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https://www.readbyqxmd.com/read/30535545/removal-of-pollutants-cod-tss-and-no-3-from-textile-effluent-using-gambusia-fish-and-phragmites-australis-in-constructed-wetlands
#1
Nasim Saharimoghaddam, Mohamadreza Massoudinejad, Mansour Ghaderpoori
In developing countries, the discharge of polluted effluents into the environment has caused environmental problems. For this purpose, constructed wetlands are attracting great concern owing to their low cost and less operation and maintenance requirements. The main aim of this work was to study the effectiveness of constructed wetlands utilizing Phragmites australis plants and Gambusia fish in the treatment of textile effluent. The constructed wetlands are located in the eastern part of a wastewater treatment plant near a grit chamber unit...
December 7, 2018: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/30517064/unraveling-the-characteristics-of-a-heteropolysaccharide-protein-from-an-haloarchaeal-strain-with-flocculation-effectiveness-in-heavy-metals-and-dyes-removal
#2
Habib Chouchane, Afef Najjari, Mohamed Neifar, Hanen Cherif, Refka Askri, Fatma Naili, Hadda Imene Ouzari, Ameur Cherif
The production, characterization and potential application in heavy metals and dyes removal of a novel heteropolysaccharide-protein named, gpHb, produced by an haloarchaeal strain Halogeometricum borinquense strain A52 were investigated. The highest gpHb yield of 13.96 ± 0.32 g/L was produced under optimized conditions by response surface methodology. We focused on the characteristics and flocculation performance of gpHb. An important attribute of protein with 16 protein types identified that occupied a total content of 50...
December 5, 2018: Environmental Technology
https://www.readbyqxmd.com/read/30502706/occurrence-composition-profiles-and-risk-assessment-of-polycyclic-aromatic-hydrocarbons-in-municipal-sewage-sludge-in-china
#3
Shao-Jing Sun, Ze-Bin Zhao, Bo Li, Li-Xin Ma, Dong-Lei Fu, Xia-Zhong Sun, Samit Thapa, Ji-Min Shen, Hong Qi, Yi-Ning Wu
A nationwide survey, including 75 sludge samples and 18 wastewater samples taken from different wastewater treatment plants (WWTPs) from 23 cities, was carried out to investigate the occurrence and composition profiles of polycyclic aromatic hydrocarbons (PAHs) in China. In total, the concentrations of ∑16 PAHs in sludge ranged from 565 to 280,000 ng/g (mean: 9340 ng/g) which was at a moderate level in the world. The composition profiles of PAHs were characterized by 3- and 4-ring PAHs in textile dyeing sludge and 4- and 5-ring PAHs in domestic sludge...
November 25, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/30465830/isolation-cloning-and-characterization-of-an-azoreductase-and-the-effect-of-salinity-on-its-expression-in-a-halophilic-bacterium
#4
Fang Tian, Guang Guo, Can Zhang, Feng Yang, Zhixin Hu, Chong Liu, Shi-Wei Wang
Understanding the molecular mechanisms of azo dye decolorization is important for the development of effective bioremediation for textile-colored wastewater. A halophilic bacterium Halomonas sp. strain GT was isolated, which could degrade the azo dye Acid Brilliant Scarlet GR at 10% NaCl. The complete genome sequence of this strain was obtained using the PacBio RS II platform. Genome annotation revealed that four proteins are related to decolorization of azo dyes, such as azoreductase, laccases, benzene 1,2-dioxygenase, and catechol 1,2-dioxygenase...
November 19, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/30456251/data-on-bioassay-of-toxicity-reduction-of-treated-textile-wastewater-by-using-nanophotocatalytic-process-by-daphnia-magna
#5
Marjan Ghanbarian, A H Mahvi, Maryam Ghanbarian
Practicability and possibility of photocatalytic degradation of Ro16 textile dye and the actual wastewater of textile were studied on pilot scale. The amount of reduction in solution toxicity was studied and assessed by the application of a bioassay using Daphnia magna . The solution toxicity at the beginning of the process has an increasing procedure and this is caused by the intermediate products that are produced during the photocatalytic process from the mother compounds, and are more toxic compared to them, and their toxicity declines at the end of the process with the completion of mineralization...
December 2018: Data in Brief
https://www.readbyqxmd.com/read/30416980/evaluation-of-gradual-adaptation-of-mixed-microalgae-consortia-cultivation-using-textile-wastewater-via-fed-batch-operation
#6
Gopalakrishnan Kumar, Menghour Huy, Péter Bakonyi, Katalin Bélafi-Bakó, Sang-Hyoun Kim
This study investigated mixed microalgae consortia cultivation in a fed batch reactor using textile wastewater. The results showed 95% of total phosphorus (TP) and 70% of total nitrogen (TN) depletion during the operational period. Algal biomass growth, pollutant removal, and biomass constituents were examined for five cycles of the fed batch operation. The length of the cycles decreased from 30 days to 10 days as the cycle repeated, which implied gradual adaptation of microalgae to textile wastewater. Color of textile wastewater was removed in the range of 68-72% in all the cycles experimented...
December 2018: Biotechnology Reports
https://www.readbyqxmd.com/read/30391863/how-does-iron-facilitate-the-aerated-biofilter-for-tertiary-simultaneous-nutrient-and-refractory-organics-removal-from-real-dyeing-wastewater
#7
Hong Chen, Yunfan Liu, Xiaoqiang Xu, Min Sun, Mingji Jiang, Gang Xue, Xiang Li, Zhenhong Liu
Textile dyeing wastewater is characterized by low biodegradability and high nitrogen strength, which is difficult to meet the increasingly stringent discharge requirements. Therefore, the tertiary nutrient and refractory organics removal is considered and aerated biofilter is often adopted. However, the aerobic condition and carbon source shortage restrict tertiary biological nitrogen removal. In this study, iron scrap was introduced as the filter medium to enhance the pollutant removal capacity, and three aerobic biofilters were constructed...
October 23, 2018: Water Research
https://www.readbyqxmd.com/read/30390592/identification-of-textile-wastewater-in-water-bodies-by-fluorescence-excitation-emission-matrix-parallel-factor-analysis-and-high-performance-size-exclusion-chromatography
#8
Bo Liu, Jing Wu, Cheng Cheng, Jiukai Tang, Muhammad Farooq Saleem Khan, Jian Shen
Identifying the causes of water body pollution is critical because of the serious water contamination in developing countries. The textile industry is a major contributor to severe water pollution due to its high discharge of wastewater with high concentrations of organic and inorganic pollutants. In this study, fluorescence excitation emission matrix-parallel factor (EEM-PARAFAC) analysis was applied to characterize textile industry wastewater and trace its presence in water bodies. The EEM spectra of textile wastewater samples collected from 12 wastewater treatment plants (WWTPs) revealed two characteristic peaks: Peak T1 (tryptophan-like region) and Peak B (tyrosine-like region)...
February 2019: Chemosphere
https://www.readbyqxmd.com/read/30382411/influence-of-different-textile-fibers-on-characterization-of-dyeing-wastewater-and-final-effluent
#9
Renan Felinto Dos Santos, Heloisa Ramlow, Neseli Dolzan, Ricardo Antonio Francisco Machado, Catia Rosana Lange de Aguiar, Cintia Marangoni
Textile industry needs to recover and reuse its wastewater as to fulfil the demand of increasingly strict regulations. The characterization of dyeing wastewater samples according to textile fiber and final textile effluent enables the application of different treatment methods. This study aims to characterize dyeing wastewater in black color of polyamide, polyester, and viscose fibers and final textile effluent. Samples were collected and characterized completely for major pollution indicator parameters. Dyeing wastewater of polyester showed higher values for some parameters, e...
October 31, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/30374618/recent-advances-in-anaerobic-biological-processes-for-textile-printing-and-dyeing-wastewater-treatment-a-mini-review
#10
REVIEW
Hui Xu, Bo Yang, Yanbiao Liu, Fang Li, Chensi Shen, Chunyan Ma, Qing Tian, Xinshan Song, Wolfgang Sand
Textile printing and dyeing wastewater is usually characterized by high pH, high turbidity, poor bio-degradability, complex composition, and high chrominance, and is discharged in large amounts. It has been regarded as one of the hardest to treat forms of industrial wastewater. Conventional physicochemical technologies can remove these contaminants from water bodies, but at the expense of high energy consumption and high cost. Alternatively, biological processes with limited energy consumption, low cost and high efficiency are considered as promising technologies...
October 29, 2018: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/30366272/hydroxamic-acid-mediated-heterogeneous-fenton-like-catalysts-for-the-efficient-removal-of-acid-red-88-textile-wastewater-and-their-phytotoxicity-studies
#11
Rijuta Ganesh Saratale, Silojah Sivapathan, Ganesh Dattatraya Saratale, J Rajesh Banu, Dong-Su Kim
Heterogeneous Fenton-like catalyst and its industrial application are increasingly given importance for its non-selective mineralization of organic pollutants in broad pH range. Current study, utilized an aromatic hydroxamic acid derivative 2-hydroxypyridine-N-oxide (HpO), for the construction of iron-Hpo ligand catalyst supported on granular activated carbon (GAC). 8-Hydroxyquinoline and citric acid as non-hydroxamic aromatic and aliphatic Fenton-like catalysts were used for comparative evaluation of the efficiency with targeted catalyst (iron-HpO-GAC)...
October 23, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/30346735/degradation-and-mineralization-of-carbamazepine-using-an-electro-fenton-reaction-catalyzed-by-magnetite-nanoparticles-fixed-on-an-electrocatalytic-carbon-fiber-textile-cathode
#12
Kai Liu, Joseph Che-Chin Yu, Heng Dong, Jeffrey C S Wu, Michael R Hoffmann
Pharmaceutical wastes are considered to be important pollutants even at low concentrations. In this regard, carbamazepine has received significant attention due to its negative effect on both ecosystem and human health. However, the need for acidic conditions severely hinders the use of conventional Fenton reagent reactions for the control and elimination of carbamazepine in wastewater effluents and drinking water influents. Herein, we report of the synthesis and use of flexible bifunctional nanoelectrocatalytic textile materials, Fe3 O4 -NP@CNF, for the effective degradation and complete mineralization of carbamazepine in water...
October 22, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/30325273/development-of-dewatering-textile-materials-incorporating-slit-pore-geometries
#13
Kurt Westhaver, Morgan J Archer, Melissa Cusack-Striepe, Roozbeh Mafi, Emanuel Ausch, David R Latulippe
The use of engineering textile materials has emerged as a viable alternative to conventional methods of sludge dewatering in numerous application areas including municipal wastewater, mining, and pulp and paper. Previous studies have focused on the development of empirical ratios between dewatering performance and the porous properties of the textile material, the challenge is that the latter is difficult to characterize using currently available techniques. In this study, a series of dewatering filters were produced using advanced microfabrication techniques to create well-defined slit-pore geometries; a full-factorial design-of-experiments was employed to evaluate the effects of slit-pore dimensions and slit-pore spacing on the cake layer development and overall dewatering performance in constant-rate dewatering tests with municipal digestate that had been pre-treated with a commercial polymer flocculant...
October 16, 2018: Environmental Technology
https://www.readbyqxmd.com/read/30305994/enzymatic-detoxification-of-azo-dyes-by-a-multifarious-bacillus-sp-strain-mr-1-2-bearing-plant-growth-promoting-characteristics
#14
Muhammad Shahid, Faisal Mahmood, Sabir Hussain, Tanvir Shahzad, Muhammad Zulqarnain Haider, Muhammad Noman, Aqsa Mushtaq, Qundeel Fatima, Temoor Ahmed, Ghulam Mustafa
This study was conducted to elucidate the inherent potential of Bacillus sp. MR-1/2, which was isolated from root zone of maize crop grown on a textile wastewater-irrigated soil. The isolated strain was identified through its ribosomal RNA sequence. Under in vitro conditions, the strain demonstrated its tolerance for high concentrations of various heavy metal ions as determined by minimum inhibitory concentration. Moreover, the strain MR-1/2 exhibited many important phytobeneficial traits such as inorganic P solubilization and 1-aminocyclopropane-1-carboxylate (ACC) deaminase ability even under high metal and salt stress...
October 2018: 3 Biotech
https://www.readbyqxmd.com/read/30295128/a-highly-stable-laccase-from-bacillus-subtilis-strain-r5-gene-cloning-and-characterization
#15
Saadia Basheer, Naeem Rashid, Muhammad Sohail Akram, Muhammad Akhtar
The gene encoding copper-dependent laccase from Bacillus subtilis strain R5 was cloned and expressed in Escherichia coli. Initially the recombinant protein was produced in insoluble form as inclusion bodies. Successful attempts were made to produce the recombinant protein in soluble and active form. The laccase activity of the recombinant protein was highly dependent on the presence of copper ions in the growth medium and microaerobic conditions during protein production. The purified enzyme exhibited highest activity at 55 °C and pH 7...
October 8, 2018: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/30279571/surfactant-organic-solvent-free-single-step-engineering-of-hybrid-graphene-pt-tio-2-nanostructure-efficient-photocatalytic-system-for-the-treatment-of-wastewater-coming-from-textile-industries
#16
Zafar Khan Ghouri, Khaled Elsaid, Ahmed Abdala, Saeed Al-Meer, Nasser A M Barakat
In this study, hybrid graphene-Pt/TiO2 nanostructure were synthesized by single-step, inexpensive and surfactant/organic solvent free route; hydrothermal technique. The physicochemical properties of hybrid graphene-Pt/TiO2 nanostructure were carefully analyzed by multiple techniques, including X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscope (FESEM) and transmission electron microscope (TEM). The synthesized hybrid nanostructures were utilized as photocatalyst for the degradation of methylene blue (MB) dye under natural environment at average ambient temperature and mean daily global solar radiation, of about 22-25 °C and 374...
October 2, 2018: Scientific Reports
https://www.readbyqxmd.com/read/30257090/rightsizing-nanochannels-in-reduced-graphene-oxide-membranes-by-solvating-for-dye-desalination
#17
Liang Huang, Suting Huang, Surendar R Venna, Haiqing Lin
Membranes with high water permeance, near-zero rejection to inorganic salts (such as NaCl and Na2SO4), and almost 100% rejection to organic dyes are of great interest for the dye desalination (the separation of dyes and salts) of textile wastewater. Herein, we prepared reduced graphene oxide membranes in a solvation state (S-rGO) with nanochannel sizes rightly between the salt ions and dye molecules. The S-rGO membrane rejects >99.0% of Direct Red 80 (DR 80) and has almost zero rejection for Na2SO4. By contrast, conventional GO or rGO membranes often have the channel sizes smaller than divalent ions (such as SO42-) and thus high rejection for Na2SO4...
September 26, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/30245411/optimization-and-toxicity-assessment-of-a-combined-electrocoagulation-h-2-o-2-fe-2-uv-and-activated-carbon-adsorption-for-textile-wastewater-treatment
#18
Edison GilPavas, Izabela Dobrosz-Gómez, Miguel-Ángel Gómez-García
In this study, the potential application of sequential Electrocoagulation + Fenton (F) or Photo-Fenton (PF) + Active carbon adsorption (EC + F/PF + AC) processes were analyzed as alternatives for the treatment of an industrial textile wastewater resulting from an industrial facility located in Medellín (Colombia). In order to maximize the organic matter degradation, each step of the treatment was optimized using the Response Surface Methodology. At first, the optimal performance of EC was achieved with Fe electrodes operating at pH = 7, jEC  = 10 mA/cm2 and 60 rpm, during 10 min of electrolysis...
February 15, 2019: Science of the Total Environment
https://www.readbyqxmd.com/read/30245294/toxicity-evaluation-of-textile-dyeing-effluent-and-its-possible-relationship-with-chemical-oxygen-demand
#19
Jieying Liang, Xun-An Ning, Jian Sun, Jian Song, Jie Lu, Haili Cai, Yanxiang Hong
Textile dyeing wastewater was the focus of much research because of its adverse effect on aquatic biota. In the present research, textile dyeing influent and effluent samples were collected from four textile dyeing wastewater treatment plants (TDPs) in Guangdong province, China, and their conventional indicators and toxicity were examined to reveal relationships. The relationship between toxicity and chemical oxygen demand (COD) was clearly established at individual TDPs. Results indicated the highest removal efficiencies of 94...
September 21, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/30240998/removal-of-micropollutants-from-water-in-a-continuous-flow-electrical-discharge-reactor
#20
Niels Wardenier, Patrick Vanraes, Anton Nikiforov, Stijn W H Van Hulle, Christophe Leys
The emergence of micropollutants into our aquatic resources is regarded as an issue of increasing environmental concern. To protect the aquatic environment against further contamination with micropollutants, treatment with advanced oxidation processes (AOPs) is put forward as a promising technique. In this work, an innovative AOP based on electrical discharges in a continuous-flow pulsed dielectric barrier discharge (DBD) reactor with falling water film over activated carbon textile is examined for its potential application in water treatment...
January 15, 2019: Journal of Hazardous Materials
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