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Related Concept Videos

Weak Acid Solutions04:02

Weak Acid Solutions

37.4K
Few compounds act as strong acids. A far greater number of compounds behave as weak acids and only partially react with water, leaving a large majority of dissolved molecules in their original form and generating a relatively small amount of hydronium ions. Weak acids are commonly encountered in nature, being the substances partly responsible for the tangy taste of citrus fruits, the stinging sensation of insect bites, and the unpleasant smells associated with body odor. A familiar example of a...
37.4K
Mixtures of Acids03:27

Mixtures of Acids

19.5K
The pH of a solution containing an acid can be determined using its acid dissociation constant and its initial concentration. If a solution contains two different acids, then its pH can be determined using one of several methods depending upon the relative strength of the acids and their dissociation constants.
A Mixture of a Strong Acid and a Weak Acid
In a mixture of a strong acid and a weak acid, the strong acid dissociates completely and becomes a source of almost all the hydronium ions...
19.5K
Calculating pH Changes in a Buffer Solution02:45

Calculating pH Changes in a Buffer Solution

52.6K
A buffer can prevent a sudden drop or increase in the pH of a solution after the addition of a strong acid or base up to its buffering capacity; however, such addition of a strong acid or base does result in the slight pH change of the solution. The small pH change can be calculated by determining the resulting change in the concentration of buffer components, i.e., a weak acid and its conjugate base or vice versa. The concentrations obtained using these stoichiometric calculations can be used...
52.6K
Ladder Diagrams: Acid–Base Equilibria01:32

Ladder Diagrams: Acid–Base Equilibria

437
Understanding the chemistry between the reagents is necessary for performing any experiment. To this end, scientists have designed a tool called a ladder diagram, which is a graphical representation that helps illustrate the chemistry of a system.
A ladder diagram for acid-base equilibria consists of a vertical axis that represents pH and horizontal bars (steps on the ladder) that help position all the pKa values in the system. At equilibrium, the pH value of the system corresponds to one of...
437
Design Example: Creating a Hydraulic Model of a Dam Spillway01:21

Design Example: Creating a Hydraulic Model of a Dam Spillway

119
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
119
Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

37
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
37

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Related Experiment Video

Updated: May 18, 2026

Operation of a 25 KWth Calcium Looping Pilot-plant with High Oxygen Concentrations in the Calciner
06:34

Operation of a 25 KWth Calcium Looping Pilot-plant with High Oxygen Concentrations in the Calciner

Published on: October 25, 2017

Acidification potential estimation for small hydropower using LCA methodology in India.

Varun Goel1, Himanshu Nautiyal2, Janmejay Kumar1

  • 1Department of Mechanical Engineering, NIT Hamirpur, Hamirpur, India.

Scientific Reports
|February 17, 2025
PubMed
Summary
This summary is machine-generated.

Small hydropower (SHP) systems have varying acidification potential, with emissions ranging from 0.065 to 0.325 g/kWh. Optimizing SHP project design can significantly reduce environmental impacts, enhancing their sustainability.

Keywords:
AcidificationElectricityEmissionsLife Cycle Assessment (LCA)Small hydropower (SHP)

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Area of Science:

  • Environmental Science
  • Renewable Energy Engineering

Background:

  • Small hydropower (SHP) systems are promoted for sustainability but generate emissions during construction and maintenance.
  • Quantifying these emissions is crucial for accurate environmental impact assessments.

Purpose of the Study:

  • To evaluate the life cycle acidification potential of various SHP projects in India.
  • To develop predictive models for estimating SHP-related SO2eq emissions.

Main Methods:

  • Life Cycle Assessment (LCA) techniques were employed.
  • Analysis covered different SHP project types (run-of-river, canal-based, dam-toe), sizes, and locations in India.

Main Results:

  • Life cycle acidification potential varied from 0.065 to 0.325 g/kWh.
  • Emissions were influenced by project type, capacity, and geographical location.
  • Developed predictive models demonstrated high accuracy in emission estimation.

Conclusions:

  • SHP projects contribute to acidification potential, necessitating careful environmental management.
  • Optimized project design and parameter selection can substantially minimize acidification.
  • SHP can be a cleaner renewable energy alternative with improved environmental considerations.