Give priority to abiotic factor of phosphate additives for pig manure composting to reduce heavy metal risk rather than bacterial contribution

2021 ◽  
Vol 341 ◽  
pp. 125894
Author(s):  
Juan Wu ◽  
Wenjie Chen ◽  
Zichao Zhao ◽  
Kui Zhang ◽  
Yabin Zhan ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Pig Manure ◽  
Abiotic Factor

scholarly journals Effect of Pig and Cattle Slurry Application on Heavy Metal Composition of Maize Grown on Different Soils

2018 ◽  
Vol 10 (8) ◽  
pp. 2684 ◽  
Author(s):  
Giorgio Provolo ◽  
Giulia Manuli ◽  
Alberto Finzi ◽  
Giorgio Lucchini ◽  
Elisabetta Riva ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Organic Fertilizer ◽  
Pig Manure ◽  
Soil Enrichment ◽  
Maize Cultivation ◽  
Time Required ◽  
Cu And Zn ◽  
Different Soils

Cattle and pig manure contain useful mineral nutrients (N, P, and K) and are therefore used as organic fertilizer. However, excessive applications of manure can cause environmental problems and threaten animal and human health because these materials also hold significant amounts of heavy metals, particularly Cu and Zn. To assess the potential risk due to the increased concentrations of heavy metals (Cu, Mn, Zn, and Cr) in a harvested crop, two maize hybrids were grown in pots on four different soils with three different fertilisers (urea, pig manure, and cattle manure). Both soil and manure characteristics influenced the heavy metal concentrations in the plant shoots. Organic fertilisation strongly interacted with the soils and, in general, reduced the shoot content of Cu, Mn, and Zn. A preliminary assessment of the heavy metal balance of the agricultural systems based on the intensive livestock production and maize cultivation showed that the potential soil enrichment of the long-term application of livestock manure arises mainly from the application of pig slurries that have a high content of Cu and Zn. The time required to apply an amount of metal that is equal to the initial soil content is 60–300 years for Zn and 240–450 years for Cu, depending on the soil type and the initial heavy metal content.

Emerging applications of biochar: Improving pig manure composting and attenuation of heavy metal mobility in mature compost

2020 ◽  
Vol 389 ◽  
pp. 122116 ◽  
Author(s):  
Mukesh Kumar Awasthi ◽  
Yumin Duan ◽  
Sanjeev Kumar Awasthi ◽  
Tao Liu ◽  
Hongyu Chen ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Mobility ◽  
Pig Manure ◽  
Heavy Metal Mobility ◽  
Mature Compost

Humic acid characterization and heavy metal behaviour during vermicomposting of pig manure amended with 13C-labelled rice straw

2021 ◽  
pp. 0734242X2110359
Author(s):  
Feng Wang ◽  
Wu Yao ◽  
Weiwen Zhang ◽  
Lijuan Miao ◽  
Yifan Wang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Humic Acid ◽  
Rice Straw ◽  
Pig Manure ◽  
Fluorescence Excitation ◽  
Cu Content ◽  
Humification Degree ◽  
Zn Bioavailability ◽  
Ultraviolet Absorption Spectroscopy ◽  
Growth And Reproduction

Aiming to reveal the humification process of organic waste and its contribution to the heavy metal behaviour affected by earthworm activity, it was studied about the variation of humic acid (HA) and heavy metal behaviour during vermicomposting of the mixed pig manure and 13C-labelled rice straw. The results showed that earthworms could well adapt to the culturing environment and feed organic matter for its growth and reproduction, the vermicomposting process increased the content of humic substances (HS), HA, and fulvic acid (FA) in substrate residues, but led to less transformation of HA into FA. The elemental, ultraviolet absorption spectroscopy, Fourier transform infrared (FTIR) and fluorescence excitation–emission matrix (EEM) analysis indicated that vermicomposting led to more aromatic structures and much higher humification degree in HA, whereas less protein, FA-like substances and plastein in HA. Vermicomposting could enhance the total Cu content and decrease Cu/Zn bioavailability in the substrate residues, and vermicomposting especially can help stabilize Cu in the substrate residues by forming more complexed HA–Cu.

Heavy metal availability, bioaccessibility, and leachability in contaminated soil: effects of pig manure and earthworms

2018 ◽  
Vol 26 (20) ◽  
pp. 20030-20039 ◽  
Author(s):  
Feng Li ◽  
Zhian Li ◽  
Peng Mao ◽  
Yingwen Li ◽  
Yongxing Li ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Contaminated Soil ◽  
Pig Manure ◽  
Metal Availability ◽  
Soil Effects

scholarly journals INFLUENCE OF AGROCHEMICAL REHABILITATION ON THE HEAVY METAL MIGRATION TO THE WATER

AGROFOR ◽  
2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Yuri MAZHAYSKIY ◽  
Olga CHERNIKOVA ◽  
Alexey KARPOV ◽  
Otilija MISECKAITE
Keyword(s):  
Heavy Metal ◽  
Chemical Composition ◽  
Organic Amendments ◽  
Black Soil ◽  
Absorption Capacity ◽  
Pig Manure ◽  
Main Role ◽  
Organic Mineral ◽  
High Doses ◽  
Metal Migration

Soil plays the main role in the sustaining life of Earth ecosystems –it is thefundamental foundation of agriculture resources, food security, economy andenvironmental quality. The heavy metal pollution has been increasing inagricultural soils worldwide. For example, Cu is widely used as a pesticide againstfungal and bacterial diseases in crops or as a contaminant in organic amendments,or for irrigation as pig manure or sewage sludge. Soil and water pollution have thegreat impact on food safety and to human health: polluted soils have direct healthrisks, and secondary risk is connected to contamination of water supplies. Thearticlepresents the lysimetric experiment with the chemical composition results.This exploratory study aims to evaluate the influence of agrochemical rehabilitationon the heavy metal migration to the water. The chemical composition of intrasoil water has shown that contaminated black soil has a high absorption capacity ofheavy metals. The bulk of heavy metal brought about in a form of water-solublesalts wasabsorbedand converted by soil colloids of podzolized chernozemintorelatively stable compositions. Results of the analytical research showed thatorganic and organic-mineral systems, where phosphates were used in the averagevolume of 60 kg of Р2О5per hectare a year, reduced intake of cadmium in thesubsurface water. Mineral systems also impeded migration of zinc and copper tothe ground water. On the contrary, high doses of superphosphate in the fertilizersystem increased the leaching of Cd, Pb and Cu to the infiltration waters.

scholarly journals Heavy Metal Resistance in Salmonella Typhimurium and Its Association With Disinfectant and Antibiotic Resistance

2021 ◽  
Vol 12 ◽  
Author(s):  
Ghulam Raza Mustafa ◽  
Ke Zhao ◽  
Xueping He ◽  
Shujuan Chen ◽  
Shuliang Liu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Antibiotic Resistance ◽  
Resistance Gene ◽  
Resistance Genes ◽  
Heavy Metal Resistance ◽  
Metal Resistance ◽  
Feed Additives ◽  
Pig Manure ◽  
Pig Meat ◽  
Cu Resistance

Metals are widely used in animal feed for their growth-stimulating and antimicrobial effects, yet their use may potentially promote the proliferation of antibiotic resistance through co-selection. We studied the prevalence and associations of metal, antibiotic, and disinfectant resistances of 300 Salmonella Typhimurium isolates from pig meat, pig manure, chicken meat, poultry manure, and human stool from Sichuan, China. Seventy four percent of the 300 Salmonella Typhimurium isolates were considered resistant to Cu, almost 50% to Zn and Cr, over 25% to Mn and Cd, and almost 10% to Co. Most of the isolates carried at least one heavy metal resistance gene (HMRG). The Cr-Zn-Cd-resistance gene czcD was carried by 254 isolates and the Cu-resistance genes pcoR and pcoC by 196 and 179 isolates, respectively. Most of the isolates were resistant to at least one antibiotic and almost 80% were multidrug-resistant. The prevalence of resistance to six antibiotics was higher among the pig meat and manure isolates than among other isolates, and that of streptomycin and ampicillin were highest among the pig meat isolates and that of ciprofloxacin and ofloxacin among the pig manure isolates. From 55 to 79% of the isolates were considered resistant to disinfectants triclosan, trichloroisocyanuric acid, or benzalkonium chloride. The metal resistances and HMRGs were associated with resistance to antibiotics and disinfectants. Especially, Cu-resistance genes were associated with resistance to several antibiotics and disinfectants. The transfer of the Cr-Zn-Cd-resistance gene czcD, Cu-resistance gene pcoC, and Co-Ni-resistance gene cnrA into Escherichia coli and the increased Cu-resistance of the transconjugants implied that the resistance genes were located on conjugative plasmids. Thus, the excessive use of metals and disinfectants as feed additives and in animal care may have the potential to promote antibiotic resistance through co-selection and maintain and promote antibiotic resistance even in the absence of antibiotics.

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