Evaluation of Drinking water quality parameters in the areas of East-Lahore Pakistan: A case study

Abstract This study aims to evaluate the quality of water being supplied for drinking purposes to the residents of East Lahore. For this purpose six sampling locations were selected which included four sampling points from urban areas and two from the rural areas. Samples from the urban areas were collected from the source of supply (tube well), its respective filter plant and three house connections. For the assessment of water quality of the rural areas, samples were taken from three house connections of each sampling point. All these samples were tested for physical (turbidity and pH), chemical (hardness, total dissolved solids, sulfates, chlorides) and biological parameters (total coliform and fecal coliform). The results were compared with National Standards for Drinking Water Quality (NSDWQ). The results demonstrated that bacteriological parameters provide almost satisfactory status. However, minor issue of hardness and turbidity were found. At consumer end, 65% of the samples were found, bacteriologically contaminated; hence compulsory chlorination is recommended. Currently in these areas, people are using bores having maximum depth of 150 feet which causes physiochemical contamination

Removal of Methylene Blue from Aqueous Solutions by using Rice Husk Ash and Peanut Shell Ash

Abstract The objectives of this work were to compare the process of adsorption of Methylene blue (MB) with two types of adsorbents. Rice husk ash (RHA) and Peanut Shell ash (PSA) have been used to study the adsorption of MB. To the best of our knowledge this is the first report to use PSA as adsorbent for MB removal.The effect of different parameters such as initial pH, contact time, adsorbent dose, dye concentration were studied. The adsorption % efficiencies of Methylene Blue on RHA and PSA were 84.5 % and 83.5 % respectively (in 120 minutes on 0.2 g adsorbent). The results further revealed that adsorption of MB on PSA and RHA occur by both physisorption and chemisorptions processes. The comparative studies revealed that both the adsorbents have similar removal efficiencies in 120 minutes. However, RHA has faster rate of adsorption as compared with PSA. Therefore, it is concluded that both the RHA and PSA are good adsorbents for the removal of MB in water