Environments - MDPI
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Modification of Hardwood Derived Biochar to Improve Phosphorus Adsorption
Environments - MDPI - Tập 8 Số 5 - Trang 41
The excessive application of phosphorus in agricultural lands leads to serious
environmental issues. Efficient application is beneficial from an economic and
environmental perspectives. Biochar can be used as a carrier for slow release of
phosphate. However, its adsorption capacity is limited. In this work, biochar
was prepared at different pyrolysis temperatures (350–550 °C). The biochar
prepared...
Modified Biochars and Their Effects on Soil Quality: A Review
Environments - MDPI - Tập 9 Số 5 - Trang 60
Biochar (BC) has attracted attention due to its impacts on soil quality by
enhancing soil fertility, carbon storage and contaminants immobilization. BC
also induces changes in microbial community structure and enhances crop
productivity in long term scenarios compared to many other organic amendments.
However, information related to the role of modified BCs in altering the soil
quality is still sc...
Life Cycle Assessment and Water Footprint of Hydrogen Production Methods: From Conventional to Emerging Technologies
Environments - MDPI - Tập 5 Số 2 - Trang 24
A common sustainability issue, arising in production systems, is the efficient
use of resources for providing goods or services. With the increased interest in
a hydrogen (H2) economy, the life-cycle environmental performance of H2
production has special significance for assisting in identifying opportunities
to improve environmental performance and to guide challenging decisions and
select betwee...
Occupational Fine/Ultrafine Particles and Noise Exposure in Aircraft Personnel Operating in Airport Taxiway
Environments - MDPI - Tập 6 Số 3 - Trang 35
The occupational exposure to airborne fine and ultrafine particles (UFPs) and
noise in aircraft personnel employed in airport taxiway was investigated.
Stationary samplings and multiple personal sampling sites and job tasks were
considered. Size distribution, particle number concentrations, lung dose surface
area were measured by personal particle counters and by means of an electric low
pressure ...
Solvent-Based Elimination of Organic Matter from Marine-Collected Plastics
Environments - MDPI - Tập 8 Số 7 - Trang 68
The physical-chemical characterization of plastic litter from the marine
environment requires the prior removal of the biofouling attached to their
surface without causing any degradation in the polymer. The absence of a
standardized protocol for digesting biofouling and organic matter of both macro
and microplastic samples extracted from seawater has been the main motivation
for this research wor...
Microplastic Contamination in Freshwater Environments: A Review, Focusing on Interactions with Sediments and Benthic Organisms
Environments - MDPI - Tập 7 Số 4 - Trang 30
Plastic is one of the most commonly produced and used materials in the world due
to its outstanding features. However, the worldwide use of plastics and poor
waste management have led to negative impacts on ecosystems. Plastic degradation
in the environment leads to the generation of plastic particles with a size of
<5 mm, which are defined as microplastics (MPs). These represent a global
concern ...
Dissolution of Ag Nanoparticles in Agricultural Soils and Effects on Soil Exoenzyme Activities
Environments - MDPI - Tập 8 Số 3 - Trang 22
To assess environmental risks related to the mobility and toxicity of AgNPs, the
chemical availability of AgNPs and polyvinylpyrrolidone-coated AgNPs (PVP-AgNPs)
in three agricultural soils was quantified in a pot experiment. Porewater
collection and soil extractions with 0.01 M CaCl2, 0.4 M Glycine (pH 1.5) and
0.05 M NH4-EDTA were performed. The effect on soil exoenzyme activities was also
asses...
Biogas Production by Co-Digestion of Canteen Food Waste and Domestic Wastewater under Organic Loading Rate and Temperature Optimization
Environments - MDPI - Tập 6 Số 2 - Trang 16
The objective of this study was to characterize biogas production performance
from the co-digestion of food waste and domestic wastewater under mesophilic (35
± 1 °C) and thermophilic (55 ± 1 °C) conditions. The food waste used as a
co-substrate in this study was collected from a main canteen at the Hatyai
campus of Prince of Songkla University, Songkhla Province, Thailand. The optimum
co-digestio...
Biogas Production from Food Residues—The Role of Trace Metals and Co-Digestion with Primary Sludge
Environments - MDPI - Tập 7 Số 6 - Trang 42
The majority of municipal Wastewater Treatment Plants (WWTPs) in Sweden produce
biogas from sewage sludge. In order to increase the methane production,
co-digestion of internal sludge with Organic Fraction of Municipal Solid Waste
(OFMSW) might be feasible in the future. The objective of this study was
therefore to find a beneficial solution for the utilization of OFMSW at the WWTP
in Varberg, Swe...
Capitalizing on Cellular Technology—Opportunities and Challenges for Near Ground Weather Monitoring
Environments - MDPI - Tập 5 Số 7 - Trang 73
The use of existing measurements from a commercial wireless communication system
as virtual sensors for environmental monitoring has recently gained increasing
attention. In particular, measurements of the signal level of commercial
microwave links (CMLs) used in the backhaul communication network of cellular
systems are considered as opportunistic sensors for precipitation monitoring.
Research re...
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