Distillery wastewater treatment using waste Fe³⁺/Cr³⁺hydroxide sludge and polymer flocculants

Abstract

Combination of the waste Fe 3+ /Cr 3+ hydroxide sludge and polymer flocculant used in the treatment of distillery wastewater yielded good results.Fe 3+ /Cr 3+ hydroxide sludge and polymer flocculants were not effective, when used separately. Various parameters like turbidity, colour, COD, Chloride, Potassium, Sodium, Calcium and BOD. Among various polymer flocculants used, anionic polymer RF-440 in combination with Fe3 + /Cr 3+

Sorption of metal ions from aqueous solutions by thermally activated electroplating sludge

“…The sorption properties of ashes generated during pyrolysis of slurry in drinking water treatment plants have been investigated (Tanada et al, 1992). The waste Fe(III)/Cr(III) hydroxide sludge from fertilizer industry has been used as flocculant with different polyelectrolytes for the treatment of distillery wastewater and as an adsorbent for the removal of toxic metal ions from wastewaters (Namasivayam and Kanagarathinam, 1992;Namasivayam and Ranganathan, 1993;1995). This paper deals with an attempt to utilize thermally activated electroplating sludge as a sorbent for the removal of lead, copper, nickel and zinc ions from aqueous solutions by a batch operation technique.…”

Treatment of tannery wastewater using “Waste” Fe(III)/Cr(III) hydroxide

“…13 The Fe(III)/Cr(III) ions, produced in solution, are precipitated with lime as Fe(III)/Cr(III) hydroxides. Recently, Namasivayam and coworkers have utilised the "waste" Fe(III)/Cr(III) hydroxide in the place of conventional flocculants/adsorbents for the treatment of wastewaters from the fertilizer industry, 14 dyeing industry, 15 dairy industry, 16 distillery industry 17 and chromium plating industry. 18 The objective of this paper is to explore the feasibility of the waste Fe(III)/Cr(III) hydroxide for the treatment of tannery wastewater.…”

Removal of Lead(II) by Adsorption onto "Waste" Iron(III)/Chromium(III) Hydroxide from Aqueous Solution and Radiator Manufacturing Industry Wastewater

“…The Fe(III)/Cr(III) ions, produced in solution, are precipitated with lime as Fe-(III)/Cr(III) hydroxides. Recently Namasivayam and coworkers have used the "waste" Fe(III)/Cr(III) hydroxide for the treatment of wastewaters from the fertilizer industry (Namasivayam, 1989), dyeing industry (Namasivayam and Chandrasekaren, 1991), dairy industry (Namasivayam and Ranganathan, 1992), distillery industry (Namasivayam and Kanagarathinam, 1992), and chromium plating industry (Namasivayam and Ranganathan, 1993). The present work deals with the adsorption ofPb(II) from wastewater by the Fe(III)/Cr(III) hydroxide as a function of agitation time, Pb(II) concentration, temperature, and pH.…”