Decolorization of textile indigo dye by ligninolytic fungi

The indigo dye is extensively used by textile industries and is considered a recalcitrant substance, which causes environmental concern. Chemical products used on textile processing, which affect the environment through effluents, can be voluminous, colored and varied. Vat textile dyes, like indigo, are often used and dye mainly cellulosic fibers of cotton. Decolorization of this dye in liquid medium was tested with ligninolytic basidiomycete fungi from Brazil. Decolorization started in a few hours and after 4 days the removal of dye by Phellinus gilvus culture was in 100%, by Pleurotus sajor-caju 94%, by Pycnoporus sanguineus 91% and by Phanerochaete chrysosporium 75%. No color decrease was observed in a sterile control. Thin layer chromatography of fungi culture extracts revealed only one unknown metabolite of Rf = 0.60, as a result of dye degradation. (C) 2001 Published by Elsevier B.V. B.V.

Colorimetric determination of ambient ozone using indigo blue droplet

A simple and sensitive method based on a liquid droplet is described for the measurement of atmospheric ozone. A 30 μL drop of indigo blue solution is suspended in a flowing-air sampling stream. The ozone collected reacts with the indigo solution resulting in its decolorization. The colorimetric sensor is composed of two optical fibers and the source of monochromatic light was a red LED (625 nm). The calibration curve was constructed with ozone standard concentrations ranging from 37 - 123 ppbv. The detection limit achieved was 7.3 ppbv. The method considered here showed itself to be easy to apply with a fast response and a total analysis time of only 5 minutes.

A New and Simple Visual Technique Based on Indigo Dye for Determination of Ozone in Ambient Air

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Frolockender Glücks-Wunsch und freudiges Jubel-Geschrey bey dem wohlverwahrten Auszuge des fameusen Juden und Ertz-Land-Betriegers Joseph Süß Oppenheimer von Stuttgard nach Hohen-Neuffen und Asperg, und von daher den 4ten Febr. 1738 zum Galgen und denen Teuffeln, in einem kurzgefaßten Carmine, worinnen dessen vornehmste Verbrechen und Schindereyen angemercket

entworffen von den hart beträngt gewesenen Würtenbergischen Unterthanen

Der Indigo

Von Dr. Ernst Wulff

Indigo

Louise von Panhuys

De Gemmis Scriptvm Evacis Regis Arabvm : Olim A Poeta Qvodam Non Infeliciter Carmine Redditvm, & nunc primum in luce editum

opera & studio D. Henrici Rantzovii Serenißimi Danorum Regis per Holsatiam & Dietmarsiam legati

A ferrous oxalate mediated photo-Fenton system: Toward an increased biodegradability of indigo dyed wastewaters

This study assessed the applicability of a ferrous oxalate mediated photo-Fenton pretreatment for indigo-dyed wastewaters as to produce a biodegradable enough effluent, likely of being derived to conventional biological processes. The photochemical treatment was performed with ferrous oxalate and hydrogen peroxide in a Compound Parabolic Concentrator (CPC) under batch operation conditions. The reaction was studied at natural pH conditions (5–6) with indigo concentrations in the range of 6.67–33.33 mg L−1, using a fixed oxalate-to-iron mass ratio (C2O42−/Fe2+ = 35) and assessing the system's biodegradability at low (257 mg L−1) and high (1280 mg L−1) H2O2 concentrations. In order to seek the optimal conditions for the treatment of indigo dyed wastewaters, an experimental design consisting in a statistical surface response approach was carried out. This analysis revealed that the best removal efficiencies for Total Organic Carbon (TOC) were obtained for low peroxide doses. In general it was observed that after 20 kJ L−1, almost every treated effluent increased its biodegradability from a BOD5/COD value of 0.4. This increase in the biodegradability was confirmed by the presence of short chain carboxylic acids as intermediate products and by the mineralization of organic nitrogen into nitrate. Finally, an overall decrease in the LC50 for Artemia salina indicated a successful detoxification of the effluent.

Quae hoc libro continentur, Sedulii mirabilium diuinoru[m] libri quatuor carmine heroico ; Eiusdem Elegia, in qua finis pentametri est similis principio hexametri ; Eiusde[m] hymnus de Christo ab incarnatione, usq[ue] ad asce[n]sione[m]. Iuuenci de Euange

Sign.: []8, a-c8, d4, e-i8, k10, 2a-2d8, 2e6, 2f-2g8, 2h6, A-F8, G4, H-I8, K4, 4a8, 4b10, 4c8, 4d10, 4e4, 2[alfa]-2[delta]8, 2[épsilon]4

Quae hoc libro continentur, Sedulii mirabilium diuinoru[m] libri quatuor carmine heroico ; Eiusdem Elegia, in qua finis pentametri est similis principio hexametri ; Eiusde[m] hymnus de Christo ab incarnatione, vsq[ue] ad asce[n]sione[m]. Iuuenci de Euangelica historia libri quatuor. Aratoris Cardinalis Historiae Apostolicae libri duo. Probae Falconiae ce[n]to ex Vergilio de nouo & veteri testame[n]to. Homerocentra, hoc est centones ex Homero graece cum interpretatione latina. Opusculum ad Annu[n]tiationem beatiss. Virginis graece cum latino in medio quaternionum omnium. Lactantii Firmiani de Resurrectione Elegia... Cyprianus De ligno crucis versu heroico. Tipherni deprecatoria ad Virginem elegia ... Sancti Damasi De laudibus Pauli apostoli versus hexametri ... Vita S. Martini episcopi a Seuero Sulpitio prosa oratione ...Vita S. Nicolai e graeco in latinum a Leonardo Iustiniano patritio Veneto

Sign.: []8, a-c8, d4, e-i8, k10, 2a-2d8, 2e6, 2f-2g8, 2h6, A-F8, G4, H-I8, K4, 4a8, 4b10, 4c8, 4d10, 4e4, 2[alfa]-2[delta]8, 2[épsilon]4

La garance et l'indigo /

Includes bibliographical references.

Disputatio de Horatii Carmine primo ...

Mode of access: Internet.

De Horatii carmine III 27 addito corollario: dissertatio philologica quam ...

Dissertation--Academia Fridericia Guilelmia Rhenana.

Quae hoc libro continentur : Sedulii mirabilium diuinoru[m] libri quatuor carmine heroico : eiusdem Elegia ... ; eiusde[m] Hymnus de Christo ab incarnatione ... /

Es el volumen II de "Poetae Christiani Veteres"