Log in

Relevant bibliographies by topics / Degradation of organic pollutants / Journal articles

To see the other types of publications on this topic, follow the link: Degradation of organic pollutants.

Journal articles on the topic 'Degradation of organic pollutants'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Degradation of organic pollutants.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Ye, Lin, Nirmala N. Khandan, and Findlay G. Edwards. "Biological treatment of airstreams contaminated with organic vapors." Water Science and Technology 30, no. 7 (October 1, 1994): 71–74. http://dx.doi.org/10.2166/wst.1994.0311.

Full text

Abstract:

Increases in regulatory control of discharges of organic vapors require improvement of traditional methods of removal and treatment of organic vapors from airstreams. The traditional methods of removal, various forms of adsorption, only change the phase of the pollutants. Subsequent treatment of the pollutants has proven to be energy intensive and therefore expensive. Biological treatment of organics has proven to be inexpensive but requires that the organics be in dissolved form, in the liquid phase, and at a concentration above a minimum concentration. Adsorption of organics in the gas phase onto activated carbon, which is suspended in water, will remove the pollutants from the gas phase and can increase the aqueous concentration, in the region around each activated carbon particle, above the required minimum for biological degradation. The organic pollutants can then be biodegraded leaving harmless by-products. Design of a reactor to provide for the phase change and the biodegradation of the pollutant requires development of a theoretical model and validation of the model.

APA, Harvard, Vancouver, ISO, and other styles

2

Goskonda, Sridevi, W. James Catallo, and Thomas Junk. "Sonochemical degradation of aromatic organic pollutants." Waste Management 22, no. 3 (June 2002): 351–56. http://dx.doi.org/10.1016/s0956-053x(01)00035-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Wang, Chong-Chen, Jian-Rong Li, Xiu-Liang Lv, Yan-Qiu Zhang, and Guangsheng Guo. "Photocatalytic organic pollutants degradation in metal–organic frameworks." Energy Environ. Sci. 7, no. 9 (2014): 2831–67. http://dx.doi.org/10.1039/c4ee01299b.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Han, Li, Yan Gao, Xing Gao, Weijuan Gong, and Hui Wang. "Degradation of Organic Pollutants by Titanium Dioxide Matrix Composites." E3S Web of Conferences 245 (2021): 02039. http://dx.doi.org/10.1051/e3sconf/202124502039.

Full text

Abstract:

As a semiconductor material, titanium dioxide has the advantages of stable chemical properties, no pollution and low price, which is widely used in the field of organic pollutant degradation. The modification methods of semiconductor composite and nonmetallic doping for titanium dioxide are described. The degradation efficiency of modified titanium dioxide composite for organic pollutants is proposed. The advantages and disadvantages of the composite in preparation and application are pointed out. Finally, the development direction of modified titanium dioxide composite in the future is described.

APA, Harvard, Vancouver, ISO, and other styles

5

Wang, Ru Qin. "Degradation of Persistent Organic Pollutants Mechanism Summary." Advanced Materials Research 356-360 (October 2011): 620–23. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.620.

Full text

Abstract:

Persistent organic pollutants (POPs) refers to the chemical structure stability, the toxicity, big,difficult biodegradation , there is a long time in nature,.to concentrate the detention easily in organism kind of organic chemistry pollutant.POPs has become the field of environmental chemistry and toxicology studies of ecological problems affecting human survival, it is the 21st century, a major health problem. Overview of the current domestic and international persistent organic pollutants on the degradation mechanism of the type. Presented on persistent organic pollutants to solve the problem.

APA, Harvard, Vancouver, ISO, and other styles

6

Serrano, B., and H. de Lasa. "Photocatalytic degradation of water organic pollutants: pollutant reactivity and kinetic modeling." Chemical Engineering Science 54, no. 15-16 (July 1999): 3063–69. http://dx.doi.org/10.1016/s0009-2509(98)00478-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Ameta, Rakshit, Surbhi Benjamin, Aarti Ameta, and Suresh C. Ameta. "Photocatalytic Degradation of Organic Pollutants: A Review." Materials Science Forum 734 (December 2012): 247–72. http://dx.doi.org/10.4028/www.scientific.net/msf.734.247.

Full text

Abstract:

Water pollution is increasing at an ever increasing pace and the whole world is in the cancerous grip of this pollution. Various industries are discharging their untreated effluents into the nearby water resources; thus, adding to the existing water pollution to a great extent. Hence, there is a pressing demand to develop an alternate technology for wastewater treatment and in this context; photocatalysis has emerged as an Advanced Oxidation Process with green chemical approach for such a treatment. This chapter deals with photocatalytic degradation of different kinds of organic pollutants; mainly surfactants, pesticides, dyes, phenols, chloro compounds, nitrogen containing compounds etc. Mechanisms of their degradation have also been discussed with hydroxyl and allied radicals as the main active oxidizing species.

APA, Harvard, Vancouver, ISO, and other styles

8

Balbayeva, Gaukhar, Azat Yerkinova, Vassilis J. Inglezakis, and Stavros G. Poulopoulos. "Photochemical Degradation of Organic Pollutants in Wastewaters." IOP Conference Series: Materials Science and Engineering 301 (January 2018): 012099. http://dx.doi.org/10.1088/1757-899x/301/1/012099.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Pirilä, Minna, Mohammed Saouabe, Satu Ojala, Buddhika Rathnayake, Fabien Drault, Anna Valtanen, Mika Huuhtanen, Rachid Brahmi, and Riitta L. Keiski. "Photocatalytic Degradation of Organic Pollutants in Wastewater." Topics in Catalysis 58, no. 14-17 (August 18, 2015): 1085–99. http://dx.doi.org/10.1007/s11244-015-0477-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Mansouri, L., L. Bousselmi, and A. Ghrabi. "Degradation of recalcitrant organic contaminants by solar photocatalysis." Water Science and Technology 55, no. 12 (June 1, 2007): 119–25. http://dx.doi.org/10.2166/wst.2007.397.

Full text

Abstract:

Biological pre-treated landfill leachates of Djebel Chakir contains some macromolecular organic substances that are resistant to biological degradation. The aim of the present work is to assess the feasibility of removing refractory organic pollutants in biological pre-treated landfill leachate by solar photocatalyse process. Leachate pollutant contents are studied to assess their contribution to leachate pollution and their treatability by solar photocatalyse process. Phenol is chosen as model of pollutants, to evaluate its removal and the efficiency of the photocatalytic system. The experiments were carried out in suspended photocatalytic reactor, using TiO2 Degussa P25, under sunlight illumination (UV-A: 15–31 W/cm2). Under optimum operational conditions, applied to single reactant (phenol), the system presents a TOC removal of 90% (the degradation follows a first-order kinetic). Based on the TOC removal, the results shows that the degradation of biological pre-treated leachate follows a zero-order kinetic. After 5 h of sunlight exposure, 74% of COT is removed. The TOC removal is the best without any correction of the pH and at the TiO2 concentration of 2.5 g/L. The photocatalytic degradation of organic contaminants as well as the formation and disappearance of the by-products were followed by GC/MS. The solar photocatalysis processes induce several modifications of the matrix leading to more biodegradable forms: all the remaining and new compounds generated after the biological pre-treatment of leachate are degraded and other types of organics appear, mainly carboxylic acid, aliphatic hydrocarbons and phtalic acids.

APA, Harvard, Vancouver, ISO, and other styles

11

Nikoonahad, Ali, Babak Djahed, Samira Norzaee, Hadi Eslami, Zahra Derakhshan, Mohammad Miri, Yadolah Fakhri, et al. "An overview report on the application of heteropoly acids on supporting materials in the photocatalytic degradation of organic pollutants from aqueous solutions." PeerJ 6 (September 12, 2018): e5501. http://dx.doi.org/10.7717/peerj.5501.

Full text

Abstract:

Organic pollutants contaminate water resources and the environment when discharged into water streams. Also, the presence of these materials in incompletely treated or untreated wastewater leads to serious environmental hazards. The hydroxyl radicals and holes are regarded as the most oxidant species in the degradation of organic pollutants using the studied composites. The results of this review show that heteropoly acids on supporting materials could be considered as appropriate photocatalysts in the removal of organic pollutant from aqueous solutions.

APA, Harvard, Vancouver, ISO, and other styles

12

JagannathanMadhavan, JayaramanTheerthagiri, DhandapaniBalaji, SallaSunitha, Choi, and MuthupandianAshokkumar. "Hybrid Advanced Oxidation Processes Involving Ultrasound: An Overview." Molecules 24, no. 18 (September 13, 2019): 3341. http://dx.doi.org/10.3390/molecules24183341.

Full text

Abstract:

: Sonochemical oxidation of organic pollutants in an aqueous environment is considered to be a green process. This mode of degradation of organic pollutants in an aqueous environment is considered to render reputable outcomes in terms of minimal chemical utilization and no need of extreme physical conditions. Indiscriminate discharge of toxic organic pollutants in an aqueous environment by anthropogenic activities has posed major health implications for both human and aquatic lives. Hence, numerous research endeavours are in progress to improve the efficiency of degradation and mineralization of organic contaminants. Being an extensively used advanced oxidation process, ultrasonic irradiation can be utilized for complete mineralization of persistent organic pollutants by coupling/integrating it with homogeneous and heterogeneous photocatalytic processes. In this regard, scientists have reported on sonophotocatalysis as an effective strategy towards the degradation of many toxic environmental pollutants. The combined effect of sonolysis and photocatalysis has been proved to enhance the production of high reactive-free radicals in aqueous medium which aid in the complete mineralization of organic pollutants. In this manuscript, we provide an overview on the ultrasound-based hybrid technologies for the degradation of organic pollutants in an aqueous environment.

APA, Harvard, Vancouver, ISO, and other styles

13

Azadi, Mahak, Amir Hessam Hasani, Mohammad Ebrahim Olya, and Seyed Mehdi Borghei. "Application of ZnO-Ag-Nd nanocomposite as a new synthesized nanophotocatalyst for the degradation of organic compounds: kinetic, thermodynamic and economic study." Toxicology and Industrial Health 35, no. 1 (November 19, 2018): 1–10. http://dx.doi.org/10.1177/0748233718796720.

Full text

Abstract:

In the present research, a zinc oxide (ZnO)–silver (Ag)–neodymium (Nd) nanocomposite was synthesized via the combustion method for the degradation of dyes as organic pollutants. The synthesized nanophotocatalyst was characterized using X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy techniques. The process of organic pollutant (Acid Red 18) removal was carried out in a semi-batch photoreactor equipped with an ultraviolet lamp. Also, the influence of key operational parameters such as pH, temperature, initial concentration of solution, and nanophotocatalyst dosage was investigated to evaluate kinetic and thermodynamic properties. Under optimum process conditions (pH = 6.21, dosage of nanophotocatalyst = 0.08 g/l, and low initial concentration of the solution), degradation of pollutant was monitored by measuring the total organic carbon of the solution. Finally, an economic study showed that the photocatalytic advanced oxidation process is an viable treatment method for low concentrations of organic pollutants.

APA, Harvard, Vancouver, ISO, and other styles

14

Huang, Wenyu, Ying Huang, Shuangfei Wang, Hongfei Lin, and Gilles Mailhot. "Degradation of 2,4-Dichlorophenol by Ethylenediamine-N,N′-disuccinic Acid-Modified Photo-Fenton System: Effects of Chemical Compounds Present in Natural Waters." Processes 9, no. 1 (December 25, 2020): 29. http://dx.doi.org/10.3390/pr9010029.

Full text

Abstract:

This paper describes a study of the treatment of 2,4-dichlorophenol (2,4-DCP) with an ethylenediamine-N,N′-disuccinic-acid (EDDS)-modified photo-Fenton system in ultrapure water and different natural waters. The results showed that the EDDS-modified photo-Fenton system is adequate for 2,4-DCP degradation. Compared with a medium containing a single organic pollutant, the removal of pollutants in a more complex medium consisting of two organic compounds is slower by around 25 to 50% as a function of the organic pollutant. Moreover, 2,4-DCP can be further effectively degraded in the presence of organic materials and various inorganic ions. However, the photodegradation of 2,4-DCP in different natural waters, including natural lake water, effluent from domestic sewage treatment plants, and secondary effluent from pulp and paper mill wastewaters, is inhibited. Chemical compounds present in natural waters have different influences on the degradation of 2,4-DCP by adopting the EDDS-modified photo-Fenton system. In any case, the results obtained in this work show that the EDDS-modified photo-Fenton system can effectively degrade pollutants in a natural water body, which makes it a promising technology for treating pollutants in natural water bodies.

APA, Harvard, Vancouver, ISO, and other styles

15

Zhu, Jianyao, Zhiliang Zhu, Hua Zhang, Hongtao Lu, and Yanling Qiu. "Efficient degradation of organic pollutants by peroxymonosulfate activated with MgCuFe-layered double hydroxide." RSC Advances 9, no. 4 (2019): 2284–91. http://dx.doi.org/10.1039/c8ra09841g.

Full text

Abstract:

MgCuFe-layered double hydroxide exhibited high catalytic activity to activate peroxymonosulfate for degradation of organic pollutants. SO₄˙⁻ and ·OH are the main reactive radicals involved in the degradation of organic pollutants.

APA, Harvard, Vancouver, ISO, and other styles

16

Chatterjee, Debabrata, and Shimanti Dasgupta. "Visible light induced photocatalytic degradation of organic pollutants." Journal of Photochemistry and Photobiology C: Photochemistry Reviews 6, no. 2-3 (October 2005): 186–205. http://dx.doi.org/10.1016/j.jphotochemrev.2005.09.001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Gutierrez-Mata, A. G., S. Velazquez-Martínez, Alberto Álvarez-Gallegos, M. Ahmadi, José Alfredo Hernández-Pérez, F. Ghanbari, and S. Silva-Martínez. "Recent Overview of Solar Photocatalysis and Solar Photo-Fenton Processes for Wastewater Treatment." International Journal of Photoenergy 2017 (2017): 1–27. http://dx.doi.org/10.1155/2017/8528063.

Full text

Abstract:

This literature research, although not exhaustive, gives perspective to solar-driven photocatalysis, such as solar photo-Fenton and TiO2 solar photocatalysis, reported in the literature for the degradation of aqueous organic pollutants. Parameters that influence the degradation and mineralization of organics like catalyst preparation, type and load of catalyst, catalyst phase, pH, applied potential, and type of organic pollutant are addressed. Such parameters may also affect the photoactivity of the catalysts used in the studied solar processes. Solar irradiation is a renewable, abundant, and pollution-free energy source for low-cost commercial applications. Therefore, these solar processes represent an environmentally friendly alternative mainly because the use of electricity can be decreased/avoided.

APA, Harvard, Vancouver, ISO, and other styles

18

Papagiannis, Ioannis, Georgia Koutsikou, Zacharias Frontistis, Ioannis Konstantinou, George Avgouropoulos, Dionissios Mantzavinos, and Panagiotis Lianos. "Photoelectrocatalytic vs. Photocatalytic Degradation of Organic Water Born Pollutants." Catalysts 8, no. 10 (October 15, 2018): 455. http://dx.doi.org/10.3390/catal8100455.

Full text

Abstract:

The azo dye Basic Blue 41 was subjected to photocatalytic and photoelectrocatalytic degradation using nanopararticulate titania films deposited on either glass slides or Fluorine doped Tin Oxide (FTO) transparent electrodes. The degradation was carried out by irradiating titania films with weak ultraviolet (UVA) radiation. The degradation was faster when using FTO as a titania support even without bias and was further accelerated under forward electric bias. This result was explained by enhanced electron-hole separation even in the case of the unbiased titania/FTO combination. This system for organic material photocatalytic degradation was also successfully applied to the degradation of the anti-inflammatory drug piroxicam, which demonstrated a well distinguished degradation behavior in going from a plain glass support to unbiased and biased FTO. The degradation pathway of piroxicam has been additionally studied using liquid chromatography-accurate mass spectrometry analysis.

APA, Harvard, Vancouver, ISO, and other styles

19

Duan, Li Mei, Jing Hai Liu, Qing Yu Pang, Ling Xu, and Zong Rui Liu. "Efficient Sunlight Active Nanocomposite Photocatalyst for Degradation of Pollutant Organic Dyes." Advanced Materials Research 726-731 (August 2013): 650–53. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.650.

Full text

Abstract:

The sunlight activated photocatalysts are urgently needed for the applications of photocatalytic techniques to environmental pollutants removal. Herein, we report the one-step hydrothermally prepared CdS/TiO2 nanocomposite photocatalyst that is active in the degradation of pollutant organic dyes under solar light. The morphology and components are confirmed by TEM, SEM and XRD. With methylene blue (MB) as the model pollutant organic dye, the photocatalytic activity of CdS/TiO2 nanocomposite photocatalyst under sunlight is demonstrated, and 80% MB is removed after 120 minutes sunlight illumination. Besides, the influences of pH, the amount of photocatalyst and the addition of H2O2 on photocatalytic activity for the degradation of MB are also investigated to mimic water treatment process.

APA, Harvard, Vancouver, ISO, and other styles

20

Singh, Tripti, Neha Srivastava, P. K. Mishra, A. K. Bhatiya, and Nand Lal Singh. "Application of TiO₂ Nanoparticle in Photocatalytic Degradation of Organic Pollutants." Materials Science Forum 855 (May 2016): 20–32. http://dx.doi.org/10.4028/www.scientific.net/msf.855.20.

Full text

Abstract:

Heavy industrialization, specifically in the developing countries, has generated several unwanted environmental pollution. A variety of toxic organic compounds is produced in chemical and petroleum industries, which have resulted in collectively hazardous effects on the environment that needs immediate attention for remediation. Degradation of these pollutants has been tried through the various mechanism, out of which photocatalytic degradation seems to be one of the most promising approaches to reduce environmental pollution specifically in waste water treatment. Photocatalytic degradation has potential for the effective decomposition of organic pollutants due to efficiency to convert light energy into chemical energy. Additionally, the photocatalytic oxidation process is an advanced technique as it offers high degradation and effective mineralization at moderate temperature and specific radiation wavelength. Among various known photocatalysts, TiO2 is regarded as the one of the potential photocatalysts because of its hydrophilic property, high reactivity, reduced toxicity, chemical stability and lower costs. Therefore, the present chapter focuses on the role of TiO2 as the photocatalyst for the degradation of organic pollutants. The general mechanism of degradation of organic pollutants along with properties of TiO2 as the photocatalyst, existing mechanism of degradation via TiO2 was explained. The possible approaches to enhance degradation via TiO2 nanoparticle along with existing bottlenecks have been also discussed.

APA, Harvard, Vancouver, ISO, and other styles

21

Xu, Dong Ying, and Xi Wu Lv. "The Research of Degradation about 1,2,4-Trichlorobenzene by Microorganism on Different Experiment Condition." Applied Mechanics and Materials 178-181 (May 2012): 666–70. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.666.

Full text

Abstract:

Artificial media was used to enrich microbe and improve the water resource quality, therefore trace quantity organic pollutants of 1,2,4-Trichlorobenzene were biodegraded. The result of the experiment showed that, after domestication, the micro association enriched in the assembled medium could remove corresponding trace quantity organic pollutants in some concentration. When the temperature was 30 degree centigrade, the pH was between 6 and 9, the effect was the best about the removal on trace-quantity-organic pollutants water. A strain of bacteria was separated．At the same time, the congener trace quantity organic pollutants could be biodegraded. When the HRT was 6 days, the removal of trace quantity organic pollutants was between 70%～95%. It is evident that the trace quantity organic pollutants of 1,2,4-trichlorobenzene in the source water quality from Meiliang Bay in Taihu Lake can be well degraded by enriched microbes on the artificial media.

APA, Harvard, Vancouver, ISO, and other styles

22

Gnanaprakasam, A., V. M. Sivakumar, and M. Thirumarimurugan. "Influencing Parameters in the Photocatalytic Degradation of Organic Effluent via Nanometal Oxide Catalyst: A Review." Indian Journal of Materials Science 2015 (September 17, 2015): 1–16. http://dx.doi.org/10.1155/2015/601827.

Full text

Abstract:

This paper aims to review the recent works on the photocatalytic degradation of organic pollutants in the presence of nanophotocatalyst. In this regard the effects of operation parameters which could influence the photocatalytic degradation of organic pollutants (such as catalyst preparation method, initial concentration of organic pollutants, presence of doping, catalyst loading, calcinations temperature, pH, presence of oxidants, UV intensity, temperature, and presence of supports) are discussed. Recent research suggests that the parameters mentioned above have great influence on the photocatalytic activity of prepared nanocatalyst. Also, the general mechanism of photocatalytic degradation and some recent synthesis methods are discussed here.

APA, Harvard, Vancouver, ISO, and other styles

23

Barker, Allen V., and Gretchen M. Bryson. "Bioremediation of Heavy Metals and Organic Toxicants by Composting." Scientific World JOURNAL 2 (2002): 407–20. http://dx.doi.org/10.1100/tsw.2002.91.

Full text

Abstract:

Hazardous organic and metallic residues or by-products can enter into plants, soils, and sediments from processes associated with domestic, municipal, agricultural, industrial, and military activities. Handling, ingestion, application to land or other distributions of the contaminated materials into the environment might render harm to humans, livestock, wildlife, crops, or native plants. Considerable remediation of the hazardous wastes or contaminated plants, soils, and sediments can be accomplished by composting. High microbial diversity and activity during composting, due to the abundance of substrates in feedstocks, promotes degradation of xenobiotic organic compounds, such as pesticides, polycyclic aromatic hydrocarbons (PAHs), and polychlorinated biphenyls (PCBs). For composting of contaminated soils, noncontaminated organic matter should be cocomposted with the soils. Metallic pollutants are not degraded during composting but may be converted into organic combinations that have less bioavailability than mineral combinations of the metals. Degradation of organic contaminants in soils is facilitated by addition of composted or raw organic matter, thereby increasing the substrate levels for cometabolism of the contaminants. Similar to the composting of soils in vessels or piles, the on-site addition of organic matter to soils (sheet composting) accelerates degradation of organic pollutants and binds metallic pollutants. Recalcitrant materials, such as organochlorines, may not undergo degradation in composts or in soils, and the effects of forming organic complexes with metallic pollutants may be nonpermanent or short lived. The general conclusion is, however, that composting degrades or binds pollutants to innocuous levels or into innocuous compounds in the finished product.

APA, Harvard, Vancouver, ISO, and other styles

24

Peev, M., M. Schönerklee, and H. De Wever. "Modelling the degradation of low concentration pollutants in membrane bioreactors." Water Science and Technology 50, no. 5 (September 1, 2004): 209–18. http://dx.doi.org/10.2166/wst.2004.0330.

Full text

Abstract:

This paper deals with the development of a description of membrane bioreactor systems, focussing on wastewater treatment and removal of specific low concentration persistent organic pollutants (e.g. persistent polar pollutants - P3 compounds). In the present work we offer a basic model, adapted to Membrane Bioreactor (MBR) conditions, which reflects the biodegradation of recalcitrant (organic) substances. We put a particular focus on organic aromatic pollutants and demonstrate a model parameter estimation approach, with experiments carried out for linear alkylbenzene sulphonates (LAS).

APA, Harvard, Vancouver, ISO, and other styles

25

Comparelli, Roberto. "Special Issue: Application of Photoactive Nanomaterials in Degradation of Pollutants." Materials 12, no. 15 (August 2, 2019): 2459. http://dx.doi.org/10.3390/ma12152459.

Full text

Abstract:

Photoactive nanomaterials are receiving increasing attention due to their potential application to light-driven degradation of water and gas-phase pollutants. However, to exploit the strong potential of photoactive materials and access their properties require a fine tuning of their size/shape dependent chemical-physical properties and on the ability to integrate them in photo-reactors or to deposit them on large surfaces. Therefore, the synthetic approach, as well as post-synthesis manipulation could strongly affect the final photocatalytic properties of nanomaterials. The potential application of photoactive nanomaterials in the environmental field includes the abatement of organic pollutant in water, water disinfection, and abatement of gas-phase pollutants in outdoor and indoor applications.

APA, Harvard, Vancouver, ISO, and other styles

26

Tan, Yong Nian, Chung Leng Wong, and Abdul Rahman Mohamed. "An Overview on the Photocatalytic Activity of Nano-Doped-TiO2 in the Degradation of Organic Pollutants." ISRN Materials Science 2011 (December 12, 2011): 1–18. http://dx.doi.org/10.5402/2011/261219.

Full text

Abstract:

This paper aims to review and summarize the recent works on the photocatalytic degradation of various organic pollutants in the presence of nano-doped-TiO2 photocatalysts. In this regard, three main aspects are examined: (a) the presence of various dopants (metal dopants, nonmetal dopants, halogen dopants, metalloid dopants, and codopants) in the formation of nano-doped-TiO2 photocatalysts, (b) the effect of the presence of dopants on the photocatalytic degradation of organic pollutants, and (c) the effects of various operating parameters on the photocatalytic degradation of organic pollutants in the presence of nano-doped-TiO2 photocatalysts. Reports resulted suggest that the formation of a high percentage of the anatase phase, small crystallite size, and high specific surface area of the nano-doped-TiO2 photocatalysts depends on the presence of various dopants in the photocatalysts. The majority of the dopants have the potential to improve the photocatalytic efficiency of nano-doped-TiO2 in the degradation of organic pollutants. The photocatalytic degradation of organic compounds depends on the calcination temperature of the prepared doped TiO2, initial reactant concentration, dosage of doped TiO2, and dopant doping concentration.

APA, Harvard, Vancouver, ISO, and other styles

27

Khalid, Farah Eryssa, Zheng Syuen Lim, Suriana Sabri, Claudio Gomez-Fuentes, Azham Zulkharnain, and Siti Aqlima Ahmad. "Bioremediation of Diesel Contaminated Marine Water by Bacteria: A Review and Bibliometric Analysis." Journal of Marine Science and Engineering 9, no. 2 (February 3, 2021): 155. http://dx.doi.org/10.3390/jmse9020155.

Full text

Abstract:

Oil pollution can cause tremendous harm and risk to the water ecosystem and organisms due to the relatively recalcitrant hydrocarbon compounds. The current chemical method used to treat the ecosystem polluted with diesel is incompetent and expensive for a large-scale treatment. Thus, bioremediation technique seems urgent and requires more attention to solve the existing environmental problems. Biological agents, including microorganisms, carry out the biodegradation process where organic pollutants are mineralized into water, carbon dioxide, and less toxic compounds. Hydrocarbon-degrading bacteria are ubiquitous in the nature and often exploited for their specialty to bioremediate the oil-polluted area. The capability of these bacteria to utilize hydrocarbon compounds as a carbon source is the main reason behind their species exploitation. Recently, microbial remediation by halophilic bacteria has received many positive feedbacks as an efficient pollutant degrader. These halophilic bacteria are also considered as suitable candidates for bioremediation in hypersaline environments. However, only a few microbial species have been isolated with limited available information on the biodegradation of organic pollutants by halophilic bacteria. The fundamental aspect for successful bioremediation includes selecting appropriate microbes with a high capability of pollutant degradation. Therefore, high salinity bacteria are remarkable microbes for diesel degradation. This paper provides an updated overview of diesel hydrocarbon degradation, the effects of oil spills on the environment and living organisms, and the potential role of high salinity bacteria to decontaminate the organic pollutants in the water environment.

APA, Harvard, Vancouver, ISO, and other styles

28

Hou, Xiaojing, Xiaopeng Huang, Falong Jia, Zhihui Ai, Jincai Zhao, and Lizhi Zhang. "Hydroxylamine Promoted Goethite Surface Fenton Degradation of Organic Pollutants." Environmental Science & Technology 51, no. 9 (April 11, 2017): 5118–26. http://dx.doi.org/10.1021/acs.est.6b05906.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

LI, X., J. YAO, and J. QI. "Degradation of Organic Pollutants in Water by Catalytic Ozonation." Chemical Research in Chinese Universities 23, no. 3 (May 2007): 273–75. http://dx.doi.org/10.1016/s1005-9040(07)60058-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Preethi V, Raja, Sangeeth John, Gopalkrishna Bhalerao, Bhavana Gupta, Jaspreet Singh, and Shubra Singh. "Photoactive brownmillerite Ba2In2O5 for photocatalytic degradation of organic pollutants." Solid State Sciences 109 (November 2020): 106450. http://dx.doi.org/10.1016/j.solidstatesciences.2020.106450.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Mazzarino, Italo, Paola Piccinini, and Luca Spinelli. "Degradation of organic pollutants in water by photochemical reactors." Catalysis Today 48, no. 1-4 (January 1999): 315–21. http://dx.doi.org/10.1016/s0920-5861(98)00387-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Kim, Soo-Myung, and Alfons Vogelpohl. "Degradation of Organic Pollutants by the Photo-Fenton-Process." Chemical Engineering & Technology 21, no. 2 (February 1998): 187–91. http://dx.doi.org/10.1002/(sici)1521-4125(199802)21:2<187::aid-ceat187>3.0.co;2-h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Zhao, Jincai, Chuncheng Chen, and Wanhong Ma. "Photocatalytic Degradation of Organic Pollutants Under Visible Light Irradiation." Topics in Catalysis 35, no. 3-4 (July 2005): 269–78. http://dx.doi.org/10.1007/s11244-005-3834-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Krýsa, Josef, Martin Keppert, Georg Waldner, and Jaromír Jirkovský. "Immobilized particulate TiO2 photocatalysts for degradation of organic pollutants." Electrochimica Acta 50, no. 25-26 (September 2005): 5255–60. http://dx.doi.org/10.1016/j.electacta.2005.01.054.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Margha, Fatma H., Mohamed E. M. Ali, and Tarek A. Gad-Allah. "Transparent Nanocrystalline Glass-Ceramic System for Organic Pollutants Degradation." Silicon 10, no. 1 (April 6, 2016): 123–29. http://dx.doi.org/10.1007/s12633-015-9384-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Ying, Yulong, Tao Song, Hongwen Huang, and Xinsheng Peng. "Nanoporous ZnO nanostructures for photocatalytic degradation of organic pollutants." Applied Physics A 110, no. 2 (October 12, 2012): 351–59. http://dx.doi.org/10.1007/s00339-012-7273-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Pelizzetti, Ezio, Edmondo Pramauro, C. Minero, and Nick Serpone. "Sunlight photocatalytic degradation of organic pollutants in aquatic systems." Waste Management 10, no. 1 (January 1990): 65–71. http://dx.doi.org/10.1016/0956-053x(90)90071-r.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Hesselsoe, Martin, Susanne Boysen, Niels Iversen, Lars J�rgensen, J. Colin Murrell, Ian McDonald, Stefan Radajewski, Helle Thestrup, and Peter Roslev. "Degradation of organic pollutants by methane grown microbial consortia." Biodegradation 16, no. 5 (October 2005): 435–48. http://dx.doi.org/10.1007/s10532-004-4721-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Sivasankar, Thirugnanasambandam, and Vijayanand S. Moholkar. "Mechanistic features of the sonochemical degradation of organic pollutants." AIChE Journal 54, no. 8 (August 2008): 2206–19. http://dx.doi.org/10.1002/aic.11550.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Lan, Jin, Yu Wang, Bo Huang, Zicheng Xiao, and Pingfan Wu. "Application of polyoxometalates in photocatalytic degradation of organic pollutants." Nanoscale Advances 3, no. 16 (2021): 4646–58. http://dx.doi.org/10.1039/d1na00408e.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Wang, Hao, Dengling Jiang, Yong Yang, and Guoping Cao. "Analysis of chemical reaction kinetics of depredating organic pollutants from secondary effluent of wastewater treatment plant in constructed wetlands." Water Science and Technology 67, no. 2 (January 1, 2013): 353–58. http://dx.doi.org/10.2166/wst.2012.521.

Full text

Abstract:

Four subsurface constructed wetlands were built to treat the secondary effluent of a wastewater treatment plant in Tangshan, China. The chemical pollutant indexes of chemical oxygen demand (COD) were analyzed to evaluate the removal efficiency of organic pollutants from the secondary effluent of the wastewater treatment plant. In all cases, the subsurface constructed wetlands were efficient in treating organic pollutants. Under the same hydraulic loading condition, the horizontal flow wetlands exhibited better efficiency of COD removal than vertical flow wetlands: the removal rates in horizontal flow wetlands could be maintained at 68.4 ± 2.42% to 92.2 ± 1.61%, compared with 63.8 ± 1.19% to 85.0 ± 1.25% in the vertical flow wetlands. Meanwhile, the chemical reaction kinetics of organic pollutants was analyzed, and the results showed that the degradation courses of the four subsurface wetlands all corresponded with the first order reaction kinetics to a large extent.

APA, Harvard, Vancouver, ISO, and other styles

42

Liu, C. S., L. J. Zhang, C. H. Feng, C. A. Wu, F. B. Li, and X. Z. Li. "Relationship between oxidative degradation of 2-mercaptobenzothiazole and physicochemical properties of manganese (hydro)oxides." Environmental Chemistry 6, no. 1 (2009): 83. http://dx.doi.org/10.1071/en08053.

Full text

Abstract:

Environmental context. Manganese (hydro)oxide is one kind of the most important natural minerals that are capable of oxidising organic contaminants with a wide range of functionality. However, the oxidative reactivity of manganese (hydro)oxides for organic pollutant degradation may depend on their individual physicochemical properties. It is important to determine a relationship between their oxidative reactivity and physicochemical properties. Abstract. The oxidative reactivity of manganese (hydro)oxides is important for geochemical transformation of organic pollutants. Here, 2-mercaptobenzothiazole (MBT) degradation by six manganese (hydro)oxides, including γ-MnOOH, β-MnO2, α-MnO2, γ-Mn2O3, δ-MnO2, and MO-700, were investigated with different initial MBT concentrations, manganese (hydro)oxide dosages and pH values. The results show the oxidative reactivity of manganese (hydro)oxides towards MBT degradation strongly depends on their physicochemical properties. Specific surface area and reduction potential of manganese (hydro)oxides were positively correlated with MBT degradation rates, whereas pH at the point of zero charge (pHPZC) of manganese (hydro)oxides and apparent activation energy (Ea) were negatively correlated. A high average oxidation state with the same chemical valence always corresponds to high oxidative reactivity. Such findings provide some insights into understanding the transport and fate of organic pollutants in the presence of different manganese (hydro)oxides in the natural environment.

APA, Harvard, Vancouver, ISO, and other styles

43

SHAH, ZARBAD, TOFAIL ARSHAD, KAUSAR SHAHEEN, SHER BAHADAR KHAN, SYED MUHAMMAD SALMAN, and ALA UDDIN. "RECENT AND FUTURE PROSPECTIVE OF VARIOUS PHOTO-CATALYSTS FOR ENVIRONMENTAL POLLUTION AND ENERGY PRODUCTION: A REVIEW." Surface Review and Letters 28, no. 09 (May 7, 2021): 2130002. http://dx.doi.org/10.1142/s0218625x21300021.

Full text

Abstract:

Photo-catalysis has shown a prominent and effective role for the degradation of textile dyes and organic compounds on large scale to keep environment and water reservoirs clean and usable. Photo-catalysts produce hydrogen through water splitting which is an eco-friendly source of renewable energy. Photo-catalysts are used for solar cells construction. Photo-catalysis generates an electron–hole (e−–h[Formula: see text] pair due to light interaction. The electron–hole (e−–h[Formula: see text] pair produces ⋅OH and O[Formula: see text], which play the main role in degradation process; it leads to redox reaction and oxidizes organic pollutants to H2O and CO2. Major causes of water, air and soil pollution are organic pollutants, heavy metals and non-biodegradable dyes released by different industries. These pollutants especially phenols and dyes have seriously affected the water reservoirs. This paper gives a critical review on visible and solar light photo-catalysis and techniques used for the photo-degradation of hazardous pollutants. A systematic study has been carried out from the published literature on photo-degradation of organic pollutants, factors effecting the photo-degradation and the various operating parameters. The role of semiconductors/nano-catalysts for eco-friendly renewable energy sources, such as hydrogen and solar cells production is also elaborated for future energy crises. The published data has shown that different parameters, such as pH of the system, light intensity, catalyst amount, initial concentration and amount of photo-catalysts play a crucial role for the degradation of various dyes and organic pollutants. Photo-catalysis has also shown significant results for remediation of volatile organic pollutants and acid gases from air. This review has focused to find an efficient, low cost and result oriented photo-catalyst and the effective environment for reaction. The concluded data has shown that photo-catalysis is economically suitable and fit for the treatment of waste water, industrial effluents and energy production.

APA, Harvard, Vancouver, ISO, and other styles

44

Qian, Yuhang, and Dongge Ma. "Covalent Organic Frameworks: New Materials Platform for Photocatalytic Degradation of Aqueous Pollutants." Materials 14, no. 19 (September 27, 2021): 5600. http://dx.doi.org/10.3390/ma14195600.

Full text

Abstract:

Covalent organic frameworks (COFs) are highly porous and crystalline polymeric materials, constructed by covalent bonds and extending in two or threedimensions. After the discovery of the first COF materials in 2005 by Yaghi et al., COFs have experienced exciting progress and exhibitedtheirpromising potential applications invarious fields, such as gas adsorption and separation, energy storage, optoelectronics, sensing and catalysis. Because of their tunablestructures, abundant, regular and customizable pores in addition to large specific surface area, COFs can harvest ultraviolet, visible and near-infrared photons, adsorb a large amount of substrates in internal structures and initiate surface redox reactions to act as effective organic photocatalysts for water splitting, CO2 reduction, organic transformations and pollutant degradation. In this review, we will discuss COF photocatalysts for the degradation of aqueous pollutants. The state-of-the-art paragon examples in this research area will be discussed according to the different structural type of COF photocatalysts. The degradation mechanism will be emphasized. Furthermore, the future development direction, challenges required to be overcome and the perspective in this field will be summarized in the conclusion.

APA, Harvard, Vancouver, ISO, and other styles

45

Lin, Mei Jiao, Min Song, and Xue You Shen. "Photocatalyst TiO₂ Supported on Bentonite for Water Organic Pollutants Purification: A Literature Review." Advanced Materials Research 463-464 (February 2012): 967–74. http://dx.doi.org/10.4028/www.scientific.net/amr.463-464.967.

Full text

Abstract:

Photocatalytic degradation of waste pollutants using TiO2is a promising technology. Recently, the use of bentonite for the removal of organic pollutants was widely studied because of large specific surface areas. Studies have shown that TiO2supported on bentonite, or TiO2/bentonite composite, exhibits bifunctionality of adsorption and photo catalysis in synergism. This paperpresents a literature review of the preparation and modification techniques of bentonite/TiO2composite photocatalyst, and their characteristics. The review will also focus on the current researches on the degradation of water organic pollutants by using bentonite/TiO2composite photocatalyst and its key influencing factors.

APA, Harvard, Vancouver, ISO, and other styles

46

Xu, Dong-ying. "The Research of Degradation about 1,2,4-Trichlorobenzene by the Artificial Media in Microbe Enrichment." Advances in Materials Science and Engineering 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/739693.

Full text

Abstract:

Artificial media were used to enrich microbe and improve the water resource quality; therefore trace quantity organic pollutants of 1,2,4-trichlorobenzene were biodegraded. The result of the test showed that, after domestication, the microassociation enriched in the assembled medium could remove corresponding trace quantity organic pollutants in some concentration. When the temperature was 30 degree centigrade, and the pH was between 6 and 9, the effect about the removal on trace-quantity-organic pollutants water was the best. A strain of bacteria that could degrade 1,2,4-trichlorobenzene was separated, and its degradation mechanism to 1,2,4-trichlorobenzene was studied. At the same time, the congener trace quantity organic pollutants could be biodegraded. Biofilm after domestication can effectively degrade a certain concentration range of three trichlorobenzenes and the removal effect of HRT = 7 d was better than the removal effect of HRT = 5 d. It is evident that the trace quantity organic pollutants of 1,2,4-trichlorobenzene in the source water quality from Meiliang Bay in Taihu Lake can be well degraded by enriched microbes on the artificial media.

APA, Harvard, Vancouver, ISO, and other styles

47

Zhang, Xi, Jing Wang, Xing-Xing Dong, and Yun-Kai Lv. "Functionalized metal-organic frameworks for photocatalytic degradation of organic pollutants in environment." Chemosphere 242 (March 2020): 125144. http://dx.doi.org/10.1016/j.chemosphere.2019.125144.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Wang, Tian-Xiong, Hai-Peng Liang, Dejene Assefa Anito, Xuesong Ding, and Bao-Hang Han. "Emerging applications of porous organic polymers in visible-light photocatalysis." Journal of Materials Chemistry A 8, no. 15 (2020): 7003–34. http://dx.doi.org/10.1039/d0ta00364f.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Hu, Ge, Shu Ai Peng, and Wei Wang. "Numerical Simulation for Migration of the Pollutants in Soil." Advanced Materials Research 113-116 (June 2010): 1684–87. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.1684.

Full text

Abstract:

In the soil environment，through analyzing the numerical solutions of pollutant migration, the time-space law of the transmission of organic pollutants in soil can be mastered, which has both theoretical and practical significance. The general mathematical model of the migration of volatile pollutant in soil was established; and typical models of pollution sources emission were calculated, and the influence of various parameters in model on calculation results were compared, such as diffusion, convection, adsorption and degradation parameters; finally a correlation analysis and discussion was made on calculation results of the pollutant concentration distribution. The calculation results show that the convection is the main reason causing pollutants migration, and the influence of volatility to migration process cannot be ignored. It provides the scientific basis and approach for the pollution forecasting and prevention.

APA, Harvard, Vancouver, ISO, and other styles

50

Lahnsteiner, J., and R. Vranitzky. "Ozone treatment of organic micro-pollutants in sewage sludge." Water Science and Technology 61, no. 11 (June 1, 2010): 2923–30. http://dx.doi.org/10.2166/wst.2010.224.

Full text

Abstract:

Organic micro-pollutants accumulate to a certain extent in sewage sludge and are therefore ecologically relevant if the sludge is to be reused in both agriculture and landscaping applications. This paper describes the degradation of endocrine-disrupting compounds and other micro-contaminants by means of ozone and ultrasonic treatment. One of the findings is that, as expected, aromatic compounds such as polycyclic aromatic hydrocarbons can be degraded easily by ozone. Thus it could be shown that, apart from enhanced VSS reduction and increased biogas production, sludge disintegration processes using ozone provide an additional benefit, i.e. the degradation of micro-pollutants, which is practically unattainable with ultrasonic treatment.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!