s):

Chuan Wang ◽

Hong Liu ◽

Yanzhen Qu

Keyword(s):

Process Optimization ◽

Water Purification ◽

Large Scale ◽

Advanced Oxidation Process ◽

Advanced Oxidation ◽

Reactor Design ◽

Polluted Water ◽

The Real ◽

Advanced Oxidation Technology ◽

Oxidation Technology

Recent years have witnessed a rapid accumulation of investigations on TiO2-based photocatalysis, which poses as a greatly promising advanced oxidation technology for water purification. As the ability of this advanced oxidation process is well demonstrated in lab and pilot scales to decompose numerous recalcitrant organic compounds and microorganism as well in water, further overpass of the hurdles that stand before the real application has become increasingly important. This review focuses on the fundamentals that govern the actual water purification process, including the fabrication of engineered TiO2-based photocatalysts, process optimization, reactor design, and economic consideration. The state of the art of photocatalyst preparation, strategies for process optimization, and reactor design determines the enhanced separation of photo-excited electron-hole (e-h) pairs on the TiO2surface. For the process optimization, the kinetic analysis including the rate-determining steps is in need. For large-scale application of the TiO2-based photocatalysis, economics is vital to balance the fundamentals and the applied factors. The fundamentals in this review are addressed from the perspective of a bridge to the real applications. This review would bring valuably alternative paradigm to the scientists and engineers for their associated research and development activities with an attempt to push the TiO2-based photocatalysis towards industrially feasible applications.

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Sorption Membranes and Filter for Water Purification and Disinfection in Outdoor Conditions

Colloids and Interfaces ◽

10.3390/colloids3010035 ◽

2019 ◽

Vol 3 (1) ◽

pp. 35

Author(s):

Igor Zhuravlev

Keyword(s):

Activated Carbon ◽

Water Purification ◽

Organic Contaminants ◽

Cellulose Fibers ◽

Polluted Water ◽

Paper Pulp ◽

Highly Efficient ◽

Cellulose Pulp ◽

Dirty Water ◽

Paper And Pulp

The aim of this article was to develop a simple, cheap, light, highly efficient sorption membrane and filtering device for the purification of naturally polluted water with application in outdoor conditions. Sorption membranes have been prepared from cellulose pulp using paper and pulp technology. The sorbents were introduced into paper pulp as a filler (as activated carbon) or were chemically grafted to cellulose fibers. The absorption ability of such membranes assembled in a filter device has been investigated. The removal of weighted small mechanical particles, microorganisms, dissolved organic contaminants and colloids, and the undesirable ion impurities by the filter was investigated. Using a 10 × 10 cm filter, purification and disinfection of 18 liters of natural polluted water from a lake was done. Purification of dirty water occurs with gravity from a tank (bucket).

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Current Progress of Capacitive Deionization for Removal of Pollutant Ions

Electrochemical Energy Technology ◽

10.1515/eetech-2016-0004 ◽

2016 ◽

Vol 2 (1) ◽

Cited By ~ 5

Author(s):

Mahendra S. Gaikwad ◽

Chandrajit Balomajumder

Keyword(s):

Water Purification ◽

Polluted Water ◽

Capacitive Deionization ◽

Research Opportunities ◽

Nitrate Ions ◽

Boron Phosphate ◽

New Research

AbstractA mini review of a recently developing water purification technology capacitive deionization (CDI) applied for removal of pollutant ions is provided. The current progress of CDI for removal of different pollutant ions such as arsenic, fluoride, boron, phosphate, lithium, copper, cadmium, ferric, and nitrate ions is presented. This paper aims at motivating new research opportunities in capacitive deionization technology for removal of pollutant ions from polluted water.

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New type solar energy micro-polluted water purification technology and device

Journal of Physics Conference Series ◽

10.1088/1742-6596/2029/1/012066 ◽

2021 ◽

Vol 2029 (1) ◽

pp. 012066

Author(s):

Yaqin Huang ◽

Lishan Rong ◽

Feng Yu ◽

Ziqian Chen ◽

Ling Shi ◽

...

Keyword(s):

Solar Energy ◽

Water Purification ◽

Polluted Water ◽

New Type

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Morphometric and Structural Properties of a Sustainable Plant Biomass with Water Purification Potentials

Sustainability ◽

10.3390/su131911075 ◽

2021 ◽

Vol 13 (19) ◽

pp. 11075

Author(s):

Adeyemi O. Adeeyo ◽

John O. Odiyo ◽

Abimbola M. Enitan ◽

Machawe M. Motsa ◽

Titus A.M. Msagati ◽

...

Keyword(s):

Water Purification ◽

Sessile Drop ◽

Plant Biomass ◽

Surface Characteristics ◽

Polluted Water ◽

Blue Dye ◽

Plant Materials ◽

Treated Effluent ◽

Vis Spectroscopy ◽

Functional Components

The leaf, stem, and root of wild sesame with eco-physiological functions of water and mineral sorption were targeted for water treatment. Morphometric properties of the plant sections were investigated by light microscopy. Structural and surface characteristics of pulverized samples were studied by thermogravimetry (TGA), Raman spectroscopy, Brunauer–Emmett–Teller (BET), and Scanning electron microscopy. Wettability and sorption potentials were studied by sessile drop analysis, while a methylene blue dye polluted water treated with the plant’s sorbents was assessed by UV–Vis spectroscopy. The presence of parenchyma cells, trichomes, vessels, fibres, cellulose, lignin, and other pore-containing structures was confirmed. The stem and root biomasses possessed comparatively higher pore sizes (0.011 and 0.124 µm, respectively), surface energy (33.32 and 31.8 mN/m), and dispersive components (32.45 and 31.65 mN/m). The leaf was high in polar components and had a biomass surface area of 3.19 m2/g. Water treated with the root and stem sorbents gave the lowest dye concentration (0.19 mg/L and 0.20 mg/L, respectively) in treated effluent at 120 mins. It was noted that eco-physiological properties informed water purification potentials of the sampled biomasses and could be used for bioprospecting of useful plant materials for water purification. This study established that functional components of plants, porous characteristics, and surface properties of the materials studied are important factors when considering plant sorbents for water purification.

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