The research investigated wastewater discharges from wet coffee processing plant (WCPP) combined with tap water (TW) treated by using Cyperus-ustulatus plant (P1), Typha-latifolia plant (P2) wetland. The WCPP wastewater was conducted by different combination (100%WW + 0% TW; 75% WW + 25% TW; 50% WW + 50% TW; 75%WW + 25% TW and 0% WW + 100% TW) after being irrigated for 21 days in the constructed wetland with P1, P2and control (without a plant). The highest value of total solids, chemical oxygen demand and biochemical oxygen demand increases were 76%, 95% and, 96%, respectively, removed wastewater treated by T3 (50% WW + 50% TW) with P2 wetland after 21 days irrigated. As a result, the combination of coffee wastewater with constructed wetland treatment methods was a low-cost, affordable, technically viable and eco-friendly treatment option for the wet coffee processing plant wastewater.
{"title":"Treatment of combined coffee processing wastewater using constructed wetland/ Cyperus-ustulatus and Typha-latifolia plants process","authors":"Samuel Z.A","doi":"10.30955/gnj.003688","DOIUrl":"https://doi.org/10.30955/gnj.003688","url":null,"abstract":"The research investigated wastewater discharges from wet coffee processing plant (WCPP) combined with tap water (TW) treated by using Cyperus-ustulatus plant (P1), Typha-latifolia plant (P2) wetland. The WCPP wastewater was conducted by different combination (100%WW + 0% TW; 75% WW + 25% TW; 50% WW + 50% TW; 75%WW + 25% TW and 0% WW + 100% TW) after being irrigated for 21 days in the constructed wetland with P1, P2and control (without a plant). The highest value of total solids, chemical oxygen demand and biochemical oxygen demand increases were 76%, 95% and, 96%, respectively, removed wastewater treated by T3 (50% WW + 50% TW) with P2 wetland after 21 days irrigated. As a result, the combination of coffee wastewater with constructed wetland treatment methods was a low-cost, affordable, technically viable and eco-friendly treatment option for the wet coffee processing plant wastewater. \u0000","PeriodicalId":446992,"journal":{"name":"Issue 3 (In progress)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122403192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Presence of sulfide in the environment represents huge concerns to biological life. The high costs and low safety of chemical and physical removal strategies lead to finding alternative strategies. Sulfur-oxidizing bacteria (SOB) are consider a promising alternative strategy, where they play a critical role in removal of such compounds from water and soil environments, as well as, they maintain the sulfur balance during natural sulfur cycle. The main objective of this study was to isolate sulfur oxidizing bacteria (SOB) from sulfide polluted water. In addition screening for sulfide oxidase producer bacteria was performed. Twenty isolates of sulfur oxidizing bacteria were isolated from eight different sulfide polluted water sources. During testing the isolates on thiosulfate broth medium, it was observed that, eleven isolates could efficiently reduce the pH of the media from 7.5±0.2 to 5.0 ± 0.5 as a resulting of the oxidizing of sulfides to sulfate ion. The concentration of produced sulfate ion ranged from 76 to 155 mg mL-1. The sulfur oxidase activity of the tested isolates ranged between 2.68 to 5.23 U mL-1. The bacterial isolates were identified as Bacillus spp., Pseudomonas spp. and Klebsiella spp. based on their morphological and biochemical characterization.
环境中硫化物的存在对生物生命构成了巨大的威胁。化学和物理去除策略的高成本和低安全性导致寻找替代策略。硫氧化细菌(SOB)被认为是一种很有前途的替代策略，它们在去除水和土壤环境中的此类化合物方面发挥着关键作用，并且在自然硫循环中维持硫平衡。本研究的主要目的是从硫化物污染水中分离硫氧化细菌(SOB)。此外，还对硫化氧化酶产生菌进行了筛选。从8个不同的硫化物污染水源中分离得到20株硫氧化菌。在硫代硫酸盐肉汤培养基中，11株菌株可以有效地将培养基的pH从7.5±0.2降低到5.0±0.5，这是由于硫化物氧化为硫酸盐离子造成的。生成的硫酸盐离子浓度为76 ~ 155 mg mL-1。硫氧化酶活性在2.68 ~ 5.23 U mL-1之间。根据形态和生化特征鉴定分离的细菌为芽孢杆菌、假单胞菌和克雷伯氏菌。
{"title":"Isolation of Sulfur Oxidizing Bacteria from Polluted Water and Screening for Their Efficiency of Sulfide Oxidase Production","authors":"","doi":"10.30955/gnj.002756","DOIUrl":"https://doi.org/10.30955/gnj.002756","url":null,"abstract":"Presence of sulfide in the environment represents huge concerns to biological life. The high costs and low safety of chemical and physical removal strategies lead to finding alternative strategies. Sulfur-oxidizing bacteria (SOB) are consider a promising alternative strategy, where they play a critical role in removal of such compounds from water and soil environments, as well as, they maintain the sulfur balance during natural sulfur cycle. The main objective of this study was to isolate sulfur oxidizing bacteria (SOB) from sulfide polluted water. In addition screening for sulfide oxidase producer bacteria was performed. Twenty isolates of sulfur oxidizing bacteria were isolated from eight different sulfide polluted water sources. During testing the isolates on thiosulfate broth medium, it was observed that, eleven isolates could efficiently reduce the pH of the media from 7.5±0.2 to 5.0 ± 0.5 as a resulting of the oxidizing of sulfides to sulfate ion. The concentration of produced sulfate ion ranged from 76 to 155 mg mL-1. The sulfur oxidase activity of the tested isolates ranged between 2.68 to 5.23 U mL-1. The bacterial isolates were identified as Bacillus spp., Pseudomonas spp. and Klebsiella spp. based on their morphological and biochemical characterization. \u0000","PeriodicalId":446992,"journal":{"name":"Issue 3 (In progress)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125115853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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