Search query: activate carbon nanomaterials for treating combined pollution

Related papers:

abstract: Semiconductor photocatalysis has important applications such as achieving sustainable energy generation and treating environmental pollution. TiO2 has been the most widely researched photocatalyst, but suffers from low efficiency and narrow light response range. Combining TiO2 with carbonaceous nanomaterials is being increasingly investigated as a means to increase photocatalytic activity, and demonstrations of enhancement are plentiful. This review surveys the literature and highlights recent progress in the development of nanocarbon TiO2 photocatalysts, covering activated carbon, carbon doping, carbon nanotubes, [60] fullerenes, graphene, thin layer carbon coating, nanometric carbon black and more recently developed morphologies. Mechanisms of enhancement, synthesis routes and future applications are summarised and discussed. New insight and enhanced photocatalytic activity may be provided by novel nanocarbon TiO2 systems. Ongoing challenges and possible new directions are outlined.
author_names: Rowan K Leary

A V K Westwood
title: Carbonaceous nanomaterials for the enhancement of TiO2 photocatalysis
year: 2011

abstract: Rapid global industrialization and explosive population growth have resulted in an increase in the discharge of harmful and toxic compounds. These toxic inorganic gases, volatile organic compounds, heavy metals, personal care products, endocrine disrupting chemicals, dyes, and pharmaceuticals are destroying the balance in the Earth and increasing environmental toxicity at an alarming rate. Thus, their detection, adsorption and removal are of great significance. Various carbon nanomaterials including carbon nanotubes, graphene, mesoporous carbon, carbon dots, and boron doped diamond have been extensively utilized and further proven to be ideal candidates for resolving environmental problems, emerging as adsorbents, electrochemical sensors and electrodes. Herein, we review the recent advances, progress and achievements in the design and properties of carbon nanomaterials and their applications for the electrochemical detection and removal of environmental pollutants.
author_names: Ya-nan Zhang

Qiongyan Niu

Xiaotong Gu

Nianjun Yang

Guohua Zhao
title: Recent progress on carbon nanomaterials for the electrochemical detection and removal of environmental pollutants.
venue: Nanoscale
year: 2019

abstract: Rationally designed nanomaterials from synthetic/biopolymers like chitosan, zeolites, graphene, nanometal/oxides, zerovalent metal/magnetic iron, OMS and nanocarbon/ carbon nanotube (CNT) utilized in desalination/purification are thoroughly discussed. Conventional desalination membrane/materials own inherent limitations; nevertheless, designed nanocomposite/hybrid/films address the new challenges/constraints and consequently aid the remediation of environmental/water pollution, thus denoting prospective nanotechnology/science. The morphology and chemical functionality of certain natural/synthetic polymers are altered/controlled rationally yielding advanced membranes/materials, for example, aquaporin, nanochannels, graphene and smart selfassemble block copolymer blends to cater futuristic desalination needs besides superseded conventional membrane limitations too. In a nut shell, advance nanotechnology via electrospinning, track etching, phase inversion and interfacial polymerization yields structured composites/matrixes that conquer traditional barriers of conventional desalination and supplies treated/purified water. This review confers synthetic strategy and utility of nanomaterials that are procured via ordered/rational designing/self assembly to be used in separation techniques including RO/FO antifouling membrane, superwet surface, oil water/emulsion separation and multifunctional desalination nanodevices.
author_names: Rajendra Sukhadeorao Dongre
title: Rationally Fabricated Nanomaterials for Desalination and Water Purification
year: 2018

abstract: Thallium (Tl) is a typical toxic metal, which poses a great threat to human health through drinking water and the food chain (biomagnification) China has rich Tl bearing mineral resources, which have been extensively explored and utilized, leading to release of large amounts of Tl into the environment. However, research on Tl pollution and removal techniques is relatively limited, because Tl has not been listed within the scope of environmental monitoring in China for several decades. This paper reviewed Tl pollution in wastewater arising from various industries in China, as well as the latest available methods for treating Tl containing industrial wastewater, in order to give an outlook on effective technologies for controlling Tl pollution. Conventional physical and chemical treatment technologies are efficient at removing trace amounts of Tl, but it proved to be difficult to achieve the stringent environmental standard =0.1 5 mg/L) cost effectively. Adsorption by using newly developed nanomaterials, and metal oxide modified polymer materials and microbial fuel cells are highly promising and expected to become next generation technologies for remediation of Tl pollution. With the potential for greater Tl contamination in the environment under accelerated growth of industrialization, researches based on lab scale implementation of such promising treatment technologies should be further expanded to pilot and industrial scale, ensuring environmental protection and the safety of drinking water for sustainable development. Comprehensive insights into experiences of Tl pollution in China and in depth perspectives on new frontier technologies of Tl removal from wastewaters will also benefit other nations/regions worldwide, which are susceptible to high exposure to Tl likewise.
author_names: Juan Liu

Xuwen Luo

Yuqing Sun

Daniel C W Tsang

Jian-ying Qi

Weilong Zhang

Nuo Li

Meiling Yin

Jin Wang

Holger Lippold

Yongheng Chen

Guodong Sheng
title: Thallium pollution in China and removal technologies for waters: A review.
venue: Environment international
year: 2019

abstract: Carbon based nanomaterials, especially carbon nanotubes and graphene, have drawn wide attention in recent years as novel materials for environmental applications. Notably, the functionalized derivatives of carbon nanotubes and graphene with high surface area and adsorption sites are proposed to remove heavy metals via adsorption, addressing the pressing pollution of heavy metal. This critical revies assesses the recent development of various functionalized carbon nanotubes and graphene that are used to remove heavy metals from contaminated water, including the preparation and characterization methods of functionalized carbon nanotubes and graphene, their applications for heavy metal adsorption, effects of water chemistry on the adsorption capacity, and decontamination mechanism. Future research directions have also been proposed with the goal of further improving their adsorption performance, the feasibility of industrial applications, and better simulating adsorption mechanisms.
author_names: Jiang Xu

Zhenzhen Cao

Yilin Zhang

Zilin Yuan

Zimo Lou

Xinhua Xu

Xiangke Wang
title: A review of functionalized carbon nanotubes and graphene for heavy metal adsorption from water: Preparation, application, and mechanism.
venue: Chemosphere
year: 2018

abstract: Removal of contaminants in wastewater, such as heavy metals, has become a severe problem in the world. Numerous technologies have been developed to deal with this problem. As an emerging technology, nanotechnology has been gaining increasing interest and many nanomaterials have been developed to remove heavy metals from polluted water, due to their excellent features resulting from the nanometer effect. In this work, novel nanomaterials, including carbon based nanomaterials, zero valent metal, metal oxide based nanomaterials, and nanocomposites, and their applications for the removal of heavy metal ions from wastewater were systematically reviewed. Their efficiency, limitations, and advantages were compared and discussed. Furthermore, the promising perspective of nanomaterials in environmental applications was also discussed and potential directions for future work were suggested.
author_names: Jinyue Yang

Baohong Hou

Jingkang Wang

Beiqian Tian

Jingtao Bi

Na Wang

Xin Li

Xin Huang
title: Nanomaterials for the Removal of Heavy Metals from Wastewater
venue: Nanomaterials
year: 2019

abstract: In order to improve the indoor air quality, volatile organic compounds (VOCs) can be removed via an efficient approach by using catalysts. This review proposed a comprehensive summary of various nanomaterials for thermal/photo catalytic removal of VOCs. These representative materials are mainly categorized as carbon based and metallic oxides materials, and their morphologies, synthesis techniques, and performances have been explained in detail. To improve the indoor and outdoor air quality, the catalytic nanomaterials can be utilized for emerging building applications such as VOC reduction coatings, paints, air filters, and construction materials. Due to the characteristics of low cost, non toxic and high chemical stability, metallic oxides such as TiO2 and ZnO have been widely investigated for decades and dominate the application market of VOC removal catalyst in buildings. Since other catalysts also showed brilliant performance and have been theoretically researched, they can be potential candidates for applications in future healthy buildings. This review will contribute to further knowledge and greater potential applications of promising VOC reducing catalytic nanomaterials on healthier buildings for a better indoor and outdoor environment well being.
author_names: Kwok Wei Shah

Wenxin Li
title: A Review on Catalytic Nanomaterials for Volatile Organic Compounds VOC Removal and Their Applications for Healthy Buildings
venue: Nanomaterials
year: 2019

abstract: Abstract The huge volume of oily wastewater produced from the industries has resulted in alarming environmental pollution and resource usage problems. A wide range of conventional and emerging approaches have been established to effectively reduce all these pollutants to an acceptable level to discharge the treated wastewater for reuse. Lately, nanomaterials have shown great potential to address this issue based on their unique and exceptionally properties such as high surface area, superhydrophilicity/hydrophobicity and surface functionalities. This chapter discusses the application of emerging nanomaterials for oily wastewater treatment. The characteristics of these nanomaterials and their hybrid or nanocomposites for oily water treatment are discussed. Finally, a brief future outlook and concluding remarks are presented.
author_names: Pei Sean Goh

Chi Siang Ong

Be Cheer Ng

Ahmad Fauzi Ismail
title: Applications of Emerging Nanomaterials for Oily Wastewater Treatment
year: 2019

abstract: Industrial wastewater is a universal environmental issue. Numerous organic pollutants, heavy metals, and non disintegrating materials are present at extreme concentrations. Presently, removing these pollutants from industrial wastewater in an effective way has become a momentous issue. Efficient purification procedures are needed to remove those pollutants before disposal. In this direction, wastewater treatment has been one of the nanomaterial applications. Additionally, nanomaterials are innovationally effective for purifying water by using low budget nanoadsorbents and nanofiltration. This review article highlights the use of nanomaterials for the removal of different polluting materials from industrial wastewater with a special focus on metal and metal oxide nanomaterials (NMs) carbon based nanomaterials (CNMs) and nanofiber/nanocomposite membranes. The goal is to offer a recent overview and references in the area of emergent nanomaterials used for removing toxic pollutants from real industrial wastewater for researchers and industrializers.
author_names: Sabah Mohamed Abdelbasir

Ahmed Esmail Shalan
title: An overview of nanomaterials for industrial wastewater treatment
venue: Korean Journal of Chemical Engineering
year: 2019

abstract: Wastewater that contains heavy metal ions is considered as the serious threat for environmental pollution. Most of the heavy metals are toxic and their ions are not biodegradable with the tendency to accumulate in the soil and in the living organisms, and hence they are significant environmental pollutants. Therefore, the treatment of the heavy metal ions and their elimination from water and wastewater is very important for environmental protection, and thus the public health. Adsorption is the most commonly used method for removal of the heavy metal ions from large volumes of aqueous solutions. There are a number of materials that can be applied as adsorbents for heavy metals. The clay minerals (bentonite) zeolites, activated carbon, metal oxides, are widely used as conventional adsorbents in the removal of different heavy metal ions, such as Zn(II) Pb(II) Ni(II) Cd(II) Cu(II) from wastewater. The development of nanotechnology enabled nanomaterials, such as graphene and carbon nanotubes, to be widely used as the effective sorbents for the heavy metal elimination from wastewater.
author_names: Katerina Atkovska

Kiril Lisichkov

Gordana Ruseska

Aleksandar T Dimitrov

Anita Grozdanov
title: REMOVAL OF HEAVY METAL IONS FROM WASTEWATER USING CONVENTIONAL AND NANOSORBENTS: A REVIEW
year: 2018