scholarly journals Growth Response and Mineral Uptake of Vegetable Transplants Grown in a Composted Sewage Sludge Amended Medium.

1987 ◽  
Vol 5 (3) ◽  
pp. 107-111
Author(s):  
A. Falahi-Ardakani ◽  
J.C. Bouwkamp ◽  
F.R. Gouin ◽  
R.L. Chaney

Six vegetable species, broccoli, cabbage, lettuce, eggplant, pepper, and tomato plants were grown for 8 wks on a medium of composted sewage sludge (compost), perlite, and peat (equal parts by volume). P, Ca, and Mg were adequate for the growing period, but accumulation of N and K did not increase after the 6th wk after transplanting. Cabbage and broccoli accumulated greater amounts of N and K from the medium and could be successfully grown in the medium without supplemental fertilization. Zn and Cd, potentially hazardous heavy metals present in compost, did not reach excessive levels for either plant nutrition or human consumption.

1987 ◽  
Vol 5 (3) ◽  
pp. 112-115
Author(s):  
A. Falahi-Ardakani ◽  
F.R. Gouin ◽  
J.C. Bouwkamp ◽  
R.L. Chaney

Six species of vegetable transplants were grown in market packs filled with peat moss, perlite and screened sewage sludge compost (equal parts by vol.). Compost was made from lime-dewatered sludge and woodchips. Seedlings were fertilized at 1, 2, 3 and 4 wks after transplanting in single, split and multiple applications of varying levels of N and K in factorial combinations. Fertilizer applications could be delayed 1 to 2 wks after transplanting without a loss of top growth. Lettuce, broccoli and cabbage plants were grown to marketable size with only N fertilizer. However, eggplants, tomato and pepper plants grew best when fertilized with both N and K. Acceptable levels of P, Ca, Mg, Md, Zn and Fe, as measured in tissues, were provided by the growth medium and tissue Cd levels wete within acceptable limits.


1988 ◽  
Vol 6 (4) ◽  
pp. 130-132
Author(s):  
A. Falahi-Ardakani ◽  
J.C. Bouwkamp ◽  
F.R. Gouin ◽  
R.L. Chaney

Lettuce, Lactuca sativa L. ‘Summer Bibb’ and tomato, Lycopersicon esculentum Mill. ‘Westover’ were grown 4 weeks in plastic market packs (MP) in 3 experimental media and a commercially available (Maryland Mix) control. The experimental media were prepared by combining equal parts, by volume of: 1) screened composted sewage sludge (CSS) (made from lime dewatered ferric chloride treated sewage sludge and wood chips), peat moss (PM), and perlite (PL) (CSS-PM-PL); 2) CSS, PM, and vermiculite (VL) (CSS-PM-VL); and 3) CSS-PL-VL. A commercially prepared medium, Maryland mix consisting of silt loam, peat, perlite, and vermiculite (1:2:1:1 by vol) was used as a control. The market packs containing 6 transplants each, were arranged in a completely randomized design and replicated 4 times. One set of seedlings were grown in Maryland mix and CSS-PM-PL and fertilized at the end of the 1st, 2nd, and 3rd week after transplanting with a commerical 20N-8.6P-16.6K (20-20-20) fertilizer. Another set of seedlings were grown for 4 weeks in the control mix and 3 experimental media and fertilized at 1st and 3rd week after transplanting with only N fertilizer. For both lettuce and tomato plants, only 270 mg of N per MP per growing period produced marketable size transplants when grown in the CSS-PM-VL medium. These seedlings had no toxic levels of Zn, Cd, Pb, and Ni and contained adequate N, P, K, Ca, Mg, Mn, Fe, and Cu as compared to plants grown in the control medium.


1987 ◽  
Vol 19 (12) ◽  
pp. 281-286 ◽  
Author(s):  
Y. Kurihara ◽  
T. Suzuki

The effects of the application of reed-sewage sludge compost on the heavy metal incorporation and the growth of young snails born from the adult mud snails, Cipanqopaludina chinensis malleata REEVE, put into submerged paddy soil were investigated. The biomass and growth of the snails in paddy soil with compost were superior to those in soil without compost. The Zn and Cu concentrations in the flesh portion of snails were extremely high as compared with those in the paddy soil surrounding the snails. This may be because snails ingest sewage sludge which is a main organic component of the composts and sewage sludge usually contains large amounts of Zn and Cu, suggesting that this type of snail may be useful in eliminating sewage sludge and Zn and Cu in paddy soil when composted sewage sludge has been applied.


2010 ◽  
Vol 2 (5) ◽  
pp. 87-92
Author(s):  
Milda Radžiūtė ◽  
Audronė Matusevičiūtė

Sewage dump is the main organic waste component accumulating in water treatment companies, and therefore the utilization of dump remains a burning issue. Fertilization is the most popular and cheapest way of using sewage dump a part of which is intended for agriculture in most European countries for composting purposes. Sewage dump or its compost are suitable for fertilizing the upper layers of the soil in cases the concentration of heavy metals is not greater than sanitarian standards can tolerate. The examinations were carried out using different waste dump rates from Vilnius water treatment facility in willow (Salix viminalis) grown cultivated fields. The analysis of the soil was executed after one and two years following the fertilization process. The obtained results indicate that waste dump is a valuable organic fertilizer which contains small amounts of heavy metals. Separate heavy metals migrate from sewage sludge compost to plants differently. It was noted that the concentration of heavy metals in willows was greater (except for Pb and Cd) than that in the soil.


2001 ◽  
Vol 44 (10) ◽  
pp. 95-100 ◽  
Author(s):  
K.-Y. Chiang ◽  
S.-D. Yoi ◽  
H.N. Lin ◽  
K.-S. Wang

This study investigated the stabilization of heavy metals in a sewage sludge composting process using kaoline addition. The results indicate that the temperature increased rapidly to the thermophilic phase (>55°C) at day 1. The additives enhanced the rate of biodegradation and microbial activity during the co-composting process. The changes in pH (ranging from 8 to 8.5) and electrical conductivity (EC) (≤3 mS/cm) were in compliance with the best conditions during the co-composting process. The C/N ratio was determined in each co-compost sample as an indicator of the co-compost maturity. From the end product of the co-compost experiment, changes in the ratios indicate that the additives promote the co-compost maturation rate. Based on the physicochemical characteristics of the co-compost, the potential use for sewage sludge resource recovery as manure is suggested. The total concentrations of Pb, Cd, Cr, Cu, and Zn in the co-compost product were far below the limit values for agricultural use. The leachability of Pb, Cu, and Cr decreased with increasing co-composting time. That is, the kaoline additive has an inhibitory capacity for leaching heavy metals. The Cd concentrations in the sludge compost were below the detection limits. Because the total concentration of Zn was high in the sludge compost and most soluble Zn was leachable, the leachability of Zn ranged from 25% to 29%. As a result of the physicochemical characteristics and heavy metal stabilization, the selected additive was shown to improve the sewage sludge compost quality and provide information for agricultural applications.


2006 ◽  
Vol 52 (2) ◽  
pp. 254-254
Author(s):  
Shin-ichiro Mishima ◽  
Akira Kawasaki ◽  
Mitsuo Komada

Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 1-14
Author(s):  
Dávilla Alessandra Da Silva Alves ◽  
Isabela Seixo De Brito Louzada ◽  
Márcio Henrique Lanza ◽  
Maria Márcia Pereira Sartori ◽  
Hélio Grassi Filho

USE OF EFFLUENTS AND COMPOSTED SEWAGE SLUDGE ON THE BIOAVAILABILITY OF HEAVY METALS IN A TROPICAL SOIL     DAVILLA ALESSANDRA DA SILVA ALVES1; ISABELA SEIXO DE BRITO LOUZADA1; MARCIO HENRIQUE LANZA1; MARIA MARCIA PEREIRA SARTORI2 E HELIO GRASSI FILHO1   1 UNESP - Universidade Estadual Paulista “Júlio de Mesquita Filho”, Faculdade de Ciências Agronômicas (FCA), Departamento de Solos e Recursos Ambientais. Rua José Barbosa de Barros, 1780, CEP 18610-307, Botucatu, SP, Brasil. E-mail: [email protected], [email protected], [email protected], [email protected]; 2 UNESP - Universidade Estadual Paulista “Júlio de Mesquita Filho”, Faculdade de Ciências Agronômicas (FCA), Departamento de Produção e Melhoramento vegetal.  Rua José Barbosa de Barros, 1780, CEP 18610-307, Botucatu, SP, Brasil. E-mail: [email protected].     ABSTRACT   The objective of this study was to evaluate the impacts of irrigation with treated effluent of domestic origin (EET) and different doses of composted sewage sludge (CSS) on soil chemical attributes and heavy metals bioavailability after five years of application. The experimental design was completely randomized, in an arrangement of subdivided plots, with ten replications. The plots contain two types of water for irrigation (EET - treated domestic  effluent and AP- potable water)  and in subplots doses of organic compound (CSS - 50, 100, 150, 200 and 250%), whose fertilizer quantities were based on the nitrogen fertilization required for the cultures, as reference. Results showed that levels of heavy metals As, Ba, Cd, Cr, Cu, Hg, Pb, Ni, Se and Zn did not exceed the limits and the maximum permissible content in the soil. Fertilization with composted sewage sludge associated with effluent irrigation positively impacted soil chemical quality in organic matter content, pH, bases sum (SB), base saturation (V%) and CEC. Responses obtained in this study showed a direct relationship between the type of water for irrigation and doses of compound in all evaluated parameters.   Keywords: reuse, wastewater, biosolids, sustainability.     ALVES, D. A. S.1; LOUZADA, I. S. B.1; LANZA, M. H.1; SARTORI, M. M. P.2; GRASSI FILHO, H.1 UTILIZAÇÃO DE EFLUENTE E LODO DE ESGOTO COMPOSTADO NA BIODISPONIBILIDADE DE METAIS PESADOS EM UM SOLO TROPICAL     RESUMO   Objetivou-se avaliar os impactos da irrigação com o efluente de esgoto tratado (EET) e diferentes doses de lodo de esgoto compostado (CSS) nos atributos químicos do solo e na biodisponibilidade de metais pesados após cinco anos de aplicação. O delineamento experimental foi inteiramente casualizado, em arranjo de parcelas subdivididas, com dez repetições. As parcelas contêm dois tipos de água para irrigação (EET - efluente doméstico tratado e AP - água potável) e nas subparcelas as doses do composto orgânico (CSS - 50, 100, 150, 200 e 250%), cujas quantidades do fertilizante foram baseadas na exigência da adubação nitrogenada para as culturas, como referência. Os resultados mostraram que os teores de metais pesados: As, Ba, Cd, Cr, Cu, Hg, Pb, Ni, Se e Zn não ultrapassaram os limites e o teor máximo permissível no solo. A adubação com lodo de esgoto compostado associado à irrigação do efluente impactou positivamente a qualidade química do solo (teor de matéria orgânica), soma base (SB), saturação por bases (V%) e CTC. As respostas obtidas neste estudo mostraram que houve relação direta entre o tipo de água para irrigação com as doses do composto sobre todos os parâmetros avaliados.   Palavras-chave: reuso, água residuária, biossólido, sustentabilidade.


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