Target Prelims 2024: Day 6
1. Sludge For Use as Fertilizer: It is the thick residue produced during the treatment of wastewater or sewage in sewage treatment plants. Sludge is a significant source of organic chemicals, heavy metals, and bacterial contaminants, with its composition varying based on the source and treatment methods.
Sludge can be utilized as a fertilizer or soil amendment due to its nutrient content and organic matter. When properly treated and processed, sludge can provide beneficial nutrients and improve soil fertility.
**Nutrient Content: Sludge contains valuable nutrients such as nitrogen, phosphorus, and potassium (N, P, K), as well as micronutrients like iron, zinc, and copper. These nutrients are essential for plant growth and development.
**Organic Matter: Sludge is rich in organic matter, which improves soil structure, water-holding capacity, and nutrient retention. Organic matter also encourages the growth of beneficial soil microorganisms, enhancing overall soil health.
**Sludge can replace or supplement commercial fertilizers, reducing the reliance on chemical fertilizers and promoting sustainable agriculture.
**Soil Improvement: Applying sludge to agricultural land can help improve soil fertility and productivity,
particularly in degraded or nutrient-deficient soils.
Arth Ganga aims to monetise, and reuse treated wastewater and sludge which is a sustainable viable economic model conceptualized under the Namami-Gange program to integrate people in the basin with Ganga Rejuvenation.
2. ADITYA L-1:
Launched: September 2, 2023 to Study the Sun from a halo orbit around L1 with Launch vehicle: PSLV XL
*Investigation of dynamics in the solar upper atmosphere (corona and chromosphere) & Investigation of solar flares, chromospheric and coronal heating, physics of partly ionised plasma, and the start of coronal mass ejections (CMEs).
•Determine the series of events that take place at the base, extended corona, and chromosphere and eventually result in solar eruptions & Space weather drivers (solar wind dynamics, composition, and origin).
It ill offer data in the CME acceleration regime, which is not continuously observed & on-board AI to identify solar flares and CMEs for optimal data volume and observations.
3. XPoSat:
• The ISRO is collaborating with the Raman Research Institute (RRI), Bengaluru to build the X-Ray Polarimeter Satellite (XPoSat).
It is India’s 1st dedicated polarimetry mission to study various dynamics of bright astronomical X-ray sources in extreme conditions and the spacecraft will carry two scientific payloads in a low earth orbit.
The primary payload POLIX (Polarimeter Instrument in X-rays) will measure the polarimetry parameters.
•The XSPECT (X-ray Spectroscopy and Timing) payload will give spectroscopic information.
•Polarization refers to the orientation of the electric field in an electromagnetic wave, and studying the polarization of X-rays can provide valuable information about the physical processes occurring in extreme environments, such as around black holes and neutron stars.
•It is only the world’s 2nd polarimetry mission after NASA’s Imaging X-ray Polarimetry Explorer (IXPE) that was launched in 2021 &
XPoSat will help in Studying Black Holes, Exploring Neutron Stars, and Probing Active Galactic Nuclei (AGN).
4. Space Science and Technology Awareness Training (START):
ISRO has announced a new Space Science and Technology Awareness Training (START) About START Programme with Objective To provide introductory-level training in Space Science and Technology to build human capacity for future Space Science and research.
• To Post-graduate and final-year undergraduate students of physical sciences and technology
•Field Coverage: Various domains of space science, including Astronomy & Astrophysics, Heliophysics & Sun-Earth interaction, Instrumentation, and Aeronomy.
•Delivery Mode: Online training programme through the Jigyasa portal.