Page 130 - CW E-Magazine (27-5-2025)

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DIVERSIFICATION WASTEWATER TREATMENT
Coromandel, Sakarni Plaster set up green building IIT Madras develops new technology to treat textile

materials joint venture industry effl uent

Coromandel Chemicals, a subsi- Indian Institute of Technology-
diary of Coromandel International Ltd., Madras (IIT-Madras) has developed
has agreed to form a joint venture with and deployed an advanced new tech-
Sakarni Plaster for the manufacture and nology for effi ciently processing
sale of phospho gypsum-based green wastewater from the textile industry.
building materials.
The discharge from these industries
The joint venture will set up a manu- not only aff ects the aesthetic value and
facturing facility in Visakhapatnam, water clarity but also reduces photo-
adjacent to Coromandel’s fertiliser synthetic activity and poses toxic risks
plant, ensuring reliable feedstock avail- to humans, aquatic organisms, and
ability through gypsum generated as a other life forms. The technology was
by-product from fertiliser operations. deployed at a plant in Tiruppur, and
showed signifi cant reduction in harm-
This joint venture allows Coromandel ful compounds, according to a note
to diversify beyond its core agri- from IIT-Madras.
inputs business, enhance integration “Phospho gypsum products have tution through self-reliance in raw Led by Prof. Indumathi Nambi team scaled up the system to process
synergies and create long-term value. a signifi cantly lower carbon footprint materials. The collaborative project, supported of IIT Madras, the pilot project was 400 litres per day. These trials aim to
For Sakarni, the alliance facilitates the compared to natural gypsum by avoid- by Indo-German Science and Techno- implemented at Kunnakalpalayam optimise the system for real-world
expansion of its product portfolio, and ing mining activity, reducing environ- “The joint venture represents a stra- logy Centre has achieved signifi cant Common Effl uent Treatment Plant application, the note said.
market diversifi cation. mental load and contributing posi- tegic move for Coromandel in advancing milestones in advancing wastewater (CETP) in Tiruppur district during 2023.
tively towards waste-to-wealth goals our sustainability and circular economy treatment technology, the note added. It showed a signifi cant reduction in The advantages of this technology
“The joint venture aims to capita- under circular economy framework,” goals. By creating value from industrial The project focuses on improving the harmful compounds in Electrochemical in comparison to existing technologies
lise on the rapidly expanding gypsum it said. by-products and diversifying into green techno-economic feasibility of Zero Ozone Oxidation Process (ECOOP)- include segregation of dyebath effl uent
plaster market, driven by a growing construction materials, we are leverag- Liquid Discharge (ZLD) plants by treated samples compared to chlorinated for colour removal which reduces 75%
construction sector, the rising need for Import substitution ing adjacent synergies to unlock new developing an electrochemical-based samples from the CETP. The pilot system load on RO system; reduction in capi-
aff ordable housing and demand for eco- Coromandel noted that the initi- growth avenues,” said Mr. S. Sankara- methodology. has successfully achieved 96% colour tal infrastructure cost for RO and reject
friendly, durable building materials,” a ative would complement the Govern- subramanian, Managing Director and removal and 60 percent COD removal evaporators and hence lower carbon
Coromandel Chemicals statement said. ment’s push towards import substi- CEO of Coromandel International Ltd. To mitigate the environmental im- for dyebath effl uent. footprint and chlorine-free colour
pacts, textile industries in India are removal process which avoids formation
Tata Chemicals’s Mambattu unit gets EHS mandated to implement ZLD systems, the initial deployment, the research the note informed.
Based on the results obtained from of carcinogenic chlorinated compounds,
which aim to recover and reuse waste-
recognition water and salts. However, the conven- Balmer Lawrie reports higher net profi ts in Q4
tional ZLD process is associated with
Tata Chemicals Ltd.’s Mambattu high capital and operating costs, signi- and FY2024-25
unit in Andhra Pradesh has bagged fi cant energy consumption, and a large Balmer Lawrie & Co. Ltd., a Rs. 81.53-crore. The net income for full
the ‘Bronze Award’ at the 17th carbon and area footprint. Miniratna I diversifi ed PSE under the FY2024-25 was Rs. 2,577.63-crores regis-
Edition of the CII-South Region EHS oil ministry, has announced results for tering a growth of 7.22% on the levels
(Environment, Health & Safety) The technology development was the quarter and year ended 31st March achieved in FY2023-24. The net profi t
Excellence Awards 2024. The company undertaken through comprehensive 2025. The total income for the fourth increased by 14.41% to Rs. 232.80-crore.
said the recognition from the Confede- lab-scale studies using synthetic waste- quarter of FY2024-25 increased by
ration of Indian Industry (CII) high- water ranging from small volumes of 5.55% and stood at Rs. 650.92-crore The Board of Directors has recom-
lighted its “steadfast commitment to 500-ml to larger volumes of 50 litres as compared to Rs. 616.71-crores in mended a dividend of 85% for FY
workplace safety and environmental for the electrochemical ozone oxidation the same period last year. The net profi t 2024-25, same as the dividend paid for
stewardship”. system for the removal of organic dyes. for the fourth quarter was reported at FY 2023-24.

130 Chemical Weekly May 27, 2025 Chemical Weekly May 27, 2025 131

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