scholarly journals Content of Heavy Metals in Soil and in Pineapple Fertilized With Sewage Sludge

2019 ◽  
Vol 11 (9) ◽  
pp. 281
Author(s):  
Geraldo R. Zuba Junio ◽  
Regynaldo A. Sampaio ◽  
Luiz A. Fernandes ◽  
Rodinei F. Pegoraro ◽  
Victor M. Maia ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Block Design ◽  
Stabilization Process ◽  
Sludge Stabilization ◽  
Treated Sewage ◽  
Randomized Complete Block Design ◽  
Pineapple Fruit ◽  
Favorable Conditions ◽  
Composted Sludge

The usage of sewage sludge in agriculture can increase the levels of heavy metals in the soil, compromising their use as fertilizer. The objective of this study was to evaluate the contamination of soil and pineapple by heavy metals after the application of treated sewage sludge by different forms in three orders of soils under greenhouse conditions. The treatments, in a factorial scheme 7 × 3 were distributed in a randomized complete block design with three replications, corresponding to seven fertilization management: soil without fertilization, chemical fertilization, fertilization with composted sludge sewage, fertilization with vermicompost sewage sludge, fertilization with solarized sewage sludge, fertilization as sewage sludge dried in a Bruthus-Albrecht rotary sludge dryer and fertilization with limed sludge sewage, combined with three orders of soils: Cambisol, Nitisol and Acrisol. The Zn, Cu, Cr, Pb, Ba, Cd, Ni, As and Se contents were analyzed in the soil, in the leaf of greater length (D leaf) and in the fruit pulp of the pineapple. The Acrisol provided more favorable conditions to the increase in the availability and absorption of Pb and As by D leaf and fruit of the pineapple. Fertilization with composted, vermicompost and solarized sewage sludge provided high levels of Pb, As, Zn in leaf D and in the pineapple fruit, relating the interference of sludge stabilization process with the absorption of metals by pineapple fruits.

Biolixiviation des métaux lourds et stabilisation des boues d'épuration : essai en bioréacteur opéré en mode cuvée

1993 ◽  
Vol 20 (1) ◽  
pp. 57-64 ◽  
Author(s):  
R. D. Tyagi ◽  
J. F. Blais ◽  
N. Meunier ◽  
D. Kluepfel
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Suspended Solids ◽  
Elemental Sulfur ◽  
Batch Reactor ◽  
Fecal Coliforms ◽  
Sludge Stabilization ◽  
Sludge Digestion ◽  
Batch Time ◽  
Phosphorus And Potassium

A biological process of heavy metals solubilization and sewage sludge stabilization was studied in a batch reactor of 30-L capacity. The acclimatized leaching microflora was composed of two major groups of thiobacilli: less acidophilic and acidophilic. A batch time of 10 days allows a substantial metal solubilization: cadmium (100%), copper (80%), manganese (80%), nickel (46%), and zinc (100%). The bioleaching process also causes a significative decrease in sludge total suspended solids (25%) and volatile suspended solids (32%), and a considerable reduction (under the detection limit of 10 cfu∙mL−1) of indicator bacteria (total coliforms, fecal coliforms, fecal streptococci). After filtration or centrifugation of the leached sludge, the solubilized metals were precipitated by lime neutralization. The phosphorus and potassium sludge contents were not affected by bioleaching process. These results indicate that the process of sludge digestion and metal leaching can be conducted in parallel in the same reactor. Key words: sewage sludge, heavy metals, bioleaching, stabilization, thiobacilli, elemental sulfur.

scholarly journals Sewage sludge addition modifies soil microbial communities and plant performance depending on the sludge stabilization process

2016 ◽  
Vol 101 ◽  
pp. 37-46 ◽  
Author(s):  
Eva Lloret ◽  
José A. Pascual ◽  
Eoin L. Brodie ◽  
Nicholas J. Bouskill ◽  
Heribert Insam ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Microbial Communities ◽  
Soil Microbial Communities ◽  
Plant Performance ◽  
Stabilization Process ◽  
Soil Microbial ◽  
Sludge Stabilization

scholarly journals Effects of Different Types of Organic Fertilizers on the Nutrients and Anti Nutrients Composition of Amaranthus caudatus and Amaranthus cruentus

2019 ◽  
pp. 1-13
Author(s):  
Kahu Jerry Chechet ◽  
Umeh Chisom Charles
Keyword(s):  
Sewage Sludge ◽  
Block Design ◽  
Poultry Manure ◽  
Organic Fertilizers ◽  
Amaranthus Cruentus ◽  
Amaranthus Caudatus ◽  
Local Variety ◽  
Compound Fertilizer ◽  
Randomized Complete Block Design ◽  
Different Types

Aims: To evaluate the effect of different types of organic fertilizers on the nutrients and anti nutrients composition of Amaranthus caudatus (Samaru local variety) and Amaranthus cruentus (NH84/452). Study Design: A randomized complete block design (RCBD) was used for the experiment. Place and Duration of Study: The experiment was carried out in the nursery of a homestead garden at No 20, Isaiah Balat Street, Sabo GRA, Kaduna State, Nigeria. Methodology: The study consists of seven treatments which includes control (no fertilizer), 5 t ha-1 and 10 t ha-1 poultry manure, 5 t ha-1 and 10 t ha-1 sewage sludge, 35 kg ha-1 and 70 kg ha-1 NPK compound fertilizer and also with two varieties; Amaranthus caudatus (Samaru local variety) and Amaranthus cruentus (NH84/452) with factorial arrangement in a randomized complete block design (RCBD) and replicated three times. At maturity, the leaves were harvested and prepared for laboratory analysis for both nutrients and anti-nutrient composition. Proximate composition was determined according to A.O.A.C protocol. Water soluble vitamins were analyzed using High Performance Liquid Chromatography (HPLC) while the metals were analyzed using Atomic Absorption Spectroscopy (AAS). Results: The ash, moisture, fat, protein, fibre, carbohydrate and energy of the two varieties were found in the range of 2.58 - 3.06%, 78.78 - 80.69%, 1.04 - 1.49%, 7.49 - 9.67%, 2.41 - 3.29%, 3.02 - 6.46% and 54.72 - 61.52 Kcal/100 g respectively. The micronutrients including β-carotene, vitamin C, niacin, riboflavin, iron and zinc were found in the range of 4.79 - 6.68, 14.37 - 40.36, 5.97 - 22.15, 8.37 - 27.99, 10.03 - 13.40 and 5.11 – 941 mg/100 g respectively. The anti-nutrients; tannins, phytate, saponins and oxalate were in the range of 0.33 - 0.69, 0.40 - 0.94, 1.29 - 2.30 and 0.53 - 1.01% respectively Conclusion: Poultry manure provided higher nutrients on the two varieties of Amaranth when compared with sewage sludge and NPK compound fertilizer. While sewage sludge resulted in the plants having higher anti-nutrients. The application of poultry manures at 10 tons/ha is therefore recommended for farmers to use to obtain more nutritious amaranth.

scholarly journals Yield and nutrition of sunflower fertilized with sewage sludge stabilized by different processes

Revista CERES ◽  
2013 ◽  
Vol 60 (5) ◽  
pp. 683-689 ◽  
Author(s):  
Altina Lacerda Nascimento ◽  
Regynaldo Arruda Sampaio ◽  
Luiz Arnaldo Fernandes ◽  
Geraldo Ribeiro Zuba Junio ◽  
João Paulo Carneiro ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Biological Properties ◽  
Chemical Fertilizer ◽  
Control Treatment ◽  
Sludge Treatment ◽  
Stabilization Process ◽  
Sludge Stabilization ◽  
Physical Chemical ◽  
Sunflower Crop ◽  
Sewage Sludge Treatment

The different methods of sewage sludge stabilization modify their physical chemical and biological properties, altering its efficiency when applied in agriculture. The objective of this study was to evaluate the nutrient levels in soil and the yield of sunflower fertilized with sewage sludge stabilized by different processes. The experiment was conducted in Cambisol, with the treatments: control (without fertilization), fertilization with sewage sludge solarized, composted, vermicomposted, limed and chemical fertilizer recommended for sunflower crop. The experimental design a randomized block with four replications. The different methods of sewage sludge treatment did not affect the yield; however, the application of sewage sludge, regardless the stabilization process adopted, was more effective than chemical fertilizer and the control treatment. Overall, fertilization with limed sewage sludge provided higher soil nutrients concentrations, while treatments with composted and vermicomposted sewage sludge showed higher levels of nutrients in the plant.

Potentials of using nanofiltration to recover phosphorus from sewage sludge

2008 ◽  
Vol 57 (5) ◽  
pp. 707-714 ◽  
Author(s):  
C. Niewersch ◽  
C. N. Koh ◽  
T. Wintgens ◽  
T. Melin ◽  
C. Schaum ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Product Recovery ◽  
Phosphorus Recovery ◽  
Nanofiltration Membranes ◽  
Sewage Sludge Ash ◽  
Model Solutions ◽  
Treated Sewage ◽  
Increasing Demand ◽  
Sludge Ash

Due to the depletion of mineral phosphorus resources there is an increasing demand for efficient phosphorus recovery technologies. In this study the potential of nanofiltration to recover phosphorus from pre-treated sewage sludge is investigated. The efficiency of three commercial nanofiltration membranes (Desal 5DK, NP030; MPF34) was tested using model solutions. Desal 5DK showed the best selectivity for phosphorus. A pH of lower than 1.5 was found to be most suitable. Desal 5DK was used on four different sewage sludge ash eluates and on one sewage sludge. In these experiments it was shown that a separation of phosphorus from undesired components such as heavy metals was possible with significant variations in the efficiency for the different ash and sludge types. Additionally the achievable product recovery was investigated with model solutions. A product recovery of 57.1% was attained for pH 1 and 41.4% for pH 1.5.

scholarly journals Effect of Treated Sewage Water Irrigation on Yield and Quality of Mulberry

2021 ◽  
pp. 28-35
Author(s):  
M. Arun Kumar ◽  
S. Chandrashekhar
Keyword(s):  
Block Design ◽  
Nutrient Content ◽  
Sewage Water ◽  
Quality Parameters ◽  
Yield And Quality ◽  
Treated Sewage ◽  
Leaf Yield ◽  
Randomized Complete Block Design ◽  
Leaf N

Aim: Evaluation of raw and treated sewage water irrigation on yield and quality of V1 mulberry. Study design: The Experiment was laid out in a Randomized Complete Block Design (RCBD) with four replications and six treatments comprises of different proportions of raw sewage water, treated sewage water and borewell water. Place and duration of study: The study was conducted during Rabi 2019 in pre-established irrigated V1 mulberry garden at Department of Sericulture, University of Agricultural Sciences, GKVK, Bengaluru, Karnataka, India. Results: Data recorded on quality parameters of mulberry revealed that raw sewage water irrigation significantly increased the leaf nutrient content such as N (3.68%), P (0.4%), K(1.91%), S (0.34%), Zn (30.08 ppm), Mn (103.75 ppm), Fe (373.75 ppm) and also leaf yield (804.31 g/plant) is significantly increased in 100% raw sewage water irrigation, whereas higher leaf Ca (2.06%) and Mg (0.71%) content was recorded in 100% borewell water irrigated plot, and the lowest leaf N (2.82%), P (0.28%), K (1.33%), S (0.17%), Zn (18.03 ppm), Mn (75.75 ppm), and Fe (336.5 ppm) content was found lower in 100% borewell water irrigation.

Processing dewatered sewage sludge using electrokinetic technology

2004 ◽  
Vol 50 (9) ◽  
pp. 205-211 ◽  
Author(s):  
J.Y. Wang ◽  
D.S. Zhang ◽  
O. Stabnikova ◽  
J.H. Tay
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Heterotrophic Bacteria ◽  
Land Application ◽  
Fecal Coliforms ◽  
Treated Sewage ◽  
Carbon Dioxide Evolution Rate ◽  
Removal Of Heavy Metals ◽  
Minor Losses ◽  
Dewatered Sewage Sludge

High content of heavy metals and presence of pathogens in the dewatered sewage sludge have been the main obstacles for land application of sewage sludge-made fertilizer. The aim of this study was to xamine the effects of the innovative electrokinetic (EK) technology on removal of heavy metals from sewage sludge, on the reduction of pathogens, and on sludge chemical characteristics. The results showed that the removal efficiencies for Zn, Cu, Ni, Cr, As and Pb were 94.9%, 95.4%, 89.7%, 67.8%, 31.2% and 18.7%, respectively. Acidification pretreatment of the dewatered sludge for 29 h decreased the content of heterotrophic bacteria from 1.5 × 108 c.f.u./g of wet sludge to 1.1 × 104 c.f.u./g of wet sludge. Although the initial content of total coliforms and fecal coliforms in sewage sludge were 5.8 × 105 c.f.u./g of wet sludge and 4.0 × 105 c.f.u./g of wet sludge, respectively, no viable cells were detected. Minor losses of K and N were detected, but the loss of P was found to be significant in EK treated sewage sludge. The treated sludge has technically considered as very stable based on the carbon dioxide evolution rate.

scholarly journals Effects of Solid Content and Substrate Concentration on Bioleaching of Heavy Metals from Sewage Sludge Using Aspergillus niger

Metals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 994 ◽  
Author(s):  
Shen-Yi Chen ◽  
Sheng-Ying Wang
Keyword(s):  
Heavy Metals ◽  
Aspergillus Niger ◽  
Sewage Sludge ◽  
Metal Removal ◽  
Sucrose Concentration ◽  
Land Application ◽  
Solid Content ◽  
Maximum Efficiency ◽  
Metal Leaching ◽  
Treated Sewage

The presence of heavy metals in sewage sludge not only affects the performance of sludge anaerobic digestion process but also restricts the land application of treated sewage sludge. Therefore, a fungi-mediated bioleaching process for simultaneous metal leaching and sludge digestion by Aspergillus niger was developed to treat the sewage sludge containing heavy metals in this study. The effects of two important parameters, sludge solid content and substrate (sucrose) concentration, on the performance of fungal bioleaching were investigated in this study. The results showed that the rate of pH reduction increased with increasing sludge solid contents and sucrose concentrations. In this study, the efficiency of metal removal decreases in the order of Mn > Zn > Ni > Pb. The efficiencies of metal leaching and solid degradation (SS and VSS) were found to be decreased with an increase of sludge solid content and a decrease of sucrose concentration. At 2 days of reaction time, the maximum efficiency of metal solubilization was 95, 56, 21 and 13% for Mn, Zn, Ni and Pb, respectively.

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