Acid Waste System Articles on Environmental XPRT

Acid mine drainage treatment

Acid mine/rock drainage is a rampant problem in the world today. The above photo depicts acid drainage at an abandoned mine in the Yukon Territory of northwest Canada. This mine shares a similar history to thousands of other mines throughout the world. It was in operation for six short years in the 1950’s, producing gold ore. Its profitability eventually failed and it was abandoned. In the ...

May 17, 2016

By WesTech Engineering, Inc.

Amino acid analysis matrix independent analysis of free amino acids

Pickering Laboratories specializes in manufacturing of cationexchange columns and eluants for amino acid analysis. No other techniques have been shown to match the reproducibility and sensitivity of this post-column methodology. Advantages of this method, such as absence of matrix interferences, are especially important in analysis of native samples. Pickering provides several options for the ...

Jun. 10, 2010

By Pickering Laboratories, Inc.

IPEX Plenumline Acid Waste System helps North Carolina State University in Comprehensive Renovation

North Carolina State University in Raleigh, N.C. was founded in 1889 and currently enrolls close to 30,000 undergraduate students. Even from its historic beginning, this century old university has managed to remain 'modern1 in an effort to recruit the Nation's brightest minds. Keeping with this trend, the Biology department recently expanded their facilities to match the rapidly increasing ...

Jul. 3, 2014

By IPEX

Alkaline fermentation of waste activated sludge stimulated by saponin: volatile fatty acid production, mechanisms and pilot-scale application

Volatile fatty acid (VFA) production stimulated by saponin (SP), an environmentally friendly bio-surfactant, was investigated during sludge alkaline fermentation in laboratory studies and pilot applications. The combined use of SP and pH 9 condition significantly enhanced VFA production to approximately 425 mg COD/g VSS, which was 4.7-fold of raw sludge and 1.5-fold of sole pH 10 adjustment ...

Oct. 1, 2016

By IWA Publishing

Activated bauxite waste as an adsorbent for removal of Acid Blue 92 from aqueous solutions

Bauxite waste, known as red mud, is produced in some industrial processes, such as aluminum production process. In this process, the waste material is produced from leached bauxite as a by product. In this research, the removal of Acid Blue 92 (AB92) dye was investigated from aqueous solution onto the activated bauxite waste (red mud) in a batch equilibration system. Besides, the influences of ...

Dec. 1, 2010

By IWA Publishing

Characterisation of humic acid maturation by fluorescence spectroscopy and thermal analysis during composting of olive mill waste

Humic acids isolated from different stages of olive mill waste composting were investigated by Elemental analysis, Fluorescence spectroscopy and by Differential Scanning Calorimetry (DSC). The Elemental composition of these humic acids indicates an increase in aromatic structures during the composting. Indeed, the fluorescence results showed an increase in condensed aromatic ring systems. ...

Dec. 9, 2008

By Inderscience Publishers

Hazardous waste and not, Baioni-Dicatech system

The identification, characterization and restoration of contaminated areas now represent a big environmental issue, both at European and national level. In the major industrialized countries the issue of contaminated land has come out in all its gravity in the late seventies when, against a widespread awakening of environmental consciousness, important pollutions events emerged. Consequently, in ...

Aug. 4, 2015

By Baioni Crushing Plants Spa

Waste Water Batch Treatment System

Industrial Wastewater Treatment Batch Treatment Systems (BTS) are intended for lower daily volumes of wastewater typically less than 10,000 gallons per day and designed to “batch” treat wastewater from start to finish at one time. In a batch treatment system, a volume of wastewater is gathered, treated by chemical / physical / biological means, and discharged. Storage ...

Mar. 21, 2017

By Water Innovations, Inc

Komax teflon lined mixer simplifies acid injection for power plant

A major source of waste water in many power plants is the waste stream that results from ion exchange used for demineralizing the boiler feed water. The alkaline regeneration waste stream produced by the ion exchange process requires the addition of an acid to this stream before discharge from the plant. Regulatory authorities typically require the effluent to have a near neutral pH before ...

Jul. 15, 2009

By Komax Systems, Inc.

Hydrochemical changes in a reservoir that receives water contaminated by acid mine drainage

The aim was to characterize hydrochemical changes that take place in the Sancho reservoir, which receives waters contaminated by acid mine drainage (AMD) from the Meca River (Iberian Pyrite Belt, SW Spain). The sampling procedure comprised bimonthly campaigns carried out between October 2011 and May 2012, in the entrance of the reservoir and in the input river waters. In addition to in situ ...

Jun. 3, 2015

By IWA Publishing

Water mixing in waste lagoons

Man-made lagoons have been used worldwide for the treatment of domestic and industrial wastewater, it seems, forever. All waste lagoons were first designed and thoughtfully planned considering their locations, soil makeup, and waste reduction processes prior to being implemented. The biological process of organic waste reduction is always a consideration of waste lagoon designs. There are three ...

Apr. 19, 2017

By Reliant Water Technologies

A Case Study For Thermal Treatment Of Fluorinated Hydrocarbon With 15% Wt Hydrofluoric Acid Recovery

This paper is a joint presentation by 3M Specialty Materials and Selas-Linde to describe the thermal treatment technology used to safely destroy Fluorinated Hydrocarbon components generated as a result of fluorination of organic compounds. Thermal treatment of these components results in high concentration of Hydrogen fluoride in the combustion chamber requiring special attention to handling and ...

May 18, 2001

By Linde Engineering North America Inc. (formerly Selas Fluid Processing)

The East-Sullivan Mine Site: Merging Prevention and Treatment of Acid Mine Drainage - update

ABSTRACTThe East Sullivan mine was closed in 1966, leaving 15 Mt of acid-generating tailings free to contaminate theenvironment. An experimental wood waste cover was implemented in the early 80's in order to prevent sulphideoxidation. Contaminant production and dispersion were investigated in the 90's to validate that concept and guide lateractions. Ligneous wastes stop oxygen, and also favour ...

Dec. 1, 2009

By Hydrogeochem Env. Inc.

Management of Hazardous Wastes

' Management of hazardous waste is a growing concern in many countries. The long-term impacts and costs of improper disposal can be very high and the emphasis must be on prevention. A comprehensive management system should include (i) policies, institutions and effective regulations and (ii) adequate and acceptable disposal facilities (either public or private). This note outlines the key ...

Jan. 1, 1997

By The World Bank

Effect of low cost activated carbon on the photocatalytic degradation of Acid blue 158 from aqueous solution

The photocatalytic degradation of Acid blue 158, an anionic dye was carried out using the mixture of activated carbon prepared from sugar mill waste bagasse (BC) and TiO2 (BC + TiO2) under UV irradiation. Adsorption studies using BC and photodegradation using TiO2/UV were also carried out for ...

Jun. 2, 2014

By Inderscience Publishers

Toxins Found in E-Waste

One of the worst effects of a skyrocketing, global e-waste crisis is the risk of toxic contamination for the environment and communities. In fact, delving into the many chemical and heavy metal materials that make up most electronic devices, it seems that toxins and electronics go hand in hand. Though many manufacturers of electronic devices are finding innovative ways to work around toxins found ...

Jan. 5, 2015

By Electronic Recyclers International, Inc (ERI)

Minicipal Waste Incinerator Case History

Low temperature plant operation had resulted in severe baghouse corrosion and constant dust blockages throughout the system. It was decided to raise the operational temperature of the incinerator and change the acid gas scrubbing agent from lime to sodium bicarbonate. However, the existing felt filter media could not cope with the change in acid gas scrubbing agent and “blinded” very rapidly ...

Jan. 1, 2005

By W. L. Gore & Associates

Development of a highly specific and productive process for <italic>n-</italic>caproic acid production: applying lessons from methanogenic microbiomes

Development of a highly specific and productive process for n-caproic acid production: applying lessons from methanogenic microbiomes

High productivity and specificity in anaerobic digesters arise because complex microbiomes organize into a metabolic cascade to maximize energy recovery and to utilize the advantage that the gaseous end product methane freely bubbles out of the system. These lessons were applied to ascertain whether a reactor microbiome could be shaped to produce a different end product. The liquid product ...

Jan. 16, 2014

By IWA Publishing

Adwest Technologies flameless retox rto oxidizers with acid gas scrubbers for cost effective voc & odor abatement

Adwest Technologies, Inc. provides cost effective Flameless Regenerative Thermal Oxidizers (RTO) with acid gas scrubber systems for cost effective VOC and odor abatement from malodorous VOC processes including food processing, rendering, petfood, biopharma spray dryer, bakery oven, composites, foundry, biogas, sludge dryers and waste water treatment plants (WWTP) off gas applications. ...

Dec. 7, 2012

Acid Mine Drain (AMD) treatment to achieve very low residual heavy metal concentrations

Abstract Mount Emmons mine wastewater treatment plant currently treats on average around 450,000 gallons per day of acid mine drain (AMD) water collected into several collection ponds. The plant uses standard lime hydroxide precipitation process at pH 10.7 to precipitate heavy metals and remove AMD contaminants with the subsequent flocculation - dissolved air flotation (DAF) and sand ...

Jan. 1, 2012

By Clean Water Technology, Inc.

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