Nature Environment and Pollution Technology

P. E. Kumar ¹, V. Perumal ¹

Affiliations
1 Department of Chemistry, Erode Arts and Science College, Erode-638 009, T.N., IN

Abstract

Batch adsorption method was performed using a low cost acid activated novel adsorbent, inflorescence of palmyra male flowers carbon (IPMFC), for the removal of Congo red (CR) from aqueous solutions at 30±2°C. The effects of agitation time, adsorbent dose, initial dye concentration, pH and temperature were examined. The adsorption capacity was found to be 4.7037 mg/g of the adsorbent for the particle size of 0.15-0.25 mm. Acidic pH was favourable for the adsorption of Congo red. Equilibrium adsorption data were described by both Langmuir and Freundlich models, but Langmuir model was more fitted. Increase in temperature increased the percent removal of CR ions onto IPMFC and it was endothermic in nature.

Keywords

Cong Red Dye Adsorption, Low-Cost Adsorbent, Borassus flabellifer L., Adsorption Isotherms.

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M. Kumaresan ¹, P. N. Palanisamy ², P. E. Kumar ³

Affiliations
1 Department of Chemistry, M. P. Nachimuthu M. Jaganathan Engineering College, Chennimalai, Erode-638 112, T.N., IN
2 Department of Chemistry, Kongu Engineering College, Perundurai, Erode, T.N., IN
3 Erode Arts and Science College (Autonomous), Erode, T.N., IN

Abstract

The colour fastness properties of the stem of Achras sapota dyed on cotton were studied using combination of mordants such as myrobolan :nickel sulphate, myrobolan : aluminium sulphate, myrobolan : potassium dichromate, myrobolan : ferrous sulphate, and myrobolan : stannous chloride in the ratio of 1:3, 1:1 and 3:1. The washing, rubbing, light and perspiration fastness of the dyed samples were evaluated giving fair to excellent fastness grades.

Keywords

Ecofriendly Natural Dye, Achras sapota, Mordants.

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A. R. K. Kulandaivel ¹, P. E. Kumar ¹, V. Perumal ¹, P. N. Magudeswaran ²

Affiliations
1 Deptt. of Chemistry, Erode Arts College (Autonomous), Erode-638 009, T.N., IN
2 Department of Chemistry, V. L. B. Janakiammal College of Engineering and Technology, Coimbatore-641 042, T.N., IN

Abstract

Bhavani is one of the important rivers in Tamil Nadu. Many industries, particularly textile processing units, tanneries, sugar factories and distillery units, are situated on the banks of Bhavani river. These industries let out untreated and partially treated effluents into the river stream. It is, therefore, decided to study the quality of water and to estimate its pollutional load in the River Bhavani. Samples of water were collected at selected points and physcio-chemical and biological examinations were carried out. A simple, comprehensive water quality index system, devised by NSF of USA and an alternative method adopted, were applied and the water quality assessed at every point. It was observed that at the start of monsoon season the water quality in the Bhavani river was good, but showed a progressive decline from its origin to further distances as it passes through human settlements and industrial areas.

Keywords

Water Quality Index, River Bhavani, Faecal Coliforms, Organic Pollution.

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A. R. K. Kulandaivel ¹, P. E. Kumar ¹, V. Perumal ¹, P. N. Magudeswaran ²

Affiliations
1 Department of Chemistry, Erode Arts College (Autonomous), Erode-638 009, T.N., IN
2 Department of Chemistry, V.L.B. Janakiammal College of Engineering and Technology, Coimbatore-641 042, T.N., IN

Abstract

An attempt has been made to study the physico-chemical characteristics and biological investigations of Cauvery river at Erode region. The sampling points were selected on the basis of their importance. Industrial wastewater, dyeing effluents and sewage are allowed to mix with the Cauvery river water in this region. Water Quality Index (WQI) has been calculated based on National Sanitation Foundation (NSF) index system. Water Quality Index is an easy tool to assess the quality of surface waters and to control the pollutional load of water bodies.

Keywords

Cauvery River, Water Quality Index, Pollutional Load, Feacal Coliforms.

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