Potential Risk Related To The Reuse of Faecal Sludge In Agriculture: Proposal For An Ecological Treatment Method Based On Active Charcoal

This study is aimed at highlighting the risks associated with the reuse of faecal sludge and proposed a sustainable treatment method. The sampling consisted of collecting samples of faecal sludge in 5L of sterilized containers and then transporting to the laboratory in a refrigerated chamber for the determination of helminth eggs using standard protocols. The experimental device consisted of two replicates, one test and one control. The test samples received active charcoal at different concentrations (C1, C2, C3, C4, C5, C6). The physico-chemical parameters were measured before and after treatment. The samples were then observed under the optical microscope at the 40X objective for morphological identifications. Molecular analysis was carried out using the Polymerase Chain Reaction technique. The viability of the eggs were determined using incubation and staining techniques. Analyses showed that the sludge used for irrigation contained eggs and larvae of 6 helminth species (S. stercoralis, A. duodenale, N. americanus, T. trichiuria, H. nana and Ascaris spp.) with viability percentages ranging from 57.72% to 74.46%. Treatment with active charcoal allowed significant adsorption of these parasites with yields ranging from 95 to 100%. In addition, the carbon used has favoured the alkaline stabilisation of the medium, which increases its absorption potential. It can therefore be used in the treatment of sludge because, unlike other chemical disinfectants, it does not present any toxic effects.

ACTIVE CHARCOAL FROM WASTE OF AVOCADO SEEDS AS A CHROMIC (CR) METAL ADSORBENT USING CHLORIDE ACID (HCL) AND SULFURIC ACID (H2SO4) ACTIVATOR

Avocado seeds are one of the wastes generated from restaurants that serve avocado juice. This avocado seed waste can be used as activated charcoal by carbonization at high temperatures and chemical activation using HCl and H2SO4 activators. The results showed that the optimum concentration of HCl and H2SO4 activator was 5%, which at a concentration of 5% produced the smallest water content values, namely 0.5825% and 0.6763%, the lowest ash content was 0.2993% and 0.2296%, while the adsorption to iodine amounted to 252.2419 mg / g and 279.8959 mg / g. The charcoal from avocado seeds has the potential to absorb chromium metal, which at optimum conditions can absorb 0.1673 mg / L and 0.1535 mg / L.

The effect of active charcoal filter on viability of bacteria isolated from the tap water in Sarajevo

Clean water is essential to our existence and problems might arise when it becomes contaminated with different pathogens, which might pose a threat to human health. Tap water is generally considered drinkable since it passes different forms of disinfection during processing. Some households have additional disinfection procedures, the most common one being the usage of charcoal filters, in order to further clean the tap water from both undesirable solvents and microorganisms. In the first independent study of this kind, we have tested tap water for bacteria from five different locations in Sarajevo, and we have tested the efficiency of charcoal filter in trapping of bacteria. According to regulations in Bosnia and Herzegovina, there should be 1 colony forming unit (CFU) per 50ul of water sample, which was satisfied in only one location from Sarajevo, while one had significantly higher levels (6.7, p val. 0.0148). Overall, the charcoal filter has decreased the number of bacteria in the water, with the exception of one sample.

ADSORPTION OF Zn AND Pb METAL IN PRINTING WASTE OF PT. GRAFIKA WANGI KALIMANTAN USING CORN COBS CHARCOAL AS ADSORBENT

Heavy metals produced from several industrial processes cause many environmental problems. Efforts made to overcome this heavy metal pollution include adsorption methods. Agricultural by-products have the potential as an adsorbent, one of which is corn cobs. In this study, corncobs were used as Pb and Zn adsorbents. The purpose of this study was to determine the effect of particle size and stirring speed in the process of Zn and Pb metal absorption using activated charcoal. Adsorption was done by mixing 100 mL waste of PT. Grafika Wangi Kalimantan with 10 grams of activated charcoal measuring 355 micron, 500 micron and 710 micron. Each mixture is stirred for 15 minutes at speeds of 30, 60, 90, and 120 rpm and then allowed to stand for 3 hours. Analysis of the absorbed Zn and Pb metal content was carried out using a spectrophotometer at adjusted wavelengths. The greater the stirring speed, and the small size of the active charcoal particle used, decrease of Zn and Pb levels is increasing due to the better absorption of adsorbate by the adsorbent. The biggest decrease in Zn and Pb levels was seen at a stirring speed of 90 rpm and the active charcoal particle size of 355 microns where the Zn and Pb parameters contained in the sample were <0.01 mg / L.

Penggunaan Arang Aktif Berbahan Dasar Limbah Biomassa Pada Proses Filtrasi Air Groundtank Ditinjau dari Uji TDS, Uji Kejernihan dan Uji Fe

Natural resources on Earth consist of abiotics and biotics. Water, including biotic natural resources is one of the most important elements in supporting the survival of human life. One of water source which was widely used by resident around the Yogyakarta State University was the water of Institute of Development and Quality of Education Assurance (Lembaga Pengembang dan Penjamin Mutu Pendidikan) of Yogyakarta State University. This water resource was used to fulfill the needs of employees, the institute visitors, and traders around Karangmalang Culinary Park. However, the prior observation showed that the color of the water was prone to muddy and contains many sediments substances. This research was aimed to filter the water of that institute into pure water according to the physics parameter. This research was conducted by utilizing biomass waste in the form of teak, husk, and coconut fiber to be processed into active charcoal which later used to filter the water. Additional materials used in this research were sand and gravel. The result of water’s total dissolve solid (TDS) has decreased by using the three active charcoal of biomass waste. Among those activated charcoal, the carbon which formed by teak showed the most significant result. Furthermore, in Fe content test, the most significant result of decreasing Fe content was showed by activated charcoal from husk base material. It can be concluded that the most effective activated charcoal material was formed by teak biomass waste which has a large pore structure.

UTILIZATION OF PALM OIL SHELL WASTE AS ALTERNATIVE ADDITIVES IN MANUFACTURING PAVING BLOCK

Palm shells are one of the wastes produced from the processing of crude palm oil in addition to empty fruit bunches and coir which account for 60% of oil production. Palm oil shell waste is widely used as active charcoal in the oil, rubber, sugar, and pharmaceutical industries. The potential of palm oil shell waste in Indonesia is very large considering the area of oil palm plantations which continues to increase every year. This study aims to determine the percentage of the addition of palm oil shell waste in the manufacture of paving blocks that provide optimum compressive strength and water absorption values from several variations of the addition of palm oil shell waste that replaces some of the fine aggregates. The study was carried out experimentally in a laboratory using a boxed specimen with a length of 20 cm, a width of 10 cm, a height of 6 cm by 40 pieces. The mixture uses a ratio of 1 cement and 5 sand with fas 0.3. Treatment of test specimens by immersion in water for further testing of compressive strength and absorption at the age of 28 days. Based on testing of the compressive strength of paving blocks with a percentage of 0%, 5%, 10%, 15% are respectively 8.08 MPa, 7.18 MPa, 6.46 MPa, 5.94 MPa. The value of paving block water absorption with a percentage of 0%, 5%, 10%, 15% are respectively 9.88%, 10.25%, 12.27%, 12.44%.

KARAKTERISTIK ARANG AKTIF AKASIA (ACACIA MANGIUM WILLD) YANG DIAPLIKASIKAN SEBAGAI BAHAN UNTUK MENINGKATKAN KUALITAS AIR

The production volume or amount of Acacia wood used is generally low compared to thevolume of wood harvested. Not a few woods that are cut cause wood harvesting wastesuch as branches and twigs. One of the uses is processing the waste into activatedcharcoal. Activated charcoal is charcoal whose cavities or pores are cleaned from othercompounds so that the adsorption power of liquids and gases increases. This researchuses the Acacia wood of the stem, branches and twigs which is first through thecarbonization process and then used as activated charcoal. The active charcoal testsinclude yield, moisture content, volatile matter content, ash content, carbon boundcontent, absorption of benzene, absorption of iodine and absorption of methylene blue.Acacia quality test results of the stem, branches and twigs show that the activatedcharcoal of the stem has better quality than the active charcoal of branches and twigs.Overall the results of testing the quality of activated charcoal not all treatments meet therequirements of SNI 06-3730-1995, but when compared with the requirements of thequality of pharmaceutical chemistry, all tests for each treatment meet the qualitystandard requirements. The application of activated charcoal to drilled well water doesnot all improve water quality but still qualifies the drinking water quality standardsMinister of Health Regulation No: 416/Menkes/Per/IX /1990.Keywords: Active Charcoal, Acacia, Trunk, Branches, Branches, Drilling Well Water