PEMANFAATAN ABU PEMBAKARAN LIMBAH PADAT INDUSTRI CHLOR ALKALI SEBAGAI ADSORBEN PADA PENGOLAHAN LIMBAH CAIRNYA

2008 ◽  
pp. 19-25
Author(s):  
Sumingkrat Sumingkrat ◽  
Hartini Hartini ◽  
Adrian Yusuf
Keyword(s):  
Solid Waste ◽  
Pure Water

Lim bah industri klor alkali termasuk limbah 83 dari sumber yang spesifik. Pembakaran lirnbah padat industri kimia terpadu, yang memproduksi kaustik soda, VCM dan PVC akan menghasilkan abu. Limbah cair media proses polimerisasi PVC setelah pengendapan disebut spent pure water (SPW). Abu sisa pernbakaran, Solid Waste /ncenerator (SWI) ini dapat dimanfaatkan sebagai adsorben  untuk SPW. Sesuai dengan model Freundlich isoterm, SW! mempunyai daya adsorpsi terhadap biru metilen lebih baik dari pada karbon aktif, dan mampu menurunkan turbiditas SPW sampai sekitar 95%.

scholarly journals Dechlorination of Municipal Solid Waste Incineration Fly Ash by Leaching with Fermentation Liquid of Food Waste

2020 ◽  
Vol 12 (11) ◽  
pp. 4389
Author(s):  
Dezhi Zou ◽  
Xiaona Wang ◽  
Chuanfu Wu ◽  
Teng Li ◽  
Menglu Wang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Fly Ash ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Food Waste ◽  
Pure Water ◽  
Waste Incineration ◽  
Cement Kiln ◽  
Municipal Solid Waste Incineration ◽  
Fermentation Liquid

Cement kiln collaborative disposal of municipal solid waste incineration (MSWI) fly ash (referred to as fly ash) can achieve harmless recycling of fly ash. However, because of high chlorine (Cl) content in fly ash, the practical application of this technology is seriously restricted. In order to find a suitable leaching solvent for dechlorination of fly ash, this study compared the effect of lactic acid fermentation liquid (FL) and sludge FL of food waste on dechlorination. Results show that 90% of water-insoluble Cl in fly ash can be removed by a three-step leaching process with lactic acid FL and sludge FL, and the Cl content in leached fly ash residue is 0.44% and 0.39%, respectively. According to calculation, permissible fraction of the residue after three-step leaching with addition of lactic acid FL and sludge FL in kiln is 4.28% and 4.99% higher than that of the residue after three-step leaching with pure water, respectively. Furthermore, the properties of leaching solvents after leaching experiments indicate that organic acids with low pH value and high concentration are more conducive for removal of water-insoluble Cl. Therefore, it is feasible to use two kinds of FL as leaching solvent for fly ash dechlorination.

Study on UV–Visible Spectra Characteristic of Dissolved Organic Matter during Municipal Solid Waste Composting

2014 ◽  
Vol 878 ◽  
pp. 840-849 ◽  
Author(s):  
Dan Li ◽  
Xiao Song He ◽  
Bei Dou Xi ◽  
Zi Min Wei ◽  
Hong Wei Pan ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Pure Water ◽  
Treatment Plant ◽  
Composting Process ◽  
Humus Substances ◽  
Absorbance Ratio ◽  
Uv Visible

This paper aims to characterize the evolution of organic matter during the composting of municipal solid waste (MSW). During the 46-day composting process, six samples with different composting time were collected from Songjiang Solid Waste Biological Treatment Plant in Shanghai, China. Dissolved organic matter (DOM) was extracted by ultra-pure water, and the UV-Visible (UV-Vis) spectra of DOM were scanned and investigated. The results showed that, during the composting process, non-humus substances in DOM were gradually transformed into humus substances, the aromatization, molecular weight and humification of humus substances increased. Correlation analysis showed that the absorbance value at 280 nm (SUVA280), and the area of 226~400 nm (A226~400) correlated positively with each other. The dissolved organic carbon (DOC) concentration exhibited a negative correlation with the parameters S275~295, SUVA280 and A200~226, and the correlation coefficients between the DOC content and the A220~226 value was the best (r= -0.976, P=0.001). The absorbance ratio bewteen 465 and 665 nm (E465/E665) showed a significant correlation with SUVA280 (r=-0.892, P=0.017), A226~400 (r=-0.909, P=0.012) and DOC (r=0.840, P=0.036). The absorbance ratio of 250 to 365 nm (E250/E365) correlated significantly with DOC (r=-0.880, P=0.021), and showed no correlation with the other parameters. Absorption curve slope in the range of 275~295nm (S275~295) showed a significantly positive correlation with the DOC content (r=0.961, P=0.002). Among all parameters, the A200~226, A226~400 and S275~295 values reflected compost maturity best.

scholarly journals Appraisal Of Cottage Industrial Solid Waste Management Practices In Mubi Metropolis, Nigeria.

2015 ◽  
Vol 3 (9) ◽  
pp. 1-7
Author(s):  
Alfred Dika Mshelia
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Management Practices ◽  
Solid Waste Management ◽  
Animal Feed ◽  
Pure Water ◽  
Waste Reuse ◽  
Industrial Solid Waste ◽  
Questionnaire Surveys ◽  
Waste Management Practices

The study examines cottage industrial solid waste management practices in Mubi Metropolis where the generation and management were dominantly the focal points. Collection of data was largely based on reconnaissance and questionnaire surveys. The survey administered a set of questionnaire to 124 cottage firms, where data collected were summarized and presented in form of percentages and tables. Consequently, descriptive and quantitative statistical analysis for valid decision making was employed. Analysis however reveals the major types of cottage firms as grain polishing or husk removal, furniture making, bakery, flour mills, water packaging and brick/block industry, where findings shows waste generated by them being peculiar to what they produce, as saw dust, grain husk, charcoal and ashes pure water bags and brick/block rubbles. Some of the waste generated are reusable and are sold as animal feed or given out to people for free which is dumped on farmland as soil amend. Concerted cottage industrial waste reuse or recycling which partly forms the cornerstones to shrinking the overwhelming urban waste problem in the area is ardently recommended.

Decoration of specific sites on freeze-fractured membranes

1978 ◽  
Vol 36 (2) ◽  
pp. 140-141
Author(s):  
H. Gross ◽  
H. Moor
Keyword(s):  
Pure Water ◽  
Freeze Fracture ◽  
Chemical Properties ◽  
Surface Forces ◽  
Sulfate Pentahydrate ◽  
Copper Sulfate Pentahydrate ◽  
Physico Chemical ◽  
Water Of Hydration ◽  
Small Container ◽  
Binding Forces

Fracturing under ultrahigh vacuum (UHV, p ≤ 10-9 Torr) produces membrane fracture faces devoid of contamination. Such clean surfaces are a prerequisite foe studies of interactions between condensing molecules is possible and surface forces are unequally distributed, the condensate will accumulate at places with high binding forces; crystallites will arise which may be useful a probes for surface sites with specific physico-chemical properties. Specific “decoration” with crystallites can be achieved nby exposing membrane fracture faces to water vopour. A device was developed which enables the production of pure water vapour and the controlled variation of its partial pressure in an UHV freeze-fracture apparatus (Fig.1a). Under vaccum (≤ 10-3 Torr), small container filled with copper-sulfate-pentahydrate is heated with a heating coil, with the temperature controlled by means of a thermocouple. The water of hydration thereby released enters a storage vessel.

A Review : Sustainability from Waste

2019 ◽  
pp. 134-155
Author(s):  
Kriti Jain ◽  
Chirag Shah
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Rural Areas ◽  
Waste To Energy ◽  
Waste Generation ◽  
Material Resources ◽  
Waste Dumps ◽  
Waste Segregation ◽  
Treatment And Disposal ◽  
Engineered Landfill

The increasing volume and complexity of waste associated with the modern economy as due to the ranging population, is posing a serious risk to ecosystems and human health. Every year, an estimated 11.2 billion tonnes of solid waste is collected worldwide and decay of the organic proportion of solid waste is contributing about 5 per cent of global greenhouse gas emissions (UNEP). Poor waste management - ranging from non-existing collection systems to ineffective disposal causes air pollution, water and soil contamination. Open and unsanitary landfills contribute to contamination of drinking water and can cause infection and transmit diseases. The dispersal of debris pollutes ecosystems and dangerous substances from waste or garbage puts a strain on the health of urban dwellers and the environment. India, being second most populated country of the world that too with the lesser land area comparatively, faces major environmental challenges associated with waste generation and inadequate waste collection, transport, treatment and disposal. Population explosion, coupled with improved life style of people, results in increased generation of solid wastes in urban as well as rural areas of the country. The challenges and barriers are significant, but so are the opportunities. A priority is to move from reliance on waste dumps that offer no environmental protection, to waste management systems that retain useful resources within the economy [2]. Waste segregation at source and use of specialized waste processing facilities to separate recyclable materials has a key role. Disposal of residual waste after extraction of material resources needs engineered landfill sites and/or investment in waste-to-energy facilities. This study focusses on the minimization of the waste and gives the brief about the various initiations for proper waste management system. Hence moving towards the alternatives is the way to deal with these basic problems. This paper outlines various advances in the area of waste management. It focuses on current practices related to waste management initiatives taken by India. The purpose of this article put a light on various initiatives in the country and locates the scope for improvement in the management of waste which will also clean up the unemployment.

Pengelolaan Limbah B3 Di Rumah Sakit X Kota Batam

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Salma Savira Siddik ◽  
Eka Wardhani
Keyword(s):  
Health Service ◽  
Solid Waste ◽  
Medical Management ◽  
Secondary Data ◽  
Toxic Waste ◽  
Waste Collection ◽  
Private Hospitals ◽  
Collection Method ◽  
Technical Requirements ◽  
Class B

<p>Hospital X was class b private hospitals that are located in Batam with 297 unit beds. The waste that can be categorized as solid waste medical in the hospital which is infectious, pharmacy, hazardous and toxic waste, cytotoxic, sharp object.  The purpose of this research is to identify, a source of , the characteristics, solid waste medical produced by hospital X in Batam and also conduct an evaluation of solid waste medical management hospital in accordance with the minister of environment and forestry 56 2015 on procedures and technical requirements of hazardous and toxic waste management than health service facilities. This research used primary and secondary data collection method. The research results show solid waste medical management at the hospital X in Batam most of them are in according to rule. But there are some things that must be improved are blinding trash bag, efficiency and minimal temparature the combustion chamber incinerator. Management efforts must to do are briefing to officer of the waste collection about the way to blinding trash bag in according to the regulation and the incinerator that can serve confirming to standard of burning hazardous and toxic waste. <strong></strong></p>

There Reduction of alkali loss in an ash leaching system

TAPPI Journal ◽  
2017 ◽  
Vol 16 (7) ◽  
pp. 383-391
Author(s):  
CARLA CÉLIA ROSA MEDEIROS ◽  
FLÁVIA AZEVEDO SILVA ◽  
SAULO GODOY PIGNATON ◽  
ESTANISLAU VICTOR ZUTAUTAS ◽  
KLEVERSON FIGUEIREDO
Keyword(s):  
Solid Waste ◽  
Air Emissions ◽  
Recovery Cycle ◽  
Chloride Level ◽  
Control Loops ◽  
Kraft Mill ◽  
Recovery Boiler ◽  
Ash Leaching

There are many points in a kraft mill where the alkaline compounds are purged from the process. Several effluents, solid waste, and air emissions contain alkali, which leads to the necessity of chemical makeups to maintain the liquor balance. The main loss of alkali at the Veracel mill is present in the wastewater from the recovery boiler; more precisely, it is from the ash leaching system, which represents 80% of the total losses. To minimize the alkaline losses while keeping the chloride level in the recovery cycle under control, a project was developed at Veracel. Key actions were taken by adjusting the control loops of the ash leaching system, mainly on the slurry density and purge control. These adjustments led to a decrease in alkali losses and to an increase of treated ash, and kept the chloride level of the recovery boiler dust at 2.6%.

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