Composting organic residues: Trace metals and microbial pathogens

2001 ◽  
Vol 81 (3) ◽  
pp. 357-367 ◽  
Author(s):  
S. Dumontet ◽  
H. Dinel ◽  
M. Schnitzer ◽  
T. Paré ◽  
A. Scopa
Keyword(s):  
Trace Metals ◽  
Agricultural Production ◽  
Agricultural Soils ◽  
Microbial Pathogens ◽  
Organic Residues ◽  
Household Activities ◽  
Organic Fractions ◽  
Micro Organisms ◽  
Current Guidelines

Industrialized societies are responsible for increasing environmental pollution by trace metals, and pathogenic micro-organisms associated with products and wastes of industrial processes and agricultural production, as well as household activities. The objective of this paper is to discuss the effect of composting on the behavior of trace metals and pathogenic micro-organisms, and to present the latest finding on sanitizing and stabilizing organic fractions and trace metals in composted biosolids. Evidence provided by long-term scientific studies in North America and Europe on toxic effects of trace metals on soil micro-organisms and on pathogenic micro-organisms suggests that revisions of the current guidelines on sludge applications on agricultural soils are needed to protect long-term soil fertility. In addition, the antagonism between harmful characteristics of biosolids and their usefulness for agriculture and land reclaiming purposes could be mitigated by using efficient composting treatments. The production and use of harmless organic wastes should be one of our highest priorities in order to protect our health and environment, and to hand over a sustainable agriculture to future generations. Key words: Composting, biosolids, pathogenic micro-organisms, trace metals, sanitization

scholarly journals Long-Term Biosolids Application on Land: Beneficial Recycling of Nutrients or Eutrophication of Agroecosystems?

Soil Systems ◽  
2022 ◽  
Vol 6 (1) ◽  
pp. 9
Author(s):  
Murray B. McBride
Keyword(s):  
Trace Metals ◽  
Organic Carbon ◽  
Nutrient Loading ◽  
Agricultural Soils ◽  
Soil Health ◽  
Water Soluble ◽  
Amended Soils ◽  
The Impact ◽  
Biosolids Application

The impact of repeated application of alkaline biosolids (sewage sludge) products over more than a decade on soil concentrations of nutrients and trace metals, and potential for uptake of these elements by crops was investigated by analyzing soils from farm fields near Oklahoma City. Total, extractable (by the Modified Morgan test), and water-soluble elements, including macronutrients and trace metals, were measured in biosolids-amended soils and, for comparison, in soils that had received little or no biosolids. Soil testing showed that the biosolids-amended soils had higher pH and contained greater concentrations of organic carbon, N, S, P, and Ca than the control soils. Soil extractable P concentrations in the biosolids-amended soils averaged at least 10 times the recommended upper limit for agricultural soils, with P in the amended soils more labile and soluble than the P in control soils. Several trace elements (most notably Zn, Cu, and Mo) had higher total and extractable concentrations in the amended soils compared to the controls. A radish plant assay revealed greater phytoavailability of Zn, P, Mo, and S (but not Cu) in the amended soils. The excess extractable and soluble P in these biosolids-amended soils has created a long-term source of slow-release P that may contribute to the eutrophication of adjacent surface waters and contamination of groundwater. While the beneficial effects of increased soil organic carbon on measures of “soil health” have been emphasized in past studies of long-term biosolids application, the present study reveals that these benefits may be offset by negative impacts on soils, crops, and the environment from excessive nutrient loading.

scholarly journals Effects of co-composted cow manure and poultry litter on the extractability and bioavailability of trace metals from the contaminated soil irrigated with wastewater

2019 ◽  
Vol 10 (1) ◽  
pp. 17-29
Author(s):  
Bushra Haroon ◽  
Amjad Hassan ◽  
Arshad Mehmood Abbasi ◽  
An Ping ◽  
Shao Yang ◽  
...  
Keyword(s):  
Trace Metals ◽  
Contaminated Soil ◽  
Plant Biomass ◽  
Agricultural Soils ◽  
Poultry Litter ◽  
Wastewater Irrigation ◽  
Plant Residues ◽  
Cow Manure ◽  
Combined Use

Abstract It is generally recognized that agricultural soils accumulate toxic metals after long-term wastewater irrigation. The removal of trace metals (TMs) from the soil is not possible. Therefore, this study investigated the effects of the addition of manure on the extractability and bioavailability of TM from the contaminated soil after wastewater irrigation. Soils samples were treated with co-composted cow manure (CM) and poultry litter (PL) at 10 and 20 t ha−1. The study showed that addition of manure enhanced fenugreek biomass and reduced TM uptake depending on the combination of composted manures used. TM concentrations in the fenugreek shoots varied in the order of Pb > Ni > Zn > Cu > Cd. A higher amount of manure mixture especially composted with the privet and cypress residues decreased the extractability of TM from the contaminated soil. Soils amended with PL reduced TM concentrations more than CM; this is also true for the plant uptake. The variation of TM in plants was positively associated with their concentrations in the soil and adversely related to the plant biomass. This study confirmed that the combined use of composted manure with plant residues can be an effective addition for ameliorating the TM pollution in soils and crops.

scholarly journals Impact Assessment of the Long-Term Fallowed Land on Agricultural Soils and the Possibility of Their Return to Agriculture

Agriculture ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 148
Author(s):  
Małgorzata Kozak ◽  
Rafał Pudełko
Keyword(s):  
Agricultural Production ◽  
Agricultural Land ◽  
Agricultural Soils ◽  
Arable Land ◽  
Nutrient Content ◽  
Soil Conditions ◽  
Positive Assessment ◽  
Large Acreage ◽  
The Impact

Agricultural land abandonment is a process observed in most European countries. In Poland and other countries of Central and Eastern Europe, it was initiated with the political transformation of the 1990s. Currently, in Poland, it concerns over 2 million ha of arable land. Such a large acreage constitutes a resource of land that can be directly restored to agricultural production or perform environmental functions. A new concept for management of fallow/abandoned areas is to start producing biomass for the bioeconomy purposes. Production of perennial crops, especially on poorer soils, requires an appropriate assessment of soil conditions. Therefore, it has become crucial to answer the question: What is the real impact of the fallowing process on soil, and is it possible to return it to production at all? For this purpose, on the selected fallowed land that met the marginality criteria defined under the project, physicochemical tests of soil properties were carried out, and subsequently, the results were compared with those of the neighboring agricultural land and with the soil valuation of the fallow land, which was conducted during its past agricultural use. The work was mainly aimed at analyzing the impact of long-term fallowing on soil pH, carbon sequestration and nutrient content, e.g., phosphorus and potassium. The result of the work is a positive assessment of the possibility of restoring fallowed land for agricultural production, including the production of biomass for non-agricultural purposes. Among the studied types of fallow plots, the fields where goldenrod (Solidago L.—invasive species) appeared were indicated as the areas most affected by soil degradation.

scholarly journals The Distribution of Trace Metals in Roadside Agricultural Soils, Thailand

2019 ◽  
Vol 16 (5) ◽  
pp. 714 ◽  
Author(s):  
Nattanan Krailertrattanachai ◽  
Daojarus Ketrot ◽  
Worachart Wisawapipat
Keyword(s):  
Trace Metals ◽  
Agricultural Production ◽  
Metal Contamination ◽  
Agricultural Soils ◽  
Contamination Factor ◽  
Traffic Density ◽  
Road Maintenance ◽  
Trace Metal Contamination ◽  
The Road ◽  
Total Concentrations

Vehicle emissions have been known to cause trace metal contamination in soils. The extent of such contaminations in soils, and of the effects of traffic density and distance from highways on the concentration of trace metals in roadside agricultural soils is largely unknown. This study examined the total concentrations of common trace metals (Cd, Co, Cr, Cu, Ni, Pb, V, and Zn) in roadside agricultural soils from Thailand with diverse traffic densities (approximately 30–200 million vehicles/kilometer/year), roadside distances (0, 10, 20, 50, and 100 m from the road edge), and crops (rice, maize, and sugarcane). Cadmium, Cu, Pb, and Zn concentrations significantly decreased with increasing distance away from the roads (p < 0.05). However, the concentrations of these metals were not correlated with traffic density, probably due to extensive road maintenance and expansion. The contamination factor demonstrated that the road edge soils were moderately- to highly-polluted with Cd, Cu, Pb, and Zn. The safest distance to minimize metal pollution for agricultural production is proposed to be greater than 10 m away from the road edge.

METHODOLOGY OF STRATEGIC MANAGEMENT IN THE AGRO-INDUSTRIAL COMPLEX

2021 ◽  
Vol 1 (5) ◽  
pp. 39-54
Author(s):  
А. M. NEKHLANOVA ◽  
Keyword(s):  
Strategic Management ◽  
Agricultural Production ◽  
Digital Technologies ◽  
Industrial Complex ◽  
Food Markets ◽  
Dynamic Changes ◽  
National Importance ◽  
Intensive Development ◽  
Global Food

The article presents the results of a study of the methodology of strategic management in the agro-industrial complex. In the context of dynamic changes in the external environment, the intensive development of global food markets, the accelerated introduction of digital technologies, biotechnologies, and genetic engineering, strategic management of the agro-industrial complex is an urgent scientific problem of national importance. The presented methodology takes into account the influence of the peculiarities of agricultural production on the formation of a strategic management system in the agro-industrial complex and allows the complex to function successfully in the long term.

Socio-engineering arrangement of the village — the basis of rural development

2021 ◽  
pp. 8-21
Author(s):  
Kh. B. Dusaev ◽  
A. Kh. Dusaeva
Keyword(s):  
Rural Development ◽  
Social Development ◽  
Rural Areas ◽  
Rural Population ◽  
Agricultural Production ◽  
Orenburg Region ◽  
Dynamic Development ◽  
The Village ◽  
Monetary Income

The article analyzes the number, employment and dynamics of monetary income of the population of the Orenburg region for a long-term period. The production of social and engineering arrangement of rural territories of the region for a number of years is analyzed in detail. Negative destructive changes and trends in employment and social development of rural areas are revealed. The directions of improvement and dynamic development of agricultural production, rural areas, and employment of the rural population are proposed.

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