The Issue of Plastic and Microplastic Pollution in Soil

2019 ◽  
Vol 56 (3) ◽  
pp. 484-487 ◽  
Author(s):  
Valentina Constanta Tudor ◽  
Dorina Nicoleta Mocuta ◽  
Ruxandra Florina Teodorescu ◽  
Dragos Ion Smedescu
Keyword(s):  
Water Pollution ◽  
Organic Matter ◽  
Soil Pollution ◽  
Aquatic Environment ◽  
Negative Impact ◽  
Plastic Material ◽  
Soil Biota ◽  
Toxic Substances

Soil pollution with plastics represents a great threat to plants, animals, but especially to humans, as a very small quantity of the plastic which is discarded daily is recycled or incinerated in waste facilities, much of it reaching landfills where their decomposition lasts up to 1000 years and during this time the toxic substances penetrate the soil and the water. If, initially, the pollution with plastics has been identified and recognized in the aquatic environment, recent studies show that plastics residues exist in huge quantities in the soil. The present study focuses on the analysis of factors that pollute soil, so the various studies that have been carried out claim that soil pollution with plastic is much higher and increases in an aggressive manner, being estimated to be 4 to 23 times higher than water pollution with plastics, and the accumulation of microplastics in the soil has a negative impact on soil biota. Thus, once the plastic material accumulates in the soil, it is assimilated to organic matter and the mineral substitutes of the soil and persists for several hundred years.

Fish farming in Denmark: environmental impact of regulative legislation

1995 ◽  
Vol 31 (10) ◽  
pp. 73-84 ◽  
Author(s):  
T. M. Iversen
Keyword(s):  
Organic Matter ◽  
Environmental Impact ◽  
Freshwater Fish ◽  
Aquatic Environment ◽  
Action Plan ◽  
Fish Farming ◽  
Fish Farms ◽  
Nitrogen And Phosphorus ◽  
Local Impact ◽  
The Impact

The main environmental problems associated with fish farming in Denmark are attributable to the dam, the “dead reach” and nutrient and organic matter discharge. The environmental regulation of fish farming in Denmark started with the Environmental Protection Act of 1974, the Statutory Order of 1985 forbidding wet feed, and the Action Plan on the Aquatic Environment of 1987. In the case of freshwater fish farms, the latter was implemented through the measures stipulated in the 1989 Statutory Order on Fish Farms. The impact of Danish legislative measures to reduce and regulate the environmental effects of freshwater fish farms can be summarized as follows: - the number of fish farms has been reduced from about 800 in 1974 to about 500 at present; - production has tripled since 1974 and has been stable since 1989; - a change from wet to dry feed has reduced the environmental impact of the farms; - the national goals of the Action Plan on the Aquatic Environment of 1987 for reducing fish farm discharges of organic matter, nitrogen and phosphorus have been fulfilled. The main remaining problems are that: - the local impact of fish farms on downstream stream quality is still much too high in about 15% of cases; - the problem of the passage of migrating invertebrates and fish is still unsolved at some farms; - the problems posed by “dead reaches” are still unsolved. It is concluded that sustainable fish farming is possible in Denmark, but with the present technology production will have to be significantly reduced.

Romul_Hum model of soil organic matter formation coupled with soil biota activity. I. Problem formulation, model description, and testing

2017 ◽  
Vol 345 ◽  
pp. 113-124 ◽  
Author(s):  
Alexander Komarov ◽  
Oleg Chertov ◽  
Sergey Bykhovets ◽  
Cindy Shaw ◽  
Marina Nadporozhskaya ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Problem Formulation ◽  
Soil Biota ◽  
Model Description ◽  
Soil Organic Matter Formation

scholarly journals The Role of Mangrove Conservation in Sustainable Tourism

2020 ◽  
Author(s):  
Edwina Dhyani Danaparamita ◽  
Nadiroh . ◽  
Desy Safitri
Keyword(s):  
Water Pollution ◽  
Rapid Growth ◽  
Local Governments ◽  
Negative Impact ◽  
Sustainable Tourism ◽  
Tourism Industry ◽  
Environmental Damage ◽  
Traditional Beliefs ◽  
Mangrove Conservation

The rapid growth of the tourism industry in Indonesia has encouraged innovation in the sector as each business competes to attract domestic and foreign tourists. At the same time, however, this growth is having a negative impact of environmental damage such as water pollution and soil pollution, and also producing a perceived community loss. One option is to reduce the negative impact of tourism is by encouraging the development of ecotourism activities. For example, nearby communities could be encouraged to participate in the management of mangrove conservation ecotourism areas. This study considers how such communities can work with local governments on these projects. This complements traditional beliefs within the Indonesian culture which held that ancestors entrust natural wealth to their descendants to be guarded and utilized wisely. Keywords: conservation, mangrove, sustainable tourism

scholarly journals Pencemaran Tanah Oleh Pestisida Di Perkebunan Sayur Kelurahan Eka Jaya Kecamatan Jambi Selatan Kota Jambi (Studi Keberadaan Jamur Makroza dan Cacing Tanah)

2021 ◽  
Vol 21 (1) ◽  
pp. 460
Author(s):  
Supriatna Supriatna ◽  
Sondang Siahaan ◽  
Indah Restiaty
Keyword(s):  
Soil Pollution ◽  
Pesticide Exposure ◽  
Fungal Spores ◽  
Toxic Substance ◽  
Toxic Chemicals ◽  
Toxic Substances ◽  
Pesticide Pollution ◽  
Vegetable Farmers ◽  
Sampling Locations ◽  
Carbamate Pesticide

Healthy vegetables can only be from healthy and pollution-free farmland, including pesticide pollution. When a harmful or toxic substance has contaminated the surface of the soil, it can evaporate, be swept away by rainwater and or enter the soil. Pollution that enters the soil is then immersed as toxic chemicals in the soil. Toxic substances in the soil can have a direct impact on humans when touched or can contaminate groundwater thus lowering the function of the soil as a place of growing and developing plants. The purpose of this study is to find out the picture of soil pollution by pesticides and the presence of earthworms and mycoriza fungi in the soil. The use of pesticides that are not in accordance with the rules and formulations cause pollution to vegetables and the environment such as soil and water. By taking soil samples and checking the content of pesticides can be known whether the pesticides used have polluted the soil. The presence of worms and mycoriza will be less and less even none at all on the soil that has been polluted. The results showed that from six soil sampling locations found two locations of carbamate pesticide pollution (33.3%), no mycoriza mushrooms were found at one location (15.6%) and earthworms are found throughout the site (100%). Pollution occurs because vegetable farmers and palawija use pesticides exceeding the recommended dose and occur pengulang in the adjacent time span. Mycoriza mushrooms are found in the form of spores, fungal spores have a stronger survival ability compared to the whole stem of the mycoriza fungus. Earthworms derived from manure used as fertilizer, in addition to its ability to avoid toxic soil mucus presence in his body can protect tabnah cacaing from pesticide exposure.

scholarly journals Type of organic fertilizer rather than organic amendment per se increases abundance of soil biota

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11204
Author(s):  
Maria Viketoft ◽  
Laura G.A. Riggi ◽  
Riccardo Bommarco ◽  
Sara Hallin ◽  
Astrid R. Taylor
Keyword(s):  
Organic Matter ◽  
Organic Amendments ◽  
Trophic Levels ◽  
Soil Biota ◽  
Organic Fertilizers ◽  
Nitrogen Fertilizers ◽  
Mineral Fertilizers ◽  
Soil Organisms ◽  
Wide Range

Addition of organic amendments is a commonly used practice to offset potential loss of soil organic matter from agricultural soils. The aim of the present study was to examine how long-term addition of organic matter affects the abundance of different soil biota across trophic levels and the role that the quality of the organic amendments plays. Here we used a 17-year-old fertilization experiment to investigate soil biota responses to four different organic fertilizers, compared with two mineral nitrogen fertilizers and no fertilization, where the organic fertilizers had similar carbon content but varied in their carbon to nitrogen ratios. We collected soil samples and measured a wide range of organisms belonging to different functional groups and trophic levels of the soil food web. Long-term addition of organic and mineral fertilizers had beneficial effects on the abundances of most soil organisms compared with unfertilized soil, but the responses differed between soil biota. The organic fertilizers generally enhanced bacteria and earthworms. Fungi and nematodes responded positively to certain mineral and organic fertilizers, indicating that multiple factors influenced by the fertilization may affect these heterogeneous groups. Springtails and mites were less affected by fertilization than the other groups, as they were present at relatively high abundances even in the unfertilized treatment. However, soil pH had a great influence on springtail abundance. In summary, the specific fertilizer was more important in determining the numerical and compositional responses of soil biota than whether it was mineral or organic. Overall, biennial organic amendments emerge as insufficient, by themselves, to promote soil organisms in the long run, and would need to be added annually or combined with other practices affecting soil quality, such as no or reduced tillage and other crop rotations, to have a beneficial effect.

scholarly journals Study on Analysis and Sedimentation of Alumina Nanoparticles

2019 ◽  
Vol 16 (3) ◽  
pp. 510 ◽  
Author(s):  
Xuehong Zheng ◽  
Yuehan Li ◽  
Ding Chen ◽  
Airong Zheng ◽  
Qikang Que
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Ecological Risk ◽  
Sedimentation Rate ◽  
Aquatic Environment ◽  
Artificial Seawater ◽  
Alumina Nanoparticles ◽  
Natural Seawater ◽  
Ultrasonic Dispersion ◽  
Risk Effects

Dispersion and aggregation behavior of nanoparticles in aquatic environment may be affected by pH, salinity, and dissolved organic matter, which would change its ecological risk. Effects of time, power and temperature on the alumina nanoparticles (nano-Al2O3) ultrasonic dispersion in water were discussed. Al2O3 had a best ultrasonic dispersion for 30 min at 105 W and 30 °C. The concentration of Al2O3 could be measured by ultraviolet (UV) spectrophotometer, and the method was efficient and accurate. Furthermore, the sedimentation rate of Al2O3 was related to pH, salinity, and its concentration in the artificial seawater. When pH was 7.31, approaching the isoelectric point of Al2O3, they aggregated and settled fastest. Settlement coefficient (k) of Al2O3 increased by 3 and 2.7 times while the salinity and its concentration increased. The sedimentation rate was higher in natural seawater than that in artificial seawater. All results indicated that nano-Al2O3 would be removed in aquatic environment.

Characterization of dissolved organic matter for understanding the adsorption on nanomaterials in aquatic environment: A review

Chemosphere ◽  
2020 ◽  
pp. 128690
Author(s):  
Quang Viet Ly ◽  
Tahir Maqbool ◽  
Zhenghua Zhang ◽  
Quyet Van Le ◽  
Xiaochan An ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Aquatic Environment

Aggregation kinetics of microplastics in aquatic environment: Complex roles of electrolytes, pH, and natural organic matter

2018 ◽  
Vol 237 ◽  
pp. 126-132 ◽  
Author(s):  
Shuocong Li ◽  
Hong Liu ◽  
Rui Gao ◽  
Abliz Abdurahman ◽  
Juan Dai ◽  
...  
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Aquatic Environment ◽  
Aggregation Kinetics ◽  
Kinetics Of
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