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Ma L, Zhang L, Feng X. Optimization of Eisenia fetida stocking density for biotransformation during green waste vermicomposting. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 187:188-197. [PMID: 39047308 DOI: 10.1016/j.wasman.2024.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/29/2024] [Accepted: 07/14/2024] [Indexed: 07/27/2024]
Abstract
Appropriate stocking density plays an important role in ensuring the stability and improving the overall efficiency of the vermicomposting system. Although some studies have shown that earthworms can degrade lignocellulosic materials, relatively few studies have been conducted on the effect of earthworm stocking density on the degradation of a single green waste (GW) with high lignocellulosic content. Therefore, this study investigated the degradation effect of earthworms on GW at different stocking densities, and assessed the stability and maturity of the whole vermicomposting by comprehensively analysing the changes in physicochemical and biological properties of earthworms during vermicomposting, and by combining the growth of earthworms with a multi-dimensional assessment of the stability and maturity of the whole vermicomposting. In this study, six stocking densities (CK-T5) were set up, namely, no earthworms, 10, 20, 30, 40, and 50 worms/kg. The results showed that compared with the CK (without earthworms), when there were 30 earthworms per kg of GW (i.e. T3), the total nitrogen, total phosphorus, total potassium, organic matter decomposition, bacterial and fungal numbers, and germination index of earthworm compost products increased by 14 %, 29 %, 32 %, 35 %, 42 %, 94 %, and 125 %, respectively. T3 also enhanced the activities of cellulase and alkaline phosphatase. The results were further supported by principal component analysis. Finally, we conclude that when the stocking density of earthworms is appropriate (T3), it not only favours the growth of earthworms, but also positively affects the physicochemical properties of the vermicomposting process, which in turn significantly improves the biodegradation efficiency of GW.
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Affiliation(s)
- Li Ma
- College of Forestry, Beijing Forestry University, Beijing 100083, PR China.
| | - Lu Zhang
- College of Forestry, Beijing Forestry University, Beijing 100083, PR China.
| | - Xueqing Feng
- College of Forestry, Beijing Forestry University, Beijing 100083, PR China.
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Charan K, Bhattacharyya P, Bhattacharya SS. Vermitechnology transforms hazardous red mud into benign organic input for agriculture: Insights on earthworm-microbe interaction, metal removal, and soil-crop improvement. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120320. [PMID: 38377754 DOI: 10.1016/j.jenvman.2024.120320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/20/2024] [Accepted: 02/08/2024] [Indexed: 02/22/2024]
Abstract
Bioremediation of hazardous bauxite residues, red mud (RM), through vermicomposting has yet to be attempted. Therefore, the valorization potential of Eisenia fetida in various RM and cow dung (CD) mixtures was compared to aerobic composting. Earthworm fecundity and biomass growth were hindered in RM + CD (1:1) feedstock but enhanced in RM + CD (1:3). The pH of highly alkaline RM-feedstocks sharply reduced (>17%) due to vermicomposting. N, P, and K availability increased dramatically with Ca and Na reduction under vermicomposting. Additionally, ∼40-60% bioavailable metal fractions were transformed to obstinate (organic matter and residual bound) forms upon vermicomposting. Consequently, the total metal concentrations were significantly reduced with considerably high earthworm bioaccumulation. Microbial growth and enzyme activity were more significant under vermicomposting than composting. Correlation statistics revealed that microbial augmentation significantly facilitated a metal reduction in RM-vermibeds. Eventually, RM-vermicompost stimulated sesame growth and improved soil health with the least heavy metal contamination to soil and crop.
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Affiliation(s)
- Kasturi Charan
- Agricultural and Ecological Research Unit, Indian Statistical Institute, Giridih, 815301, Jharkhand, India
| | - Pradip Bhattacharyya
- Agricultural and Ecological Research Unit, Indian Statistical Institute, Giridih, 815301, Jharkhand, India.
| | - Satya Sundar Bhattacharya
- Soil and Agro Bio-engineering Lab, Department of Environmental Science, Tezpur University, Tezpur, 784 028, India.
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Enebe MC, Erasmus M. Vermicomposting technology - A perspective on vermicompost production technologies, limitations and prospects. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 345:118585. [PMID: 37421723 DOI: 10.1016/j.jenvman.2023.118585] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 06/22/2023] [Accepted: 07/03/2023] [Indexed: 07/10/2023]
Abstract
The need for environmental sustainability while increasing the quantity, quality, and the rate of waste treatment to generate high-value environmental friendly fertilizer products is highly in demand. Vermicomposting is a good technology for the valorisation of industrial, domestic, municipal and agricultural wastes. Various vermicomposting technologies have been in use from time past to present. These technologies range from windrow, small - scale batch vermicomposting to large - scale continuous flow systems. Each of these processes has its own merits and demerits, necessitating advancement in the technology for efficient treatment of wastes. This work explores the hypothesis that the use of a continuous flow vermireactor system of a composite frame structure performs better than batch, windrow and other continuous systems operated in a single container. Following an in-depth review of the literature on vermicomposting technologies, treatment techniques, and reactor materials used, to explore the hypothesis, it was found that vermireactors operating in continuous flow fashion perform better in waste bioconversion than the batch and windrow techniques. Overall, the study concludes that batch techniques using plastic vermireactors predominate over the other reactor systems. However, the use of frame compartmentalized composite vermireactors performs considerably better in waste valorisation.
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Affiliation(s)
- Matthew Chekwube Enebe
- Centre for Mineral Biogeochemistry, University of the Free State, Bloemfontein, 9031, South Africa.
| | - Mariana Erasmus
- Centre for Mineral Biogeochemistry, University of the Free State, Bloemfontein, 9031, South Africa
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Dume B, Hanc A, Svehla P, Michal P, Chane AD, Nigussie A. Composting and vermicomposting of sewage sludge at various C/N ratios: Technological feasibility and end-product quality. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 263:115255. [PMID: 37478570 DOI: 10.1016/j.ecoenv.2023.115255] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 06/05/2023] [Accepted: 07/12/2023] [Indexed: 07/23/2023]
Abstract
Even though sewage sludge (SS) contains a high level of pollutants, it is rich in essential plant nutrients and has the potential to enhance soil fertility. However, the SS must be further treated through pre-composting plus vermicomposting to make it safe for use on food crops. More research and data are needed to determine how different carbon-to-nitrogen ratios (C/N) affect the feasibility and quality of composting vs vermicomposting of SS. Therefore, in this study we comprehensively evaluated the feasibility and end-product quality of compost and vermicompost produced from SS under different C/N ratios. SS was mixed with pelletized wheat straw (PWS) at various proportions to produce C/N ratios of 6:1, 18:1, 28:1, and 38:1, then pre-composted for 14 days followed by vermicomposting using the earthworm Eisenia andrei for 120 days. Agrochemical properties were measured at 0, 30, 60, 90, and 120 days. Results revealed significantly higher levels of agrochemicals in vermicompost compared to compost, including total potassium (37-88%) and magnesium (4.3-12%), nitrate nitrogen (71-98%), available potassium (53-88%), available phosphorus (79%), available magnesium (54-453%), available boron (48-303%), and available copper (2.5-82%). However, lower levels of ammonium nitrogen by (59-85%), available iron (2.3-51.3%), available manganese (29.7-52.2%), available zinc (10.5-29.8%), total carbon (0.75-4.5%), and total nitrogen (1.6-22.2%) were measured. Comparison of the various C/N ratios, showed that vermicompost with an 18:1 C/N ratio outperformed compost and demonstrated the highest earthworm population (165 pieces/kg). Thus, vermicomposting SS at an 18:1 C/N ratio is strongly recommended as a sustainable technology for producing high-quality vermicompost from SS.
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Affiliation(s)
- Bayu Dume
- Czech University of Life Sciences, Faculty of Agrobiology, Food, and Natural Resources, Department of Agro-Environmental Chemistry and Plant Nutrition, Kamycka 129, Prague 16500, Czech Republic.
| | - Ales Hanc
- Czech University of Life Sciences, Faculty of Agrobiology, Food, and Natural Resources, Department of Agro-Environmental Chemistry and Plant Nutrition, Kamycka 129, Prague 16500, Czech Republic
| | - Pavel Svehla
- Czech University of Life Sciences, Faculty of Agrobiology, Food, and Natural Resources, Department of Agro-Environmental Chemistry and Plant Nutrition, Kamycka 129, Prague 16500, Czech Republic
| | - Pavel Michal
- Czech University of Life Sciences, Faculty of Agrobiology, Food, and Natural Resources, Department of Agro-Environmental Chemistry and Plant Nutrition, Kamycka 129, Prague 16500, Czech Republic
| | - Abraham Demelash Chane
- Czech University of Life Sciences, Faculty of Agrobiology, Food, and Natural Resources, Department of Agro-Environmental Chemistry and Plant Nutrition, Kamycka 129, Prague 16500, Czech Republic
| | - Abebe Nigussie
- Jimma University, College of Agriculture, 307, Jimma, Ethiopia
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Keniya B, Patel H, Patel K, Bhatt S, Patel T. Vermistabilization of mango tree pruning waste with five earthworm species: A biochemical and heavy metal assessment. Heliyon 2023; 9:e19908. [PMID: 37810132 PMCID: PMC10559316 DOI: 10.1016/j.heliyon.2023.e19908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 08/23/2023] [Accepted: 09/05/2023] [Indexed: 10/10/2023] Open
Abstract
Mango tree pruning results in high biomass output, which is a serious agricultural and environmental problem. Vermicomposting is a potential, fast and sustainable tool to address these challenges. For sixty days, the experiment was carried out in six vermireactors containing five earthworm species by Eudrilus eugeniae, Eisenia fetida, Aporrectodea rosea, Lumbricus rubellus, and Lampito mauritii, as well as composting (without earthworm) using mango tree pruning waste biomass along with cattle dung as an instant preferred feeding material for earthworms. The pH, TOC, C/N and C/P ratios of the waste were substantially reduced by the earthworm activity. However, after vermicomposting, the levels of macronutrients (N, P, K, Ca, Mg, S) and micronutrients (Fe, Mn, Zn, and Cu) and microbial count substantially increased. The TOC content of waste was reduced by 42-55%, and the C/N of vermicompost ranged from 5.58 to 11.38. The results showed that earthworm fecundity was highest in vermireactors containing Eudrilus eugeniae and Eisenia fetida. The current study was ultimately determine that vermicomposting using Eudrilus eugeniae or Eisenia fetida is an effective strategy for utilising mango tree pruning waste, ensuring environmental sustainability and improving farmer revenue.
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Affiliation(s)
- Bhavik Keniya
- N.M. College of Agriculture, Navsari Agricultural University, Navsari, 396450, Gujarat, India
| | - Hemant Patel
- ASPEE College of Horticulture , Navsari Agricultural University, Navsari, 396450, Gujarat, India
| | - Ketan Patel
- ASPEE College of Horticulture , Navsari Agricultural University, Navsari, 396450, Gujarat, India
| | - Shivam Bhatt
- ASPEE College of Horticulture , Navsari Agricultural University, Navsari, 396450, Gujarat, India
| | - Tushar Patel
- College of Agriculture, Navsari Agricultural University, Bharuch, 393010, Gujarat, India
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Chowdhury SD, Hasim Suhaib K, Bhunia P, Surampalli RY. A Critical Review on the Vermicomposting of Organic Wastes as a Strategy in Circular Bioeconomy: Mechanism, Performance, and Future Perspectives. ENVIRONMENTAL TECHNOLOGY 2023:1-38. [PMID: 37192135 DOI: 10.1080/09593330.2023.2215458] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
AbstractTo meet the current need for sustainable development, vermicomposting (VC), a natural, eco-friendly, and cost-effective technology, can be a wise selection for the bioconversion of organic wastes into value-added by-products. However, no one has tried to establish the VC technology as an economically sustainable technology by exploring its linkage to circular bioeconomy. Even, no researcher has made any effort to explore the usability of the earthworms (EWs) as a protein supplement while assessing the economic perspectives of VC technology. Very few studies are available on the greenhouse gas (GHG) emission potential of VC technology. Still, the contribution of VC technology towards the non-carbon waste management policy is not yet explored. In the current review, a genuine effort has been made to inspect the contribution of VC technology towards the circular bioeconomy, along with evaluating its capability to bioremediate the organic wastes generated from domestic, industrial, and agricultural premises. The potential of the EWs as a protein source has also been explored to strengthen the contribution of VC technology towards the circular bioeconomy. Moreover, the linkage of the VC technology to the non-carbon waste management policy has been comprehensively demonstrated by highlighting its carbon sequestration and GHG emission potentials during the treatment of organic wastes. It has been observed that the cost of food production was reduced by 60--70% by replacing chemical fertilizers with vermicompost. The implication of the vermicompost significantly lessened the harvesting period of the crops, thereby helping the farmers attain higher profits by cultivating more crops in a single calendar year on the same plot. Furthermore, the vermicompost could hold the soil moisture for a long time, lessening the water demand up to 30-40%, which, in turn, reduced the frequency of irrigation. Also, the replacement of the chemical fertilizers with vermicompost resulted in a 23% increment in the grapes' yield, engendering an extra profit of up to 110000 rupees/ha. In Nepal, vermicompost has been produced at a cost of 15.68 rupees/kg, whereas it has been sold to the local market at a rate of 25 rupees/kg as organic manure, ensuring a net profit of 9.32 rupees/kg of vermicompost. EWs embraced 63% crude protein, 5-21% carbohydrates, 6-11% fat, 1476 kJ/100 g of metabolizable energy, and a wide range of minerals and vitamins. EWs also contained 4.11, 2.04, 4.43, 2.83, 1.47, and 6.26 g/kg (on protein basis) of leucine, isoleucine, tryptophan, arginine, histidine, and phenylalanine, respectively, enhancing the acceptability of the EW meal (EWM) as the protein supplement. The inclusion of 3 and 5% EWM in the diet of broiler pullets resulted in a 12.6 and 22.5% increase in their feed conversion ratio (FCR), respectively after one month. Similarly, when a 100% fish meal was substituted by 50% EWM and 50% fish meal, the FCR and growth rate of Parachanna obscura were increased substantially. The VC of maize crop residues mixed with pig manure, cow dung, and biochar, in the presence of Eisenia fetida EWs, yielded only 0.003-0.081, 0-0.17, and 130.40-189.10 g CO2-eq.kg-1 emissions of CO2, CH4, and N2O, respectively. Similarly, the VC of tomato stems and cow dung ensured 2.28 and 5.76 g CO2-eq.kg-1 CO2 emissions of CH4 and N2O, respectively. Additionally, the application of vermicompost at a rate of 5 t/ha improved the soil organic carbon proportion and aggravated carbon sequestration. The land application of vermicompost improved micro-aggregation and cut down the tillage, reducing GHG emissions and triggering carbon sequestration. The significant findings of the current review suggest that VC technology potentially contributes to the concept of circular bioeconomy, substantially negotiates potential GHG emissions, and complies with the non-carbon waste management policy, reinforcing its acceptability as an economically sound and environmentally benevolent organic waste bioremediation alternative.
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Affiliation(s)
- Sanket Dey Chowdhury
- Research Scholar, Environmental Engineering, School of Infrastructure, Indian Institute of Technology Bhubaneswar, Bhubaneswar-752 050, Odisha, India, ,
| | - K Hasim Suhaib
- Research Scholar, Environmental Engineering, School of Infrastructure, Indian Institute of Technology Bhubaneswar, Bhubaneswar-752 050, Odisha, India, ,
| | - Puspendu Bhunia
- Research Scholar, Environmental Engineering, School of Infrastructure, Indian Institute of Technology Bhubaneswar, Bhubaneswar-752 050, Odisha, India, ,
| | - Rao Y Surampalli
- CEO and President, Global Institute for Energy, Environment, and Sustainability, P.O. Box 14354 Lenexa, Kansas 66285, USA,
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Zhou Y, Russel M, Guo W, Zheng Z, Hu C, Li C, Li H. A green approach to copper biodetoxification and sustainable agriculture application by vermicomposting in pig manure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 873:162329. [PMID: 36805068 DOI: 10.1016/j.scitotenv.2023.162329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
A green approach of copper (Cu) contaminated pig manure composting by earthworm Eisenia fetida was optimized. This work aims to assess the relationship between the bio-fertility properties and bioaccumulation of Cu during vermicomposting with five different doses of Cu. The optimal concentration of copper largely promoted the enrichment of nitrogen, phosphorus, and potassium, but the biological activities of earthworms could be inhibited once the Cu concentration exceed the threshold. When the Cu doses at 300 mg kg-1, the nutrient recovery rate (Irecovery) of available nitrogen, phosphorus and potassium reached their highest value, concomitant with largest C/N ratio reduced at 46.01 %. Moreover, nutrients recovery mechanism of total phosphorus increased up to 0.11 % h-1 and higher bioaccumulations in faces and intestine were detected by 1.79 and 0.99, respectively, during vermicomposting. The maximal enzyme activity rates (kmax) indicate that the enzyme activities, such as ROS and SOD, are sensitive bioindicators, which can be used to estimate the stress response of earthworms and Cu biotoxicity. The maximum specific growth rate (μmax) of the actinomycetes (TAct) increased gradually from 0.02 to 0.04 with the increase of Cu doses, but total fungi (TF) showed different response to μmax, which decreased firstly and then increased. It was demonstrated that Cu influenced the gut microbial community to vary the bio-fertility properties and bioaccumulation of Cu in the pig manure. All the findings refer that the vermicomposting could be the sustainable agricultural practices.
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Affiliation(s)
- Yong Zhou
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, College of Life Sciences and Technology, Hubei Engineering University, Xiaogan 432000, PR China.
| | - Mohammad Russel
- School of Ocean Science and Technology, Department of Environmental Ecological Engineering, Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, Dalian University of Technology, Liaoning, Panjin 124221, PR China
| | - Wenwei Guo
- College of Culture and Tourism, Zhangzhou Institute of Technology, Zhangzhou 363000, PR China
| | - Zuhong Zheng
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, College of Life Sciences and Technology, Hubei Engineering University, Xiaogan 432000, PR China
| | - Chao Hu
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, College of Life Sciences and Technology, Hubei Engineering University, Xiaogan 432000, PR China
| | - Changchun Li
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, College of Life Sciences and Technology, Hubei Engineering University, Xiaogan 432000, PR China
| | - Huankai Li
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
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Yang ZY, Wang XJ, Cao Y, Dong QE, Tong JY, Mo MH. Vermicomposting of Pleurotus eryngii spent mushroom substrates and the possible mechanisms of vermicompost suppressing nematode disease caused by Meloidogyne incognita. Heliyon 2023; 9:e15111. [PMID: 37095925 PMCID: PMC10121783 DOI: 10.1016/j.heliyon.2023.e15111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023] Open
Abstract
The mushroom industry produces a large amount of spent mushroom substrate (SMS), which requires a large geographical footprint and causes pollution. Vermicomposting is a low-cost technology for its value in recycling of organic wastes and production of beneficial organic fertilizers. In this study, the changes of physicochemical properties was characterized during vermicomposting of Pleurotus eryngii SMS with cow dung (CD) as amendment. The efficiency and possible mechanisms of vermicompost suppressing disease induced by Meloidogyne incognita was also investigated. Six combinations with different ratios of SMS and cow dung (CD) was included in the vermicomposting using Eisenia fetida. Effect of vermicompost against disease induced by M. incognita on tobacco was conducted under greenhouse condition. And the possible mechanisms of vermicompost suppressing M. incognita was investigated by evaluated the species diversity of nematode-trapping fungi (NTF) in soil, and the defense response enzymes in tobacco. The combination of 65% SMS +35% CD was more suitable for vermicomposting, in which the highest vermicompost production (57%) and earthworm biomass increment (268%) were achieved. Additionally, the reduction in pH, total organic carbon, carbon: nitrogen ratio, and the pronounced elevation in four overall nutrient status were also observed. Soil amended with vermicompost (100:1 w/w) showed 61% control efficiency against nematode disease caused by M. incognita on tobacco, which significantly higher than that of the normal compost (24%). Comparing to the normal compost, the potential mechanism of vermicompost suppressing M. incognita could be rely on promoting species diversity of NTF in soil and enhancing the activities of the defense response enzymes in tobacco plant. Our findings indicate that vermicomposting is a promising technology for recycling of P. eryngii SMS, and the resulting vermicompost as organic fertilizer can be sued for management of the diseases caused by root-knot nematodes. This study establish a sustainable avenue for P. eryngii SMS disposal and a practical manner for controlling pathogens.
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Verma S, Kumar Awasthi M, Liu T, Kumar Awasthi S, Yadav V, Ravindran B, Syed A, Eswaramoorthy R, Zhang Z. Biochar as smart organic catalyst to regulate bacterial dynamics during food waste composting. BIORESOURCE TECHNOLOGY 2023; 373:128745. [PMID: 36796733 DOI: 10.1016/j.biortech.2023.128745] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
The impact of wheat straw biochar (WSB) on bacterial dynamics succession during food waste (FW) composting was analyzed. Six treatments [0(T1), 2.5(T2), 5 (T3), 7.5 (T4), 10 (T5), and 15 %(T6)] dry weight WSB were used with FW and saw dust for composting. At the highest thermal peak at 59 ℃ in T6, the pH varied from 4.5 to 7.3, and electrical conductivity among the treatments varied from 1.2 to 2.0 mScm1. Firmicutes (25-97 %), Proteobacteria (8-45 %), and Bacteroidota (5-50 %) were among the dominate phyla of the treatments. Whereas, Bacillus (5-85 %), Limoslactobacillus (2-40 %), and Sphingobacterium (2-32 %) were highest among the identified genus in treatments but surprisingly Bacteroides was in greater abundance in the control treatments. Moreover, heatmap constructed with 35 various genera in all the treatments showed that Gammaproteobacterial genera contributed in large proportion after 42 days in T6. Additionally, a dynamic shift from Lactobacillus fermentum to higher abundance of Bacillus thermoamylovorans was reported on 42 days of FW composting. Biochar 15 % amendment can improve FW composting by influencing bacterial dynamics.
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Affiliation(s)
- Shivpal Verma
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Tao Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Sanjeev Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Vivek Yadav
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Balasubramani Ravindran
- Department of Environmental Energy and Engineering, Kyonggi University, Yeongtong-Gu, Suwon, Gyeonggi-Do 16227, Republic of Korea
| | - Asad Syed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia
| | - Rajalakshmanan Eswaramoorthy
- Department of Prosthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 600077, India
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China.
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Namaldi O, Azgin ST. Evaluation of the treatment performance and reuse potential in agriculture of organized industrial zone (OIZ) wastewater through an innovative vermifiltration approach. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 327:116865. [PMID: 36450165 DOI: 10.1016/j.jenvman.2022.116865] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 11/01/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Vermifiltration (VF) is a natural and sustainable biofilter that has many advantages, including being energy-free, cost-effective, and allowing ease of application and maintenance. In this study, the effectiveness of a lab-scale VF system was assessed by the removal efficiency of total suspended solids, electrical conductivity, chemical oxygen demand, total nitrogen, total phosphorus, fecal coliform, and heavy metals in organized industrial zones (OIZ) and domestic wastewater (DW) for the first time. Additionally, the reuse suitability of the treated wastewater was determined by comparing different countries' and global irrigational criteria. The lab systems were built with four layers: one worm-bed and three varying filtering materials, and operated at an optimum hydraulic loading rate of 1.8-2 m3/m2/day for 45 days with Eisenia fetida as the earthworm species. The results demonstrated that removal efficiencies of total suspended solids and chemical oxygen demand were found to be 95% and 80% in OIZ wastewater and 90% and 88% in DW, respectively. Total nitrogen and total phosphorus were removed at rates of 69% and 67% in OIZ wastewater, respectively, and 84% and 74% in DW. Besides, the VF system has shown satisfactory removal performance for heavy metals ranging from 51% to 77% in OIZ wastewater that has met Turkish national wastewater discharge limits. Although the final characterization of treated wastewater was suitable, heavy metal and fecal coliform levels have not met many countries' irrigation water quality criteria. To meet global irrigation standards and to enhance the VF performance, further experimental studies should be carried out, including parameters such as bed material type in the reactor, worm type, and different operating conditions.
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Affiliation(s)
- Onur Namaldi
- Department of Environment Engineering, Erciyes University, 38039, Kayseri, Turkey.
| | - Sukru Taner Azgin
- Department of Environment Engineering, Erciyes University, 38039, Kayseri, Turkey; Energy Conversions Research and Application Center, Erciyes University, 38039, Kayseri, Turkey.
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Zhong L, Wu T, Ding J, Xu W, Yuan F, Liu BF, Zhao L, Li Y, Ren NQ, Yang SS. Co-composting of faecal sludge and carbon-rich wastes in the earthworm's synergistic cooperation system: Performance, global warming potential and key microbiome. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 857:159311. [PMID: 36216047 DOI: 10.1016/j.scitotenv.2022.159311] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 09/21/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
Composting is an effective alternative for recycling faecal sludge into organic fertilisers. A microflora-earthworm (Eisenia fetida) synergistic cooperation system was constructed to enhance the composting efficiency of faecal sludge. The impact of earthworms and carbon-rich wastes (rice straw (RS) and sawdust (S)) on compost properties, greenhouse gas emissions, and key microbial species of composting were evaluated. The addition of RS or S promoted earthworm growth and reproduction. The earthworm-based system reduced the volatile solid of the final substrate by 13.19-16.24 % and faecal Escherichia coli concentrations by 1.89-3.66 log10 cfu/g dry mass compared with the earthworm-free system. The earthworm-based system increased electrical conductivity by 0.322-1.402 mS/cm and reduced C/N by 56.16-64.73 %. The NH4+:NO3- ratio of the final faecal sludge and carbon-rich waste was <0.16. The seed germination index was higher than 80 %. These results indicate that earthworms contribute to faecal sludge maturation. Earthworm addition reduced CO2 production. The simultaneous addition of earthworms and RS system (FRS2) resulted in the lowest global warming potential (GWP). The microbial diversity increased significantly over time in the RS-only system, whereas it initially increased and later decreased in the FRS2 system. Cluster analysis revealed that earthworms had a more significant impact on the microbial community than the addition of carbon-rich waste. Co-occurrence networks for earthworm-based systems were simple than those for earthworm-free systems, but the major bacterial genera were more complicated. Highly abundant key species (norank_f_Chitinophagaceae and norank_f_Gemmatimonadaceae) are closely related. Microbes may be more cooperative than competitive, facilitating the conversion of carbon and nitrogen in earthworm-based systems. This work has demonstrated that using earthworms is an effective approach for promoting the efficiency of faecal sludge composting and reducing GWP.
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Affiliation(s)
- Le Zhong
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Tong Wu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jie Ding
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Wei Xu
- General Water of China Co., Ltd., Beijing 100022, China
| | - Fang Yuan
- General Water of China Co., Ltd., Beijing 100022, China
| | - Bing-Feng Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Lei Zhao
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yan Li
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Nan-Qi Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Shan-Shan Yang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
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12
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Alsamhary K. Vermi-cyanobacterial remediation of cadmium-contaminated soil with rice husk biochar: An eco-friendly approach. CHEMOSPHERE 2023; 311:136931. [PMID: 36273604 DOI: 10.1016/j.chemosphere.2022.136931] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 10/03/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
Present study is aimed to evaluate the influence of earthworm (Eisenia fetida), Cyanobacteria (Cylindrospermum stagnale), and rice husk biochar (BC) on cadmium (Cd) detoxification in artificially contaminated soil. The Cd content was kept at 10 mg/kg in factorial design I, coupled with 2% and 0% BC. E. fetida and C. stagnale un-inoculated and inoculated experiments were maintained respectively as negative and positive controls. In factorial design II, E. fetida and C. stagnale were inoculated, along with BC (0% and 2%, denoted as B), without BC (WB), along with four different Cd concentrations (Cd-0, Cd-5, Cd-10, and Cd-20 mg/kg). Results suggest a substantial amount of Cd removal in BC-assisted treatments when compared to negative control-1. Cd (mg/g) in E. fetida tissue ranged from 0.019 (WB2) to 0.0985 (B4). C. stagnale of WB4 (0.036) bioaccumulated the most Cd (mg/g), while B2 showed the least (0.018). The maximum quantity of metallothionein (5.34 μM/mg) was detected in E. fetida of B4 (factorial design - II) and the minimum was claimed in WB1 (0.48 μM/mg) at the end. Earthworm metallothionein protein is a key component in Cd removal from soil by playing an important role in detoxification process. Microbial communities and humic substances were observed in BC-assisted treatments, which aided in Cd-contaminated soil remediation. The present findings suggest that BC (2%) + earthworms + algae could be a suitable remediation strategy for Cd contaminated soil. BC + earthworm + algal-based investigation on heavy metal remediation will be a valuable platform for detoxifying harmful metals in soils.
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Affiliation(s)
- Khawla Alsamhary
- Department of Biology, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia.
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13
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Zhou Y, Li H, Guo W, Liu H, Cai M. The synergistic effect between biofertility properties and biological activities in vermicomposting: A comparable study of pig manure. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 324:116280. [PMID: 36183526 DOI: 10.1016/j.jenvman.2022.116280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/12/2022] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Abstract
Vermicomposting is a resource technology for managing animal excreta, whereas the internal relationships of the process are vital for its wide applications. The present study examined how macronutrient and micronutrient concentrations, microbial communities, and enzymatic activity of pig manure (PM) changed during the composting and vermicomposting processes and their internal interactions. The vermicomposting process increased macronutrients more significantly than composting (32.40% of total available nitrogen, 21.70% of total available phosphorous, and 12.70% of total available potassium). The vermicomposting reduced total organic carbon (7.91%), C/N ratio (61.35%), and humification index (56.47%) more than composting due to the quick decomposition of PM. After continual fertility optimization, the total microbial population, with the exception of total fungi, rose significantly to accelerate organics mineralization and improve macronutrients in vermicomposting compared to composting. Moreover, earthworm addition favored the stabilization of the PM containing higher concentrations of micronutrients after being catalyzed by the enhanced catalase activity and reduced sucrase activity after 90 days of vermicomposting. Principal component analysis and chord plots found that the generated vermicomposting products had higher fertility properties and biological activities induced by the synergistic effect of microorganisms and earthworms. These findings highlight vermicomposting is an eco-friendly management technology for processing PM and can be scaled up for agricultural applications.
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Affiliation(s)
- Yong Zhou
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, College of Life Sciences and Technology, Hubei Engineering University, Xiaogan, 432000, PR China.
| | - Huankai Li
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China.
| | - Wenwei Guo
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
| | - Hui Liu
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Minggang Cai
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
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14
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Dume B, Hanc A, Svehla P, Michal P, Solcova O, Chane AD, Nigussie A. Nutrient recovery and changes in enzyme activity during vermicomposting of hydrolysed chicken feather residue. ENVIRONMENTAL TECHNOLOGY 2022:1-15. [PMID: 36368925 DOI: 10.1080/09593330.2022.2147451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
Chicken feathers are hazardous to the environment because of their poor digestibility and potential as a source of environmental contaminants. However, this waste contains valuable plant nutrients that can be recovered and used to improve soil fertility and agricultural productivity. The objectives of this study were to evaluate how effective vermicomposting is at recovering nutrients and changes in enzymatic activity during vermicomposting of hydrolysed chicken feather residues (HCFR). The study included four treatments with three replications at different HCFR and pelletized wheat straw (PWS) mixing proportions: (T1) 25% HCFR+75% PWS with earthworms, (T2) 25% HCFR+75% PWS without earthworms, (T3) 50% HCFR+50% PWS with earthworms, and (T4) 50% HCFR+50% PWS (w/w) without earthworms. Eisenia andrei was used in the experiment for 120 days. Earthworm treatments recovered more available plant nutrients than non-earthworm treatments by 14% N - NO 3 - (T1); 50% K (T3); 47% Mg (T3); 75% P (T3); 55% B (T3); 34% Cu (T3); 40% Fe (T1); 46% Mn (T3); 11% Zn (T1). However, N - NH 4 + was significantly reduced by -80% (T1). Acid phosphatase, arylsulphatase, alanine aminopeptidase, and leucine aminopeptidase were more active in the treatments with earthworms and positively correlated with P and C: N ratio. Alanine aminopeptidase (3752 µmol AMCA.g-1.h-1) and leucine aminopeptidase (4252 µmol AMCL.g-1.h-1) had higher activities in T3 on day 60 of vermicomposting. As a result, the earthworm treatment recovers more plant nutrients than the non-earthworm treatments, and it can be recommended as a better vermicomposting approach for nutrient recovery from HCFR.
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Affiliation(s)
- Bayu Dume
- Faculty of Agrobiology, Food, and Natural Resources, Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences, Prague, Czech Republic
| | - Ales Hanc
- Faculty of Agrobiology, Food, and Natural Resources, Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences, Prague, Czech Republic
| | - Pavel Svehla
- Faculty of Agrobiology, Food, and Natural Resources, Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences, Prague, Czech Republic
| | - Pavel Michal
- Faculty of Agrobiology, Food, and Natural Resources, Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences, Prague, Czech Republic
| | - Olga Solcova
- Institute of Chemical Process Fundamentals, Czech Academy of Sciences, Prague 6, Czech Republic
| | - Abraham Demelash Chane
- Faculty of Agrobiology, Food, and Natural Resources, Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences, Prague, Czech Republic
| | - Abebe Nigussie
- Jimma University, College of Agriculture, Jimma, Ethiopia
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15
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Patra RK, Behera D, Mohapatra KK, Sethi D, Mandal M, Patra AK, Ravindran B. Juxtaposing the quality of compost and vermicompost produced from organic wastes amended with cow dung. ENVIRONMENTAL RESEARCH 2022; 214:114119. [PMID: 36007568 DOI: 10.1016/j.envres.2022.114119] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 07/11/2022] [Accepted: 08/13/2022] [Indexed: 06/15/2023]
Abstract
Composting is a propitious technology to change bio-degradable solid waste into organic fertilizers. Considering this, five types of organic waste viz., leaf litter (Tectona grandis), water hyacinth (Eichhornia crassipes), cauliflower waste (Brassica oleracea var. botrytis), coir pith, and mushroom spent waste were composted with and without the use of earthworm (Eisenia fetida). The reaction (pH) and electrical conductivity of compost and vermicompost ranged from 6.98 to 7.45 and 6.97 to 7.36, 0.11 to 0.21 dSm-1, and 0.11 to 0.25 dSm-1, respectively. The chemical oxygen demand both the compost and vermicompost ranged from 687 to 1170 mg l-1 and 633-980 mg l-1 respectively. Cation exchange capacity (CEC) ranged from, 75 to 121 (c mol (p+) kg-1, and 80 to 127 (c mol (p+) kg-1, respectively. The C:N of compost and vermicompost varied from 16:1 to 33:1 and 12:1 to 19:1, respectively. The organic carbon content was decreased (18.3-38.7%), while secondary and micronutrient contents increased over the initial concentration. The NH4+ and NO3- content of compost and vermicompost ranged from 270 to 510 mg kg-1 and 230-430 mg kg-1, 560 to 105 mg kg-1, and 690-1100 mg kg-1, respectively. The nitrification index (NH4+/NO3-) ranged from 0.3 to 0.9 in composts and 0.3 to 0.6 in vermicomposts. The dehydrogenase and urease activity varied from 685 to 1696 μg g-1 hr-1 and 938-2549 μg TPF g-1 day-1 respectively. The bacteria, fungi and actinomycetes population were 2-3, 0.3-0.7 and 3-8 times more in vermicompost over the corresponding compost. This study confirmed that compared to compost, vermicompost showed better nutrients and microbial properties.
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Affiliation(s)
- Ranjan Kumar Patra
- Department of Soil Science and Agricultural Chemistry, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, 751003, India
| | - Denish Behera
- Department of Soil Science and Agricultural Chemistry, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, 751003, India
| | - Kiran Kumar Mohapatra
- Department of Soil Science and Agricultural Chemistry, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, 751003, India
| | - Debadatta Sethi
- Department of Soil Science and Agricultural Chemistry, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, 751003, India.
| | - Mitali Mandal
- Department of Soil Science and Agricultural Chemistry, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, 751003, India
| | - Alok Kumar Patra
- Department of Agronomy, College of Agriculture, Odisha University of Agriculture and Technology Bhubaneswar, 751003, India
| | - Balasubramani Ravindran
- Department of Environmental Energy and Engineering, Kyonggi University, Suwon-si, Gyeonggi-do, 16227, South Korea; Department of Medical Biotechnology and Integrative Physiology, Institute of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Thandalam, Chennai, 602 105, Tamil Nadu, India.
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16
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IndraKumar Singh S, Singh WR, Bhat SA, Sohal B, Khanna N, Vig AP, Ameen F, Jones S. Vermiremediation of allopathic pharmaceutical industry sludge amended with cattle dung employing Eisenia fetida. ENVIRONMENTAL RESEARCH 2022; 214:113766. [PMID: 35780853 DOI: 10.1016/j.envres.2022.113766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 06/09/2022] [Accepted: 06/23/2022] [Indexed: 06/15/2023]
Abstract
The present study aims to vermiremediate allopathic pharmaceutical industry sludge (AS) amended with cattle dung (CD), in different feed mixtures (AS:CD) i.e (AS0) 0:100 [Positive control], (AS25) 25:75, (AS50) 50:50, (AS75) 75:25 and (AS100) 100:0 [Negative Control] for 180 days using earthworm Eisenia fetida. The earthworms could thrive and grow well up to the AS75 feed mixture. In the final vermicompost, there were significant decreases in electrical conductivity (29.18-18.70%), total organic carbon (47.48-22.39%), total organic matter (47.47-22.36%), and C: N ratio (78.15-54.59%). While, significant increases in pH (9.06-16.47%), total Kjeldahl nitrogen (69.57-139.58%), total available phosphorus (30.30-81.56%), total potassium (8.92-22.22%), and total sodium (50.56-62.12%). The heavy metals like Cr (50-18.60%), Cd (100-75%), Pb (57.14-40%), and Ni (100-50%) were decreased, whereas Zn (8.37-53.77%), Fe (199.03-254.27%), and Cu (12.90-100%) increased significantly. The toxicity of the final vermicompost was shown to be lower in the Genotoxicity analysis, with values ranging between (76-42.33%). The germination index (GI) of Mung bean (Vigna radiata) showed a value ranging between 155.02 and 175.90%. Scanning electron microscopy (SEM) analysis showed irregularities with high porosity of texture in the final vermicompost than in initial mixtures. Fourier Transform-Infrared Spectroscopy (FT-IR) spectra of final vermicompost had low peak intensities than the initial samples. The AS50 feed mixture was the most favorable for the growth and fecundity of Eisenia fetida, emphasizing the role of cattle dung in the vermicomposting process. Thus, it can be inferred that a cost-effective and eco-friendly method (vermicomposting) with the proper amendment of cattle dung and employing Eisenia fetida could transform allopathic sludge into a nutrient-rich, detoxified, stable, and mature vermicompost for agricultural purposes and further could serve as a stepping stone in the allopathic pharmaceutical industry sludge management strategies in the future.
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Affiliation(s)
- Soubam IndraKumar Singh
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Waikhom Roshan Singh
- Manipur Pollution Control Board (MPCB), Imphal West, DC Office Complex, Imphal, 795001, Manipur, India
| | - Sartaj Ahmad Bhat
- River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.
| | - Bhawana Sohal
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Namita Khanna
- Department of Physiology, Guru Gobind Singh Medical College, Baba Farid University of Health Sciences, Faridkot, 151203, Punjab, India
| | - Adarsh Pal Vig
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005, Punjab, India; Punjab Pollution Control Board (PPCB), Vatavaran Bhawan, Nabha Road, Patiala, 147001, Punjab, India.
| | - Fuad Ameen
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Sumathi Jones
- Department of Pharmacology, Sree Balaji Dental College and Hospital, Pallikaranai, Chennai, 600100, India
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Ruangjanda S, Iwai CB, Greff B, Chang SW, Ravindran B. Valorization of spent mushroom substrate in combination with agro-residues to improve the nutrient and phytohormone contents of vermicompost. ENVIRONMENTAL RESEARCH 2022; 214:113771. [PMID: 35798270 DOI: 10.1016/j.envres.2022.113771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 06/16/2022] [Accepted: 06/25/2022] [Indexed: 06/15/2023]
Abstract
In recent years, enormous amounts of spent mushroom substrate (SMS) have been generated because of the rapid development of mushroom production. Since the conventional disposal methods of these residues can cause serious environmental problems, alternative waste management techniques are required to ensure sustainable agriculture. However, SMS might be not suitable for vermicomposting when used alone. Therefore, the primary purpose of this study was to investigate the effect of Azolla microphylla (Azolla) biomass, eggshells, fruit peels, and cassava pulp on the biodegradation process of SMS. The results showed the treatments supplemented with cassava pulp and fruit peel waste improved the growth of earthworms, while the carbon-to-nitrogen ratio of these vermicomposts decreased significantly (p < 0.05) due to the improved total nitrogen contents (7.64 g kg-1 and 6.71 g kg-1). Concerning the degradation process and the vermicompost quality, the addition of these agro-residues facilitated the enzyme activities (cellulase, urease, and alkaline phosphatase) and increased the total macronutrient (P, K, Mg, and Ca) and phytohormone (fruit peel waste: AA, GA3, and cytokinin; cassava pulp: cytokinin) contents of the final products compared to the control treatment. On the other hand, Azolla had no additional effect on the fecundity and growth of Eudrilus eugenia. Meanwhile, the treatment supplemented with eggshells was high in Mg (7.15 g kg-1) and Ca (305.6 g kg-1). Overall, the combined decomposition of SMS-based bedding material with Azolla, eggshells, fruit peel waste, and cassava pulp resulted in mature organic fertilizers with improved chemical properties.
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Affiliation(s)
- Supawadee Ruangjanda
- Department of Soil Science and Environment, Faculty of Agriculture, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Chuleemas Boonthai Iwai
- Department of Soil Science and Environment, Faculty of Agriculture, Khon Kaen University, Khon Kaen, 40002, Thailand; Integrated Land and Water Resource Management Research and Development Center in Northeast Thailand, Khon Kaen University, Thailand.
| | - Babett Greff
- Department of Food Science, Faculty of Agricultural and Food Sciences, Széchenyi István University, 15-17 Lucsony Street, 9200 Mosonmagyaróvár, Hungary
| | - Soon Woong Chang
- Department of Environmental Energy & Engineering, Kyonggi University, Suwon-si, Gyeonggi-do, 16227, South Korea
| | - Balasubramani Ravindran
- Department of Environmental Energy & Engineering, Kyonggi University, Suwon-si, Gyeonggi-do, 16227, South Korea; Department of Medical Biotechnology and Integrative Physiology, Institute of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Thandalam, Chennai, 602 105, Tamil Nadu, India
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18
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Van Thinh N, Chung NT, Luong LTM, Chinh PM, Anh PP, Huy NT, Thuy DT, Thai PK. Assessment of total concentrations of heavy metals in industrial sludges from the North of Vietnam and their potential impact on the ecosystem. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:42055-42066. [PMID: 34822083 DOI: 10.1007/s11356-021-17619-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
Industrial sludges from wastewater treatment plants of industrial parks and a drinking water treatment plant in northern Vietnam were investigated in this study. The total concentrations of heavy metals (As, Cd, Cu, Cr, Ni, Hg, Pb, Zn) and other elements (Mn, Pd, Sb, V) in the sludges were measured using the ICP-MS method. In addition, the surface characteristics of the samples were analyzed using SEM-EDS and FTIR techniques. According to Vietnam's current waste management regulation, the investigated industrial sludges belonged to the hazardous waste category (with Pb concentration > 300 µg/g). In contrast, the sludge from the drinking water treatment plant had a low content of heavy metals and toxic elements. The sequential extraction method revealed that the heavy metals in the industrial sludges exhibited higher mobilization forms (exchangeable and reduceable fractions) than those in the drinking water sludges. The mobilization ability of heavy metals is probably related to the surface function groups of the sludges, which were dominated by (-COOH) and (-OH) groups. The potential ecological risk assessment calculations indicated that the industrial sludges had high potential risk (with the RI values ranging from 229.7 to 605.4), mainly due to the content of Cd in the sludge samples. Further studies about the fate and transport of Cd and other toxic metals in the sludges are highly recommended to better understand their risk to the surrounding environment, such as groundwater and agricultural soil.
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Affiliation(s)
- Nguyen Van Thinh
- Department of Environmental Changes, Faculty of Social and Cultural Studies, Kyushu University, Fukuoka, 819-0395, Japan.
- Consulting Center of Technological Sciences for Natural Resources and Environment, Vietnam National University of Agriculture, Hanoi, Vietnam.
| | - Nguyen Thuy Chung
- School of Environmental Science and Technology, Hanoi University of Science and Technology, Hanoi, Vietnam.
| | - Ly Thi Mai Luong
- Faculty of Environmental Sciences, VNU University of Science, Vietnam National University, Hanoi, Vietnam
| | - Pham Minh Chinh
- Faculty of Environmental Engineering, National University of Civil Engineering, Hanoi, Vietnam
| | - Phan Phuong Anh
- School of Environmental Science and Technology, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Nguyen The Huy
- School of Environmental Science and Technology, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Dang Thi Thuy
- School of Environmental Science and Technology, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Phong K Thai
- Queensland Alliance for Environmental Health Sciences, The University of Queensland, Woolloongabba, QLD, 4102, Australia
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Huang K, Zhang Y, Xu J, Guan M, Xia H. Feasibility of vermicomposting combined with room drying for enhancing the stabilization efficiency of dewatered sludge. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 143:116-124. [PMID: 35240447 DOI: 10.1016/j.wasman.2022.02.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 01/29/2022] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
Vermicomposting is characterized by transforming organic waste into nutrient-rich organic fertilizer through the action of different earthworms and microorganisms. Although vermicomposting can recycle the excess sludge in an eco-friendly manner, the longer stabilization period has limited its industrial application. The present study sought to investigate a novel operation process of vermicomposting combined with room drying (VD) to improve the stabilization efficiency of dewatered sludge. Subsequently, the performance and efficiency of vermicomposting without room drying, room dry without vermicomposting, and VD for sludge stabilization were compared simultaneously. In the VD process, the sludge water content reduced from 60.8% to 1.64%, showing the highest electrical conductivity and lowest organic matter content, making the humus substances abundant in the final product. Moreover, the vermicomposting achieved the highest ammonia and nitrate content in final product. Additionally, the bacterial and eukaryotic abundances in the VD product were significantly higher (P < 0.01, i.e., 15.6% and 180.7%) than the vermicomposting product. The specific bacterial genus of Glutamicibacter, Chitinibacter, and Acidobacteria was dominated in the VD product. The Partial least squares-Path modeling (PLS-PM) results revealed that the maturity degree in the VD product was significantly associated with microbial component, and the organic form was strongly driven by the change in the physicochemical properties, which was contradictory to vermicomposting model. The study suggests that the VD process could shorten the vermicomposting period by rapidly accelerating the physical, chemical, and biological stabilization of sludge.
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Affiliation(s)
- Kui Huang
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou 730070, China.
| | - Yingying Zhang
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Junjie Xu
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Mengxin Guan
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Hui Xia
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
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Mago M, Gupta R, Yadav A, Kumar Garg V. Sustainable treatment and nutrient recovery from leafy waste through vermicomposting. BIORESOURCE TECHNOLOGY 2022; 347:126390. [PMID: 34822988 DOI: 10.1016/j.biortech.2021.126390] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/14/2021] [Accepted: 11/16/2021] [Indexed: 06/13/2023]
Abstract
The present investigation was carried out to evaluate the vermicomposting potential of two cruciferous vegetables' residual biomasses under laboratory conditions. Cabbage and cauliflower residual biomasses were spiked with 60% cow dung and vermicomposted for 90 days. The results showed a decrease in pH (5.3-9.8%), Total Organic Carbon (36.7-42.8%); increase in Electrical Conductivity (33-99.4%) and ash content (144.7-187.8%) after vermicomposting. Significant reduction in C:N ratio (49.5-76.4%) and C:P ratio (62.8-66.04%), increase in Total Kjeldahl Nitrogen (49.3-85.3%), Total Available Phosphorus (68.2-98.1%), Total Potassium (91.8-120.3%) were observed. FT-IR spectra of the vermicomposts had lesser band heights and peak intensities than raw materials. This evidenced decomposition of organic compounds and vermicompost stability. Germination Index values was calculated to determine the phytotoxicity level. Earthworms' growth and prolificacy was evaluated in terms of biomass gain, cocoons production and worm growth rate. Finally, it was inferred that cruciferous vegetables' biomass can be used for vermicomposting. The cauliflower residual biomass has shown better decomposition efficiency than cabbage residual biomass.
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Affiliation(s)
- Monika Mago
- J.C. Bose University of Science and Technology, YMCA, Faridabad 121006, India
| | - Renuka Gupta
- J.C. Bose University of Science and Technology, YMCA, Faridabad 121006, India
| | - Anoop Yadav
- Central University of Haryana, Mahendergarh, India
| | - Vinod Kumar Garg
- Department of Environmental Science and Technology, Central University of Punjab, Bathinda, India
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21
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Badhwar VK, Singh C. Vermicomposting of textile mill sludge employing Eisenia fetida: Role of cow dung and tea waste amendments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:19823-19834. [PMID: 34727306 DOI: 10.1007/s11356-021-17185-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
Vermicomposting of textile mill sludge (TMS) with cow dung (CD) and tea waste (TW) as amendments was done in seven different combinations using Eisenia fetida for 90 days. Results revealed that pH decreased from 7.68-8.63 to 7.09-7.59. TOC content and C/N ratio reductions were in range of 15.71-20.08% and 39.33-50.05%, respectively (P < 0.05). The macronutrients in the form of TN, TP, and TK increased 0.38-0.64, 1.07-2.27, and 0.56-1.98 times respectively after end of bioconversion process (P < 0.05), among increases in ash content and EC. The biomass and cocoon production of E. fetida increased significantly (P < 0.05), while high mortality rate of earthworms was observed in treatments containing 50% or more TMS content. The bacterial population beneficial for degradation of organic matter increased significantly over initial substrates (0th day) (P < 0.05). Increased humification index in end-product indicated better maturity of vermicompost as observed in treatments containing higher proportions of amendments. The addition of amendments favored earthworm activity which significantly decreased the heavy metal concentration (Fe, Cu, Pb, Zn) in the end-product. The study concluded that sustainable utilization of TMS could be achieved for cleaner and enriched vermicompost production by addition of amendments CD and TW in proportions of 50% and above.
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Affiliation(s)
- Vinay Kumar Badhwar
- M.Tech Environmental Science & Engineering, Guru Nanak Dev Engineering College, Ludhiana, 141006, India.
| | - Charanjit Singh
- M.Tech Environmental Science & Engineering, Guru Nanak Dev Engineering College, Ludhiana, 141006, India
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22
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Monteiro NBR, Moita Neto JM, da Silva EA. Life cycle management in bakeries: a proposed roadmap towards sustainability. THE INTERNATIONAL JOURNAL OF LIFE CYCLE ASSESSMENT 2021; 27:82-97. [PMID: 34866807 PMCID: PMC8626753 DOI: 10.1007/s11367-021-02008-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Abstract
PURPOSE Some commercial/industrial sectors have increased their interest in sustainability, in some cases changing their business focus, from a profit-centered approach to a more balanced view, including environmental and social factors. It means that the interest in sustainability is increasing. Life cycle management (LCM) is a methodology/concept that can contribute to this paradigm shift. In this research, the potential application of LCM in the bakery segment was investigated, considering the entire value chain related to the sector (inputs, packaging, suppliers, customers, waste management). METHODS Bakeries were visited, in Teresina, Piauí, Brazil, to learn about the products, services, production processes, and the socio-environmental and economic sustainability practices, aiming at identifying bottlenecks and to propose alternatives based on LCM. Besides the field approach, the study was structured based on the literature that brings the concepts and potentialities of applying LCM in various economic/industrial sectors. The PDCA cycle and the SWOT Matrix were also used to assist the implementation of LCM. A roadmap was proposed aiming at the LCM implementation in bakeries. RESULTS The results show that although the sector has some environmentally sustainable practices (waste separation, energy savings, reuse of products, inputs purchased locally), the primary intention is to reduce costs and not to mitigate environmental impacts. Regarding social responsibility, they donate bread to institutions. This is an important attitude, but not the only one for fulfilling the social role within the value chain. They do not consider suppliers that show concern for the environment (certified companies), and both marketing and product labels do not evoke these issues too. CONCLUSIONS AND RECOMMENDATIONS Thus, there is the possibility of implementing LCM in bakeries if there is a concern with sustainable production and consumption. A roadmap for implementing LCM in bakeries was proposed including some steps: mapping the life cycle of products/processes/services associated with the sector; analyzing factors that can influence the actions towards sustainability; disseminating life cycle information to the entire value chain; efficient waste management, including the partnership with recycling companies; and treatment of the collected data and improvement proposal, using management tools such as the PDCA Cycle, the SWOT Matrix, and Environmental, Social and Governance (ESG) aiming at the search for environmental and economic sustainability and social fair alternatives. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s11367-021-02008-7.
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Affiliation(s)
- Nathalie Barbosa Reis Monteiro
- Centro de Ciências Sociais e Aplicadas, Universidade Presbiteriana Mackenzie, Rua da Consolação, São Paulo, SP 01302907 Brazil
| | - José Machado Moita Neto
- Doutorado em Desenvolvimento e Meio Ambiente, Universidade Federal do Piauí, Avenida Universitária, Teresina, PI 64049550 Brazil
| | - Elaine Aparecida da Silva
- Centro de Tecnologia, Departamento de Recursos Hídricos, Geotecnia e Saneamento Ambiental, Doutorado em Desenvolvimento e Meio Ambiente, Universidade Federal do Piauí, Avenida Universitária, Teresina, PI 64049550 Brazil
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Niedzialkoski RK, Marostica R, Damaceno FM, Costa LADM, Costa MSSDM. Combination of biological processes for agro-industrial poultry waste management: Effects on vermicomposting and anaerobic digestion. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 297:113127. [PMID: 34346400 DOI: 10.1016/j.jenvman.2021.113127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 06/07/2021] [Accepted: 06/18/2021] [Indexed: 06/13/2023]
Abstract
This study evaluated the combination of bioprocesses to increase the utilization of agro-industrial poultry wastes. Composting piles were submitted to hydration and fraction separation (FS) and then, the solid fraction was vermicomposted and the liquid fraction was anaerobically digested. Composting followed by hydration and FS prior to vermicomposting enhanced earthworm adaptation and survival by reducing salt levels (50%), total organic carbon, and total nitrogen which may be limiting to vermicomposting at high concentrations. These strategies providing the production of up to 300 new cocoons and 360 young earthworms more than the control treatment. In addition to providing a favorable environment for earthworm growth, the combination of bioprocesses resulted in a high-quality organic fertilizer free of phytotoxic compounds and with phytostimulant properties (germination index higher than 100%). Energy recovery was greater in the treatment without the precomposting step (T0) (461.8 L CH4 kg-1. Volatile Solidsadded). The results show that combining the bioprocesses is a sustainable alternative for managing poultry wastes not only in terms of the recycling of nutrients but also by providing a clean source of energy.
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Affiliation(s)
- Rosana Krauss Niedzialkoski
- Research Group on Water Resources and Environmental Sanitation, Western Paraná State University, Agricultural Engineering Graduate Program, Rua Universitária, 2069, Jardim Universitário, 85.819-110, Cascavel, Parana, Brazil
| | - Ritieli Marostica
- Research Group on Water Resources and Environmental Sanitation, Western Paraná State University, Agricultural Engineering Graduate Program, Rua Universitária, 2069, Jardim Universitário, 85.819-110, Cascavel, Parana, Brazil
| | - Felippe Martins Damaceno
- Research Group on Water Resources and Environmental Sanitation, Western Paraná State University, Agricultural Engineering Graduate Program, Rua Universitária, 2069, Jardim Universitário, 85.819-110, Cascavel, Parana, Brazil
| | - Luiz Antonio de Mendonça Costa
- Research Group on Water Resources and Environmental Sanitation, Western Paraná State University, Agricultural Engineering Graduate Program, Rua Universitária, 2069, Jardim Universitário, 85.819-110, Cascavel, Parana, Brazil
| | - Monica Sarolli Silva de Mendonça Costa
- Research Group on Water Resources and Environmental Sanitation, Western Paraná State University, Agricultural Engineering Graduate Program, Rua Universitária, 2069, Jardim Universitário, 85.819-110, Cascavel, Parana, Brazil.
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24
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Hui X, Kui H. Effects of TiO 2 and ZnO nanoparticles on vermicomposting of dewatered sludge: studies based on the humification and microbial profiles of vermicompost. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:38718-38729. [PMID: 33742383 DOI: 10.1007/s11356-021-13226-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 02/25/2021] [Indexed: 06/12/2023]
Abstract
Nanoparticles (NPs) are prevalent in dewatered sludge, and their presence increases the environmental risks associated with the subsequent sludge treatment process. However, until now, their potential effects on sludge vermicomposting have not been clarified. This study investigated the effects of NPs on sludge humification and microbial profiles during vermicomposting by comparing fresh dewatered sludge substrates with substrates mixed with 0 mg/kg NPs (control), 100 mg/kg TiO2, 500 mg/kg TiO2, 100 mg/kg ZnO, and 500 mg/kg ZnO. The results showed that addition of TiO2 and ZnO NPs to sludge did not significantly affect the growth rate of earthworms and the superoxide dismutase activity in their guts during vermicomposting. Moreover, higher concentrations of the selected NPs promoted the humification index of sludge by 20.7-49.6%, through the formation of polysaccharides, aromatic substances, and organic acids in final vermicomposts. Compared with the control without NP addition, bacterial community diversity was enhanced in treatments with TiO2 and ZnO NPs, and dominant genera differed according to the type and concentration of NPs. This study suggests that the presence of TiO2 and ZnO NP residuals modify the microbial community of sludge, thus promoting sludge humification during vermicomposting.
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Affiliation(s)
- Xia Hui
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Huang Kui
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China.
- Key laboratory of Yellow River Water Environment in Gansu Province, Lanzhou, 730070, China.
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25
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Qin J, Fu X, Chen X, Cui G. Changes in physicochemical properties and microfauna community during vermicomposting of municipal sludge under different moisture conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:31539-31548. [PMID: 33608779 DOI: 10.1007/s11356-021-12846-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 02/03/2021] [Indexed: 06/12/2023]
Abstract
The present study aimed to explore the effect of a range of moisture content levels, including 65%, 72%, and 78%, on physicochemical properties and microfauna communities during vermicomposting of municipal sludge. As a result, death of perishable microfauna together with the degradation of organic matter was the dominant response in all groups in the early period of vermicomposting, while the effects of moisture content levels on various physiochemical parameters did not appear until the mid-later period. After the treatment with 78% moisture content, the content of mineral nitrogen was 1.186 g/kg in the sludge, with a 9.36 × 103 ind./g of microfauna quantity and 663.01 g of earthworm biomass. The values of these three measurements in 78% group were significantly higher than other two groups (p < 0.05), indicating that the effects of 78% moisture content were more pronounced for promoting nitrogen mineralization as well as microfauna and earthworms growth during vermicomposting. Specifically, testate amoebae were strongly associated with nitrification process, while nematodes were related to ammonification and phosphorus mineralization, of which testate amoebae had great potential of being bioindicators during vermicomposting of municipal sludge.
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Affiliation(s)
- Jie Qin
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
- College of Chemistry Biology and Environment, Yuxi Normal University, Yuxi, 653100, China
| | - Xiaoyong Fu
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China.
| | - Xuemin Chen
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Guangyu Cui
- State Key Laboratory of Pollution Control and Source Reuse, Tongji University, Shanghai, 200092, China
- River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
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26
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Devi C, Khwairakpam M. Management of invasive weed Parthenium hysterophorus through vermicomposting using a polyculture of Eisenia fetida and Eudrilus eugeniae. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:29710-29719. [PMID: 33569687 DOI: 10.1007/s11356-021-12720-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 01/26/2021] [Indexed: 06/12/2023]
Abstract
Parthenium hysterophorus is considered one of the most noxious terrestrial weeds which needs to be efficiently managed to sustain the environment and vermicomposting are a promising eco-friendly management technique. In the current study, vermicomposting of P. hysterophorus was carried out using a polyculture of two epigeic earthworm species, i.e., Eisenia fetida and Eudrilus eugeniae employed in five different vermireactors referred as Rp1, Rp2, Rp3, Rp4, and Rp5 with five mixing ratios 3:7, 4:6, 5:5, 6:4, and 7:3 respectively of P. hysterophorus to cow dung as a blending material. The nutrients in the final vermicompost were determined by analyzing different physico-chemical parameters and the efficiency evaluated by the growth rate of earthworms. After vermicomposting, TKN, TP, and K contents increased with the highest percentage change of 74.74%, 91%, and 47.2% respectively, compared to initial values. Reduction in C/N ratio was observed in all the vermireactors with the lowest C/N ratio of 9.76. EC increased for all the vermireactors during the process and reached in the range of 3.7-3.85 ds/m at the end of the process. The highest percentage gain in biomass of earthworms was 46.25% in Rp2. Vermicomposting of P. hysterophorus is possible for the management of this invasive weed through polyculture of the earthworms E. fetida and E. eugeniae to obtain a value-added organic fertilizer, i.e., vermicompost by a sustainable process.
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Affiliation(s)
- Chaichi Devi
- Department of Civil Engineering, National Institute of Technology Meghalaya, Shillong, Meghalaya, 793003, India.
| | - Meena Khwairakpam
- Centre for Rural Technology, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
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27
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Liu T, Awasthi SK, Qin S, Liu H, Awasthi MK, Zhou Y, Jiao M, Pandey A, Varjani S, Zhang Z. Conversion food waste and sawdust into compost employing black soldier fly larvae (diptera: Stratiomyidae) under the optimized condition. CHEMOSPHERE 2021; 272:129931. [PMID: 33601204 DOI: 10.1016/j.chemosphere.2021.129931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/21/2021] [Accepted: 02/06/2021] [Indexed: 06/12/2023]
Abstract
The increasing number of food waste (FW) had led to an urgent methods to recycle, black soldier fly larvae (BSFL) was a potential quick waste manager. To assess the impact of BSFL on conversion FW and sawdust into compost via the parameters of maturity, nutrient transformation and volatile fatty acids (VFAs). Meanwhile, the artificial of FW contained noodles, cabbages, rice and pork. FW and sawdust were employed by BSFL (6.5:0.5:1.2 ratio on fresh weight basis) as T1 and without BSFL called control (T2), while moisture content for FW and sawdust was 86.57% and 5.98%. Results illustrated that BSFL declined the composting time and only 9 d. Compared with initial mixture materials, T1 decreased organic matter, total kjeldahl nitrogen and VFAs from 97.41 to 85.96%, 23.01 to 17.77 g kg-1 and 3.25 to 1.69 g kg-1, respectively. However, T1 increased the total phosphorous and total potassium in 3.8 folds and 5 folds. The value of pH and EC reached at 4.27 and 1100 μS cm-1, and the germination index attained to 70.69%. In addition, redundancy analysis was used to analysis the correlation between factors under composting employed with different additive ratio of BSFL. Therefore, BSFL played a vital role in FW and sawdust recycling, especially reduced composting time and made the final separation of larvae and substrate easily, saving labor costs.
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Affiliation(s)
- Tao Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China
| | - Sanjeev Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China
| | - Shiyi Qin
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China
| | - Huimin Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China.
| | - Yuwen Zhou
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China
| | - Minna Jiao
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China
| | - Ashok Pandey
- Centre for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research, Lucknow, 226 001, India
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar, 382010, Gujarat, India
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China.
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28
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Li W, Li J, Ahmad Bhat S, Wei Y, Deng Z, Li F. Elimination of antibiotic resistance genes from excess activated sludge added for effective treatment of fruit and vegetable waste in a novel vermireactor. BIORESOURCE TECHNOLOGY 2021; 325:124695. [PMID: 33465648 DOI: 10.1016/j.biortech.2021.124695] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/04/2021] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
Elimination of antibiotic resistance genes (ARGs) from excess activated sludge (EAS) mixed for effective treatment of different fruit and vegetable waste (FVW) by using a novel vermireactor consisted of substrate and bed compartments was investigated. ARGs (tet G, tet M and sul 1) and mobile genetic element gene (intl 1) were targeted and, through quantitative analysis of their abundances in both the compartments and the fresh cast of earthworms, significant reductions in substrate compartments were confirmed for the treatments for FVW added with EAS and EAS alone even if the reduction extents differed among the types of FVW. Apparent reductions were not found in the bed compartment where the final products accumulated. For the fresh cast, the relative abundances of ARGs and intl 1 against to the total bacterial 16S rDNA decreased markedly. The present study provided an insight for proper controlling of ARGs during vermicomposting of FVW and EAS.
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Affiliation(s)
- Wenjiao Li
- Graduate School of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Jiefeng Li
- Department of Architecture, Lu Liang University, Lishi, Shanxi 033000, China
| | - Sartaj Ahmad Bhat
- River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yongfen Wei
- River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Zhiyi Deng
- College of Environment and Resources, Xiangtan University, Xiangtan 411105, China
| | - Fusheng Li
- Graduate School of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan; River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan; College of Environment and Resources, Xiangtan University, Xiangtan 411105, China.
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29
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Mago M, Yadav A, Gupta R, Garg VK. Management of banana crop waste biomass using vermicomposting technology. BIORESOURCE TECHNOLOGY 2021; 326:124742. [PMID: 33508640 DOI: 10.1016/j.biortech.2021.124742] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 01/13/2021] [Accepted: 01/15/2021] [Indexed: 06/12/2023]
Abstract
This study reports the vermicomposting of banana crop waste biomass by Eisenia fetida. Cow dung has been used as bulking agent in this study. The experiment was conducted in six vermireactors containing different ratios of banana leaf waste biomass (BL) and cow dung (CD) for 105 days. Earthworm activity significantly reduced pH, TOC, C:N and C:P ratio of the wastes. Whereas macronutrients and micronutrients content increased after vermicomposting. TOC content of wastes reduced by 40-64% and C:N ratio of the vermicomposts was in the range of 8.9-24.3. The benefit ratio for heavy metals (Cu, Fe, Zn, Cd, Pb, Mn and Cr) was in the range of 0.23-3.44. The results indicated that the growth and fecundity of the earthworms was best in the vermireactors having 20-40% BL. Finally, it was concluded that vermicomposting can be included in the overall scheme of banana crop waste management.
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Affiliation(s)
- Monika Mago
- J. C. Bose University of Science and Technology, YMCA, Faridabad, India
| | - Anoop Yadav
- Central University of Haryana, Mahendergarh, India
| | - Renuka Gupta
- J. C. Bose University of Science and Technology, YMCA, Faridabad, India
| | - V K Garg
- Central University of Punjab, Bathinda, India.
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Sharma D, Pandey AK, Yadav KD, Kumar S. Response surface methodology and artificial neural network modelling for enhancing maturity parameters during vermicomposting of floral waste. BIORESOURCE TECHNOLOGY 2021; 324:124672. [PMID: 33445008 DOI: 10.1016/j.biortech.2021.124672] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/01/2021] [Accepted: 01/02/2021] [Indexed: 06/12/2023]
Abstract
In this study, the mixture of floral waste and cattle dung in different proportions was utilised to convert into vermicompost using earthworm Eisenia fetida. In the design of the experiment, the optimum amount of floral waste (1325 g) and cattle dung (500 g) was obtained for vermicompost using central composite design (CCD) and compared with the output of artificial neural network (ANN). The optimum proportions of vermicompost showed pH of 7.10, electrical conductivity of 3.39 mS/cm, total organic carbon of 34.01%, C: N ratio of 13, phosphorous of 5.31 g/kg and potassium of 14.45 g/kg. This vermicompost was enriched with sufficient concentration of nutrients like potassium, sodium, phosphorous, and calcium, which are beneficial for the growth of the plants. The current study was based on comparing response surface methodology (RSM) and ANN for maturity parameters and the value of R2 in both the cases was near 1.
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Affiliation(s)
- Dayanand Sharma
- Civil Engineering Department, National Institute of Technology Patna, Ashok Rajpath, Mahendru, Patna, Bihar 800005, India
| | - Ashutosh Kumar Pandey
- CSIR-National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur 440 020, India
| | - Kunwar Durg Yadav
- Civil Engineering Department, S. V. National Institute of Technology, Surat, Gujarat 395 007, India
| | - Sunil Kumar
- CSIR-National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur 440 020, India.
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Zziwa A, Jjagwe J, Kizito S, Kabenge I, Komakech AJ, Kayondo H. Nutrient recovery from pineapple waste through controlled batch and continuous vermicomposting systems. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 279:111784. [PMID: 33310239 DOI: 10.1016/j.jenvman.2020.111784] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 11/12/2020] [Accepted: 12/01/2020] [Indexed: 06/12/2023]
Abstract
The largest portion of pineapple peels and pulp generated from production points is disposed of haphazardly contributing to a number of environmental and health challenges. However, these wastes contain valuable plant nutrients that could be recovered to boost soil fertility, and increase agricultural production. This study evaluated the variation in physico-chemical parameters in batch and continuous vermicomposting systems as potential pathways for nutrient recovery from pineapple waste. The study compared the efficiency of waste reduction and nutrient recovery for batch (B), and continuous (C) vermicomposting systems during a 60-day period. The substrates were pineapple peels (PW), and cattle manure (CM) fed in a ratio of 4:1 (w/w). Control reactors were fed with 100% CM in both the feeding modes. Results indicated that waste degradation was 60%, and 54% while earthworm biomass increased by 57% and 129% for BPW, and CPW, respectively. pH significantly decreased with time in both systems. Total phosphorous increased with vermicomposting time with that of B being significantly higher than C systems. Nitrogen, potassium, and sodium significantly increased in the control experiments while the three elements significantly reduced for BPW, and CPW owing to high leachate production in the latter. The N, P, K, and C retention in vermicompost was 24.2%, 90.4%, 67.5%, 41.1%, and 32.6%, 91.2%, 79.3%, 46.1%, for BPW and CPW, respectively. Continuous systems produced higher earthworm biomass and retained more nutrients in vermicompost than batch systems, and can therefore, be recommended as better systems for pineapple waste vermicomposting.
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Affiliation(s)
- Ahamada Zziwa
- Department of Agricultural and Biosystems Engineering, College of Agricultural and Environmental Sciences, Makerere University, P.O. BOX, 7062, Kampala, Uganda.
| | - Joseph Jjagwe
- Department of Agricultural and Biosystems Engineering, College of Agricultural and Environmental Sciences, Makerere University, P.O. BOX, 7062, Kampala, Uganda
| | - Simon Kizito
- Department of Forestry, Biodiversity and Tourism, P.O.BOX, 7062, Makerere University, Kampala, Uganda
| | - Isa Kabenge
- Department of Agricultural and Biosystems Engineering, College of Agricultural and Environmental Sciences, Makerere University, P.O. BOX, 7062, Kampala, Uganda
| | - Allan John Komakech
- Department of Agricultural and Biosystems Engineering, College of Agricultural and Environmental Sciences, Makerere University, P.O. BOX, 7062, Kampala, Uganda
| | - Henry Kayondo
- Department of Agricultural and Biosystems Engineering, College of Agricultural and Environmental Sciences, Makerere University, P.O. BOX, 7062, Kampala, Uganda
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Deepthi MP, Kathireswari P, Rini J, Saminathan K, Karmegam N. Vermitransformation of monogastric Elephas maximus and ruminant Bos taurus excrements into vermicompost using Eudrilus eugeniae. BIORESOURCE TECHNOLOGY 2021; 320:124302. [PMID: 33129096 DOI: 10.1016/j.biortech.2020.124302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/14/2020] [Accepted: 10/17/2020] [Indexed: 06/11/2023]
Abstract
Biotransformation of monogastric (Elephas maximus) and ruminant (Bos taurus) excrements with Eudrilus eugeniae was assessed by establishing five different treatments in triplicate: 100% elephant dung (T1), 50% elephant dung + 50% garden soil (T2), 50% elephant dung + 50% cow dung (T3), 100% cow dung (T4) and 50% cow dung + 50% garden soil (T5) and maintained for 90 days under experimental conditions. An increment of macronutrients and reduction of C/N ratio (<20) in the vermicomposts was recorded, where T3 presented higher NPK contents with the relative nutrient recovery efficiency of 1.65, 2.94 and 1.76, respectively. Cycle I (45 days) endorsed cocoons and juveniles, while Cycle II (90 days) supported sub-adults and adults. Seed germination and 28 days growth studies with Vigna unguiculata signified that the vermicomposts were phytotoxicity-free. The binary ratio in T3 (1:1) is suitable for the biotransformation of elephant dung into advantageous vermicompost with Eudrilus eugeniae.
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Affiliation(s)
- Madathil Peedika Deepthi
- Department of Zoology, Kongunadu Arts and Science College (Autonomous), Coimbatore 641 029, Tamil Nadu, India
| | - Palanisamy Kathireswari
- Department of Zoology, Kongunadu Arts and Science College (Autonomous), Coimbatore 641 029, Tamil Nadu, India.
| | - Joseph Rini
- Department of Zoology, Kongunadu Arts and Science College (Autonomous), Coimbatore 641 029, Tamil Nadu, India
| | - Kulandaivel Saminathan
- Department of Chemistry, Kongunadu Arts and Science College (Autonomous), Coimbatore 641 029, Tamil Nadu, India
| | - Natchimuthu Karmegam
- Department of Botany, Government Arts College (Autonomous), Salem 636 007, Tamil Nadu, India
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Yuvaraj A, Thangaraj R, Ravindran B, Chang SW, Karmegam N. Centrality of cattle solid wastes in vermicomposting technology - A cleaner resource recovery and biowaste recycling option for agricultural and environmental sustainability. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115688. [PMID: 33039975 DOI: 10.1016/j.envpol.2020.115688] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 09/12/2020] [Accepted: 09/16/2020] [Indexed: 05/09/2023]
Abstract
The current review reports the importance and significance of cattle solid waste in vermicomposting technology concerning biowaste pollution in the environment. Needy increasing population evokes livestock production resulting in the massive generation of livestock wastes, especially cattle dung. Improper disposal and handling of biowastes originating from agriculture, industries, forests, rural and urban areas lead to nutrient loss, environmental pollution and health risks. Among the organic waste disposal methods available, vermicomposting is regarded as an environmentally friendly technology for bioconversion of agricultural, industrial, rural and urban generated organic solid wastes which are serving as reservoirs of environmental pollution. In vermicomposting of organic wastes, cattle dung plays a central role in mineralization, nutrient recovery, earthworm and microbial activity leading to vermifertilizer production. Even though the vermicomposting studies use cattle dung invariably as an amendment material, its importance has not been reviewed to highlight its central role. Hence, the present review mainly emphasizes the key role played by cattle dung in vermicomposting. Vermiconversion of cattle dung alone and in combination with other biowaste materials of environmental concern, mechanisms involved and benefits of vermicompost in sustainable agriculture are the major objectives addressed in the present review. The analysis reveals that cattle dung is indispensable amendment material for vermicomposting technology to ensure agricultural and environmental sustainability by reducing pollution risks associated with biowastes on one hand, and nutrient-rich benign vermifertilizer production on the other hand.
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Affiliation(s)
- Ananthanarayanan Yuvaraj
- Vermitechnology and Ecotoxicology Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Ramasundaram Thangaraj
- Vermitechnology and Ecotoxicology Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Balasubramani Ravindran
- Department of Environmental Energy and Engineering, Kyonggi University, Youngtong - Gu, Gyeonggi - Do, 16227, South Korea
| | - Soon Woong Chang
- Department of Environmental Energy and Engineering, Kyonggi University, Youngtong - Gu, Gyeonggi - Do, 16227, South Korea
| | - Natchimuthu Karmegam
- Department of Botany, Government Arts College (Autonomous), Salem, 636 007, Tamil Nadu, India.
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Cao Y, Tian Y, Wu Q, Li J, Zhu H. Vermicomposting of livestock manure as affected by carbon-rich additives (straw, biochar and nanocarbon): A comprehensive evaluation of earthworm performance, microbial activities, metabolic functions and vermicompost quality. BIORESOURCE TECHNOLOGY 2021; 320:124404. [PMID: 33212386 DOI: 10.1016/j.biortech.2020.124404] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 11/04/2020] [Accepted: 11/07/2020] [Indexed: 06/11/2023]
Abstract
Vermicomposting is an eco-friendly method for treating organic wastes. This study investigated the effects of the addition of straw (S), biochar (B), nanocarbon (N), S + B and S + N to cow dung (CD) on earthworm (Eisenia fetida) performance, microbial properties and vermicompost quality. In general, the earthworm growth rate and cocoon production were enhanced by straw addition, but were inhibited by biochar or nanocarbon addition. However, biochar and nanocarbon increased microbial communities associated with organic matter decomposition, and improved metabolic functions, enzyme activities and vermicompost properties. Moreover, addition of straw in combination with nanocarbon resulted in the highest vermicompost quality index (VQI), and significantly increased the biomass of three different test crops (radish, lettuce and pakchoi). These results indicated that biochar and nanocarbon mainly improved microbial activities, while straw primarily enhanced earthworm performance during vermicomposting. In addition, straw combined with nanocarbon can be used to enhance the agronomic performance of vermicompost.
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Affiliation(s)
- Yune Cao
- College of Agriculture, Ningxia University, Helanshan Xilu No. 489, Yinchuan 750021, China
| | - Yongqiang Tian
- College of Agriculture, Ningxia University, Helanshan Xilu No. 489, Yinchuan 750021, China; College of Horticulture, China Agricultural University, Yuanmingyuan West Road No. 2, Haidian District, Beijing 100193, China.
| | - Qing Wu
- College of Agriculture, Ningxia University, Helanshan Xilu No. 489, Yinchuan 750021, China
| | - Jianshe Li
- College of Agriculture, Ningxia University, Helanshan Xilu No. 489, Yinchuan 750021, China
| | - Hongyan Zhu
- College of Agriculture, Ningxia University, Helanshan Xilu No. 489, Yinchuan 750021, China
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Balachandar R, Biruntha M, Yuvaraj A, Thangaraj R, Subbaiya R, Govarthanan M, Kumar P, Karmegam N. Earthworm intervened nutrient recovery and greener production of vermicompost from Ipomoea staphylina - An invasive weed with emerging environmental challenges. CHEMOSPHERE 2021; 263:128080. [PMID: 33297079 DOI: 10.1016/j.chemosphere.2020.128080] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/15/2020] [Accepted: 08/20/2020] [Indexed: 06/12/2023]
Abstract
The invasive weed, Ipomoea staphylina (IS) with cow dung (CD) and mushroom spent straw (MS) in four different combinations (IS:CD:MS), V1 (1:1:0), V2 (2:1:1), V3 (1:0:1) and V4 (1:1:1) were pre-decomposed for 21 days followed by 50 days vermicomposting using Eudrilus eugeniae in triplicates in order to alleviate and to utilize the weed biomass in an environment-friendly manner. The contents of organic matter, organic carbon, cellulose, lignin, C/N and C/P ratios showed a decrease, while electrical conductivity, total NPK, calcium, sodium, and nitrate-nitrogen showed a significant increase in vermicompost over control. Water-soluble organic carbon to organic nitrogen ratio and C/N ratio in V1 (0.52 and 17.55) and V4 (0.43 and 16.56), respectively, were in conformity with the maturity of vermicomposts. Scanning electron micrographs of the end products clearly showed more fragmented, fine, and porous particles in vermicompost. Copper, chromium, cadmium, lead, and zinc in vermicomposts were below the permissible limits. Dehydrogenase, acid phosphatase, alkaline phosphatase, cellulase, and protease activities were significantly higher in V4 than other treatments, implying the role of MS and CD addition during vermicomposting. Though V3 combination supported worm biomass, V4 combination was found to favor the fecundity of Eudrilus eugeniae. Results reveal that 1:1:1 combination of SI + CD + MS (V4) is suitable for utilizing the weed biomass for vermicompost production and nutrient recovery. From the biomass of environmentally problematic weed, Ipomoea staphylina, nutrient-rich vermicompost can be produced through vermitechnology for sustainable environmental management and agriculture.
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Affiliation(s)
- Ramalingam Balachandar
- Department of Biotechnology, Aarupadai Veedu Institute of Technology, Vinayaka Missions University (Deemed to Be University), Paiyanoor, Chennai, 603 104, Tamil Nadu, India
| | - Muniyandi Biruntha
- Vermitechnology Laboratory, Department of Animal Health and Management, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India
| | - Ananthanarayanan Yuvaraj
- Vermitechnology and Ecotoxicology Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Ramasundaram Thangaraj
- Vermitechnology and Ecotoxicology Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Ramasamy Subbaiya
- Department of Biological Sciences, School of Mathematics and Natural Sciences, Copperbelt University, Riverside, Jambo Drive, P O Box: 21692, Kitwe, Zambia
| | - Muthusamy Govarthanan
- Department of Environmental Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Ponnuchamy Kumar
- Department of Animal Health and Management, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India
| | - Natchimuthu Karmegam
- Department of Botany, Government Arts College (Autonomous), Salem, 636 007, Tamil Nadu, India.
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Lv B, Cui Y, Wei H, Chen Q, Zhang D. Elucidating the role of earthworms in N 2O emission and production pathway during vermicomposting of sewage sludge and rice straw. JOURNAL OF HAZARDOUS MATERIALS 2020; 400:123215. [PMID: 32593023 DOI: 10.1016/j.jhazmat.2020.123215] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/14/2020] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
Vermicomposting is a sustainable option for the recycling of biodegradable organic waste. However, it also produces nitrous oxide (N2O), which is a highly potent greenhouse gas. In this study, the N2O stable isotope and functional genes for nitrogen cycling were determined to investigate the sources of N2O during vermicomposting. The results showed that vermicomposting promoted the organic degradation and nitrogen nitrification, and the presence of earthworms increased the emission of N2O during vermicomposting compared to that during the control treatment with no earthworms. The site preference analysis of N2O stable isotope showed that both nitrification and denitrification were present during the early stages of vermicomposting, while nitrification was the dominant contributor to N2O production in the later stages. Moreover, earthworms increased the gene copies of amoA, and stimulated the nitrifying bacteria, and hence, increased the N2O emission via nitrification. In addition, the activity of earthworms reduced the gene number of nosZ during vermicomposting, while the denitrification was the main source of N2O in the earthworm gut, as the conditions inside the gut inhibited nosZ. Overall, nitrification was the major pathway (55.8-88.7 %) for N2O production, which was promoted by the introduction of earthworms through nitrification.
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Affiliation(s)
- Baoyi Lv
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China; Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, East China Normal University, Shanghai 200241, China.
| | - Yuxue Cui
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, East China Normal University, Shanghai 200241, China
| | - Huawei Wei
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, East China Normal University, Shanghai 200241, China
| | - Qihao Chen
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Di Zhang
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China; International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), Shanghai Maritime University, Shanghai, 201306, China
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Kumar Badhwar V, Singh S, Singh B. Biotransformation of paper mill sludge and tea waste with cow dung using vermicomposting. BIORESOURCE TECHNOLOGY 2020; 318:124097. [PMID: 32949952 DOI: 10.1016/j.biortech.2020.124097] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/28/2020] [Accepted: 09/02/2020] [Indexed: 06/11/2023]
Abstract
Vermicomposting of paper mill sludge (PMS) and tea waste (TW) using cow dung (CD) in five different combinations was carried out using Eisenia fetida. The aim of this study was to manage the waste disposal problem of PMS using the environment-friendly technology of vermiconversion. The changes in physico-chemical parameters were observed at 30-day intervals up to 90 days. The final pH was within 6.09-6.95 among all units. The TN, TP and TK contents increased 0.30-0.87, 0.53-3.23, 0.33-0.63 times, respectively in all mixtures after vermicomposting with increase in EC and ash Content. Maximum reduction in Total Organic Carbon (23.91%) was observed in treatment with highest PMS content, attributed to earthworm activity. Reduction in C: N ratio (38.63%-54.05%) was significantly observed in all the treatments. It was finally inferred that the paper mill sludge and tea waste in combination with cow dung can be successfully biotransformed into useful manure employing earthworms.
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Affiliation(s)
- Vinay Kumar Badhwar
- Department of Civil Engineering, Guru Nanak Dev Engineering College, Ludhiana 141006, India.
| | - Sukhwinderpal Singh
- Department of Civil Engineering, Guru Nanak Dev Engineering College, Ludhiana 141006, India
| | - Balihar Singh
- Department of Civil Engineering, Guru Nanak Dev Engineering College, Ludhiana 141006, India
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Kui H, Jingyang C, Mengxin G, Hui X, Li L. Effects of biochars on the fate of antibiotics and their resistance genes during vermicomposting of dewatered sludge. JOURNAL OF HAZARDOUS MATERIALS 2020; 397:122767. [PMID: 32388093 DOI: 10.1016/j.jhazmat.2020.122767] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 04/06/2020] [Accepted: 04/16/2020] [Indexed: 06/11/2023]
Abstract
It is currently still difficult to decrease the high contents of antibiotics and their corresponding antibiotic resistance genes (ARGs) in sludge vermicompost. To decrease the environmental risk of vermicompost as a bio-fertilizer, this study investigated the feasibility of biochar addition to decrease the levels of antibiotics and ARGs during vermicomposting of dewatered sludge. To achieve this, 1.25% and 5% of corncob and rice husk biochars, respectively, were added to sludge, which was then vermicomposted by Eisenia fetida for 60 days. The sludge blended with corncob biochar showed increased decomposition and humification of organic matter. Higher biochar concentration promoted both the number and diversity of bacteria, and differed dominant genera. The level of antibiotics significantly decreased as a result of biochar addition (P < 0.05), and tetracycline was completely removed. Relative to the control without addition of biochars, ermF and tetX genes significantly decreased with corncob biochar treatment (P < 0.05). Rice husk biochar (5%) could effectively decrease sul-1 and sul-2 genes in vermicompost (P < 0.05). However, the abundance of the intI-1 gene increased with biochar concentration. This study suggests that biochar addition can lessen the antibiotic and ARG pollution in sludge vermicompost, depending on the type and concentration of biochars.
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Affiliation(s)
- Huang Kui
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China.
| | - Chen Jingyang
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Guan Mengxin
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Xia Hui
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Lin Li
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
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Rini J, Deepthi MP, Saminathan K, Narendhirakannan RT, Karmegam N, Kathireswari P. Nutrient recovery and vermicompost production from livestock solid wastes with epigeic earthworms. BIORESOURCE TECHNOLOGY 2020; 313:123690. [PMID: 32585456 DOI: 10.1016/j.biortech.2020.123690] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/11/2020] [Accepted: 06/13/2020] [Indexed: 06/11/2023]
Abstract
The aim of this work was to study nutrient recovery and vermicompost production from livestock solid wastes of indigenous and exotic cow breeds with epigeic earthworms. Fourteen days pre-decomposed dung of Vechur native (CD1) and exotic Jersey (CD2) breeds were vermicomposted with Perionyx excavatus and Eudrilus eugeniae for 45 days (Cycle I) and 90 days (Cycle II) including respective controls without earthworms. Vermicomposts from CD1 and CD2 substrates during Cycle I and II showed increase in NPK, Ca and micro-nutrients (P < 0.05); whereas, pH, total organic carbon, C/N and C/P ratios disclosed decrease (P < 0.05) over initial levels for both the earthworms. E. eugeniae was found efficient in vermicomposting cattle solid wastes in 45 days and CD1 yielded nutrient rich vermicompost. The study concludes that Cycle I is suitable for nutrient recovery and vermicompost production, in addition to mass multiplication of earthworms in Cycle II.
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Affiliation(s)
- Joseph Rini
- Department of Zoology, Kongunadu Arts and Science College (Autonomous), Coimbatore 641 029, Tamil Nadu, India
| | - Madathil Peedika Deepthi
- Department of Zoology, Kongunadu Arts and Science College (Autonomous), Coimbatore 641 029, Tamil Nadu, India
| | - Kulandaivel Saminathan
- Department of Chemistry, Kongunadu Arts and Science College (Autonomous), Coimbatore 641 029, Tamil Nadu, India
| | | | - Natchimuthu Karmegam
- Department of Botany, Government Arts College (Autonomous), Salem 636 007, Tamil Nadu, India
| | - Palanisamy Kathireswari
- Department of Zoology, Kongunadu Arts and Science College (Autonomous), Coimbatore 641 029, Tamil Nadu, India.
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Singh A, Karmegam N, Singh GS, Bhadauria T, Chang SW, Awasthi MK, Sudhakar S, Arunachalam KD, Biruntha M, Ravindran B. Earthworms and vermicompost: an eco-friendly approach for repaying nature's debt. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2020; 42:1617-1642. [PMID: 31974693 DOI: 10.1007/s10653-019-00510-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 12/25/2019] [Indexed: 06/10/2023]
Abstract
The steady increase in the world's population has intensified the need for crop productivity, but the majority of the agricultural practices are associated with adverse effects on the environment. Such undesired environmental outcomes may be mitigated by utilizing biological agents as part of farming practice. The present review article summarizes the analyses of the current status of global agriculture and soil scenarios; a description of the role of earthworms and their products as better biofertilizer; and suggestions for the rejuvenation of such technology despite significant lapses and gaps in research and extension programs. By maintaining a close collaboration with farmers, we have recognized a shift in their attitude and renewed optimism toward nature-based green technology. Based on these relations, it is inferred that the application of earthworm-mediated vermitechnology increases sustainable development by strengthening the underlying economic, social and ecological framework.
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Affiliation(s)
- Archana Singh
- Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh, 221 011, India
| | - Natchimuthu Karmegam
- Department of Botany, Government Arts College (Autonomous), Salem, Tamil Nadu, 636 007, India
| | - Gopal Shankar Singh
- Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh, 221 011, India.
| | - Tunira Bhadauria
- Department of Zoology, Feroze Gandhi College, Raebareli, Uttar Pradesh, 229 001, India
| | - Soon Woong Chang
- Department of Evironmental Energy and Engineering, Kyonggi University, Youngtong Gu, Suwon, 16227, South Korea
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi Province, China
| | - Sivasubramaniam Sudhakar
- Department of Biotechnology, Manonmaniam Sundaranar University, Tirunelveli, Tamil Nadu, 627 012, India
| | - Kantha Deivi Arunachalam
- Center for Environmental Nuclear Research, Directorate of Research, SRM institute of science and technology, Kattankulathur, Chennai, Tamil Nadu, 603 203, India
| | - Muniyandi Biruntha
- Department of Animal Health and Management, Alagappa University, Karaikudi, Tamil Nadu, 630 003, India
| | - Balasubramani Ravindran
- Department of Evironmental Energy and Engineering, Kyonggi University, Youngtong Gu, Suwon, 16227, South Korea.
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam.
- Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam.
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Xu X, Yang Y, Wang G, Zhang S, Cheng Z, Li T, Yang Z, Xian J, Yang Y, Zhou W. Removal of heavy metals from industrial sludge with new plant-based washing agents. CHEMOSPHERE 2020; 246:125816. [PMID: 31918109 DOI: 10.1016/j.chemosphere.2020.125816] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 12/07/2019] [Accepted: 01/01/2020] [Indexed: 06/10/2023]
Abstract
Washing is one of the techniques for permanent removal of heavy metals from industrial sludge, for which washing agents are a key influence factor. However, high-efficiency, eco-friendly, and inexpensive agents are still lacking. In this study, the solutions derived from the three plant materials including Fatsia japonica, Hovenia acerba and Pterocarya stenoptera were employed to remove Cd, Cu, Pb, and Ni from industrial sludge. The effects of washing solution concentration, pH, washing time and temperature on metal removal were investigated. The metal removal efficiencies were found to increase with increasing solution concentrations or washing temperatures, decline with increasing pH, and presented various trends with increasing washing time. Among the three agents that derived from H. acerba showed relatively high removal for Cu (75.81%), Pb (63.42%), Ni (27.52%), and Cd (56.99%). After washing, environmental risks of residual metals were markedly diminished in sludge, attributable to decrease in their exchangeable forms. Furthermore, the applications of the plant washing agents increased sludge organic carbon, alkali-hydrolysable nitrogen, available phosphorus, and available potassium. Fourier transform infrared spectroscopy analysis suggested that the hydroxyl, carboxyl, ether, and amide may be the main functional groups in the three plant materials binding the heavy metals. Overall, the agent derived from H. acerba appears to be a feasible washing material for heavy metals removal from sludge.
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Affiliation(s)
- Xiaoxun Xu
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory of Soil Environment Protection of Sichuan Province, Chengdu, 611130, China
| | - Yan Yang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Guiyin Wang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory of Soil Environment Protection of Sichuan Province, Chengdu, 611130, China
| | - Shirong Zhang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory of Soil Environment Protection of Sichuan Province, Chengdu, 611130, China.
| | - Zhang Cheng
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ting Li
- College of Resources, Sichuan Agricultural University, Chengdu, 611130, China
| | - Zhanbiao Yang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Junren Xian
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yuanxiang Yang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wei Zhou
- College of Resources, Sichuan Agricultural University, Chengdu, 611130, China
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Quality of Vermicompost and Microbial Community Diversity Affected by the Contrasting Temperature during Vermicomposting of Dewatered Sludge. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17051748. [PMID: 32156070 PMCID: PMC7084763 DOI: 10.3390/ijerph17051748] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 02/21/2020] [Accepted: 03/03/2020] [Indexed: 01/06/2023]
Abstract
This study aimed to investigate the effects of temperature on the quality of vermicompost and microbial profiles of dewatered sludge during vermicomposting. To do this, fresh sludge was separately vermicomposted with the earthworm Eisenia fetida under different temperature regimes, specifically, 15 °C, 20 °C, and 25 °C. The results showed that the growth rate of earthworms increased with temperature. Moreover, the lowest organic matter content along with the highest electrical conductivity, ammonia, and nitrate content in sludge were recorded for 25 °C indicating that increasing temperature significantly accelerated decomposition, mineralization, and nitrification. In addition, higher temperature significantly enhanced microbial activity in the first 30 days of vermicomposting, also exhibiting the fastest stabilization at 25 °C. High throughput sequencing results further revealed that the alpha diversity of the bacterial community was enhanced with increasing temperature resulting in distinct bacterial genera in each vermicompost. This study suggests that quality of vermicompost and dominant bacterial community are strongly influenced by the contrasting temperature during vermicomposting of sludge, with the optimal performance at 25 °C.
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43
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Li Y, Yang X, Gao W, Qiu J, Li Y. Comparative study of vermicomposting of garden waste and cow dung using Eisenia fetida. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:9646-9657. [PMID: 31925695 DOI: 10.1007/s11356-020-07667-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 01/07/2020] [Indexed: 06/10/2023]
Abstract
Vermicomposting is the process of composting using worms and is applied in waste management to produce high-quality organic fertilizer. Garden waste (GW) is often mixed with other raw materials for vermicomposting. In the present study, the feasibility of vermicomposting using only GW was investigated in comparison with cow dung (CD). The total nitrogen (TN), total phosphorus (TP), and total potassium (TK) contents and the electrical conductivity increased, while total organic carbon (TOC) and the C/N ratio decreased in both substrates after vermicomposting. The nutrient content (TN, TP, and TK) of the GW vermicompost was promoted less than that in CD. Scanning electron microscopy images and specific surface area analysis showed that the vermicompost was strongly disaggregated and became more compacted and fragmented compared with the raw substrates. No mortality of earthworms was observed in GW; however, the earthworms had a higher mean body weight and reproduction rate in CD than that in GW. There were higher bacterial community richness and diversity in the vermicompost than that in the raw materials, and the dominant phylum species were Proteobacteria, Actinobacteria, and Bacteroidetes. Redundancy analysis demonstrated that TN, C/N ratio, and TOC play an important role in bacterial community dynamics. These data indicate that vermicomposting is a robust process that is suitable for the management of GW.
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Affiliation(s)
- Yingkai Li
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xiaolei Yang
- Shanghai Agricultural Technology Extension Service Center, Shanghai, 201103, China
| | - Wen Gao
- Shanghai Shengran Agricultural Technology Co., Ltd, Shanghai, 201401, China
| | - Jiangping Qiu
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yinsheng Li
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
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Balachandar R, Baskaran L, Yuvaraj A, Thangaraj R, Subbaiya R, Ravindran B, Chang SW, Karmegam N. Enriched pressmud vermicompost production with green manure plants using Eudrilus eugeniae. BIORESOURCE TECHNOLOGY 2020; 299:122578. [PMID: 31865155 DOI: 10.1016/j.biortech.2019.122578] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/22/2019] [Accepted: 12/05/2019] [Indexed: 06/10/2023]
Abstract
Vermicomposting of pressmud with cow dung and nitrogenous green manures (Gliricidia sepium and Leucaena leucocephala) was carried out using Eudrilus eugeniae (50 days). The reduction in pH, total organic carbon, C/N ratio, water-soluble organic carbon (Cws)/Norg and C/P ratios, and a pronounced increase in NPK contents and microbial population in vermicompost were observed. An enhanced TKN of 3.80% and 3.45% was recorded in vermicomposts of pressmud + cow dung + L. leucocephala (2:1:1) and pressmud + cow dung + G. sepium (2:1:1) respectively. The C/N and Cws/Norg ratios in vermicompost ranged from 11.86 to 16.66 and 0.53 to 1.33, respectively. The activity of dehydrogenase, urease, acid and alkaline phosphatase declined towards the end, indicating the progression of vermicompost maturity. The pressmud and green manure substrates promoted more biomass of E. eugeniae, while cow dung with green manure combination favored reproduction. The amendment of cow dung and green manure plants to pressmud (2:1:1 ratio) results in nutrient-enriched vermicompost production.
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Affiliation(s)
- Ramalingam Balachandar
- Department of Biotechnology, Aarupadai Veedu Institute of Technology, Vinayaka Missions Research Foundation (Deemed to be University), Paiyanoor, Chennai 603 104, Tamil Nadu, India
| | | | - Ananthanarayanan Yuvaraj
- Vermitechnology and Ecotoxicology Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem 636 011, Tamil Nadu, India
| | - Ramasundaram Thangaraj
- Vermitechnology and Ecotoxicology Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem 636 011, Tamil Nadu, India
| | - Ramasamy Subbaiya
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha Nagar, Chennai 602 105, Tamil Nadu, India
| | - Balasubramani Ravindran
- Department of Environmental Energy and Engineering, Kyonggi University, Youngtong-Gu, Gyeonggi-Do 16227, South Korea
| | - Soon Woong Chang
- Department of Environmental Energy and Engineering, Kyonggi University, Youngtong-Gu, Gyeonggi-Do 16227, South Korea
| | - Natchimuthu Karmegam
- Department of Botany, Government Arts College (Autonomous), Salem 636 007, Tamil Nadu, India.
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Biruntha M, Karmegam N, Archana J, Karunai Selvi B, John Paul JA, Balamuralikrishnan B, Chang SW, Ravindran B. Vermiconversion of biowastes with low-to-high C/N ratio into value added vermicompost. BIORESOURCE TECHNOLOGY 2020; 297:122398. [PMID: 31759857 DOI: 10.1016/j.biortech.2019.122398] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 06/10/2023]
Abstract
Seaweed (T1), sugarcane trash (T2), coir pith (T3) and vegetable waste (T4) with cowdung (1:1, w/w) were vermicomposted using Eudrilus eugeniae (50 days). The pH in vermicomposts showed a decrease while electrical conductivity showed increment. The organic matter content, organic carbon, lignin, cellulose, C/N and C/P ratios in vermicompost was significantly lower than compost. Total NPK contents of vermicompost were significantly elevated (P < 0.05) with 12.04-63.75%, 19.05-31.58% and 22.47-42.55%, respectively. The significantly higher growth rate of 1.41 and 7.74 mg/worm/day was observed in T1 on 10th and 50th day respectively, with 23.91 initial C/N ratio; while it was 0.85 and 4.81 mg/worm/day in T4 with 69.81 initial C/N ratio. A similar pattern was reflected in cocoon production, hatchling success and hatchling number/cocoon. Results revealed that vermicompost quality, worm growth, and reproduction depend on C/N ratio. The study suggests that amendment materials like cowdung are necessary to reduce C/N ratio for effective vermicomposting.
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Affiliation(s)
- Muniyandi Biruntha
- Vermiculture Technology Laboratory, Department of Animal Health and Management, Alagappa University, Karaikudi 630 003, Tamil Nadu, India
| | - Natchimuthu Karmegam
- Department of Botany, Government Arts College (Autonomous), Salem 636 007, Tamil Nadu, India
| | - Jeyaprakasam Archana
- Vermiculture Technology Laboratory, Department of Animal Health and Management, Alagappa University, Karaikudi 630 003, Tamil Nadu, India
| | - Balan Karunai Selvi
- Department of Botany, V. V. Vanniaperumal College for Women (Autonomous), Virudhunagar 626 001, Tamil Nadu, India
| | - James Arockia John Paul
- Department of Zoology, Arumugam Pillai Seethai Ammal College, Tiruppattur 630 211, Tamil Nadu, India
| | - B Balamuralikrishnan
- Department of Food Science and Biotechnology, Sejong University, Seoul, Republic of Korea
| | - S W Chang
- Department of Environmental Energy and Engineering, Kyonggi University, Youngtong - Gu, Gyeonggi - Do 16227, South Korea
| | - B Ravindran
- Department of Environmental Energy and Engineering, Kyonggi University, Youngtong - Gu, Gyeonggi - Do 16227, South Korea.
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46
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Devi C, Khwairakpam M. Bioconversion of Lantana camara by vermicomposting with two different earthworm species in monoculture. BIORESOURCE TECHNOLOGY 2020; 296:122308. [PMID: 31698221 DOI: 10.1016/j.biortech.2019.122308] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 06/10/2023]
Abstract
The experiments were performed in bamboo containers with five different reactors (Ref1/Ree1, Ref2/Ree2, Ref3/Ree3, Ref4/Ree4, Ref5/Ree5) of varying substrate and cow dung ratio for earthworms i.e. Eisenia fetida and Eudrilus euginae. Physicochemical properties of the vermicompost produced by each earthworm were evaluated and the performance of both the earthworms was compared. pH was within 7.1-7.5 for all the reactors. The highest Total Kjedahl Nitrogen (TKN) value was found for Ref4 with 2.78% whereas it was lowest for Ree1 (2.48%). The highest 32.46% change in Total Organic Carbon (TOC) was observed for Ref3. At the end of the process C/N ratio was found within 11-14 for both the earthworms. In terms of growth both the earthworms performed well whereas highest net biomass gain for Eisenia fetida in Ref3 with 37.5%. Vermicomposting is found to be beneficial for the management of Lantana camara. Eisenia fetida performed better as compared to Eudrilus euginae.
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Affiliation(s)
- Chaichi Devi
- Department of Civil Engineering, National Institute of Technology Meghalaya, Shillong 793003, Meghalaya, India.
| | - Meena Khwairakpam
- Centre for Rural Technology, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
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47
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Assessment of a Cattle Manure Vermicomposting System Using Material Flow Analysis: A Case Study from Uganda. SUSTAINABILITY 2019. [DOI: 10.3390/su11195173] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Growth in cattle population is associated with increased manure generation whose current management in low-income countries is associated with health and environmental problems as well as low utilization rates. This trend can be reversed by promoting better manure management technologies. This study assessed vermicomposting as one of the technologies to manage organic wastes, using the case study in Uganda. A vermicomposting system using cattle manure and earthworms (Eudrilus euginea) was monitored for one year with the harvesting of products (compost, earthworm biomass) after every three months. Vermicompost samples from the beginning of the experiment and after every harvest were analyzed for the following parameters: pH, ash content, volatile and total solids, nutrients N, P, K, and C. Emissions of CO2, CH4, NH3, and N2O were also measured. Material flow analysis was used to determine the flows and retention of nutrients within the system. Results showed that total solids, ash, N, P, and K content significantly increased, while contents of volatile solids and C, as well as the pH, significantly decreased over time. Of the materials that entered the vermicomposting system, 46% went to vermicompost, 2% into earthworms, and 52% was lost to the atmosphere. Substance flow analysis showed that 30% of C went to vermicompost, 69% was emitted to the atmosphere, and 2% ended up in earthworms while 75% of N was transferred to vermicompost, 7% went to earthworms, and 18% escaped into the atmosphere. The cumulative emissions were 102 g CO2 kg−1 waste, 7.6 g CH4 kg−1 waste, and 3.943 × 10−5 g N2O kg−1 waste on a dry basis, while NH3 was not detected throughout the measurement time. Compared to other manure management methods, vermicomposting demonstrated good potential in conserving nutrients as well as reducing greenhouse gas emissions.
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48
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Wu Z, Yin B, Song X, Zhao Q. Effects of different lipid contents on growth of earthworms and the products during vermicomposting. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2019; 37:934-940. [PMID: 31328677 DOI: 10.1177/0734242x19861683] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In China, the production of kitchen waste was more than 97 million tons per year in 2016. The high lipid content of kitchen waste makes it hard to degrade. Vermicomposting is a kind of low-cost biotechnology through the combination of earthworms and microbes, which could be considered in converting kitchen waste to valuable products. However, the effect of the lipid in kitchen waste on earthworms and composting is not known yet. The objective of this study was to analyze the effects of lipid on vermicomposting and to derive the most suitable lipid content in vermicomposting. In our study, kitchen waste with four different lipid contents was prepared: 0% (A), 5% (B), 10% (C) and 15% (D). The earthworm growth and chemical characters of substrates were measured at the interim (14 days) and the end (28 days) of vermicomposting. Our results showed that the high content of lipid had negative effects on growth of earthworms and products in vermicomposting. The kitchen waste with lower lipid content could be better composted by earthworms. The average body weight of the earthworm increased by 9% in treatment A. Total nitrogen, available phosphorus, available potassium and nitrate nitrogen of treatment A with 0% (measured value: 5%) lipid content were significantly higher than those in other treatments. Meanwhile, treatment A had the lowest carbon/nitrogen ratio which might be due to hindrances in the breathing and activities of earthworms. The high content of lipid makes growth of aerobic bacteria such as nitrifying bacteria difficult.
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Affiliation(s)
- Zexuan Wu
- School of Agriculture and Biology, Shanghai Jiao Tong University, China
| | - Bangyi Yin
- School of Agriculture and Biology, Shanghai Jiao Tong University, China
| | - Xu Song
- School of Agriculture and Biology, Shanghai Jiao Tong University, China
| | - Qi Zhao
- School of Agriculture and Biology, Shanghai Jiao Tong University, China
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49
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Pre-Composting and Vermicomposting of Pineapple (Ananas Comosus) and Vegetable Waste. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9173564] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In the last few years, pineapple (Ananas comosus) has grown to be considered one of the most important fruits worldwide due to its high production and consumption. However, inadequate disposal of the waste it generates, which represents up to 67% of its total weight, can have environmental impacts. Therefore, this study focuses on the degradation of organic waste produced in the industrialized processing of pineapple waste (rinds, crowns and cores), which undergo a process of vermicomposting at a laboratory level. The methodology used included the pre-composting process and vermicomposting through Californian red worms using mixes tested in three different proportions of pineapple waste (PR) and load material (LM) made up of vegetable waste and eggshells. Testing revealed that the pre-composting process for this waste was feasible as a first stage of the degradation process; the characteristics of the pre-composted material allowed a favorable adaptation for both the worms and general degradation. It also showed efficiencies in the removal of organic carbon between 36.40% and 45.78%. Results also showed the total nitrogen content remained between 1.2% and 2.2% and the carbon/nitrogen relation (C/N) had values under 20 as required for high-quality vermicompost.
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50
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Zhang J, Sugir ME, Li Y, Yuan L, Zhou M, Lv P, Yu Z, Wang L, Zhou D. Effects of vermicomposting on the main chemical properties and bioavailability of Cd/Zn in pure sludge. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:20949-20960. [PMID: 31115804 DOI: 10.1007/s11356-019-05328-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 04/30/2019] [Indexed: 06/09/2023]
Abstract
To study the effects of vermicomposting on the chemical properties and bioavailability of Cd/Zn in sludge, earthworms (Eisenia foetida) at different densities were inoculated into pure sludge, and sludge and earthworms were collected regularly to determine the earthworm biomass, the main chemical indexes, the structure of the functional groups, and the Cd/Zn content in the sludge. The results showed that the growth curve of earthworms in pure sludge could be well fitted by the logistic model. Earthworm activity eventually reduced the total organic carbon (TOC), fulvic acid (FA), and C/N ratio and increased the electrical conductivity (EC), total nitrogen (TN), humic acid (HA), and HA/FA ratio in the sludge. TOC, TN, and pH inhibited the bioavailability of Cd/Zn, while HA and EC promoted the bioavailability of Cd/Zn. Earthworm activity ultimately increased the content of Cd/Zn in the sludge. The bioavailability of Cd/Zn was reduced during the rapid growth period of the earthworms but increased during the stable growth period of the earthworms. A suitable vermicomposting time should be determined to ensure the activation or passivation of Cd/Zn.
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Affiliation(s)
- Jizhou Zhang
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, China
- National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation, Institute of Natural Resources and Ecology Heilongjiang Academy of Sciences, Harbin, 150040, China
| | - Maral Erdene Sugir
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, China
| | - Yunying Li
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, China
| | - Lei Yuan
- National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation, Institute of Natural Resources and Ecology Heilongjiang Academy of Sciences, Harbin, 150040, China
| | - Meng Zhou
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, China
- Department of Biological Center, Harbin Academy of Agricultural Sciences, Harbin, 150028, China
| | - Pin Lv
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, China
- National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation, Institute of Natural Resources and Ecology Heilongjiang Academy of Sciences, Harbin, 150040, China
| | - Zhimin Yu
- National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation, Institute of Natural Resources and Ecology Heilongjiang Academy of Sciences, Harbin, 150040, China
| | - Limin Wang
- National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation, Institute of Natural Resources and Ecology Heilongjiang Academy of Sciences, Harbin, 150040, China
| | - Dongxing Zhou
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, China.
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