Using of Industrial Waste Materials for Textile Wastewater Treatment

Abstract

Sorption is one of the several methods that have been successfully utilized for dyes removal. A large number of materials have been used as suitable sorbents for decolourization of industrial effluents: activated carbon (the most common but expensive adsorbent), polymeric resins, various low-cost adsorbents (agricultural and industrial by-products, peat, chitin, silica, bentonite, other clays, fly ash). Our paper is a review about our researches regarding different types of industrial and agricultural waste materials with sorptive properties (ashes, textile fibres, sawdust, lignin, sun flower shells, corn cob, etc.) that were utilized into textile wastewater treatment. Batch sorption experiments were carried out in order to establish the favourable conditions to uptake of dyes. The studied operating variables were: pH, sorbent dose, dyes concentration, temperature and sorption time. The sorption systems were described using Freundlich, Langmuir and Dubinin-Radushkevich isotherm models.

Synthesis, Characterization, and Evaluation of Adsorption Properties of Activated Carbon Obtained from Neem Leaves (Azadirachta Indica)

“…The properties of the carbonized material were studied as per standard methods 11 used for adsorption studies. The nine varieties of Neem Activated Carbons prepared are coded as NAC 1 to NAC 9 . The activated carbon prepared was not only low cost but also ecofriendly.…”

“…Besides, due to very large water consumption, the characterization of effluents is important to determine its reuse as a safe option. Thus, due to high level of contamination in textile wastewaters, the recycling has been recommended [9][10] .…”

Textile Organic Dyes – Characteristics, Polluting Effects and Separation/Elimination Procedures from Industrial Effluents – A Critical Overview

“…are also used for removal of dye and organic coloured matter from textile effluents (i.e. a removal of 40-90% basic dyes and 40% direct dyes, with maximum adsorption capacities for basic dyes of 338 mg/g) (Anjaneyulu et al, 2005;Bhattacharyya & Sarma, 2003;Gupta et al, 1992;Nigam et al, 2000;Ozcan et al, 2004;Robinson et al, 2001;Suteu & Zaharia, 2008;Suteu et al, 2009b;Suteu et al, 2011a,b;Zaharia et al, 2011). The use of these materials is advantageous mainly due to their widespread availability and cheapness.…”

“…Table 16. Dye adsorption performance onto some natural adsorptive materials (adapted from Suteu et al, 2009b;Suteu et al, 2011a,b).…”

Development and Characterization of Surface Porosity in Tannery Sludge Derived Adsorbent

“…The use of activated carbons derived from expensive starting materials is not satisfactory for most pollution control applications. Research works on the usage of non-conventional adsorbents (natural materials, bio sorbents and waste materials from industry and agriculture) with lower cost and high efficiency [8][9][10] are being focussed. Several recent publications [11][12][13] indicate the interest in developing sustainable and environmentally safe recycling processes to produce value products such as activated carbon from wastes.…”