Immobilization of Zn and Cu in Conditions of Reduced C/N Ratio during Sewage Sludge Composting Process

Leśniańska, Aleksandra; Janowska, Beata; Sidełko, Robert

doi:10.3390/en15124507

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…The C/N ratio decrease in the former case was quite large (from 248 to 106, which represented a decrease of 60 % related to the initial value), which indicated a distinct degradation rate. However, a theoretical C/N ratio of about 30 was not achieved [26]. This result can be attributed again to the addition of sawdust whose C/N ratio was 325 and thus affected the reduced nitrogen content in the compost [27].…”

Section: 5 Change In the C/n Ratio During Compostingmentioning

confidence: 99%

Biowaste composting process - comparison of a rotary drum composter and open container

Buljac

Vukojević-Medvidović

Sunjic

et al. 2022

Hem Ind

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Composting is recognized as a sustainable waste management approach in which microorganisms treat and stabilize biodegradable waste under aerobic conditions to obtain compost as a final product. In this paper, composting of biowaste in a rotary drum composter (closed system) and an open container (open system) was compared. Temperature, pH, electrical conductivity, a carbon-to-nitrogen mass ratio (C/N ratio) and contents of moisture, carbon and dry and volatile matter, were measured during composting. Results showed decreasing profiles for moisture, volatile matter, and carbon contents, as well as for the C/N ratio, while increasing profiles for the dry matter content and electrical conductivity during composting in both systems. Leachates were formed only during the first three days of composting and were characterized with high organic loads, high ammonia concentrations, low pH, and high conductivity and turbidity. The organic matter content data during the composting process were analysed according to the first order kinetic model. Results suggested that there was a difference in the rate of organic matter decomposition, which was higher when composting in the open vessel than in the rotary drum composter.

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Section: 5 Change In the C/n Ratio During Compostingmentioning

confidence: 99%

Biowaste composting process - comparison of a rotary drum composter and open container

Buljac

Vukojević-Medvidović

Sunjic

et al. 2022

Hem Ind

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“…Imtiaz et al [54], and Marschener [55] showed that compost contributes to Zn uptake through N supply and organic acids, which decrease the soil pH and improve the mobilization of soil Zn in soils. Furthermore, Sujatha and Bhat [56] and Lesnianska et al [57] stated that compost with lower C:N ratio having a higher content of Zn increase Zn concentrations in the shoot.…”

Section: Total Zinc Uptake (G Ha −1 )mentioning

confidence: 99%

Enhancing Zinc Biofortification of Wheat through Integration of Zinc, Compost, and Zinc-Solubilizing Bacteria

2022

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Zinc (Zn) deficiency is a fairly widespread agronomic constraint in many of the world’s cereal (wheat, rice, corn, barley, etc.) production regions. Zinc is an imperative micronutrient required for optimum plant growth and development. Low Zn availability in about 50% of global land has resulted in Zn deficiency in cereal grains. A two-year field experiment was conducted at the Agronomy Research Farm, The University of Agriculture, Peshawar, during Rabi season 2018–19 (Y1) and 2019–20 (Y2) to study the impact of Zn levels (0, 5, 10 and 15 kg Zn ha−1), compost types (control, composted sheep manure (SMC), composted poultry manure (PMC) and farmyard manure compost (FYMC), and Zn-solubilizing bacteria (ZnSB) (with (+) and without (-) on Zn biofortification in order to overcome Zn deficiency. The experiment was set up in three replications in a randomized complete block design. The wheat variety “Pirsabak-2013” was planted in a 30 cm row-to-row spacing. The plot size was kept at 9 cm2, with 10 rows plot−1, and the seed was sown at a rate of 100 kg ha−1. The results showed that ZnSB application increased ShZnC (shoot Zn concentration) to a maximum level of 29.3 mg kg−1, ShZnUp (shoot Zn uptake) to 176.0 g ha−1, SZnUp (straw Zn uptake) to 116.67 g ha−1, and TZnUp (total Zn uptake) to 230.3 g ha−1. In the case of compost types, PMC resulted in maximum grain Zn uptake (GZnUp) (28.9 mg kg−1), ShZnUp (192.9 g ha−1), GZnC (33.4 mg kg−1), GZnUp (125.06 g ha−1), SZnUp (125.26 g ha−1), and TZnUp (250.3 g ha−1). In the case of Zn levels, higher ShZnC (31.5 mg kg−1), ShZnUp (191.3 g ha−1), GZnC (34.4 mg kg−1), SZnC (23.5 mg kg−1), GZnUp (128.98 g ha−1), SZnUp (129.29 g ha−1), and TZnUp (258.3 g ha−1) were calculated with the use of the highest rate of 15 kg Zn ha−1, which was either statistically similar to or followed by 10 kg Zn ha−1. A strong positive correlation was found among uptake by different plant parts (ZnG, ZnS, ShZnUp, GZnUp, SZnUp, and TZnUp). It was concluded that the combined application of PMC and 10 kg Zn ha−1 along with ZnSB (+) improved Zn biofortification and uptake in wheat crop under Zn-deficient soils.

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“…Dairy manure [110] Poultry manure and horse bedding [111] Pig manure [112] Rice straw [113] Sewage sludge, swine manure, sawdust, mushroom residue [114] Sewage sludge, barley straw, wood chips [115] Sewage sludge, kitchen waste and corn stalks [116] Municipal solid waste [117] Vegetable and fruit waste [112] Pine bark [118] 4.3. Phytoremediation with Topsoil Amendment…”

Section: Compost Feedstock Referencesmentioning

confidence: 99%

A Review on Remediation of Iron Ore Mine Tailings via Organic Amendments Coupled with Phytoremediation

Sarathchandra

Rengel

Solaiman

2023

Plants

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Mining operations degrade natural ecosystems by generating a large quantity of mine tailings. Mine tailings remain in dams/open ponds without further treatment after valuable metals such as iron ore have been extracted. Therefore, rehabilitation of tailings to mitigate the negative environmental impacts is of the utmost necessity. This review compares existing physical, chemical and amendment-assisted phytoremediation methods in the rehabilitation of mine tailings from the perspective of cost, reliability and durability. After review and discussion, it is concluded that amendment-assisted phytoremediation has received comparatively great attention; however, the selection of an appropriate phytoremediator is the critical step in the process. Moreover, the efficiency of phytoremediation is solely dependent on the amendment type and rate. Further, the application of advanced plant improvement technologies, such as genetically engineered plants produced for this purpose, would be an alternative solution. Further research is needed to determine the suitability of this method for the particular environment.

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Immobilization of Zn and Cu in Conditions of Reduced C/N Ratio during Sewage Sludge Composting Process

Cited by 8 publications

References 29 publications

Biowaste composting process - comparison of a rotary drum composter and open container

Biowaste composting process - comparison of a rotary drum composter and open container

Enhancing Zinc Biofortification of Wheat through Integration of Zinc, Compost, and Zinc-Solubilizing Bacteria

A Review on Remediation of Iron Ore Mine Tailings via Organic Amendments Coupled with Phytoremediation

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