Coagulation and flocculation of dye-containing solutions using a biopolymer (Chitosan)

Guluronic acid content as a factor affecting turbidity removal potential of alginate

“…Additionally, natural or synthetic polymeric substances are used as coagulants alone or as coagulant aids together with metal salts. A number of natural materials have coagulating abilities such as chitosan, starch and alginate (Ahmad et al 2006;Devrimci et al 2012;Divakaran and Pillai 2002;Guibal and Roussy 2007;Labille et al 2005;Madrona et al 2010;Qudsieh et al 2008;Sand et al 2010;Tripathy and Singh 2001). Natural polymers are advantageous because they are less toxic and more biodegradable (Bolto and Gregory 2007).…”

Hybrid Monolith of Graphene/TEMPO-Oxidized Cellulose Nanofiber as Mechanically Robust, Highly Functional, and Recyclable Adsorbent of Methylene Blue Dye

“…The development of competent and eco-friendly adsorbent material for water decontamination has been an ever-growing area for academia and industry, in particular aromatic organic dyes, which possess many hazards such as toxic [1], nonbiodegradable [2], aesthetically objectionable, and light restrictive nature in aqueous environment [1,3]. Among the various treatment techniques such as biological treatment [4], ozone oxidation [4], catalytic degradation [5], photocatalytic oxidation [6], coagulation and flocculation [3], nanofiltration membrane [7], and unsaturated polyester resins [8], adsorption is the most attractive due to competency for variety of organic dyes, insensitivity to toxic pollutants [9], efficiency for low concentration range [10], easiness of operating, and being economical process [9,[11][12][13][14][15][16][17][18][19][20][21].…”

“…Among the various treatment techniques such as biological treatment [4], ozone oxidation [4], catalytic degradation [5], photocatalytic oxidation [6], coagulation and flocculation [3], nanofiltration membrane [7], and unsaturated polyester resins [8], adsorption is the most attractive due to competency for variety of organic dyes, insensitivity to toxic pollutants [9], efficiency for low concentration range [10], easiness of operating, and being economical process [9,[11][12][13][14][15][16][17][18][19][20][21]. Carbon materials in the form of activated carbon are historically dominant for dye decontamination in view of chemical stability, high surface area, and functional active sites [16,20,[22][23][24][25][26].…”

Chemical Treatment of Petroleum Wastewater and its Effect on the Corrosion Behavior of Steel Pipelines in Sewage Networks

“…There are many different common and conventional techniques for wastewater treatment; chemical physicochemical and biological methods are used in the treatment of the petroleum wastewater. The most abundant and effective is the chemical treatment [2][3][4][5][6][7][8]. Chemical treatment permits reduction of dissolved and suspended pollutants as well as the high concentration of fat, oil and grease from petroleum industrial wastewater.…”