chemical waste Articles

  • What classifies as water pollution and why is it an issue?

    The UN declared 2005-2015 as the International Decade for Action ‘Water for Life’. Yet each day thousands of people still die as a result of contaminated water. This does not even take into account the millions of organisms that perish every year thank to polluted water sources. Water pollution is a huge issue that is made more so by the fact that unfortunately, water is ...


    By Aquaread Limited

  • Biological Filtration: Future of Drinking Water Treatment

    Water is essential for all human life on the planet, but the fresh water supply is limited and is susceptible to being contaminated by all manner of toxins like arsenic, calcium, and mercury. There are many techniques to remove contaminants, including popular methods that add chemicals to balance others out, but one that not many people understand is biological water system filtration. ...

  • Advantages of Advanced Water Treatment Solutions

    Various advanced water treatment solutions are available for households as well as all types of facilities and industries. Water filtration provides users with valuable benefits that many don’t realize yet. Here are some of the advantages of water treatment solutions like an arsenic treatment system. Improved Water Quality A good arsenic filtration system ...

  • Composting of Municipal Solid Waste through chemical pretreatment

    Composting is one of the viable options for bioprocessing of Municipal Solid Waste (MSW). An important aspect of the composting process is the period required for attaining stability/maturity, and the quality of compost. In order to enhance the rate of degradation and improve the quality of compost, several pretreatments on MSW were investigated. Chemical pretreatment with low strength NaOH ...


    By Inderscience Publishers

  • Waste Incineration Upgrades at the Eastman Chemical Company

    INTRODUCTION Eastman Chemical Company, headquartered n Kingsport, TN, is an international supplier of organc chemicals, fibers anci plastics with annual sales of approximately $46 biNion and approximately 5300 customers worldwide. Tennessee Eastman Division, also located in Kingsport, is the company’s largest manufacturing fadllity The nine hundred acre site contains manutacturing facilities as ...


  • Waste Reduction and Chemical Minimisation: Oxford Panels

    A program involving recycling, waste reduction and waste treatment, is saving Oxford Panels around $1,000 annually on waste removal cost alone. A 30% saving on the cost of raw materials such as thinners and sandpaper, has also been recorded. Importantly, staff morale has increased. They like the reduction in chemicals and pollutants in their workplace and take pride knowing they are actively ...


  • Chemical Recycling of Plastics Waste (PVC and other resins)

     Introduction For several years, debate has raged about the plastic PVC. Industry and environmentalists contend with each other virtually around the world. The environmentalists pursue a ban, industry aims to improve its environmental performance and believes that from an overall viewpoint there is no reason for such far-reaching measures against their material. In this context, the material ...


  • Chemical Reaction for Disposal of Waste Nitrogen Fluoride From Manufacturing Process of Semiconductors

    New technology to make trifluoro-nitrogen (NF3) gas harmless has been developed and a new concept on the removing toxic gas to be used in the process of manufacturing semiconductors is established. The NF3 gas is a toxic and special type of gas that is used in the process of manufacturing semiconductors and its specific application includes the dry etching of semiconductors, cleaning of CVD ...


  • Study on Hazardous Household Waste with a main Emphasis on Hazardous Chemicals

    Introduction The aim of this study is to evaluate national experiences of the management of hazardous products likely to become hazardous household waste (HHW), and to make proposals for strategies for the appropriate management of such products within a lifecycle perspective. The study covers the fifteen Member States and two Accession Countries, namely Hungary and Romania. The data available at ...

  • Recovery of chitin and chitosan from shrimp waste by chemical and microbial methods

    Chitin is a versatile environmentally friendly modern material (Mahmoud, 2007). It is a naturally occurring high molecular weight linear homopolysaccharide composed of N-acetyl-D glucosamine residues in α(1-4) linkage. Chitin and chitin derivatives are biodegradable and biocompatible natural polymers that have been used in virtually every significant segment of the economy (e.g. water ...


    By University of Tehran

  • Chemical, Physical, Mineralogical, Morphology Characteristics of a Thermal Power Plant Washing Waste

    Most of electricity is generated by thermal power plants in Iran. Shahid Rajaee thermal power plant consists of four 250MW natural gas and fuel oil burning units that is located at 100 km west off Tehran. As a result of fuel oil burning in winter time, boilers air heaters are washed and cleaned frequently. The wastewater originating from air heater washing contains suspended ...


    By University of Tehran

  • From Waste in Anodising Plant to New Chemical Product in Sewage Treatment Plants

    Aluminium containing caustic soda used as a pickling agent in the pre-treatment of aluminium before anodising and aluminium containing sulphuric acids used as electrolytes for the formation of oxide layers in anodising plants can be utilised in municipal sewage treatment plants to reduce phosphates and improve precipitation. From the anodiser's point of view, these products are spent once they ...


  • Perfectly clean water without the use of chemicals - Waste Water - Case Study

    Wastewater treatment plant successfully cut down costs and environmental impact Thanks to the disinfectant system from Danish Clean Water, the Danish wastewater treatment plant Fredericia Spildevand is now saving yearly 75.000 € and reusing 70,000 m3 wastewater for cleaning – saving both money and drinking water. The employees at Fredericia Spildevand were quite ...

  • Chemical production and characterisation of activated carbon from waste 'coffee grounds'

    Activated carbon was prepared from ground–coffee in this study. Experimental results reveal that for the ratio (0, 1 ÷ 0, 3) of coffee grounds to activating agents (ZnCl2, H3PO4) has not noteworthy influence. The rise temperature and carbonisation time respectively, in the interval of 500–700°C and ...


    By Inderscience Publishers

  • Field Pilot Study of a Chemical Oxidation Process for Treatment of Industrial Waste Leachate

    Remediation efforts are ongoing at the Avtex Fibers Superfund Site in Front Royal, Virginia. As part of the future remediation of several surface impoundments used for viscose waste disposal during plant operation, it may be necessary to extract contaminated leachate and groundwater for ex-situ treatment and discharge to the Shenandoah River. This waste stream contains varying concentrations of ...

  • The physical, chemical and microbial characteristics of biodegradable municipal waste derived composts

    A comparative study of the physical, chemical and microbial properties of 12 composts sourced from United Kingdom commercial composting plants was carried out. The aim was to ascertain whether these composts could be used as growing media or for application to agricultural land. The composts were produced from either source segregated biodegradable municipal waste (BMW) or mixed municipal solid ...


    By BioCycle Magazine

  • Comparing Capacity Expansion and Waste Minimization Options at a Chemical Manufacturing Facility

    ABSTRACTIndustrial wastewater treatment facilities that are nearing their capacity limit often have a relief option that typically is not available to municipal treatment facilities. That option is to reduce waste loads coming from the production areas by optimizing manufacturing processes so that less waste is generated per pound of product made. In making the decision between reducing waste ...

  • Review of the use of paper clay in the solid waste industry: physical and chemical properties

    The purpose of the paper is to give an overview of utilisation of paper clay, or paper sludge, in Northeastern USA. This paper will outline typical landfill cover practices, overview the paper-making process, discuss the waste generated by the paper industry, and discuss the beneficial uses of paper clays.Keywords: paper clay, paper sludge, landfills, permeability, construction, design, frost, ...


    By Inderscience Publishers

  • Chemical Engineering Magazine Article: Chemical Lifecycle Management

    Chemicals in production and laboratory environments alike have three distinct lifecycle phases: the first is procurement and inventory storage; the second is use in a manufacturing process or research program; and the third is post-use, including onsite handling, removal and beneficial reuse, recycle or disposal. A number of considerations including regulations, safety, material utilization ...


    By Clean Harbors

  • The Chemical Engineer - The Forgotten Earth

    Demand for minerals is on the rise, as is their price. No wonder then that industry is looking to extract minerals from what once would have considered waste. In this article, Dr Tim Johnson of Tetronics explains how plasma technology plays its ...

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