Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort:
Hottest Latest Alphabetical (A-Z) Alphabetical (Z-A)
Type:
All Topic Review Biography
Topic Review
Water Treatment Residues and Methanogenic Activity in Wastewater-Sludge
The effect of adding alum water treatment residues (WTR) on the methanogenic activity in the digestion of primary domestic wastewater sludge was evaluated through laboratory experiments in sedimentation columns, using total suspended solids (TSS) concentrations from 0.37 to 1.23 g/L. The addition of WTR to primary clarifiers can benefit its effluent water quality in terms of colour, turbidity, chemical oxygen demand (COD), and TSS. However, the presence of WTR can negatively influence the production of methane gas during organic sludge digestion in primary clarifiers, for concentrations of TSS between 14.43 and 25.23 g/L and of VSS between 10.2 and 11.85 g/L. The activity of the Methanothrix sp., curved bacilli, methanococci, and Methanosarcina sp. decreases considerably after 16 days of anaerobic digestion, and methane production seems to only be associated with fluorescent methanogenic bacilli.
  • 841
  • 17 Mar 2022
Topic Review
Evolution of Microgrid Technology
Microgrids are energy systems that can operate independently or in conjunction with the main electricity grid. There are numerous subdomains of microgrid technology research, each of which focuses on a distinct component of microgrid design, operation, and management. Energy storage, control, power electronics and power quality, renewable energy integration, stability, storage, protection and cybersecurity, regulation and distribution, and economic and business models are some of the major areas of microgrid technology study.
  • 823
  • 06 May 2023
Topic Review
Spent Lithium-Ion Batteries Recycling
An urgent demand for recycling spent lithium-ion batteries (LIBs) is expected in the forthcoming years due to the rapid growth of electrical vehicles (EV). To address these issues, various technologies such as the pyrometallurgical and hydrometallurgical method, as well as the newly developed in-situ roasting reduction (in-situ RR) method were proposed in recent studies.
  • 819
  • 29 Oct 2021
Topic Review
Residual Biomass Resources in Kazakhstan
Agricultural, animal and municipal solid waste are available to produce energy in Kazakhstan based on combustion technologies; however, animal waste and agricultural are the main potential sources with 61.02% and 38.34% of the theoretical total biomass potential energy analyses, respectively. Inadequate disposal of residual biomass can cause soil contamination, compromise the quality of water resources and promote environmental disturbances among species. As a consequence, the residual biomass before its final disposal needs to undergo an appropriate treatment process to reduce its potential environmental risk. Residual biomass from agricultural, animal and solid waste has been considered for energy production in Kazakhstan, to be incorporated into existing fuel storage and handling systems and be co-fired. Energy valorization from residual biomass would also be a key component in waste management into valuable products in a circular economy.
  • 805
  • 01 Nov 2022
Topic Review
IoT
This entry presents the problems of powering wireless sensor networks operating in the structures of the Internet of Things (IoT). This issue was discussed on the example of a universal end node in IoT technology containing RFID (Radio Frequency Identification) tags. The basic methods of signal transmission in these types of networks are discussed and their impact on the basic requirements such as range, transmission speed, low energy consumption, and the maximum number of devices that can simultaneously operate in the network. The issue of low power consumption of devices used in IoT solutions is one of the main research objects. The analysis of possible communication protocols has shown that there is a possibility of effective optimization in this area. The wide range of power sources available on the market, used in nodes of wireless sensor networks, was compared. The alternative possibilities of powering the network nodes from Energy Harvesting (EH) generators are presented.
  • 803
  • 25 May 2021
Topic Review
Sustainable Product Innovation Based on Triple Bottom Line
Sustainable product innovation is essential for the realisation of sustainability through sustainable consumption. From the managerial perspective, sustainable products and service development require interdisciplinary knowledge, and the measurement of the environmental and socio-economic performance are significant indications for decision-making, ecolabelling scheme, marketing, etc. Therefore, incorporating the sustainability know-how with the knowledge of life-cycle thinking and LCM, to facilitate co-creation with engineers and value chain actors to develop circular economy business models is necessary. Furthermore, utilising a sustainable product and service innovation framework, such as Sustainable Product Development and Service (SPDS) approach, can be the groundwork for integrating businesses’ sustainability efforts based on the product life cycle. With the integration of Omni-channel marketing methods, the communication of sustainability information of products and services can also improve the consumer experience and empower customers to become loyal brand advocators, creating a positive circularity toward sustainable business.
  • 797
  • 22 Jul 2022
Topic Review
Microbial Desalination Cell Performance Indicators and Limiting Factors
Microbial desalination cells (MDCs) are promising bioelectrochemical systems for desalination using the bacteria-generated electricity from the biodegradation of organic wastes contained in the wastewater. Instead of being a sustainable and eco-friendly desalination technology, the large-scale application of MDC was limited due to the high installation cost of the metal-catalyst-coated cathode electrode and the poor performance of the cathode in long-term operation due to catalyst fouling.
  • 796
  • 01 Nov 2022
Topic Review
Geopolymers
Geopolymers represent novel material types at the interface of glass, ceramics, and materials based on traditional inorganic bonds. Geopolymers utilize waste materials as source material and activate the materials with alkaline activators to act as binders. Metakaolin is categorised as an aluminosilicate material because it contains variable amounts of alumina and silica. Geopolymers offer benefits due to their ease of synthesis and low emissions of greenhouse gases such as CO2, SO2, and NOx.
  • 789
  • 30 Sep 2022
Topic Review
Carbamazepine in water and wastewater treatment plants
Carbamazepine (CBZ) is one of the most frequently used drugs for the medical treatment of epilepsy and bipolar disorder, being a mood stabilizer. It is metabolized in the liver and excreted mainly as hydroxylated and conjugated metabolite and only around 5% as an unchanged drug.
  • 786
  • 12 Nov 2021
Topic Review
Geopolymers vs. Cement Matrix Materials
Geopolymers are spreading more and more in the cementitious materials field, exhibiting technological properties that are highly competitive to conventional Portland concrete mixes.
  • 764
  • 24 Aug 2021
  • Page
  • of
  • 31
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of Social Sciences
Encyclopedia of COVID-19
Encyclopedia of Fungi
Encyclopedia of Digital Society, Industry 5.0 and Smart City
ScholarVision Creations
Feedback