composting Articles | Environmental XPRT

Occurrence of rate limited sorption in stormwater biofiltration systems

Batch and column studies were conducted using synthetic stormwater with mixtures of 0.6 mm glass beads and compost particles of either 1.18 or 4.75 mm. Batch tests showed that rate limited uptake of zinc occurred onto both particle sizes. The column containing the 1.18 mm particles could be fitted by a Freundlich sorption isotherm while the other column exhibited a diffuse front and tailing and ...

Apr. 9, 2012

By Inderscience Publishers

Effect of composting on sludge contaminated with heavy metals from three different tannery streams and their bioavailability to plants

This research was conducted to study the influence of composting on tannery sludge contaminated by Cr, Cd, Zn, Cu, and Ni. Composting of sludge streams was performed in three different piles for 60 days. The results showed that the total concentration of heavy metals was increased with composting, except in the TT-3 sample where the concentrations of Cd, Cu, and Ni did not increase. The ...

Oct. 1, 2010

By Inderscience Publishers

Effect of different forced aeration methods on Vertical temperature distribution and reaction rates During composting

The application of forced aeration, namely in the upflow (blowing) or downflow (suction) mode has been increasing in modern composting processes. These aeration modes often create a sharp temperature gradient in the composting mass. Examples of widely varying temperatures at different layers of controlled and non-controlled aerated piles have been reported frequently (Fernandes et al., 1994; ...

Jan. 2, 1999

By ORBIT e.V.

Food waste global warming potentials of the options

Food waste is Readily biodegradable70% moistureStructurally weak Therefore slumps, becomes anaerobic, putrid, smelly Attracts animals, birds and insects Make a mess Spread disease (Clostridium botulinum - botulism) Not ideal for composting – c.f. greenwasteRespiratory risk to susceptibles if stored indoorsFOG is related but ...

Dec. 18, 2009

By Cambi Group AS

Effect on maturity and nutritional parameters during vermicomposting of Municipal Solid Waste

Municipal solid wastes are the residue facing restrictive legislation with respect to landfill disposal of the biodegradable fraction. One of the frequent problem is that the compost maturity of these residues are not achieved due to the high C : N ratio. The present research work shows the effect on compost maturity and nutritional parameters of compost, during vermicomposting. The various ...

Sep. 19, 2007

By Inderscience Publishers

Bio-conversion of organic waste using composting technologies – a review

Composting is nowadays evolving as a highly technical process for processing organic waste separately replacing landfilling along with municipal solid waste. Vegetable waste with high organic content can be composted to produce nutrient rich material that can work as soil conditioner instead of dumping in open landfills. Various studies reveal that due to high organic content of vegetable waste ...

Dec. 24, 2014

By Inderscience Publishers

Degradation of biodegradable plastics under controlled composting conditions

The management of solid waste is a growing concern in many countries. Municipal solid waste is a major component of the total solid waste generated by society, and the fraction of municipal solid waste made up of plastic materials continues to increase. The composting of plastic materials along with organic wastes will help society to usefully recycle more of its solid waste and divert it from ...

Jan. 2, 1999

By ORBIT e.V.

Odour pollution problems caused by composting activities in flanders: current situation and abatement strategies

In Flanders, garden fruit and vegetable (GFV) waste is selectively collected and composted in 7 composting plants, in six of which aerobic indoor composting is used. In the seventh plant waste is anaerobically digested first followed by an aerobic post-treatment. The total amount of waste composted was about 275 000 tons in 1997 (OVAM, 1999). The nominal capacity of the composting plants varies ...

Jan. 2, 1999

By ORBIT e.V.

Changes of Cu, Zn, and Cd speciation in sewage sludge during composting

The potential toxicity risks from heavy metals depend on their chemical speciation. The four stages of the Tessier sequential extraction method were employed to investigate changes in heavy metal speciation (Cu, Zn, and Cd) of sewage sludge during forced aeration composting, and then to identify whether the composting process would reduce or enhance their toxicities. Throughout the composting ...

Feb. 28, 2007

By IOS Press

Stability measurement of Biosolids Compost by Aerobic Respirometry

Oxygen uptake of biosolids compost was measured during both laboratory and full-scale studies. Aerobic respirometry of solid samples of compost provided a precise measure of microbial activity. There was a noticeable decreasing trend in oxygen consumption over 25 days of composting, thereby indicating increasing stability. Moisture content also was found to affect the compost stability. During ...

Jan. 1, 1995

By Challenge Technology

Evaluation of the biosolids compost maturity in south Isfahan wastewater treatment plant

As a promising alternative for biosolids disposal, land application of composted biosolids has increased in the past decade (Goldstein and Steuteville, 1996). One of the important factors affecting the successful use of biosolids compost for agricultural purposes is stability and maturity it. Application of unstable or immature compost may cause slow plant growth and damage crops by competing for ...

Feb. 26, 2008

By University of Tehran

Home composting of organic waste - part 1: effect of home composter design

Worldwide, health and environmental considerations encourage landfill diversion of the organic fraction (OW) of municipal solid wastes, through alternative such as home composting. Of poor sanitation, and trace element and toxic hydrocarbon content (PAH) documentation, this study compared against a laboratory composter (LR), the performance (temperature regime and compost quality) of four 300 to ...

Sep. 26, 2012

By Inderscience Publishers

Innovative Uses of Compost Bioremediation and Pollution Prevention

Each year agricultural effluents, industrial residues, and industrial accidents contaminate surface waters, soils, air, streams, and reservoirs. A new compost technology, known as compost bioremediation, is currently being used to restore contaminated soils, manage stormwater, control odors, and degrade volatile organic compounds (VOCs). Compost bioremediation refers to the use of a biological ...

Jan. 1, 1997

By US EPA - Environmental Protection Agency

Hydraulics stability of compost-based filtration media

The longevity of compost-based storm water filtration systems has not been widely studied. Hydraulic conductivity measurements of compost amended sand media (20% and 50% v/v) within columns were undertaken. The results show that the filtration media in both columns had a reduction in the total saturated hydraulic conductivity. A tracer test showed there was no blockage due to biological or ...

Dec. 1, 2008

By Inderscience Publishers

Post-composting techniques of digested household waste

Compost making is a method of recycling whereby organic waste is broken down to organic soil with the help of oxygen demanding microorganisms. There are different ways of making compost. Some require more labour and an exact procedure has to be followed; others neglect the precise procedure, which has advantages and disadvantages. Organic material, including toilet waste, can also be recovered to ...

Sep. 19, 2007

By Inderscience Publishers

Review of Biofiltration Review of Biofiltration of Odors and Volatile Organic Compounds (Volatile Organic Compounds (VOCs VOCs)

- Biofiltration of odors and volatile organicshas been practiced successfully for overthree decades - Media used in biofiltration can be categorizedinto two main types: * Natural Media –Compost, soil, peat * Synthetic Media –plastic, ceramic. - Currently, there is no systematic way ofcomparing the cost-performance of ...

Jan. 1, 2003

By PRD Tech, Inc.

Home composting of organic waste - part 2: effect of management practices

Home composting (HC) can produce safe compost if properly managed, while reducing municipal disposal costs. This project investigated the sanitary and safety impact of HC management (with/without bulking agent, batch/weekly feeding, with/without regular mixing) using the Plastic (P) and Wood (W) bins, the Rotary Drum (RD) and the Ground Pile (GP) filled with equal wet volumes of food waste (FW) ...

Sep. 26, 2012

By Inderscience Publishers

Concepts for Environmentally Safe Soil Application of Stabilised Organic Waste

ABSTRACT As a matter of fact, in the past, many mixed municipal solid waste MSW composting plants in various Countries aimed at producing compost for use in farmlands. For instance, in France in 1998, 7% of MSW (1,9 million tonnes out of 26,5 million tonnes) was reportedly being composted in 77 sites for mixed MSW composting [7]. The strategy of producing compost from mixed MSW has rarely been ...

Nov. 17, 2005

By ORBIT e.V.

Co-composting as an oxygen stabilization of an organic fraction of municipal solid waste and industrial sewage sludge

The purpose of this work is to study the characteristics of the co-composting of municipal solid waste (MSW), sewage sludge, grass and sawdust. Differing proportions of biodegradable waste were investigated through changes of temperature, oxygen consumption, organic matters, moisture content, carbon, nitrogen, C/N ratio as well as heavy metals and pathogen microorganisms content. The present ...

Nov. 1, 2013

By IWA Publishing

Assessing Municipal Solid Wastes (MSWs) for composting programmes in rapidly urbanising areas: a case study from Accra, Ghana

A complete understanding of all physico-chemical and biochemical attributes of waste stream materials is necessary for successful implementation of waste management programmes in given context because of their influence on the behaviour of these materials in the natural environment. This paper discusses these properties of Municipal Solid Waste (MSW) to gauge its suitability for sustainable ...

Jul. 7, 2010

By Inderscience Publishers

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