waste removal Articles | Environmental XPRT

Ethylene Removal: Reduce Wasting Food

ETHYLENE REMOVAL: Reduction of fruit and vegetable waste throughout the distribution chain Approximately one-third of the worldwide production of foods for human consumption is lost or squandered, equivalent to some 1,300 million tonnes each year. This means that enormous ...

Oct. 7, 2015

By Bioconservacion SA

Dynamic restructuring of waste removal in decentral plants

The mechanical and biological treatment of residual waste meets the requirements for the production of defined material flows out of nonspecific waste. The specific material flows can reach the quality demands of the industry by wet screening, when beforehand the result of composting is a far-reaching biological stabilisation of the residual waste. Three fractions can be separated: recyclable and ...

Jan. 1, 1999

By ORBIT e.V.

Removal of cyanide from liquid wastes by modified clinoptilolite

This paper describes the preparation and evaluation of various cationic forms of clinoptilolite for removal of cyanide from aqueous solutions. The cobalt form of the zeolite showed the highest uptake of 1.95 meq of cyanide per gram of zeolite, whereas the uptake of natural forms is 0.070 meq g-1. The kinetics of cyanide desorption into solutions with different ionic strength were studied. ...

Jan. 27, 2005

By Inderscience Publishers

CERCLA remedial and removal actions at historic waste disposal areas.

Apache Nitrogen Products, Inc. (ANP) has operated a nitrogen-based fertilizer and explosives manufacturing facility in rural Cochise County since 1921. Using a feedstock of anhydrous ammonia, current manufacturing processes produce nitric acid, solid and liquid ammonium nitrate, and various ammonium nitrate-based fertilizer products for regional mining and agricultural markets. Historically, ...

Apr. 13, 2010

By Hargis + Associates Inc

Removal of Radioactive Effluent Waste from Uranium Enrichments Plants

In an effort to reduce greenhouse emissions many nations and multi-national corporations are once again focusing on the development of safe radioactive sources for energy generation. After a hiatus of some 20 years commercial nuclear power plants are being developed globally to satisfy increasing global energy demands. Whether for generation of electrical power or in the production of fission ...

May 2, 2010

By Dynamic Adsorbents, Inc.

Use of various agricultural wastes for the removal of heavy metal ions

There is a need to develop innovative and alternative technologies that can remove toxic heavy metal pollutants from wastewater. In this study, two agricultural residues, cotton stalks and apricot seeds, were used to adsorb copper and lead in solutions. Sorption capacities of agricultural wastes were significantly affected by solution pH, adsorbent mass and adsorbent particle size. The adsorption ...

Oct. 16, 2008

By Inderscience Publishers

Jar Testing for Metals Removal

Using the chart below, find the metal(s) of concern. Determine the best pH range for maximum insolubility for the metal(s). If there is a combination of metals, then concentrate on the metal with the highest concentration and adjust the pH to this point. Determining the Optimum pH for combined metals: Typically facilities have 2, 3 or more different metals in their waste stream. To determine the ...

Jan. 28, 2009

By Integrated Engineers Inc.

Optimizing Metals Removal

Optimizing Wastewater Metals Removal Making Wastewater Metals Insoluble for Easy Removal To remove metals from wastewater, the metals need to be insoluble (not in solution). Many facilities, such as in the ...

Mar. 28, 2007

By Integrated Engineers Inc.

Removal of viruses and indicators by anaerobic membrane bioreactor treating animal waste

Appropriate treatment of agricultural waste is necessary for the protection of public health in rural areas because land-applied animal manure may transmit zoonotic disease. In this study, we evaluated the potential of using a pilot anaerobic membrane bioreactor (AnMBR) to treat agricultural waste. The AnMBR system, following a conventional complete mix anaerobic digester (CMAD), achieved high ...

May 14, 2008

By Soil Science Society of America (SSSA)

Using ‘TransMembraneChemiSorption’ (TMCS) for Ammonia Removal from Industrial Waste Waters

Dissolved gases like NH3, H2S or NOx in waste water lead to contamination in the sewage system and high treatment costs for municipal waste water treatment plants. This translates into high penalty fees that are paid by the company discharging these contaminates into the sewage stream. In many cases a membranebased water treatment system can be justified because of a favorable pay back time. ...

Oct. 19, 2009

By 3M Membrane Filtration (formerly Membrana)

Removal of hexavalent chromium from aqueous solution by lignocellulosic solid wastes

The batch removal of Cr(VI) from aqueous solution using lignocellulosic solid wastes such as sawdust and pine leaves under different experimental conditions was investigated in this study. The influence of pH, temperature, contact time, initial concentration of Cr(VI) and particle size on the chromium removal was investigated. Adsorption of Cr(VI) is highly pH-dependent and the results indicate ...

Jun. 24, 2006

By Center for Environment and Energy Research & Studies (CEERS)

Adsorptive removal of As(III) from aqueous solution by waste litchi pericarps

The present study investigated the removal of arsenite anions (AsO33−, referred to as As(III)) from aqueous solutions by waste litchi pericarps (LPs). Influential factors such as the adsorbent dose, contact time, solution pH, and initial As(III) concentration were investigated. The optimum conditions for As(III) adsorption by the LPs occurred at a contact time of 60 min, adsorbent dose ...

Aug. 12, 2016

By IWA Publishing

Preparation of cationic waste paper and its application in poisonous dye removal

Cationic paper was prepared by reaction of paper with 2,3-epoxypropyltrimethylammonium chloride in aqueous suspension, and tested as low-cost adsorbent for wastewater treatment. The experimental results revealed that anionic dyes (Acid Orange 7, Acid Red 18, and Acid Blue 92) were adsorbed on the cationic paper nicely. The maximum amount of dye Acid Orange 7 adsorbed on cationic paper was 337.2 ...

Jun. 10, 2013

By IWA Publishing

Unpleasant Odors Successfully Removed Using Biological Waste Water Treatment

System designed by Dresden DAS Environmental Expert successfully treats landfill leachate from hazardous waste landfill in Grumbach, Germany DAS Environmental Expert has designed a system for the treatment of landfill leachate that currently treats the wastewaters of the AMAND Umwelttechnik Grumbach ...

Feb. 23, 2016

By DAS Environmental Expert GmbH

Zero Waste - Zero Waste - Zero Waste

The Planning Group of the Zero waste International Alliance defines zero waste as: “Zero waste is a goal that is ethical, economical, efficient and visionary, to guide people in changing their lifestyles and practices to emulate sustainable natural cycles, where all discarded materials are designed to become resources for other use.” I recently posted this question on ...

Jul. 25, 2012

By ABCOV Companies , LLC

Pesticide removal from wastewater

In this study, the removal of 2,2 ? dichlorovinyl ? o,o ? dimethyl phosphate (DDVP) from wastewater by adsorption was carried out. DDVP is an organophosphorus insecticide widely used in agriculture in Turkey. Adsorbents used in the study were agricultural waste straw, wood chips and ground corncobs. Adsorption of DDVP onto these materials from wastewater was evaluated by using a batch system. ...

Aug. 28, 2007

By Inderscience Publishers

Improving the sustainability of source removal

Abstract:There is a growing recognition of the importance of making hazardous waste remediation more sustainable, and thereby minimizing its economic, environmental and social impacts. The attention of sustainable remediation practitioners has thus far been focused on remediation of lower concentration targets, such as dissolved plumes, where reliance on green techniques that mimic naturally ...

Feb. 28, 2013

By TerraTherm - a Cascade Company

Nitrate Removal by Countercurrent Ion Exchange

Nitrate removal technology by continuous countercurrent ion exchange from potable water. High flow capacity, low waste generation. This ICHEM award winning technology is the industry standard used in the United Kingdom. More than 20 installations installed. PuriTech's patented multi-port valve is at the center of each production skid. At average, each unit produces a maximum waste ...

Oct. 31, 2010

By PuriTech Ltd

The removal of thermo-tolerant coliform bacteria by immobilized waste stabilization pond algae

This study investigated the potential of laboratory- scale columns of immobilized micro-algae to disinfect effluents using thermo-tolerant coliforms (TTC) as a model system. Cells of a Chlorella species isolated from a waste stabilization pond complex in Northeast Brazil were immobilized in calcium alginate, packed into glass columns and incubated in contact with TTC suspensions for up to 24 ...

Feb. 28, 2011

By IWA Publishing

Removal of methylene blue by adsorption on aluminosilicate waste: equilibrium, kinetic and thermodynamic parameters

An aluminosilicate waste (AW) was investigated as adsorbent for methylene blue (MB) dye. AW was characterized by petrography, X-ray diffractometry, X-ray fluorescence, scanning electron microscopy, thermogravimetry and zeta potential measurements. It was found that AW contains kaolinite, and other minor components such as quartz, muscovite, smectite, siderite, pyrite and organic compounds. The ...

Sep. 11, 2016

By IWA Publishing

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