Situation of wastewater treatment of natural rubber latex processing in the Southeastern region, Vietnam

Nguyen, Hai Xuan; Luong, Thao Thanh

doi:10.13141/jve.vol2.no2.pp58-64

Cited by 42 publications

(9 citation statements)

References 8 publications

(4 reference statements)

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“…It is well known that Fenton reactions were pH sensitive and acidic condition was necessary for iron solubility. Therefore, the initial pH value has to be in the acidic range (2)(3)(4) to generate the maximum amount of HO• to oxidize organic compounds [13]. Significant reaction on Fenton process occurring at pH 3 was informed in many articles [15].…”

Section: Resultsmentioning

confidence: 99%

“…Rubber manufacturing industries consume large volume of water and chemicals for processing of rubber. Mostly, there are three main pollutants originating from the natural rubber latex production created in the wastewater effluents: latex, organic matter and nitrogen-containing substances [4]. Characteristics of process effluents from rubber processing industries were reported by [3], as can be shown in Table 1.…”

Section: Introductionmentioning

confidence: 99%

“…There are various techniques approached can be applied in handling of rubber wastewater in several industries, however, a number of boundaries still happen. In common, the technologies of wastewater treatment of natural rubber manufacturing in South East county are based on conservative biological processes, for example: lagoon system, oxidation ditch, anaerobic digestion and activated sludge [4]. The pond system costs least particularly due to the misplaced operation costs.…”

Section: Introductionmentioning

confidence: 99%

“…The highest problematic of wastewater treatment of rubber handling manufactories in South East region, including in Indonesia, is the inefficiency of the technologies applied [4]. For example, the biological based technologies including up-flow anaerobic sludge blanked (UASB), activated sludge, oxidation ditch etc.…”

Section: Introductionmentioning

confidence: 99%

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Treatment of Rubber Industry Wastewater by Using Fenton Reagent and Activated Carbon

2017

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Rubber industries are sufficiently developed and widely spread countryside as well as in some big cities in Indonesia. An Increasing number of rubber industries have also increased rubber wastewater. However, the rubber industry development should pay attention to the impact on the environment. The rubber wastewater is problematic, because of high Chemical Oxygen Demand (COD) content. So far, the methods that have been used to remove COD in the waste water have been proven to be costly and time consuming. The research objective is to treat the rubber wastewater by using a combination of Fenton reagent and activated carbon adsorption. In this study, effect of molar ratios of Fenton reagent, pH, and reaction time on COD degradation were studied. After treating with Fenton reagent, the wastewater was passed into an adsorption column of 20 cm height of activated carbon granules. The maximum COD degradation of 95% were found by using a combination of Fenton reagent and activated carbon, with a molar ratio of reagent Fenton 1:250 and a reaction time of 45 minutes. The final COD of 71 mg/l, TSS of 70 mg/l, and pH of 7.8 were found which fulfilled the environmental quality standard regulation for industrial wastewater in Indonesia.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Treatment of Rubber Industry Wastewater by Using Fenton Reagent and Activated Carbon

2017

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“…Despite the great profits of natural rubber latex production, it’s processing release a large amount of wastewater into the water bodies from several processing steps such as coagulation, centrifugation, lamination, washing and drying. Processing of one ton of dry rubber from raw latex generates 25 m 3 wastewater (Nguyen and Luong, 2012). Thus, northeast India alone is generating approximately 1.251 million m 3 wastewater from rubber processing industry.…”

Section: Introductionmentioning

confidence: 99%

Bacterial biofilm‐based nitrate and phosphate removal from rubber latex wastewater for sustainable water usage

Dey

Kumar

Sinha

et al. 2019

Water & Environment J

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Rubber latex wastewater contains high level of inorganic anions such as nitrate and phosphate which are more prevalent as groundwater contaminant. The applicability of biofilm forming bacterial isolates to treat rubber latex wastewater was investigated. Microscopic analyses (CLSM and SEM) evaluated that the major component of biofilm other than bacterial cell is EPS matrix. EPS was found to contain higher proportion of lipids and polysaccharide which are required for attachment and absorption of nutrients. ATR-FTIR and 1 H NMR revealed the functional groups present in EPS. Rhodococcus rhodochrous CTI-14 showed robust biofilm followed by Cellulosimicrobium sp. CTB-10. Out of six bacterial consortia tested, consortium-D efficiently removed 95% NO − 3-N and 75% PO 3− 4. Taguchi method revealed the optimum parameters to remove the nutrients. The consortium-D optimally reduced nitrate and phosphate at pH 7 at 37°C. Consortium-D composed of Cellulosimicrobium sp. CTB-10, Aeromonas veronii OS-01, Lysinibacillus sphaericus RTA-01 and Rhodococcus rhodochrous CTI-14 was found to be the most efficient bacterial consortium to treat rubber latex wastewater.

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Environmentally safe preservation and stabilization of natural rubber latex in an acidic environment

Urbina¹,

Osswald

Garcia

et al. 2023

SPE Polymers

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Natural rubber is an indispensable raw material that supplies about half of the world's rubber consumption. The latex that is extracted from the trees is composed of polyisoprene rubber, proteins, sugars, amino acids, lipids, and minerals. When the liquid latex emanates from the trees, it comes into contact with bacteria that cause it to decompose and coagulate. To hinder the decomposition and destabilization process, ammonia and other environmental and health hazard chemicals are added to the latex. The addition of these chemicals affects the health of plantation and rubber industry workers and results in residues that are contaminated with these chemicals, which require that processing facility effluents undergo costly treatment processes. Here, we present two novel liquid latex preservation and stabilization methods in an acid medium free of ammonia or other dangerous chemicals. The first method uses dodecyl benzene sulfonic acid to both stabilise and preserve the liquid latex, and the second uses ethoxylated tridecyl alcohol to stabilise and hydrofluoric acid to preserve the colloidal suspension. Both formulations result in rubber with superior mechanical properties, that is safe for the rubber plantation and industry workers, and with residues that no longer adversely affect the environment.

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Situation of wastewater treatment of natural rubber latex processing in the Southeastern region, Vietnam

Cited by 42 publications

References 8 publications

Treatment of Rubber Industry Wastewater by Using Fenton Reagent and Activated Carbon

Treatment of Rubber Industry Wastewater by Using Fenton Reagent and Activated Carbon

Bacterial biofilm‐based nitrate and phosphate removal from rubber latex wastewater for sustainable water usage

Environmentally safe preservation and stabilization of natural rubber latex in an acidic environment

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