Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Hydrometallurgical Technology for Processing of Galvanic Sludges
View through CrossRef
The problem of processing galvanic sludges, formed as a result of neutralization of technological solutions and wastewater containing heavy non-ferrous metals is considered in this study. At present, sludges are transported to disposal area and are not used in any way. Typically, such sludges contain significant amounts of chromium and nickel, which creates environmental hazard. Investigated sludge contains up to 6,6% Ni and up to 7,4% Cr. The hydrometallurgical process to treatment of these sludges is carried out. Solutions of sulfuric acid and ammonia were used as lixiviants. It is shown that when using a solution of sulfuric acid with pH=1,5, extraction of up to 93,3% Cu, 70,2 Ni, 90,3 Zn is achieved. For selective nickel recovery sorption concentration by Lewatit TP207 is proposed.
Keywords: Galvanic sludge, hydrometallurgy leaching, nickel, ion-exchange resin
Title: Hydrometallurgical Technology for Processing of Galvanic Sludges
Description:
The problem of processing galvanic sludges, formed as a result of neutralization of technological solutions and wastewater containing heavy non-ferrous metals is considered in this study.
At present, sludges are transported to disposal area and are not used in any way.
Typically, such sludges contain significant amounts of chromium and nickel, which creates environmental hazard.
Investigated sludge contains up to 6,6% Ni and up to 7,4% Cr.
The hydrometallurgical process to treatment of these sludges is carried out.
Solutions of sulfuric acid and ammonia were used as lixiviants.
It is shown that when using a solution of sulfuric acid with pH=1,5, extraction of up to 93,3% Cu, 70,2 Ni, 90,3 Zn is achieved.
For selective nickel recovery sorption concentration by Lewatit TP207 is proposed.
Keywords: Galvanic sludge, hydrometallurgy leaching, nickel, ion-exchange resin.
Related Results
Settling Of Synthetic Sludges And Koalinites
Settling Of Synthetic Sludges And Koalinites
Abstract
The settling of a synthetic sludge and purified kaolinite in various liquid phases was studied in order to determine the collcidal forces of particle int...
Methane production potential of pulp mill sludges: microbial community and substrate constraints
Methane production potential of pulp mill sludges: microbial community and substrate constraints
Abstract
Sludges from pulp and paper mills represent a major ecological and environmental cost, and anaerobic digestion represents a method of waste reduction and en...
Lime Stabilization of Wastewater Sludges
Lime Stabilization of Wastewater Sludges
The standard lime stabilization process and two process modifications are effective procedures for reducing fecal streptococcus concentrations (disinfection) in wastewater sludges....
The influence of biosolids treatment files on the mobility of metal trace elements
The influence of biosolids treatment files on the mobility of metal trace elements
The production of sludge in France is estimated to be about 900,000 metric tons dry matter per year and 60% of this is recycled onto agricultural land. At present, the long term fu...
Review of resource utilization of Fe-rich sludges: purification, upcycling, and application in wastewater treatment
Review of resource utilization of Fe-rich sludges: purification, upcycling, and application in wastewater treatment
This paper discusses the resource utilization of Fe-rich sludges generated as waste products from water treatment, hydrometallurgy, surface finishing, and dye chemical industries. ...
Vestibular-evoked myogenic potential (VEMP) triggered by galvanic vestibular stimulation recorded in the lower limbs v1
Vestibular-evoked myogenic potential (VEMP) triggered by galvanic vestibular stimulation recorded in the lower limbs v1
Galvanic vestibular stimulation (GVS) is a method that stimulates the vestibular afferents with a small current, triggering a motor reflex response in the posture-controlling muscl...
EPD Electronic Pathogen Detection v1
EPD Electronic Pathogen Detection v1
Electronic pathogen detection (EPD) is a non - invasive, rapid, affordable, point- of- care test, for Covid 19 resulting from infection with SARS-CoV-2 virus. EPD scanning techno...
GALVANIC STIMULATION OF LUMINESCENCE IN PELAGIA NOCTILUCA
GALVANIC STIMULATION OF LUMINESCENCE IN PELAGIA NOCTILUCA
1. Pelagia noctiluca responds to galvanic stimulation by a luminescent glow at the anode. If placed near the cathode a secondary glow occurs also on the cathodal side.
...