This website uses cookies to ensure you have the best experience. Learn more

Study Of Biosorbent Ability Of Pectin And Modified Pectin From Peel Off Papaya In Removal Of Heavy Metals In Drinking Water

941 words - 4 pages

1.1 Background
Nowadays, industrial activity growth and increasing water usage worldwide have led to the release of various pollutants such as toxic heavy metals into aquatic environment. Industrial activity also can cause to heavy contamination in surface water, groundwater, or the sea, in which they enter into the food chain that causing the toxic effects. Heavy metals ion such as copper, cadmium, lead, nickel and chromium are often found in industrial wastewater. Heavy metals are really dangerous because they can go through a process of bioaccumulation. They have the potential to ts accumulate within sensitive organs and tissues (Wong et al., 2009). Therefore, it is important to remove ...view middle of the document...

36-2.10% (Normah O. and Ku Hasnah K.A., 2000). Although pectin are commonly occurs in most of the plant tissues, the number of sources that may be used is limited. According to Pranati S. and Rishabha M., it is because the potential of pectin to form gel depends on the molecular size and degree of esterification (DE). Pectin is a structural heteropolysaccharide contained in the primary cell walls of plants. The percentage yields from the ripe papaya peel are 0.6%. Another example of fruits that contain pectin is from citrus peel, mango waste, apple and etc.

1.2 Problem Statement
The source of heavy metals is from the industrial processes such as plastics, pigments and mining, metal finishing, which will be harmful to the environment and human lives. Unlike organic wastes, heavy metals are non-biodegradable and they can be accumulated in living tissues, which will cause various disease and disorders (W.S et al., 2007). Therefore, it is important to remove these toxic heavy metals from wastewater. There are various methods that can be used to remove these heavy metals. One of the alternatives is by using biosorption process. This method is strongly recommended due to their local availability, technical feasibility, engineering applicability and cost effectiveness. An adsorbent can be classified as low-cost if it is abundant in environment which is only requires a little processing and is a by-product of waste material from the waste of industry. The most adsorption studies have been focused on untreated plant wastes because it considered as inexpensive as they have no or very low economic value. It is also eco-friendly to our nature. However, it is also can bring several problems such as biological chemical demand (BOD), high chemical oxygen demand (COD) and also as total organic carbon (TOC) due...

Find Another Essay On study of biosorbent ability of pectin and modified pectin from peel off papaya in removal of heavy metals in drinking water

The effect of one of the heavy metals (Arsenic) in Bangladesh

756 words - 3 pages residents in Bangladesh. Deaths caused by such waterborne illnesses dropped immediately at that time. Today, the solution which was thought to have allowed people a mean of safe drinking water has backfired with high arsenic level water being produced. Hence, those who live by the Bengal Delta region will most likely suffer from skin disorders which can eventually lead to cancer of the skin, bladder, kidneys, and lungs if no immediate treatment is

Phytoremediation of heavy metals: a review

695 words - 3 pages -ecological effects resembling that of heavy metals it is considered to fall under the heavy metal group (Agarwal, 2009). Heavy metals are considered to be one of the major sources of soil (Huang and Shindo, 2000) and water contamination (Laws, 2000). All soils and water contain various heavy metals that vary in concentrations. Metals, such as Fe, Mn, Cu, Zn, and Ni are essential micronutrients for many living organisms (Cempel and Nikel, 2006 and

Heavy Metal Removal in a Constructed Wetland and Benefits for the Development of the Toad Bufo Raddei

3050 words - 13 pages contaminated wastewater, and that the RRs are different for different metals. Moreover, it could be seen from the present results that the removal efficiency of CW on HMs would be differernt due to the status of the water pollution in the YR as well as the growth cycle of the cattails. That is, during stages III-V, the removal efficiency was relatively lower than stages I-II, this was attributed to the relative slowly growth of the cattailss which would

Heavy metal removal in a constructed wetland and benefits for the development of the toad Bufo raddei

969 words - 4 pages pollution in the water and soil in the area. 2.2 Wetland design The CW was 18 m × 15 m, and 1 m deep, and contained 20 cm of homogenous soil planted with cattails Typha angustifolia, a widespread species in BY, in March. The cattails were transplanted into the CW from local river bank, with the density of 80-90 plant/m2. The water depth in the CW was 0.5 m and the hydraulic retention time was 3 d. The substrate soil used in the CW is gray calcareous

Predictive modeling of As(III) and Cr(VI) removal from water by ZEDA Hybrid Material

2477 words - 10 pages . Taifur, Hao, K.W., Hidajat, K., Uddin, M. S., 2013. Ionically modified magnetic nanomaterials for arsenic and chromium removal from water, Chemical Engineering Journal 225 (1), 607-615. Tang, W., Peng, Z., Li, L., Yue T., Wang, J., Li Z., Li, R., Chen, J., Colvin, V. L., Yu, W. W., 2012. Porous stainless steel supported magnetite crystalline membranes for hexavalent chromium removal from aqueous solutions, Journal of Membrane Science 392–393, 150-156

Global Issues In The Environment And Extraction Of Metals

3684 words - 15 pages shuttles taking off damages ozone.Is the damage reversible?The damage done to the ozone layer is reversible but it will take a lot of effort and international cooperation to repair it. It is expected that ozone levels will return to normal by 2045.Discuss the different methods used to extract metals from their ores and the advantages and disadvantages of each methodThere are three basic ways of extracting metals from their ores. Pyrometallurgy

Treatment of drinking water and the processes used in the Illawarra region. HSC year 12 syllabus

4808 words - 19 pages water increase the concentration of many ions, especially phosphate and nitrate. BOD and pathogens can increase by 200 ppm or more. Stormwater and run-off can have a similar affect in concentration of ions. Industrial effluents, if not carefully monitored and controlled can discharge heavy metal ions into bodies of water.Leaching from rubbish dumpsRubbish tips can seep waste through poorly designed apparatuses, rain and stormwater dissolve the

Safety of Public Drinking Water

2273 words - 9 pages filtered out of the water to meet the limit set by the EPA. A fluoridation level for public drinking water is not to exceed 4 ppm.Arsenic occurs in nature and can become an element found in water naturally however it can also be caused by industrial waste. "The waste from mining operations is especially likely to introduce previously contained arsenic to a water supply." (Text page 32) As is the case with most metals and minerals found in drinking water

Pollution of Drinking Water Supplies

878 words - 4 pages largely unknown. Water pollution comes from a number of unique sources, such as industrial waste, urban storm-water, agricultural runoff, various household chemicals and even nuclear waste. Combining these points of pollution with the increase in global population results in a continuously decreasing amount of clean drinking water for plant and animal life on Earth and an increasing amount of polluted water. The many sources of pollution

The Removal of Books from Schools and Dress Codes

680 words - 3 pages author, might put witch craft in the book and if somebody doesn’t agree with that they want to censor the book. The most challenged book series is Harry Potter. School libraries in Cedarville, Arkansas banned open displays of the book Harry Potter. The schools also made students have a written permission from parents for the students to read the books. In New Mexico, a pastor and his wife and their congregants burned harry potter books because they

Study the rise of Swiss heavy infantry. Describe the arms, armor and tactical formation of the Swiss heavy infantryman

695 words - 3 pages Study the rise of Swiss heavy infantry. Describe the arms, armor and tactical formation of the Swiss heavy infantryman. How is the Swiss heavy infantry different from earlier medieval heavy infantry?For the most part, Western Europe was dominated by cavalry heavy armies, an attribute to the feudalization that spawned from France; however, it was in the un-feudalized sections of Europe that infantry dominated. Nowhere was this more prevalent in

Similar Essays

Banana Peel Lead Adsorption And The Removal Of Heavy Metals

640 words - 3 pages 4.2 Discussion 4.2.1 Effects of Initial dosage on Lead Adsorption This experiments were carried out to investigate the potential of banana peel as adsorbent for the removal of heavy metal. For this experiment, the bisorbent is untreated and less remove of heavy metal than treated biosorbent. As can be seen from the result, at mass of 0.4g, the percent of removal was 37.38% and it gradually increase to 49.30% at 2.4g.From the result, it can be

Removal Of Heavy Metals From Contaminated Soils

1573 words - 6 pages in mine waste piles and tailings, and may cause severe soil contamination through spillage. The recent incident at the Talvivaara mining site in Sotkamo, Finland, is an example where a major tailings dam leakage has caused severe soil contamination by releasing waste water with high nickel and zinc concentration into the nearby area. The main focus of this report is the removal of heavy metal contaminants from soil. These include essential

Removal Of Inorganic Anions From Drinking Water Supplies By Membrane

1677 words - 7 pages inorganic anion pollutants in batch and columns study, while little is known about the simultaneous removal of inorganic anion and cationic compounds from actual waster. Disadvantage of adsorption techniques is once the adsorbents have been saturated by inorganic pollutants. These adsorbents need to dispose of by earth fill or combustion, or regeneration. The combustion and earth filled method to dispose exhausted adsorbents is not in line with

Phytoremediation Of Heavy Metals Iaden Waste Water Using Duckweed Species

2424 words - 10 pages analysing treated water and duckweed plants for its related growth, bioaccumulation factor and heavy metal removal efficiency. Scope and Relevance of Study Water contamination caused by heavy metals is a major problem worldwide. Both wastewater and un-sufficiently treated industrial water contribute continuously to degrade the environment.In contrast to organic contaminants, heavy metals persist and are likely to accumulate in the environment