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https://read.qxmd.com/read/30754020/simultaneous-removal-of-aniline-antimony-and-chromium-by-zvi-coupled-with-h-2-o-2-implication-for-textile-wastewater-treatment
#1
Xue Gang, Qi Wang, Yajie Qian, Pin Gao, Yiming Su, Zhenhong Liu, Hong Chen, Xiang Li, Jiabin Chen
Aniline, antimony (Sb) and chromium (Cr) are typical and regulated co-contaminants in textile wastewater, but their removal was often investigated individually. In this work, simultaneous removal of aniline, Sb and Cr by ZVI coupled with H2 O2 was studied. With the dosage of 0.5 g L-1 ZVI and 2 mM H2 O2 , aniline, Sb and Cr can be removed completely at pH 3. Experiment with iso-propanol as the radical scavenger confirmed that OH derived from Fenton reaction accounts for aniline degradation, but not for Sb and Cr removal...
February 5, 2019: Journal of Hazardous Materials
https://read.qxmd.com/read/30739299/decolorization-and-biodegradation-of-reactive-red-198-azo-dye-by-a-new-enterococcus-faecalis-klebsiella-variicola-bacterial-consortium-isolated-from-textile-wastewater-sludge
#2
Hadi Eslami, Ahmad Shariatifar, Ebrahim Rafiee, Mahboubeh Shiranian, Faezeh Salehi, Saeede Sadat Hosseini, Gilda Eslami, Reza Ghanbari, Ali Asghar Ebrahimi
The present study investigated biodegradation and removal of Reactive Red 198 (RR198) dye from aqueous environments using a new bacterial consortium isolated from textile wastewater sludge on laboratory scale via batch study. Two bacterial species, Enterococcus faecalis (EF) and Klebsiella variicola (KV), were identified after isolation, through biochemical assays, Polymerase chain reaction (PCR), and 16S rRNA gene sequencing. To determine their ability to biodegrade RR198 dye, physicochemical parameters, including bacterial concentration, time, pH, and temperature, were tested; the results showed that the best conditions included a bacterial concentration of 3...
February 9, 2019: World Journal of Microbiology & Biotechnology
https://read.qxmd.com/read/30708345/composite-nanofiltration-membrane-with-asymmetric-selective-separation-layer-for-enhanced-separation-efficiency-to-anionic-dye-aqueous-solution
#3
Zhenhua Lü, Feng Hu, Haiyan Li, Xiru Zhang, Sanchuan Yu, Meihong Liu, Congjie Gao
The development of high performance membrane is crucial for enhanced separation efficiency of nanofiltration process in treating wastewaters from dye and textile industries. In this work, a novel thin-film composite nanofiltration membrane with an asymmetric separation layer composed of relatively compact skin and loose body was designed and fabricated for improved perm-selectivity and antifouling property. Nascent composite membrane with loose poly(piperazine amide) (PA) separation layer was interfacially synthesized and performed with secondary surface reaction using an aqueous tannic acid (TA) solution...
January 25, 2019: Journal of Hazardous Materials
https://read.qxmd.com/read/30689337/rapid-and-efficient-coacervate-extraction-of-cationic-industrial-dyes-from-wastewater
#4
Benjamin E Valley, Benxin Jing, Manuela Ferreira, Yingxi Zhu
Effluent wastewater containing dyes from textile, paint, and various other industrial wastes have long posed environmental damage. Functional nanomaterials offer new opportunities to treat these effluent wastes in an unprecedentedly rapid and efficient fashion due to their large surface area-to-volume ratio. In this work, we explore a new approach of wastewater treatment using macroionic coacervate complexes formed with zwitterionic polyampholytes and anionic inorganic polyoxometalate (POM) nanoclusters to extract methylene blue (MB) dye as well as other cationic industrial dyes from model wastewater...
January 28, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30682477/fabricated-and-functionalized-magnetite-phenylenediamine-cellulose-acetate-nanocomposite-for-adsorptive-removal-of-methylene-blue
#5
Mohamed E Mahmoud, Mohamed S Abdelwahab
The industrial revolution in textile and dying process is moving with huge steps, but the treatment of produced wastewater from this industry is a huge dilemma. This work demonstrates the preparation and utilization of cellulose acetate (CA) blended with Fe3 O4 already chemically modified with O-phenylenediamine (PDA) to prepare a novel magnetic Fe3 O4 /PDA/CA nanocomposite. This nanomaterial was aimed to use in the removal of methylene blue (MB) dye from water. The adsorption process was conducted using a batch technique and the removal process was evaluated under various experimental conditions...
January 22, 2019: International Journal of Biological Macromolecules
https://read.qxmd.com/read/30677935/residual-micro-organic-pollutants-and-their-biotoxicity-of-the-effluent-from-the-typical-textile-wastewater-treatment-plants-at-pearl-river-delta
#6
Feifei Xue, Bing Tang, Liying Bin, Jianwen Ye, Shaosong Huang, Fenglian Fu, Ping Li, Jiao Cui
This work investigated the biotoxicity and the residual dissolved organic matter (DOM) of the effluents from nine typical full-scale textile plants located at Pearl River Delta (PRD) in Guangdong province, China. The fluorescence regional integration (FRI) analysis showed that the tryptophan-like (II), soluble microbial product-like (IV) and fulvic acid-like substances (III) were the dominant compounds in the DOM. The acute toxicity test showed toxic effects still remained in most textile effluents, which might attribute to the undegraded dyes or aromatic compounds...
March 20, 2019: Science of the Total Environment
https://read.qxmd.com/read/30673285/porous-eleocharis-mnpe-layered-hybrid-for-synergistic-adsorption-and-catalytic-biodegradation-of-toxic-azo-dyes-from-industrial-wastewater
#7
Muhammad Ahmad, Maryam Yousaf, Abdul Nasir, Ijaz Ahmad Bhatti, Asif Mahmood, Xiaocui Fang, Xian Jian, Kourosh Kalantar-Zadeh, Nasir Mahmood
The effective treatment of industrial wastewater to protect fresh water reserves for the survival of life is a primary focus of current research. Herein a multicomponent Eleocharis-manganese peroxidase enzyme (Eleocharis@MnPE) layered hybrid with high surface area (1,200 m2/m3), with a strong synergistic adsorption-catalytic biodegradation (SACB), has been developed through a facile method. A combination of outer porous (Eleocharis) and inner catalytically active (MnPE) components of the hybrid resulted in highly efficient SACB system, evidenced by high removal rate of 15 kgm-3day-1 (100%) and complete degradation of toxic Orange II (OR) azo dye into non-toxic products (gases and weak acids)...
January 23, 2019: Environmental Science & Technology
https://read.qxmd.com/read/30634116/adsorption-of-textile-dyes-using-an-activated-carbon-and-crosslinked-polyvinyl-phosphonic-acid-composite
#8
Ana María Herrera-González, Martín Caldera-Villalobos, Alejandra-Alicia Peláez-Cid
Activated carbon is one of the most studied materials for the adsorption of textile dyes. The adsorptive properties of this material are a result of its high specific surface area and some of the functional groups acquired during the chemical activation. This work reports the preparation of a composite material using CarZN400 activated carbon and polyelectrolyte poly(VPA-co-TEGDMA). The adsorptive properties of the material obtained are a result of the combination of the high specific surface area of the carbon and the ionic exchange capability of the polyelectrolyte...
January 8, 2019: Journal of Environmental Management
https://read.qxmd.com/read/30629532/pollution-characteristics-and-fate-of-microfibers-in-the-wastewater-from-textile-dyeing-wastewater-treatment-plant
#9
Xia Xu, Qingtong Hou, Yingang Xue, Yun Jian, LiPing Wang
Wastewater discharged from wastewater treatment plants (WWTPs) is suspected to be a significant contributor of microplastics (MPs) to the environment, and fiber is the main shape of MPs in wastewater effluent. A typical textile industry WWTP with 30,000 tons of daily treatment capacity was sampled for microfibers at different stages of the treatment process to ascertain at what stage in the treatment process the microfibers are being removed. The average abundance of microfibers was 334.1 (±24.3) items/litre in influent, and it reduced to 16...
December 2018: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://read.qxmd.com/read/30623733/adsorption-capacity-comparison-between-graphene-oxide-and-graphene-nanoplatelets-for-the-removal-of-colored-textile-dyes-from-wastewater
#10
Lilian K de Assis, Bárbara S Damasceno, Marilda N Carvalho, Eveline H C Oliveira, Marcos G Ghislandi
The synthesis of graphene oxide (GO) nanosheets, to be used as adsorbent for the removal of textile dyes from wastewater, was optimized by the modified Hummers method. The GO nanosheets produced were compared with commercial graphene and characterized by X-ray diffractometry (XRD), Raman spectroscopy, specific surface area analysis, and zero-charge point (pHpcz). Both GO and graphene nanomaterials were originally used to adsorb two colored dyes (direct red 81 and Indosol SFGL direct blue), which are commonly disposed in textile industrial effluents...
January 9, 2019: Environmental Technology
https://read.qxmd.com/read/30607856/removal-of-azo-dye-from-water-via-adsorption-on-biochar-produced-by-the-gasification-of-wood-wastes
#11
Miguel Antônio Pires Kelm, Mário José da Silva Júnior, Sávio Henrique de Barros Holanda, Caroline Maria Bezerra de Araujo, Romero Barbosa de Assis Filho, Emerson Jaguaribe Freitas, Diogo Rafael Dos Santos, Maurício Alves da Motta Sobrinho
It was the aim of this work to evaluate the adsorptive performance of the biochar obtained from the gasification of wood residues onto a solution of Indosol Black NF1200 dye. The study was performed by means of factorial design 22 , having as control variables: pH and adsorbent's granulometry. Batch tests were carried out at 200 rpm for 3 h (T = 28 °C). As output variable, the percentage removal of dye was determined. The best operating conditions were pH = 2 and 100 mesh granulometry. Also, adsorbent dosage studies were carried out, as well as equilibrium and adsorption kinetics...
January 3, 2019: Environmental Science and Pollution Research International
https://read.qxmd.com/read/30595209/genotoxicity-of-textile-dye-c-i-disperse-blue-291-in-mouse-bone-marrow
#12
Fábio Henrique Fernandes, Gisela de Aragão Umbuzeiro, Daisy Maria Fávero Salvadori
Color Index (C.I.) Disperse Blue 291 (DB291) is an azo dye used by the textile industry. After yarn dyeing, wastewater containing the dye, released into the aquatic environment, may pollute drinking water sources. We investigated the mutagenicity and genotoxicity of DB291 in male Swiss mice, following oral administration. Micronucleated cells, primary DNA damage (comet assay) in blood, liver, and kidney cells, and BAX, BCL2, SMAD4 and TNFA gene expression in leukocytes were evaluated. An increased frequency of micronucleated polychromatic erythrocytes (MNPCEs) was observed in animals treated with 50 mg/kg bw; no other genetic alteration was detected...
January 2019: Mutation Research
https://read.qxmd.com/read/30590996/process-optimization-for-effective-bio-decolourization-of-reactive-orange-16-using-chemometric-methods
#13
Saurabh Mishra, Abhijit Maiti
Azo group containing reactive dyes are most commonly used in textile and tannery industries due to its bright appearance and stable color. This study aims to investigate the decolourization of reactive orange 16 (RO16) dye by Pseudomonas aeruginosa 23N1 along with removal of chromate (Cr(VI)) and evaluation of optimal process condition. The regular two-level factorial design is used to screen out operational parameters and selects their levels for further optimization process through central composite design (CCD) based response surface methodology (RSM)...
December 28, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/30578140/efficacy-of-laundering-and-tumble-drying-in-reducing-microbial-contamination-of-wastewater-treatment-plant-worker-coveralls
#14
Rasha Maal-Bared
BACKGROUND: Evidence implicates textiles in health care as potential reservoirs of pathogens. No similar data exist for the wastewater treatment plant (WWTP) industry. We investigated if coveralls worn by WWTP workers could present occupational infection risk. METHODS: We enumerated heterotrophic plate counts (HPCs), total coliforms, Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, methicillin-resistant Staphylococcus aureus, Clostridium difficile, and Acinetobacter spp on coverall swatches experimentally contaminated with raw, primary, secondary, and final effluent...
December 18, 2018: American Journal of Infection Control
https://read.qxmd.com/read/30569840/dye-synthetic-solution-treatment-by-direct-contact-membrane-distillation-using-commercial-membranes
#15
Heloisa Ramlow, Ricardo Antonio Francisco Machado, Andrea Cristiane Krause Bierhalz, Cintia Marangoni
The reuse of treated dyeing wastewater has become a viable option to minimising water scarcity problems and environmental impacts in the textile industry. The potentiality of commercial flat sheet membranes of polytetrafluoroethylene (PTFE) and polypropylene (PP) in direct contact membrane distillation (DCMD) for dye synthetic solution treatment has been explored in this work. DCMD is interesting for the textile industry since a recovery of heat by hot dyeing wastewater for thermal energy is possible. Moreover, DCMD enables water and dye reclamation with possible reuse in the textile process...
December 20, 2018: Environmental Technology
https://read.qxmd.com/read/30555766/decolorization-and-detoxification-of-textile-wastewaters-by-recombinant-myceliophthora-thermophila-and-trametes-trogii-laccases
#16
Klára Herkommerová, Jiří Dostál, Iva Pichová
Laccases are multi-copper oxidoreductases with broad biotechnological applications. Here, we report detailed biochemical characterization of purified recombinant laccases originating from Myceliophthora thermophila (MtL) and Trametes trogii (TtL). We identified optimal conditions for decolorization of commercial dyes and textile wastewater samples. We also tested the toxicity of decolorized wastewater samples using human peripheral blood mononuclear cells. MtL and TtL were expressed in Saccharomyces cerevisiae , and secreted enzymes were purified by consecutive hydrophobic and gel chromatography...
December 2018: 3 Biotech
https://read.qxmd.com/read/30551682/treatment-of-wastewater-using-seaweed-a-review
#17
REVIEW
Nithiya Arumugam, Shreeshivadasan Chelliapan, Hesam Kamyab, Sathiabama Thirugnana, Norazli Othman, Noor Shawal Nasri
Inadequately treated or untreated wastewater greatly contribute to the release of unwanted toxic contaminants into water bodies. Some of these contaminants are persistent and bioaccumulative, becoming a great concern as they are released into the environment. Despite the abundance of wastewater treatment technologies, the adsorption method overall has proven to be an excellent way to treat wastewater from multiple industry sources. Because of its significant benefits, i.e., easy availability, handling, and higher efficiency with a low cost relative to other treatments, adsorption is opted as the best method to be used...
December 13, 2018: International Journal of Environmental Research and Public Health
https://read.qxmd.com/read/30535545/removal-of-pollutants-cod-tss-and-no-3-from-textile-effluent-using-gambusia-fish-and-phragmites-australis-in-constructed-wetlands
#18
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://read.qxmd.com/read/30517064/unraveling-the-characteristics-of-a-heteropolysaccharide-protein-from-an-haloarchaeal-strain-with-flocculation-effectiveness-in-heavy-metals-and-dyes-removal
#19
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://read.qxmd.com/read/30502706/occurrence-composition-profiles-and-risk-assessment-of-polycyclic-aromatic-hydrocarbons-in-municipal-sewage-sludge-in-china
#20
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
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