Air Quality

2015 Corporate Responsibility report > Environmental Resilience

Air Quality

Nesher takes all the necessary measures to ensure compliance with emission standards requirements and allocates considerable resources to prevent air pollution.

All of Nesher’s production facilities are equipped with state of the art systems for filtering of particulate matter which might otherwise be emitted from the production process. Most of the air pollutants emitted in the combustion process are eliminated within the cement kilns.

In 2012, the CSI updated its guidelines for monitoring the cement industry’s major pollutants. According to the updated guidelines, by 2015, member companies of the CSI will continuously monitor a number of the major pollutants produced by the cement industry. The pollutants requiring continuous monitoring under the terms of this voluntary program are: Particulate Matter (PM), Nitrogen Oxides (NOx), and Sulfur Oxides (SOx). The Nesher Ramla and Haifa plants are already in compliance with these guidelines.

Comparison of air quality performance

Gram per ton of clinker

Dust emissions

(2015 data)
CSI emission range
(2011 data)

Nitrogen Oxides


(2015 data)
CSI emission range
(2011 data)

Sulphur Oxides


(2015 data)
CSI emission range
(2011 data)

Air Quality

System for stack monitoring and environmental monitoring, including:

  • Monitoring devices installed in the kiln stacks, cement mills and coal mills in order to monitor any change in the concentration of pollutants.
  • Tests of particulate matter in the plant’s facilities are performed by qualified professionals
    Environmental monitoring units at Yad Rambam and Karmei Yosef operating 24 X 7.

Collecting Kiln Dust:

In 2014 a new silo was installed in the Ramla plant, designed to collect kiln dust – the material that accumulates in the electro-filter and the cooling towers. The new silo, which took seven months to build and was completed in May 2014, allows better control over the chemical composition of clinker. This contributes significantly to increasing clinker quality and output, energy inputs and more efficient use of raw materials.

SNCR systems – Reduction of Nitrogen Oxides (NOx):

Nesher invests heavily in reducing environmental impacts in general and Nitrogen Dioxides in particular. In compliance with the requirements of the Israeli standard, Nesher installed innovative systems for the reduction of Nitrogen Dioxides (SNCR) in both production system kilns at the Ramla plant. Nesher activated these systems before it was required to do so by law, despite the high operating costs involved – millions of NIS per year. Due to the implementation of such innovative technological systems that significantly reduce Nitrogen Dioxide emissions, along with significant investments in environmental protection, we have witnessed a continuous improvement in the Company's emission levels.

Major air pollutants



2015 secondary air pollutants kg

Mercury (Hg)56
Manganese (Mn)561
Lead (Pb)23
Chrome (Cr)38
Copper (Cu)155
Nickel (Ni)45
Vanadium (V)26
Cobalt (Co)53.1
Volatile organic compounds 165,931

The data includes the Nesher Ramla plant, the Ramla quarry, and the Nesher Haifa plant.
Nesher follows the various air quality indexes in accordance with the CSI protocol recommendations. The following air pollutants were measured but found to be below the regulatory reporting threshold or below the method detection limit: Antimony, Arsenic, Cadmium, Thallium, and dioxins and PCDD/F.