Showing results for: wastewater treatment metal Articles

Chinese Nonferrous Metal Manufacturer Case Study

Industrial Wastewater Treatment Success Stories Chinese Nonferrous Metal Manufacturing Waste Water Treatment Great Results of Nonferrous Metals Manufacturer Jar Test Jar testing result of China Daye Nonferrous Metals Company, Hubei, China 碱性溶液（pH=9）raw water (pH 9) ...

Apr. 24, 2009

Metal Machining Facility Wastewater Treatment Case Study

Effective Breaking of the Oil Emulsion in Machine Shop Wastewater This is the result of our Floccin 1105 product treating a sample from a Metal machining facility. The sample was at a pH of 9 and CO2 was added to bring the pH down to neutral (pH at 7). The Floccin 1105 was very effective at clarifying the waste, breaking the strong oil emulsion and capturing the oil. The dosage was minimal ...

May 24, 2012

Metal Processing Facility 1 Wastewater Treatment

Integrated Engineers, Inc. conducted the below treatability on a Metal Processing facility that uses soluble machine coolants in their machining process; below are the ...

Jan. 29, 2009

Biosorption of chromium(VI), nickel(II) and Remazol Blue by <italic>Rhodotorula muciloginosa</italic> biomass

Biosorption of chromium(VI), nickel(II) and Remazol Blue by Rhodotorula muciloginosa biomass

The passive removal of commonly used reactive dye and two heavy metals, from aqueous solutions by inexpensive biomaterial, yeast Rhodotorula muciloginosa biomass, termed biosorption, was studied with respect to pH, initial dye concentration and initial metal ion concentration. The biomass exhibited maximum dye and chromium(VI) uptake at pH 5 and pH 6 for nickel(II) in media containing 50 mg/L ...

Jan. 1, 2012

Metal Processing Facility 3 Wastewater Treatment

Treatability Procedure 1) Mix samples with regular and chrome laden stream to obtain a 7% by volume chrome to regular wastewater blend. Used a 2,000 ml sample 2) Initial pH = 9.5, Conductivity = 3,4250 uS, ORP = +55.9 mV 3) Add IE-061 (10% solution) for a total of 0.3ml of neat product to an ORP of –163 mV. 4) PH still at 9.5, added Carbon dioxide gas to a pH of 7.0 Sample was buffered ...

Jan. 29, 2009

Efficient Treatment of Complex Wastewaters at Umicore Precious Metals using Biotechnology

Untitled Document Paques and Umicore have demonstrated the feasibility of biological treatment of the highly complex Hoboken wastewaters in a 1 m 3 /h pilot plant at Umicore Precious Metals, Hoboken, Belgium. In the first step arsenic was precipitated from copper smelter effluent as As 2 S 3 using biogenic produced H 2 S. Other metals such as copper, lead and cadmium were ...

Jan. 1, 2005

By Paques Technology B.V.

Multi-metals column adsorption of lead(II), cadmium(II) and manganese(II) onto natural bentonite clay

The present work was aimed at evaluating the multi-metals column adsorption of lead(II), cadmium(II) and manganese(II) ions onto natural bentonite. The bentonite clay adsorbent was characterized for physical and chemical properties using X-ray diffraction, X-ray fluorescence, Brunauer-Emmett-Teller surface area and cation exchange capacity. The column performance was evaluated using adsorbent ...

Jul. 3, 2017

Heavy metals removal from aqueous solutions by using Ficus religiosa leaves ash: equilibrium and kinetics study

In this study, sorption of lead (II) and chromium (VI) by Ficus religiosa leaves ash (FRLA) was investigated. Batch experiments were performed to study the effects of pH, sorbent dose, temperature and initial metal concentrations. The maximum sorption capacity of lead (II) and chromium (VI) was found to be 68.03 and 38.02 mg g–1, respectively. The optimum pH of 2 and 4 was obtained for chromium ...

Jun. 24, 2013

Effects of metal ions on biomass and 5-aminolevulinic acid production in Rhodopseudomonas palustris wastewater treatment

This work investigated the effects of eight metal ions on Rhodopseudomonas palustris growth and 5-aminolevulinic acid (ALA) yield in wastewater treatment. Results show that metal ions (Mg2+ of 15 mmol/L, Fe2+ of 400 μmol/L, Co2+ of 4 μmol/L, Ni2+ of 8 μmol/L and Zn2+ of 4 μmol/L) could effectively improve the chemical oxygen demand (COD) removal, Rp. palustris biomass and ALA yield. The ...

Oct. 1, 2015

Evaluation of biofilm performance as a protective barrier against biocorrosion using an enzyme electrode

Sulfide is known to be an important factor in microbiologically influenced corrosion (MIC) of metals and concrete deterioration in wastewater treatment structures and sewer pipelines. A sulfide biosensor was used to determine the effectiveness of Escherichia coli DH5α biofilm as a protective barrier against MIC. The biofilm was shown to be effective in protecting surfaces from sulfide and helping ...

Jan. 1, 2011

Removal of phenol from saline water by polyamine chelating resin

Removal of phenol from saline water was carried out with chelating resin. A polyamine chelating resin, Diaion CR-20, removed phenol compounds selectively from industrial wastewater containing 2% salt. From saline water containing 20 mg/L phenol, 70% of the phenol was removed. After treatment, phenol was eluted from the resin by aqueous NaOH, and the resin could also be regenerated ...

Nov. 1, 2013

Modelling and prediction of removal of metal ions from aqueous solution through facilitated transport

A mathematical model has been developed to predict metal ions (Cd+2, Cu+2, Au+3, Pd+2 and Am+3) removals from aqueous solutions through facilitated transport using supported liquid membranes. Predictions from developed model found to be in good agreement with experimental data obtained from literature. Model incorporates kinetic mechanism of metal ion extraction with its diffusion through aqueous ...

Dec. 3, 2009

Organic matter and heavy metal removals from complexed metal plating effluent by the combined electrocoagulation/Fenton process

In the present study, the treatment of metal plating wastewater containing complexed metals originating from the nickel and zinc plating process by electrocoagulation (EC) using stainless steel electrodes was explored. In order to improve the organic matter removal efficiency, the effect of H2O2 addition to the electrocoagulation (the combined EC/Fenton process) application was investigated. For ...

May 1, 2010

Metal Processing Facility 2 Wastewater Treatment

Integrated Engineers, Inc. conducted the below treatability on a Metal Processing facility that uses soluble metal cutting oils in their machining process; below are the results. The treatment required no pH adjustment from the 7.0 pH. The best product was treated with 0.679 grams of Floccin-HP (powdered) in a 100 ml sample and required moderate mixing. The dosage equates to a treatment of 56 ...

Jan. 29, 2009

Copper-spent activated carbon as a heterogeneous peroxydisulfate catalyst for the degradation of Acid Orange 7 in an electrochemical reactor

The exhausted activated carbon generated from the adsorption of heavy metal wastewater needs further treatment/disposal. In this study, a new application of copper-spent activated carbon (Cu-AC) was proposed. Cu-AC was used to activate peroxydisulfate (PDS) for the decolorization of Acid Orange 7 (AO7) and electrical current was introduced to enhance the process. The decolorization followed a ...

Jan. 18, 2016

Biosorption kinetics and isotherms of copper (II) ions from aqueous solution and application of the MATLAB

In this study, biosorption kinetic and isotherm models were examined by the MATLAB for removal of copper ions from aqueous solution freely dead single Rhizopus arhizus and mixed dead waste sludge biomass. The copper ions removal efficiencies at equilibrium were 98%, 95% and 92% for freely dead R.arrhizus and two types of dead waste sludge. The experimental data fitted to pseudo-second order ...

Oct. 17, 2008

Microscopic characteristic of biological iron sulfide composites during the generation process and the association with treatment effect on heavy metal wastewater

Heavy metal pollution is a serious environmental concern worldwide, resulting in both environmental and human harm. Recently, studies have shown that environmental biotechnologies based on sulfate reduction offer a potential for removal of toxic heavy metals. Biological iron sulfide composites are iron sulfide compounds generated in situ by sulfate-reducing bacteria. In this study, microscopic ...

Oct. 20, 2014

Aluminosilicate-based adsorbent in equimolar and non-equimolar binary-component heavy metal removal systems

Cadmium (Cd) and lead (Pb) are toxic heavy metals commonly used in various industries. The simultaneous presence of these metals in wastewater amplifies the toxicity of wastewater and the complexity of the treatment process. This study has investigated the selective behavior of an aluminosilicate-based mesoporous adsorbent. It has been demonstrated that when equimolar quantities of the metals ...

Aug. 19, 2015

Adsorption of nickel and arsenic from aqueous solution on natural sepiolite

The adsorption capacity of a natural nanostructured clay (sepiolite) for the inorganic species: Ni2+ and As(V) has been studied using a batch method. The different parameters affecting sorption such as the mass of adsorbent, contact time, sorbate concentration or pH have been investigated and optimal experimental conditions have been determined. Langmuir and Freundlich equations, which are ...

Feb. 7, 2012