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200 Results Found

  • Article
  • Open Access
7 Citations
7,085 Views
10 Pages

Molecularly Imprinted Filtering Adsorbents for Odor Sensing

  • Sho Shinohara,
  • You Chiyomaru,
  • Fumihiro Sassa,
  • Chuanjun Liu and
  • Kenshi Hayashi

23 November 2016

Versatile odor sensors that can discriminate among huge numbers of environmental odorants are desired in many fields, including robotics, environmental monitoring, and food production. However, odor sensors comparable to an animal’s nose have not yet...

  • Feature Paper
  • Article
  • Open Access
3 Citations
3,864 Views
19 Pages

29 April 2023

The removal of antibiotics from wastewater is receiving considerable attention to fulfill water quality parameters required for reuse. This study compares a spinning submerged filter adsorber with a fixed bed adsorber for continuous antibiotic remova...

  • Article
  • Open Access
11 Citations
3,708 Views
12 Pages

25 September 2018

The fine fraction of granular ferric hydroxide (µGFH, <0.3 mm) is a promising adsorbent for the removal of heavy metals and phosphate, but properties of µGFH were hitherto not known. The present study aimed at characterizing µGFH...

  • Article
  • Open Access
6 Citations
4,775 Views
12 Pages

Utilizing Odor-Adsorbed Filter Papers for Detection Canine Training and Off-Site Fire Ant Indications

  • Wei-Lien Chi,
  • Ching-Hui Chen,
  • Hui-Min Lin,
  • Chung-Chi Lin,
  • Wang-Ting Chen,
  • Yi-Chen Chen,
  • Yi-Yang Lien and
  • Yi-Lun Tsai

26 July 2021

The red imported fire ant (RIFA, Solenopsis invicta) is an exotic aggressive pest that is notorious for its ability to seriously harm humans and animals, cause economic loss to agriculture, and damage ecosystems. This is the first study to validate t...

  • Article
  • Open Access
16 Citations
6,268 Views
14 Pages

22 March 2017

This paper presents an estimation of the service life of three filters composed of sand and three alternative adsorbents for stormwater treatment according to Norwegian water quality standards for receiving surface waters. The study conducted pilot s...

  • Article
  • Open Access
7 Citations
3,480 Views
14 Pages

11 February 2023

The main objective of this study was to assess the usefulness of exhausted activated carbon-based filter cartridges for the removal of organic pollutants from aqueous solutions using the example of two model pollutants: synthetic dyes with different...

  • Article
  • Open Access
7 Citations
3,187 Views
12 Pages

9 June 2021

Steel slag is a secondary product from steelmaking process through alkaline oxygen furnace or electric arc furnace (EAF). The disposal of steel slag has become a thorny environmental protection issue, and it is mainly used as unbound aggregates, e.g....

  • Article
  • Open Access
5 Citations
3,679 Views
10 Pages

Endohedral Fullerene Fe@C28 Adsorbed on Au(111) Surface as a High-Efficiency Spin Filter: A Theoretical Study

  • Ke Xu,
  • Tie Yang,
  • Yu Feng,
  • Xin Ruan,
  • Zhenyan Liu,
  • Guijie Liang and
  • Xiaotian Wang

25 July 2019

We present a theoretical study on the adsorption and spin transport properties of magnetic Fe@C28 using Ab initio calculations based on spin density functional theory and non-equilibrium Green’s function techniques. Fe@C28 tends to adsorb on th...

  • Feature Paper
  • Article
  • Open Access
6 Citations
4,231 Views
16 Pages

Novel Materials for Combined Nitrogen Dioxide and Formaldehyde Pollution Control under Ambient Conditions

  • Hugo S. Russell,
  • James Bonomaully,
  • Rossana Bossi,
  • Magdalena E. G. Hofmann,
  • Hasse C. Knap,
  • Jakob B. Pernov,
  • Marten in ‘t Veld and
  • Matthew S. Johnson

10 September 2020

Formaldehyde (HCHO) and nitrogen dioxide (NO2) often co-exist in urban environments at levels that are hazardous to health. There is a demand for a solution to the problem of their combined removal. In this paper, we investigate catalysts, adsorbents...

  • Article
  • Open Access
10 Citations
2,897 Views
11 Pages

26 August 2022

Indoor air filtration received significant attention owing to the growing threat to the environment and human health caused by air pollutants such as volatile organic compound (VOC) gases. However, owing to the limited adsorption capacity of VOC adso...

  • Article
  • Open Access
2 Citations
3,566 Views
14 Pages

Enhancing Virus Filter Performance Through Pretreatment by Membrane Adsorbers

  • Solomon Isu,
  • Shu-Ting Chen,
  • Raheleh Daneshpour,
  • Hironobu Shirataki,
  • Daniel Strauss,
  • Andrew L. Zydney,
  • Xianghong Qian and
  • Sumith Ranil Wickramasinghe

17 January 2025

Virus filtration is used to ensure the high level of virus clearance required in the manufacture of biopharmaceutical products such as monoclonal antibodies. Flux decline during virus filtration can occur due to the formation of reversible aggregates...

  • Article
  • Open Access
12 Citations
5,876 Views
16 Pages

Efficiency of Private Household Sand Filters in Removing Nutrients and Microbes from Wastewater in Finland

  • Kati Martikainen,
  • Ari Kauppinen,
  • Ville Matikka,
  • Anna-Maria Veijalainen,
  • Eila Torvinen,
  • Tarja Pitkänen,
  • Ilkka T. Miettinen and
  • Helvi Heinonen-Tanski

28 July 2018

Sand filters have been shown to be an economic and effective solution for wastewater treatment in private households, although the removal of phosphorus (P) may be insufficient. However, P removal can be improved by adding a P-adsorbing material, suc...

  • Article
  • Open Access
37 Citations
7,184 Views
11 Pages

23 August 2018

The oil industry is plagued with regular incidences of spills into the environment, causing environmental damage to flora and fauna, especially in marine environments where spills easily travel long distances from their sources. This study was carrie...

  • Article
  • Open Access
7 Citations
2,576 Views
21 Pages

The Impact of Virgin and Aged Microstructured Plastics on Proteins: The Case of Hemoglobin Adsorption and Oxygenation

  • Florent Saudrais,
  • Marion Schvartz,
  • Jean-Philippe Renault,
  • Jorge Vieira,
  • Stéphanie Devineau,
  • Jocelyne Leroy,
  • Olivier Taché,
  • Yves Boulard and
  • Serge Pin

Plastic particles, particularly micro- and nanoparticles, are emerging pollutants due to the ever-growing amount of plastics produced across a wide variety of sectors. When plastic particles enter a biological medium, they become surrounded by a coro...

  • Article
  • Open Access
8 Citations
3,328 Views
10 Pages

Control over spin states at the single molecule level is a key issue in the emerging field of molecular spintronics. Here, we explore the chemical adsorption effect on the magnetic and spin-transport properties of individual magnetic molecule by perf...

  • Communication
  • Open Access
54 Citations
4,877 Views
14 Pages

In recent years, carbon nanotubes (CNTs) have been intensively studied as an effective adsorbent for the removal of pollutants from wastewater. One of the main problems for its use corresponds to the agglomeration of the CNTs due to the interactions...

  • Article
  • Open Access
30 Citations
6,633 Views
19 Pages

Facile Surface Treatment of 3D-Printed PLA Filter for Enhanced Graphene Oxide Doping and Effective Removal of Cationic Dyes

  • Sung-Sil Park,
  • Yun-Seok Lee,
  • Seung-Woo Lee,
  • Eveliina Repo,
  • Tae-Hyun Kim,
  • Yuri Park and
  • Yuhoon Hwang

4 January 2023

The structured adsorption filter material is one of the ways to enhance the practical applicability of powdered adsorbents, which have limitations in the real water treatment process due to difficulty in the separation process. In this study, three-d...

  • Article
  • Open Access
18 Citations
5,098 Views
20 Pages

Desorption of Organic Micropollutants from Loaded Granular Activated Carbon

  • Daniela Reif,
  • Ernis Saracevic,
  • Monika Šabić Runjavec,
  • Julia Haslinger,
  • Heidemarie Schaar and
  • Norbert Kreuzinger

3 October 2020

The loading of granular activated carbon (GAC) is influenced by the amount of water treated and the concentrations of adsorbates present in the water matrix. Through extraction experiments, we aimed to investigate the total adsorbed mass of eight org...

  • Review
  • Open Access
15 Citations
4,454 Views
34 Pages

The Potential of Electrospun Membranes in the Treatment of Textile Wastewater: A Review

  • Joana M. Rocha,
  • Rui P. C. L. Sousa,
  • Raul Fangueiro and
  • Diana P. Ferreira

13 March 2024

Water security and industrial wastewater treatment are significant global concerns. One of the main issues with environmental contamination has been the discharge of dye wastewater from the textile and dye industries, contributing to an ever-growing...

  • Article
  • Open Access
3 Citations
2,451 Views
13 Pages

Filtration of Elastic Polymers and Spherical Gels through a Silica-Deposited Layer on a Porous Membrane

  • Takanori Hidane,
  • Hidemi Kitani,
  • Shintaro Morisada,
  • Keisuke Ohto,
  • Hidetaka Kawakita and
  • Sachiko Furuta

28 December 2020

A 120-nm silica suspension was permeated through a porous polyethylene (PE) hollow-fiber membrane, as was a solution of deformable elastic particles of poly(N-isopropylacrylamide) (PNIPAM) gel and dextran. The amount adsorbed and flux of permeation w...

  • Article
  • Open Access
1 Citations
885 Views
12 Pages

7 March 2025

The utility of four mineral adsorbents as potential feed additives to bind the boar taint compounds, androstenone and skatole, was assessed with an in vitro system. The adsorbents were bentonite (BNT), diatomaceous earth (DE), spent filter aid (SFA)...

  • Article
  • Open Access
3 Citations
3,861 Views
19 Pages

Infiltration Response of Adsorbent Amended Filters for Stormwater Management under Freezing/Thawing Conditions

  • Carlos Monrabal-Martinez,
  • Elena Scibilia,
  • Sønke Maus and
  • Tone M. Muthanna

12 December 2019

Coastal cold climates experience frequent intermittent melting and freezing periods over the cold period. This intermittent freezing in stormwater systems affects the infiltration capacity and hence the performance. This paper investigates the infilt...

  • Article
  • Open Access
5 Citations
2,252 Views
17 Pages

Adsorption of Heavy Metals on Alkali-Activated Zeolite Foams

  • Eliška Svobodová,
  • Zdeněk Tišler,
  • Kateřina Peroutková,
  • Kateřina Strejcová,
  • Jan Abrham and
  • Josef Šimek

31 January 2024

Elevated concentrations of heavy metals in natural waters can cause significant ecological problems. It is therefore essential to ensure their removal from any water discharged into the environment immediately, especially in case of an accident, wher...

  • Communication
  • Open Access
2 Citations
3,028 Views
10 Pages

A Novel Approach to Water Softening Based on Graphene Oxide-Activated Open Cell Foams

  • Riccardo Balzarotti,
  • Alessandro Migliavacca,
  • Andrea Basso Peressut,
  • Alessandro Mansutti and
  • Saverio Latorrata

7 January 2023

This work focuses on exploring a new configuration for the reduction of water hardness based on the surface modification of polyurethane (PU) open cell foams by the deposition of thin graphene oxide (GO) washcoat layers. GO was deposited by the dip&n...

  • Article
  • Open Access
3 Citations
1,260 Views
17 Pages

9 September 2023

Waste valorization is attracting not only the scientific world but also the world. Acetylcellulose wastes from cigarette filter residuals are signified as the largest global impact of solid waste. Acetylcellulose recycling for desired products is a p...

  • Feature Paper
  • Article
  • Open Access
10 Citations
4,129 Views
18 Pages

Comparative Life-Cycle Cost Analysis of Alternative Technologies for the Removal of Emerging Contaminants from Urban Wastewater

  • David Pryce,
  • Fatemah Alsharrah,
  • Ahmed M. E. Khalil,
  • Zoran Kapelan and
  • Fayyaz A. Memon

14 June 2022

Emerging contaminants (ECs) continue to threaten our fragile ecosystem, yet their mitigation remains limited by economic factors. Meanwhile, a relatively expensive material, Graphene Oxide (GO), has shown promise as a solution for EC removal followin...

  • Article
  • Open Access
9 Citations
4,349 Views
12 Pages

In Vitro Simulated Hemoperfusion on Seraph®-100 as a Promising Strategy to Counteract Sepsis

  • Antonio Lacquaniti,
  • Antonella Smeriglio,
  • Susanna Campo,
  • Erminia La Camera,
  • Giovanni Lanteri,
  • Elena Giunta,
  • Paolo Monardo and
  • Domenico Trombetta

Blood purification represents a treatment option for sepsis, improving inflammation and the hyper-activated immune system. This study investigates the binding efficacy of Seraph®-100 against 108 CFU/mL of Staphylococcus aureus (S. aureus), Pseudo...

  • Article
  • Open Access
29 Citations
5,819 Views
19 Pages

Polyurethane Foams for Domestic Sewage Treatment

  • Ewa Dacewicz and
  • Joanna Grzybowska-Pietras

16 February 2021

The aim of the study was to assess the possibility of using polyurethane foams (PUF) as a filling of a foam-sand filter to directly treat domestic sewage with increased content of ammonium nitrogen and low organic carbon to nitrogen ratio (C/N). The...

  • Article
  • Open Access
5 Citations
3,611 Views
14 Pages

27 November 2023

As pollution escalates, water purification is becoming crucial, with adsorption emerging as an efficient technique. This study aimed to evaluate the effectiveness of iron-modified rice husk biochar as an adsorbent for water pollutants. The biochar wa...

  • Article
  • Open Access
4 Citations
1,380 Views
15 Pages

Sulfonated Pentablock Copolymer with Graphene Oxide for Co2+ Ions Removal: Efficiency, Interaction Mechanisms and Secondary Reaction Products

  • Simona Filice,
  • Viviana Scuderi,
  • Massimo Zimbone,
  • Sebania Libertino,
  • Luana La Piana,
  • Roberta Agata Farina and
  • Silvia Scalese

29 September 2023

In this work, sulfonated pentablock copolymer (s-PBC) and s-PBC mixed with graphene oxide (s-PBC_GO) layers were deposited on polypropylene (PP) fibrous filters and tested as active coatings for the removal of cobalt ions from water using adsorption...

  • Article
  • Open Access
5 Citations
3,765 Views
15 Pages

10 March 2023

The release of Cu into water is an immediate concern that negatively affects environmental health. To eliminate this problem, the adsorption of Cu(II) on varying substances has been studied widely for two decades. The utilization of low-cost adsorben...

  • Article
  • Open Access
5 Citations
2,580 Views
14 Pages

10 August 2022

To efficiently and synchronously separate oil/water mixture and adsorbed dyes, corn-cob-covered quartz sand (CCQS) filter media with underwater superoleophobic qualities and underoil extremely hydrophobic qualities were fabricated by grafting a corn...

  • Article
  • Open Access
1 Citations
1,391 Views
19 Pages

Study on Demulsification via Vacuum Filtration with Superamphiphilic Diatomite/G-C3N4/Rice Husk Charcoal Composite Filter Layer

  • Yue Wang,
  • Tianxin Chen,
  • Yu Jia,
  • Feng Qin,
  • Junhui Gao,
  • Xingyang Zhang,
  • Jiahong He and
  • Jian He

22 February 2025

The primary extraction way for unconventional oil/gas resources is hydraulic fracturing to alter the reservoir for commercial production. However, hydraulic fracturing technology consumes a large amount of water, and the flowback water can easily be...

  • Article
  • Open Access
27 Citations
5,465 Views
15 Pages

Drinking water containing a high amount of ammonium-nitrogen (NH4+-N) is not effectively removed by conventional treatment processes and can cause eutrophication. In this research, a composite adsorbent based on chitosan crosslink with zeolite molecu...

  • Article
  • Open Access
29 Citations
5,240 Views
18 Pages

The article deals with the preparation and possibilities of using combined filtration sorption systems usable for the construction of folded filters or respirators. The studied materials are made of several structural layers—a filter membrane m...

  • Article
  • Open Access
8 Citations
3,219 Views
13 Pages

Evaluation of Ceramics Adsorption Filter as a Pretreatment for Seawater Reverse-Osmosis Desalination

  • Jingwei Wang,
  • Lee Nuang Sim,
  • Jia Shin Ho,
  • Keiko Nakano,
  • Yusuke Kinoshita,
  • Kenichiro Sekiguchi and
  • Tzyy Haur Chong

29 November 2022

Seawater reverse osmosis (SWRO) is the most energy-efficient process for desalination to produce drinking water from seawater. However, its sustainability is still challenged by membrane fouling. Appropriate feed water quality is one of the crucial p...

  • Article
  • Open Access
2 Citations
1,286 Views
14 Pages

21 October 2024

UV filters and parabens, as ingredients of cosmetics, are commonly occurring water pollutants. In our work, nutshells were used as biosorbents in the developed analytical procedure for the determination of UV filters and parabens in water samples. Th...

  • Article
  • Open Access
10 Citations
5,011 Views
12 Pages

The Drawback of Optimizing Air Cleaner Filters for the Adsorption of Formaldehyde

  • Stefan Schumacher,
  • Anna Caspari,
  • Ute Schneiderwind,
  • Katharina Staack,
  • Uta Sager and
  • Christof Asbach

16 January 2024

Air cleaners with activated carbon (AC) filters for the adsorption of gaseous pollutants are often used to improve indoor air quality. As formaldehyde is a common and health-relevant indoor air pollutant, many testing standards for air cleaners, such...

  • Article
  • Open Access
3 Citations
4,509 Views
17 Pages

Treatment of Domestic Wastewater in Small-Scale Sand Filters Fortified with Gypsum, Biotite, and Peat

  • Kati Martikainen,
  • Anna-Maria Veijalainen,
  • Eila Torvinen and
  • Helvi Heinonen-Tanski

11 January 2023

Sand filtration is a low-cost and easy solution for household wastewater treatment in areas lacking a centralized sewage system. However, there are only a few studies about the treatment efficiencies of nutrients and enteric microorganisms and their...

  • Article
  • Open Access
9 Citations
2,871 Views
14 Pages

Clustering the Adsorbents of Horizontal Series Filtration in Greywater Treatment

  • Mehdi Bahrami,
  • Mohammad Javad Amiri and
  • Mohammad Reza Mahmoudi

15 April 2020

One of the important alternative water resources for non-potable purposes is greywater (GW), which must be cleaned of contaminants. In this regard, the clustering analysis of materials consisting of sand (S), zeolite (Z), peat (P) and granular activa...

  • Article
  • Open Access
10 Citations
3,620 Views
17 Pages

31 May 2021

Recycling and reusing glass fiber waste (GFW) has become an environmental concern, as the means of disposal are becoming limited as GFW production increases. Therefore, this study developed a novel, cost-effective method to turn GFW into a mesoporous...

  • Article
  • Open Access
12 Citations
3,255 Views
11 Pages

Advanced Dye Sorbents from Combined Stereolithography 3D Printing and Alkali Activation of Pharmaceutical Glass Waste

  • Mokhtar Mahmoud,
  • Jozef Kraxner,
  • Hamada Elsayed,
  • Dušan Galusek and
  • Enrico Bernardo

1 October 2022

Additive manufacturing (AM) technologies enable the fabrication of objects with complex geometries in much simpler ways than conventional shaping methods. With the fabrication of recyclable filters for contaminated waters, the present work aims at ex...

  • Article
  • Open Access
2 Citations
3,581 Views
17 Pages

Application of High-Gradient Magnetic Separation for the Recovery of Super-Paramagnetic Polymer Adsorbent Used in Adsorption and Desorption Processes

  • Jyi-Yeong Tseng,
  • Chia-Chi Chang,
  • Cheng-Wen Tu,
  • Min-Hao Yuan,
  • Ching-Yuan Chang,
  • Chiung-Fen Chang,
  • Yi-Hung Chen,
  • Je-Lueng Shie,
  • Dar-Ren Ji and
  • Matthias Franzreb

21 March 2023

This study examined the application of high-gradient magnetic separation (HGMS) for recycling of super-paramagnetic polymer adsorbent (MPA), namely, polyvinyl acetate-iminodiacetic acid. The HGMS can be incorporated with the adsorption and desorption...

  • Article
  • Open Access
398 Views
18 Pages

Performance of a Zeolite-Filled Slow Filter for Dye Removal and Turbidity Reduction

  • Shynggyskhan Sultakhan,
  • Makhabbat Kunarbekova,
  • Bostandyk Khalkhabai,
  • Ulan Kakimov,
  • Erzhan Kuldeyev,
  • Ronny Berndtsson,
  • Jechan Lee and
  • Seitkhan Azat

15 December 2025

Ever-increasing global water shortages necessitate more advanced and cost-effective water purification methods. Herein, a novel slow filtration system using natural raw zeolite is proposed as an alternative to traditional quartz sand as a filter medi...

  • Article
  • Open Access
5 Citations
8,591 Views
18 Pages

12 March 2014

In this study, we examined the comprehensive detection of numerous volatile molecules based on the olfactory information constructed by using olfaction-inspired sensor technology. The sensor system can simultaneously detect multiple odors by the sepa...

  • Article
  • Open Access
16 Citations
7,007 Views
16 Pages

6 July 2020

This paper describes designing, manufacturing, and evaluating an eco-friendly modular-type air purification system to enhance the removal efficiency of fine particulate matter (PM) in urban public spaces, especially in hotspots. This system consists...

  • Article
  • Open Access
14 Citations
3,114 Views
15 Pages

19 December 2023

Vast amounts of dyeing wastewater released from the textile industry can not only cause water pollution but also have negative effects on the human body, such as skin irritation and respiratory diseases. Dye adsorption technology is necessary for the...

  • Article
  • Open Access
5 Citations
3,437 Views
15 Pages

Utilization of Biomass Waste at Water Treatment

  • Isabel Pestana da Paixão Cansado,
  • Pedro Francisco Geraldo,
  • Paulo Alexandre Mira Mourão,
  • José Eduardo Castanheiro,
  • Elisabete Palma Carreiro and
  • Suhas

This work presents some preliminary results on the direct use of untreated biomass from agricultural activities as adsorbents for water treatment. Waste was also used to produce activated carbons (ACs) by chemical activation with KOH. The efficacy of...

  • Article
  • Open Access
1,005 Views
18 Pages

30 August 2025

Activated charcoal (AC) is an adsorbent that can prevent the accumulation of boar taint-causing compounds in the fat, but is not an approved dietary additive for livestock animals. Biochar (BC) is a similar feed-approved charcoal adsorbent that may b...

  • Article
  • Open Access
7 Citations
2,207 Views
18 Pages

Natural Rubber/Hexagonal Mesoporous Silica Nanocomposites as Efficient Adsorbents for the Selective Adsorption of (−)-Epigallocatechin Gallate and Caffeine from Green Tea

  • Kamolwan Jermjun,
  • Rujeeluk Khumho,
  • Mookarin Thongoiam,
  • Satit Yousatit,
  • Toshiyuki Yokoi,
  • Chawalit Ngamcharussrivichai and
  • Sakdinun Nuntang

11 August 2023

(–)-Epigallocatechin gallate (EGCG) is a bioactive component of green tea that provides many health benefits. However, excessive intake of green tea may cause adverse effects of caffeine (CAF) since green tea (30–50 mg) has half the CAF c...

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