College of Human Ecology faculty and student efforts to advance sustainable approaches to textile and fashion design has led to the development of the Cornell Natural Dye Garden after a successful crowdfunding campaign that ended in fall 2016.
The project raised $10,365 for the development and cultivation of a dye garden, which will produce a variety of colors that come from the natural world and have a lower environmental impact.
“We know that synthetic dyes cause incredible environmental harm and pollute waterways. Human health is also impacted, particularly for laborers in the textile dyeing industries,” said Denise Green, assistant professor of fiber science and apparel design.
According to organizers, up to 200,000 tons of synthetic dyes are discharged into waterways around the globe every year, making textile dye plants the second-largest polluter of water after agriculture.
In many developing nations where textiles are produced, workers may not be properly protected from the toxic chemicals used to dye fibers and fabrics, making synthetic dyes hazardous to environmental and human health, Green said.
In contrast, natural dyes, some of which come from weeds, are nontoxic. Some of these dye plants have the ability to grow aggressively without herbicides or fungicides.
“We believe natural dyes are an opportunity to make a sustainable intervention in the apparel supply chain,” Green said.
In May 2015, Green, in collaboration with fellow fiber science and apparel design faculty and students, as well as Human Ecology Facilities Services and Cornell Botanic Gardens staff, planted a test garden of natural dye plants at the northeast corner of the Human Ecology Building overlooking Beebe Lake.
“That success led us to the idea to put the garden in a place that’s more accessible for students and more visible in terms of our college life,” Green said.
In spring 2016, Green and her students moved the garden to a plot located in the courtyard between Martha Van Rensselaer Hall and the Human Ecology Building. The relocation of the garden, according to Green, allows students and faculty to grow a wider array of dye plants to be used in teaching and research.
“The new location is highly visible,” Green said, adding that plans are in place to add educational signage for the 2017 growing season.
“Signage means that the garden won’t just be beautiful to look at, and valuable as a natural dye resource, but it will also be an opportunity to educate students, staff and the public about the plants we are growing and the range of colors they yield,” she said.
Beyond working on projects, Green hopes the garden will have deep and long-lasting impacts on fiber science and apparel design students who begin careers in the manufacturing and fashion industries.
“Our hope is they become conscientious citizens of the world who think about the impact that their design will have on the environment, on human health and on many people, which we don’t often think about when we consume fashion,” Green said.
*This story first appeared on Cornell News
In a bid to check the water quality, the State Pollution Control Board (SPCB) has enhanced its monitoring locations from the earlier 104 sites across the state to 131.The move has been initiated as per the National Water Monitoring Programme undertaken by the Central Pollution Control Board (CPCB) which has notified sampling and analysis procedures for these sites.The board is supposed to undertake the monthly monitoring of water quality with effect from March. Information will be duly uploaded on the board’s site. The CPCB is directly monitoring the water and air quality undertaken by the state board at these sites.
Out of the 27 new sites, three pertain to the Nalagarh industrial area on the Chikni river where the presence of textile units has become a cause of concern for the board. Two other sites at the Giri river and Surajmukhi Nullah in Solan will also be monitored henceforth. Four sites in Una district, including the one upstream of the Swan river, will be monitored. Barely one site in Kangra district on the Beas has been included in the new arrangement while maximum of six sites in Sirmaur district, including the Giri river, Salani Nullah, two sites along the Markanda river, Rampur Jattan Moginand Nullah and Roon Nullah. Besides, three sites in Kullu, three in Kinnaur and two in Chamba have been included for water monitoring.
With no staff enhancement in the four laboratories of the board which were operating at Parwanoo, Jasur, Sundernagar and Paonta Sahib, the staff will face an added challenge of analysing water samples from 31 new locations.Despite the Central Pollution Control Board having directed the SPCB to upgrade its Parwanoo lab as per the specifications of the National Accreditation Board of Calibration and Testing of Laboratories (NABL) within 90 days in October 2015, it is yet to meet these standards. The board is yet to enhance its staff and upgrade its equipment as per the NABL norms.
Member Secretary, SPCB, Sanjay Sood, said they would soon appoint more staff as certain posts were vacant and the process to procure requisite equipment was also under way.He said the process of meeting NABL specifications for the Parwanoo lab was in progress and would be completed in the coming months. Sood said in addition to the 131 Centrally-monitored sites for water pollution, there were 157 state-monitored sites too where they were keeping a check on the quality of surface water.
*This story first appeared on The Tribune India
Textile units in Pali city continue to release polluted water into the Bandi river, violating a National Green Tribunal (NGT) order staying their operation.
On October 3 last year, the NGT stayed the operation of about 800 textile units after environmentalists moved the tribunal over pollution of the Bandi river.
The water resources department recently exposed secret operation of some units. In a letter to the regional officer of the Rajasthan Pollution Control Board on March 17, executive engineer Ramnarayan Chaudhary said some textile units in Pali were releasing polluted water into the Bandi, a seasonal river of western Rajasthan.
The river water is stored in Nehda dam, about 40km from Pali city. Choudhary said, “Chemical water is reaching the Nehda dam through Bandi river.”
The dam remains filled to its full capacity though water stored during the rainy season was released for irrigation. “This makes it clear that water released from textile units in Pali is reaching the dam,” Choudhary said.
The water resources department tested the water quality. “The water in the dam is of no use for consumption and irrigation as its quality has deteriorated,” the executive engineer said. “Closure of textile units is just an eyewash.”
The quality test reports are stunning, said Mahaveer Singh Sukarlai, an environmentalist who went to the NGT over Bandi river pollution.
“The TDS (total dissolved solids) of the water stored in the dam after the rain was recorded at 560 PPM (parts per million); it has now risen to 2950. The electrical conductivity of the water has increased to 6.3 from 1.7,” Sukarlai said.
Around 200 million cubic feet of water has been polluted though the state government focuses on Mukhya Mantri Jal Swavlamban Abhiyan, environmentalists said.
Rajeev Pareek, regional officer of the Rajasthan Pollution Control Board, said a team has been formed to keep an eye on the operation of textile units.
“Electric and water supply to eight textile units, found violating the NGT order, was snapped. Twelve more such units would be deprived of water and electric connections,” Pareek said.
“Supply of three-phase electricity to the industrial area will be stopped soon so that the textile units cannot operate secretly.”
*This story first appeared on Hindustan Times
Textile dyeing accounts for one fifth of all industrial wastewater pollution generated worldwide and much of it, particularly in developing countries in Asia, goes untreated. Now, China is employing electron beams to treat effluent from textile dyeing plants, ushering in a new era for radiation technology.
“Despite advances in conventional wastewater treatment technology in recent years, radiation remains the only technology that can treat the most stubborn colorants in wastewater,” said Suni Sabharwal, Radiation Processing Specialist at the International Atomic Energy Agency (IAEA). “The problem is that the technology exists in developed countries, while most of the need now is in the developing world.”
To bridge the knowledge gap, the IAEA ran a coordinated research project on the technology, including its transfer to several countries, mostly in Asia. Chinese researchers, for example, have benefited from the advice of experts from Hungary, Korea and Poland in the adoption of the technology and the construction of the plant, said Jianlong Wang, Deputy Director of the Nuclear and Energy Technology Institute at Tsinghua University in Beijing and the principal researcher behind the project.
The new plant in Jinhua city, 300 kilometers south of Shanghai, will treat 1500 cubic meters of wastewater per day, around a sixth of the plant’s output. “If everything goes smoothly, we will be able to roll out technology to the rest of the plant and eventually to other plants across the country,” Wang said.
Before opting for radiation technology using electronic beams, Chinese researchers had run an extensive set of feasibility experiments using the effluent from the plant, comparing electron beam technology with other methods. “Electron beam technology was the clear winner as both the more ecological and more effective option,” Wang added.
Other countries with large textile manufacturing industries, such as India, Bangladesh and Sri Lanka, are also considering introducing the technology with the assistance of the IAEA. India is already using gamma irradiation to treat municipal sewage sludge.
In standard wastewater treatment, bacteria are used to digest and breakdown pollutants. However, the molecules in textile effluent cannot be treated with bacteria. To color textiles, compounds with large, long and complex chains are used. Wastewater from the industry can contain more than 70 complex chemicals that do not easily degrade.
By irradiating the effluent using electron beams, scientists can break these complex chemicals into smaller molecules, which, in turn, can be treated and removed using normal biological processes. Irradiation is done using short-lived reactive radicals than can interact with a wide range of pollutants and break them down.
Chinese researchers are also considering the use of electron beam technology to treat residues from pharmaceutical plants that produce antibiotics. These residues are currently handled as hazardous waste because they contain antibiotics and antibiotic resistance genes that cannot be destroyed using conventional technologies, such as composting or oxidation. Research has revealed that electron beam technology can effectively decompose the residual antibiotics and antibiotic resistance genes, Wang explained. The establishment of a demonstration plant at an industrial scale is planned for later this year.
*This story first appeared on Sustainable Brands